By Inspection Of Copied Image Patents (Class 399/15)
  • Patent number: 11899390
    Abstract: A recording-material-transporting apparatus includes: a transport unit that transports a recording material along a transport path; an image reading unit that is disposed on one side of the transport path and that reads an image formed on the recording material transported along the transport path; and a rotating member disposed opposite the image reading unit with the transport path provided therebetween. At least one portion of the rotating member contacts the image reading unit, or a rotating member support that supports the rotating member contacts the image reading unit.
    Type: Grant
    Filed: September 9, 2022
    Date of Patent: February 13, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Seiichi Takayama, Masakazu Shirai, Taketoshi Tanaka, Tadashi Sugizaki
  • Patent number: 11829094
    Abstract: An image forming apparatus includes an image forming unit including an image bearing member, and a transfer unit, a fixing unit, a re-conveyance unit, a detection unit, and a control unit configured to execute a booklet mode while creating a booklet, the booklet including a first sheet having a first surface and a second surface opposite to the first surface, and a second sheet having a third surface arranged adjacent to the second surface of the first sheet. The control unit is configured to control the image forming unit such that, in the booklet mode, a toner image is transferred to the second surface before a toner image is transferred to the first surface of the first sheet, and a toner image to be formed on the third surface of the second sheet is corrected based on an information of the second surface detected by the detection unit.
    Type: Grant
    Filed: August 8, 2022
    Date of Patent: November 28, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Koji Suzuki
  • Patent number: 11789394
    Abstract: A print system having an information processing apparatus and a printing apparatus configured to receive a print job from the information processing apparatus and execute printing. The information processing apparatus sets so as to insert a chart sheet on which patches for tone correction have been printed for the print job. In a case where the print job includes a setting to insert the chart sheet, the printing apparatus controls whether or not to insert the chart sheet based on a type of sheet to be used in the print job.
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: October 17, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Masahiro Mutsuno
  • Patent number: 11745497
    Abstract: It is intended to allow whether or not a noise included in a read image is a noise due to an ink ejection failure to be more reliably determined. An image reading device includes an image reading unit that reads an image formation surface of paper by using a reducing optical system and a control unit. The image reading unit includes a plurality of read sensors disposed at positions displaced from each other in a main scanning direction. The plurality of read sensors are disposed to be able to read the image formation surface by using at least a local region of the image formation surface as a common region to be read.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: September 5, 2023
    Assignee: KONICA MINOLTA, INC.
    Inventor: Yasuyuki Kamai
  • Patent number: 11681247
    Abstract: An image forming apparatus that includes an image bearing member which can bear a toner image, a transfer member used to transfer a toner image onto a recording material from the image bearing member, and a reading device which reads density information of images on recording material disposed on a platen. The image forming apparatus forms a first chart on a first recording material and a second chart on a second recording material by sequentially transferring a plurality of test images while applying a plurality of test voltages to the transfer member. The two charts are read by the reading device and the transfer voltage is adjusted based on the reading result.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: June 20, 2023
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masato Kobayashi, Wataru Kato
  • Patent number: 11493868
    Abstract: An image forming apparatus includes an image forming unit having a photosensitive member, an exposure unit, and a developing unit having a developing sleeve; and a controller configured to acquire read data relating to a first test image, a second test image, and a third test image formed on a same sheet by the image forming unit, and adjust a density in a main scanning direction of an image to be formed by the image forming unit based on the read data. A first interval between the first test image and the second test image is different from a second interval between the second test image and the third test image. Each of the first interval and the second interval is different from an integral multiple of a circumferential length of the photosensitive member, and is different from an integral multiple of a circumferential length of the developing sleeve.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: November 8, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventor: Taichi Takemura
  • Patent number: 11474462
    Abstract: An image forming device includes an image forming unit, a fuser, a memory, and a control circuit. The image forming unit forms an image on a recording medium with a decolorable toner based on image data. The decolorable toner decolorizes at a first temperature and does not decolorize at a second temperature that is lower than the first temperature. The fuser has a plurality of regions extending in a direction orthogonal to a direction of conveyance of the recording medium. The fuser generates heat in each of the plurality of regions to fuse the image onto the recording medium. The memory stores a correspondence between the plurality of regions and positions of a plurality of areas positioned along a main scanning direction in the image data. The control circuit changes the correspondence based on a degree of color development or decolorization of the image.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: October 18, 2022
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Norio Kurosawa
  • Patent number: 11250558
    Abstract: An inspection image is assumed to contain many abnormalities when a reference image and an inspection image are misaligned. It has been impossible to determine whether the abnormalities are attributed to the inspection image. An image inspecting apparatus includes: a print alignment portion that aligns a print position of a reference image with a print position of an inspection image; an abnormality detector that detects an abnormality in the inspection image based on a difference between the reference image and the inspection image after print positions are aligned; and a print alignment result evaluator that evaluates a print position alignment result from aligning a print position of the reference image with a print position of the inspection image including an abnormality detected based on dispersion of the difference included in an evaluation region around an edge calculated from a printout image included in the reference image.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: February 15, 2022
    Assignee: KONICA MINOLTA, INC.
