Including Detector Of Record-medium Patents (Class 400/708)
  • Patent number: 10052862
    Abstract: Intaglio printing press systems for recto-verso intaglio printing of sheets, in particular for the production of banknotes and the like securities, wherein first and second intaglio printing presses are operatively-coupled to one another by a sheet processing and transporting system comprising an automated guided vehicle system for automatically transporting sheets from a sheet delivery station of the first intaglio printing press where recto printing is performed to a sheet feeding station of the second intaglio printing press where verso printing is performed.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: August 21, 2018
    Assignee: KBA-NOTASYS SA
    Inventor: Johannes Georg Schaede
  • Patent number: 9713929
    Abstract: Detecting a continuous level of paper in a paper supply providing paper for a printing device. A length of the paper supply includes applied indicia, with the indicia extending contiguously across the length of the paper supply. When a paper section is dispensed, the position of the indicia on the dispensed portion of paper is determined, with the position reflecting a level pertaining to the paper supply remaining or dispensed.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: July 25, 2017
    Assignee: International Business Machines Corporation
    Inventors: Chiang Qiya, Dhanalakshmi Kalyana Sundaram, Seng Kiat Koh, Christ Lestario, Francisco Deligero Liwa
  • Patent number: 9409418
    Abstract: A reverse surface of a print tape includes a reference portion and a reference portion. The reference portion is configured to identify a position of a print area. The non-reference portion includes a plurality of through holes. The reference portion includes a barcode that includes a first mark and a second mark. The non-reference portion includes at least one first area and a second area. The at least one first area and the second area are provided to obtain a color arrangement in which the non-reference portion does not include the barcode in the lengthwise direction, where it is assumed that each of the plurality of through holes is a portion indicating both a first color and a second color.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: August 9, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Satoru Moriyama
  • Patent number: 9242831
    Abstract: A printer includes an arm part connected to a printer body part and a paper roll support shaft part having a first end connected to the arm part and a second end to be inserted into a hollow core of a paper roll. The paper roll support shaft includes a first support shaft and a second support shaft. The paper roll support shaft is configured to come into contact with the interior of the core at a first contact point on the first support shaft and a second contact point on the second support shaft.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: January 26, 2016
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Tetsuhiro Ishikawa, Sumio Watanabe, Masahiro Tsuchiya
  • Patent number: 9233567
    Abstract: A printer includes a lid part, a body part, a control part provided in the body part, a mark detecting part provided on the lid part and configured to output a mark detection signal in response to detecting a mark added to paper, a transmission part configured to transmit the mark detection signal from the mark detecting part to the control part and having a slack part configured to extend and contract, and a housing part configured to house the slack part of the transmission part and to extend and contract in directions in which the slack part is configured to extend and contract. The slack part is housed in the housing part, and a length of the slack part is greater than or equal to a length of the housing part.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: January 12, 2016
    Assignee: FUJITSU COMPONENT LIMITED
    Inventors: Yuji Yada, Yoshinori Sata, Yukihiro Mori
  • Patent number: 9092716
    Abstract: A printing apparatus includes: a printing head for making printing on a medium; a platen disposed as to face the printing head in a way selectable between being close and being remote from the printing head; a medium conveying unit changeable of a contacting state to the medium for conveying the medium in contact with the medium along a medium conveyance route; a shutter opening and closing the medium conveyance route; a mode selecting unit having plural selectable modes in combination of a choice between being close to and being remote from the platen, the contacting state of the medium conveying unit to the medium, and a choice between closing and opening of the medium conveyance route by means of the shutter; and a controller controlling the mode selecting unit for selecting a prescribed mode from the plural selectable modes.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: July 28, 2015
    Assignee: Oki Data Corporation
    Inventors: Daichi Sato, Seiichi Satake
  • Patent number: 9024988
    Abstract: An apparatus and method for automatically calibrating a media sensor configured to detect advancing print media in a printing device. In some embodiments, the apparatus selects a first light intensity level and a second light intensity level greater than the first light intensity level. A light source unit, such as a light emitting diode or laser diode is activated to emit light at the second light intensity level. The light passes though print media, for example, a roll of self-adhesive labels, that is advanced along a print path of the printing device. The amount of light transmitted through the print media is measured as the print media advances. If the measured light increases, the light source unit is reactivated to emit light at the first light intensity level. In some embodiments, the apparatus identifies whether print media has changed or an out-of-stock condition exists.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: May 5, 2015
    Assignee: Datamax-O'Neil Corporation
    Inventors: Jose Fernando Sanchez Gutierrez, Ronald Schwallie
  • Patent number: 8909371
    Abstract: A pointer is guided by a user of a processing machine in succession to a number of locations of a working space of the processing machine. The pointer has first location determining devices which are arranged at predetermined pointer locations relative to a pointer coordinate system in fixed relationship to the pointer. Through interaction of the first location determining devices with second location determining devices arranged at predetermined locations relative to a machine coordinate system in fixed relationship to the processing machine, data describing a geometric relationship of the location determining devices relative to one another are acquired. These data are transmitted to a control device which determines the position of the pointer in the working space based on the characteristic data and based on the data subdivides the working space into a permitted movement range for a component of the processing machine and a complementary prohibited movement range.
    Type: Grant
    Filed: November 15, 2012
    Date of Patent: December 9, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Carsten Hamm
  • Patent number: 8670682
    Abstract: An image forming apparatus realizes two functions using a single actuator to sense the width and presence of a printing medium and a single sensor to sense operation of the actuator, resulting in reduced manufacturing costs.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: March 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Min Chul Lee
  • Patent number: 8388247
    Abstract: An image forming device having a detection assembly that detects a detection target. The detection assembly includes an actuator having a shaft rotatable about its axis, an abutment portion extending from the shaft and pivotally movable upon abutment of the detection target, and a detected portion pivotally movable about the axis. A detection board is supported to a stationary base component and includes a detection unit for detecting the detected portion. The shaft has one end portion supported to the base component, and another end portion supported to the detection board. Relative positional relationship between the actuator and the detection unit is maintained by the direct supporting manner of the shaft by the detection board.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: March 5, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Hiroshi Ichikawa
  • Patent number: 8145117
    Abstract: An image forming apparatus is provided. The image forming apparatus includes a fixing unit that is configured to fix a developing material on a sheet; a plurality of a pair of rollers that discharge the sheet conveyed from the fixing unit; and a sheet detection unit that detects the sheet conveyed from the fixing unit, the sheet detection unit comprising an actuator for detecting the sheet conveyed from the fixing unit, wherein the actuator of the sheet detection unit is disposed between the fixing unit and the plurality of the pair of the rollers on a conveyance path and is disposed within a width of one of the rollers when viewed from a sheet conveyance direction.
    Type: Grant
    Filed