    Inventor: Makoto Oki
  • Patent number: 11169478
    Abstract: An image forming apparatus may include: a sheet storage that may store a sheet; a first sheet sensor that may determine a sheet size of the sheet stored in the sheet storage; a feeder that may feed the sheet from the sheet storage to a transport path based on the sheet size determined by the first sheet sensor; an image former that may form an image on the sheet fed to the transport path; a second sheet sensor that may (i) be provided downstream of the image former on the transport path, (ii) read the sheet in the transport path, and (iii) adjust the sheet size of the sheet; and a hardware processor that may perform adjustment of image formation on the sheet based on the sheet size adjusted by the second sheet sensor.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: November 9, 2021
    Assignee: Konica Minolta, Inc.
    Inventor: Keisuke Morita
  • Patent number: 11163507
    Abstract: Provided is an image forming system capable of reliably preventing others from removing and taking printed matter even though printing is executed beforehand. The confidential notation reading unit reads a confidential notation. The user storage tray has a structure from which outputted printed matter cannot be removed unless the opening/closing door is opened. The locking mechanism locks the opening/closing door. The sorting mechanism sorts the printed matter outputted from the image forming apparatus and outputs the printed matter to either the open tray or the user storage tray. The sorting control unit outputs printed matter to which a confidential notation is not added to the open tray, and outputs a printed matter to which a confidential notation is added to the user storage tray, respectively.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: November 2, 2021
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Teppei Shibuya
  • Patent number: 11131954
    Abstract: An image forming apparatus includes an image forming unit configured to form an image on a sheet; a reading unit configured to read the image formed on the sheet by the image forming unit during a period in which the sheet is being conveyed by a conveying unit; a control unit configured to control a conveyance speed of the sheet by the conveying unit; and a determination unit configured to determine whether or not there is an image defect in the image formed on the sheet by the image forming unit based on image data of a first partial image read by the reading unit, excluding a second partial image passing through the reading unit during a speed variation period in which the control unit varies the conveyance speed of the sheet.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: September 28, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shingo Harada, Hiroshi Hagiwara
  • Patent number: 11107210
    Abstract: In an image data generating apparatus, an image processor acquires target output image data converted from target input image data by a pre-trained model. The target input image data represents a captured image of a target product. The target output image data represents an image of a target product free from defects. The pre-trained model performs data compression and data decompression on inputted image data. The image processor generates first data by performing a first generation process on the target input image data. The first generation process includes a luminosity adjustment process adjusting luminosity in image data. The image processor generates second data by performing a second generation process including the luminosity adjustment process on the target output image data. The image processor generates inspection image data by using a difference between the first data and the second data for inspecting an external appearance of the target product.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: August 31, 2021
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Koichi Sakurai
  • Patent number: 11099497
    Abstract: An image forming apparatus includes a conveyance unit, an irradiation unit, an image capturing unit configured to capture a plurality of times the light radiated by the irradiation unit and reflected on the recording material as surface images, an image formation unit, and a control unit, wherein the conveyance unit accelerates or decelerates a conveyance speed of the recording material in at least a part of an image capturing period during which the image capturing unit captures the surface images the plurality of times, and wherein the control unit obtains a feature quantity from a plurality of surface images captured by the image capturing unit and controls the image forming condition based on the obtained feature quantity and a threshold value set according to the conveyance speed of the recording material in the image capturing period.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: August 24, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomohiro Hashimoto, Tsutomu Ishida, Masafumi Monde
  • Patent number: 11022924
    Abstract: An image forming apparatus includes: a control unit configured to acquire base information by making a reading unit read a surface of the recording material with all image forming units set in a non-forming state, acquire first determination information by making the reading unit read a non-image region of the recording material with only a first image forming unit set in a forming state, and acquire second determination information by making the reading unit read the non-image region with all image forming units set in the forming state or with only all second image forming units set in the forming state. The control unit is further configured to determine a color of a toner adhered to the non-image region based on the base information, the first determination information, and the second determination information.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: June 1, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kuniaki Kasuga
  • Patent number: 11017277
    Abstract: An object is to reduce a difference between a target line width and a width of a line that is printed by a printing apparatus by correcting the line width in accordance with color information indicating a color of the line in a case where an image is printed by the printing apparatus based on image data including the line based on print data. The present disclosure is an image processing apparatus having an acquisition unit configured to acquire a drawing command in which a color and a line width of a line are specified, a determination unit configured to determine a correction amount for correcting the line width specified in the drawing command based on the color of the line specified in the drawing command, and a correction unit configured to correct the line width specified in the drawing command in accordance with the correction amount.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: May 25, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuhiro Yamagata, Okinori Tsuchiya, Yugo Mochizuki, Kouta Murasawa, Kazuya Ogasawara, Toshiki Miyazaki, Masao Kato
  • Patent number: 10906296
    Abstract: A method compensates for position-dependent density fluctuations of print nozzles in an inkjet printing machine by use of a computer. The computer produces compensation profiles for the position-dependent density fluctuations over all the print heads for all print substrates used, calculates an mean profile from these, and applies the mean profile to compensate for the position-dependent density fluctuations in the inkjet printing machine. When one or more print heads of the inkjet printing machine are replaced, the computer calculates a new compensation profile for only one print substrate. The computer derives a new mean profile from this, and the computer calculates and applies the new mean profile using the old compensation profiles for the remaining print substrates.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: February 2, 2021
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Sepideh Samadzadegan, Hans Koehler, Nikolaus Pfeiffer, Annika Kamper
  • Patent number: 10895831
    Abstract: A conveyance control device includes a fixing device including a first rotary body, a cooling device including a second rotary body, and control circuitry. The circuitry records a first drive amount for the second body when the first and second bodies are driven at a speed, a second drive amount for the second body when the second body is driven without the first body being driven, a third drive amount for the second body when the second body is driven to rotate faster than a rotating speed and the first body is driven, and a fourth drive amount for the second body when the second body is driven to rotate slower than the rotating speed and the first body is driven. The circuitry performs correction based on the drive amounts in such a manner that a drive amount of the second body becomes equivalent to the second drive amount.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: January 19, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Kimiharu Yamazaki, Hideyo Makino, Susumu Mikajiri, Yoshinari Onuma, Satoshi Nakayama, Hiroki Yamamura, Kohta Aoyagi
  • Patent number: 10877709
    Abstract: An image processing apparatus includes a processor that generates color chart image data representing a color chart containing a plurality of patches and causes a printing apparatus to print the color chart based on the generated color chart image data, and the processor generates the color chart image data representing the color chart in which the amounts of recording agents having colors that belong to a first color group are fixed among the patches and the amount of a recording agent having a specific color that does not belong to the first color group varies among the patches.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: December 29, 2020
    Assignee: Seiko Epson Corporation
    Inventor: Ryotaro Hayashi
  • Patent number: 10792939
    Abstract: A printer including a printing part which prints on a recording paper; a cutter part which cuts the recording paper; and a conveying part which includes a conveying route having a curving shape and through which the recording paper conveyed through the cutter part is conveyed; a conveying route cover which is attached to the conveying part and covers a portion of the conveying route; and a flapper which is provided at a curved portion of the conveying route, has a curved shape, and is rotatably attached to the conveying route cover so as to rotatably open or close relative to a main body of the printer, wherein the conveying route cover and the flapper are movable together so as to separate from or contact the main body.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: October 6, 2020
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Tatsuya Oguchi, Sumio Watanabe, Masahiro Tsuchiya, Tetsuhiro Ishikawa
  • Patent number: 10795299
    Abstract: An image forming apparatus forms an image on a sheet and conveys the sheet through a conveying path. The image forming apparatus includes a color detection sensor which detects a detection image formed on the sheet for generating an image forming condition and a white reference plate used to calibrate the color detection sensor. The white reference plate is arranged opposite to the color detection sensor with the conveying path interposed therebetween at a position where the white reference plate is not concealed by the sheet when viewed from the color detection sensor when the sheet is conveyed to the conveying path. The detection image is formed on a white reference plate side of the sheet. The color detection sensor reads the white reference plate and is calibrated according to a read result.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: October 6, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tomohisa Itagaki
  • Patent number: 10782641
    Abstract: An image forming apparatus includes an image forming device, an image position detector, and an image density detector. The image forming device forms an image on a surface of a recording medium. The image position detector detects a position of the image. The image density detector detects a density of the image. The image forming device forms a position detection image on a surface of a first recording medium. The image position detector detects a position of the position detection image on the surface of the first recording medium. The image forming device forms a density detection image on a second recording medium. The image density detector detects a density of the density detection image on the surface of the second recording medium.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: September 22, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventor: Daiki Sekita
  • Patent number: 10730293
    Abstract: A system is disclosed. The system includes at least one physical memory device to store medium classification logic and one or more processors coupled with the at least one physical memory device to execute the medium classification logic to receive optical density (OD) measurement data corresponding to application of a halftone pattern using ink on a print medium in a printing system, receive ink deposition measurement data corresponding to application of the halftone pattern using the ink in a printing system, determine a set of distribution function parameters based on the OD measurement data and the ink deposition measurement data, apply the set of distribution function parameters to machine learning logic trained to classify the print medium and classify the print medium as a first of a plurality of print medium categories based on the machine learning logic.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: August 4, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Juan Lin, Nikita Gurudath, Mikel John Stanich
  • Patent number: 10728399
    Abstract: The spectral colorimetry apparatus includes an LED, a diffraction grating; a line sensor that has multiple pixels and that receives light dispersed by the diffraction grating at the multiple pixels for respective wavelengths of the dispersed light and outputs voltages according to the intensity of the received light; and a sensor CPU that calculates spectral reflectivity of an object based on the intensity of light reflected from the object. The sensor CPU varies, with the multiple pixels, the number of detection times of detecting the light reflected from the object at each pixel.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: July 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hitoshi Furukawa
  • Patent number: 10671005
    Abstract: A detecting apparatus includes: a light emitting element which emits light toward a detection material; a light receiving element which receives reflected light from the detection material; and an apparatus main body having an opening/closing member which opens and closes an opening through which light emitted from the light emitting element and reflected light from the detection material pass through, the apparatus main body being capable of moving between a first position where the apparatus main body comes into contact with the detection material and a second position where the apparatus main body separates from the detection material, and the opening/closing member being configured to open when the apparatus main body moves to the first position and to close when the apparatus main body moves to the second position.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: June 2, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyuki Iwakoshi, Satoshi Tsuda
  • Patent number: 10638017
    Abstract: An image forming apparatus includes a print mechanism, an obtaining unit that obtains measurement information of gradation characteristics of the print mechanism for a specific color material, and a generating unit that generates correction information for a print density of the specific color material in accordance with the measurement information. The correction information specifies that a corrected density with respect to an input density increases monotonically in a range of densities from a correction start density to a maximum density, and the correction start density is determined in accordance with a density where gradation starts to attenuate in the measurement information.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: April 28, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Shinya Takaishi
  • Patent number: 10627740
    Abstract: An image processing apparatus includes an image forming unit of an electrophotographic method, a detection processing unit, and a determination processing unit. The detection processing unit detects a streaky image along a sub-scanning direction from a first image and a second image among images indicated by image data. The first image has a print density equal to or more than a predetermined reference print-density value, and the second image has a print density less than the reference print-density value. The determination processing unit determines a cause of abnormality in the image forming unit based on a detection result of the streaky image by the detection processing unit for each of the first image and the second image.
    Type: Grant
    Filed: May 20, 2019
    Date of Patent: April 21, 2020
    Assignee: Kyocera Document Solutions Inc.
    Inventor: Ayumi Nakano
  • Patent number: 10620578
    Abstract: An image forming apparatus includes an image forming device to form an image on an image bearer and circuitry configured to accept, from a user, an input of a density level selected from a plurality of different density levels and control an image forming condition under which the image forming device forms the image. The circuitry is configured to correct density unevenness of the image formed on the image bearer by the image forming device and correct the density unevenness of the image at the density level accepted. The density unevenness is unevenness appearing in a main scanning direction orthogonal to a direction of conveyance of the image bearer during image formation.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: April 14, 2020
    Assignee: Ricoh Compnay, Ltd.
    Inventors: Kohhei Sakurada, Katsuya Akiba, Yasuhito Shinchi, Shinichi Akatsu, Tetsuya Muto, Hiroki Yamamura
  • Patent number: 10616447
    Abstract: A color management system acquires first color data for a color patch of a test pattern printed by a first image forming device on a recto side of a sheet, acquires second color data for the color patch in the test pattern printed by the first image forming device; and acquires third color data for a corresponding color patch in the test pattern printed by a second image forming device on a recto side of a sheet which has passed through the first image forming device. The system applies a correction to the third color data, which is a function of a difference between the first color data and the second color data and which may also be a function of a difference between the second color data and the third color data.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: April 7, 2020
    Assignee: XEROX CORPORATION
    Inventors: Stuart A. Schweid, Michael B. Monahan
  • Patent number: 10571842
    Abstract: An image forming system includes: a density detecting section that detects the density of a toner image formed on an image bearing member by an image forming section, the density being detected as an output image density; a hardware processor which performs; tone correction in accordance with input-output characteristics data indicating the relationship between an input image density and an output image density, the input image density being the image density of a tone component included in the input image data, the output image density being detected by the density detecting section in accordance with the tone component; determining whether there is a missing tone component in the input image data; and complementing the input-output characteristics data corresponding to a missing tone component, when it is determined that there is the missing tone component.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: February 25, 2020
    Assignee: KONICA MINOLTA, INC.
    Inventors: Katsuya Toyofuku, Daiki Yamanaka, Toru Yamaguchi
  • Patent number: 10514646
    Abstract: An image forming apparatus includes a latent image bearer, a latent image writing device, a developing device, a conveyance unit to convey a recording medium, a transfer device, a length data acquisition unit to obtain a length of the recording medium in a conveyance direction of the recording medium, an image forming processor to form a test pattern, and a light quantity correction calculator that acquires image density data of the test pattern and calculates a light quantity correction value to correct a light quantity. The image forming processor sets a position of the test pattern on the recording medium in the conveyance direction of the recording medium and a length of the test pattern in the conveyance direction of the recording medium based on the length of the recording medium in the conveyance direction of the recording medium obtained by the length data acquisition unit.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: December 24, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Susumu Narita, Yoshinobu Sakaue, Ryo Sato, Koichi Murota, Masashi Suzuki, Takuma Nishio, Hiroaki Nishina
  • Patent number: 10498929
    Abstract: In a case where a first mode, in which a reader reads test patterns while sheets are fed to the reader by a document feeder, is executed, an image forming apparatus forms a first test pattern on a first sheet and a second test pattern on a second sheet before the first test pattern on the first sheet placed on an original tray of the document feeder is read by the reader. In a case where a second mode, in which the reader reads the test patterns on the sheets without feeding the sheets by the document feeder is executed, the apparatus forms the second test pattern after a reading of the first test pattern on the first sheet is started by the reader.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: December 3, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Tomii
  • Patent number: 10474083
    Abstract: An image forming apparatus includes a causal member identifying section, and a judgement section. The causal member identifying section identifies the causal member as a cause of the periodic unevenness based on the period of the periodic unevenness which has been detected by the periodic unevenness detector. The judgement section judges whether or not the periodic unevenness is transient based on the information of the causal member identified by the causal member identifying section, the information of at least one of a resting time in which the image forming apparatus has been left inoperative, an operating time of the causal member, and the image forming condition for image formation, and the information of a temperature and a humidity inside the image forming apparatus.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 12, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Daisuke Murakami
  • Patent number: 10477035
    Abstract: An image reading apparatus includes: a conveyor that conveys paper on which an image is formed along a conveyance path; a first guide member including a first opening on a reference surface opposed to the conveyance path that guides the conveyed paper; a first opposing member that arranges the image on the paper in a colorimetric range set in the first opening on the reference surface by pressing the reference surface via the paper to allow the paper to abut the reference surface; a second opposing member that presses the reference surface by a pressing surface including a calibrating member in a reference color to arrange the calibrating member in the colorimetric range; and a colorimeter arranged on a side opposite to the conveyance path across the first guide member that performs colorimetry on the image on the paper and the calibrating member arranged in the colorimetric range.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: November 12, 2019
    Assignee: Konica Minolta, Inc.
    Inventor: Kenji Kawatsu
  • Patent number: 10416601
    Abstract: A method of adjusting an imaging apparatus comprises printing a set of test patches, the set of test patches comprising a solid color patch, a grey level patch and a substrate patch. The optical densities of the set of test patches are determined. The method comprises simultaneously correcting a solid optical density value (Solid OD), relating to the solid color patch and an associated grey level (LUT) value relating to the grey level patch.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: September 17, 2019
    Assignee: HP Indigo B.V.
    Inventors: Nir Guttman, Gregory Braverman, Ran Waidman
  • Patent number: 10416590
    Abstract: An image forming apparatus includes a conveyance unit, an irradiation unit, an image capturing unit configured to capture a plurality of times the light radiated by the irradiation unit and reflected on the recording material as surface images, an image formation unit, and a control unit, wherein the conveyance unit accelerates or decelerates a conveyance speed of the recording material in at least a part of an image capturing period during which the image capturing unit captures the surface images the plurality of times, and wherein the control unit obtains a feature quantity from a plurality of surface images captured by the image capturing unit and controls the image forming condition based on the obtained feature quantity and a threshold value set according to the conveyance speed of the recording material in the image capturing period.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: September 17, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomohiro Hashimoto, Tsutomu Ishida, Masafumi Monde
  • Patent number: 10391785
    Abstract: A method for detecting and compensating for defective printing nozzles in an inkjet printing machine by using a computer, includes shrinking the height of a digitally available image to the image height of a print control strip by using the computer while the image width remains uninfluenced, printing the shrunk digital image onto a printing substrate, recording the printed shrunk digital image by using at least one image sensor, comparing the recorded image with the shrunk digital image by using the computer, detecting defective printing nozzles for the digital image by using the computer based on the comparison and compensating for the detected defective printing nozzles. The digital image is printed onto the following printing substrate by using defective printing nozzle compensation.
    Type: Grant
    Filed: November 15, 2018
    Date of Patent: August 27, 2019
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Ilias Trachanas, Axel Hauck
  • Patent number: 10386767
    Abstract: An image forming apparatus forms a first image by adjusting a photosensitive member potential to a first charging potential and adjusting a developing potential to a first developing potential, and forms a second image by adjusting the member potential to a second charging potential and adjusting the developing potential to a second developing potential, but not causing an exposure unit to expose a photosensitive member, and forms a third image by adjusting the developing potential to a third developing potential, but not causing a charging unit to charge the member and not causing the exposure unit to expose the member. The apparatus detects a streak image based on read data of the first, second and third images, and read data corresponding to a non-image region of the test sheet.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: August 20, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroshi Tomii
  • Patent number: 10379455
    Abstract: An image forming apparatus includes: a photoconductor; an optical writer to write a latent image on the photoconductor; an image data generator to generate image data of at least one of text and image and of a correction pattern; a light emission controller to control a light source of the optical writer; a developing device to develop the latent image into a toner image; a transfer device to transfer the toner image onto a recording medium; a fixing device to fix the toner image thereon; a detector to detect the toner image of the correction pattern formed according to the image data; and a writing position controller to control when the light source emits light based on the toner image detected. The correction pattern is formed at each of four corners inside a margin of the recording medium, and includes two edges in each of main scanning and sub-scanning directions.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: August 13, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Katsuhiko Maeda
  • Patent number: 10379482
    Abstract: An image forming method for an image forming system that includes an image former that performs both side printing for one sheet and a sheet feeding apparatus and a tray (sheet feeder) that stores a sheet to be fed to the image former, includes detecting a state change of the sheet feeder; and executing adjustment for a formation position of an image to be subjected to both side printing in a case where a state change of the sheet feeder has been detected.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: August 13, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Hiroki Hidaka
  • Patent number: 10338511
    Abstract: A reading apparatus includes: a reader that reads an image formed on a sheet; an opposed reading member provided opposite to the reader; a first feeding path that feeds a sheet on an upstream of the reader in a sheet feeding direction; a second feeding path that is continuous to the first feeding path and feeds a sheet between the reader and the opposed reading member; a pair of feeding rollers that feeds a sheet on the first feeding path to the second feeding path; a guide member that guides a sheet fed from the first feeding path to the second feeding path; and a roller that is arranged on the second feeding path and is rotatably driven, wherein the first feeding path and the second feeding path form a feeding path bent, a downstream end of the guide member is positioned in a first region.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: July 2, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventor: Kenji Kawatsu
  • Patent number: 10324397
    Abstract: An image forming apparatus includes a photoconductor drum, a latent-image forming device, a developing device, a density detecting device, and a processing device. The density detecting device is configured to detect densities at a plurality of positions in a main-scanning direction on a developed image. The processing device is configured to acquire at least two light-amount correction tables respectively associated with at least two positions of the plurality of positions in the main-scanning direction on the developed image, the light-amount correction tables being for reducing density variations in a sub-scanning direction at the at least two positions, and correct, for each scan, a set point for setting an amount of light of a light source based on a difference in corresponding correction data between two light-amount correction tables respectively associated with two adjacent positions of the at least two light-amount correction tables.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: June 18, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Muneaki Iwata, Masaaki Ishida, Atsufumi Omori, Hayato Fujita, Takefumi Takizawa
  • Patent number: 10139765
    Abstract: An image forming apparatus includes: an image former that forms an image on a transfer paper sheet; a colorimeter that reads the image; a conveyor that conveys the transfer paper sheet in the image formation and the reading of the image; and a controller that controls the formation of the image, and the reading and the conveyance of the image, wherein when a first conveyance velocity is a velocity at which the transfer paper sheet is conveyed when the image is formed by the image former, a second conveyance velocity is a velocity that is lower than the first conveyance velocity, and a long paper sheet having a longer transfer sheet length than a predetermined threshold value is used as the transfer paper sheet in an adjustment mode, the controller controls the image former and the conveyor, and controls the colorimeter and the conveyor.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: November 27, 2018
    Assignee: Konica Minolta, Inc.
    Inventor: Mitsunori Nakamura
  • Patent number: 9983544
    Abstract: An image reading apparatus includes: a light emission section including a light emitting element, and a light guiding member configured to irradiate a sheet with light emitted from the light emitting element; a reading section configured to read an image formed on the sheet; a heat dissipation section configured to dissipate heat of the light emitting element; and a cooling section configured to cool the heat dissipation section, in which the light emitting element and the heat dissipation section are disposed at positions outside a sheet passing region of the sheet in the width direction.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: May 29, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Akio Kasuga, Akihiko Ooishi
  • Patent number: 9948805
    Abstract: An image reading device having a mark formed on front and back of a sheet by an image forming device, and including a first scanner which reads the mark and a second scanner provided at a downstream side of the first scanner and which reads the mark, includes: a position adjusting unit configured to adjust front and back positions of the mark on the basis of a print position of the mark read by at least one of the first scanner and the second scanner; and a monitoring unit configured to monitor front and back misregistration of the mark on the basis of the front and back positions of the mark adjusted by the position adjusting unit.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: April 17, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventor: Tatsuya Katagiri
  • Patent number: 9811040
    Abstract: An image forming system includes an image forming apparatus which forms an image on a sheet; and a sheet processing apparatus which includes a processing device which performs predetermined processing on a sheet conveyed from the image forming apparatus. The processing device is able to perform the predetermined processing within a certain amount of time after preparation operation to enable the predetermined processing is completed. The sheet processing apparatus includes a processor which controls timing to start the preparation operation so that the preparation operation is completed when a first sheet which is to be a target of the predetermined processing reaches the processing device.
    Type: Grant
    Filed: September 20, 2016
    Date of Patent: November 7, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Ryosuke Muto
  • Patent number: 9727006
    Abstract: An image formation unit that forms an image on a transfer medium, a conveyance unit that conveys the transfer medium, a control unit that controls formation of the image and conveyance of the transfer medium are provided. The control unit has a sheet gap image forming function of forming a predetermined toner image in a sheet gap between the transfer media conveyed by the conveyance unit. When the transfer medium is conveyed, the control unit acquires information of a tilt angle on a conveyance surface of the transfer medium conveyed to the image formation unit, calculates a sheet gap between the transfer media based on the tilt angle, determines whether or not a toner image of a required amount is able to be formed in the sheet gap when performing the sheet gap image forming function, and controls formation of the sheet gap image based on the determination result.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: August 8, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Mikimasa Honma
  • Patent number: 9681012
    Abstract: A color measurement device acquires an image of a relative position calibration chart. The relative position calibration chart includes a calibration figure having a given calibration feature that has a position that is detectable along at least one of a first and a second direction. A color measurement of the relative position calibration chart is performed. Relative position relationship-related information is derived based on the calibration feature in the image of the relative position calibration chart and the calibration feature in the color measurement of the relative position calibration chart. A color of each patch of a number of patches of a color chart is measured at a position corresponding to one of the patches while correcting the position of the patch based on the position relationship-related information.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: June 13, 2017
    Assignee: Konica Minolta, Inc.
    Inventors: Yasushi Goto, Yoshiroh Nagai
  • Patent number: 9377729
    Abstract: An image forming apparatus includes a transport unit that transports a recording medium, a forming unit that forms a toner image including a test pattern, a fixing unit that heats the toner image formed on the recording medium by the forming unit and fixes the toner image on the recording medium, and a controller that controls an amount of heat to be applied to the toner image by the fixing unit, on the basis of a difference between an amount of toner of the test pattern formed by the forming unit and a predetermined reference amount of toner.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: June 28, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Satoshi Nakamura, Yoshihiro Hayashi
  • Patent number: 9213293
    Abstract: An image forming apparatus includes an image forming unit configured to form a measurement image on a sheet, a measurement unit configured to irradiate the measurement image with light and measure light reflected from the measurement image, a white reference plate arranged to be movable to a first position opposed to the measurement unit and a second position separated farther from the measurement unit than the first position, a shielding unit arranged to be movable to a third position that blocks the light with which the measurement unit irradiates the white reference plate and a fourth position that does not block the light, and a control unit configured to control positions of the reference plate and the shielding unit. When the measurement unit measures the white reference plate, the control unit moves the shielding unit to the fourth position and the white reference plate to the first position.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: December 15, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirotoshi Tajima, Kenichi Hirota
  • Patent number: 9207610
    Abstract: Provided is a control device including a reception unit that receives an instruction of an image quality adjustment from a user, a changing unit that changes, when the instruction is received by the reception unit, an image forming condition in an image forming section from a first condition to a second condition, and an output unit that outputs first information indicating the first condition and second information indicating the second condition in association.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: December 8, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Naoya Yamasaki, Shinichi Tsunoda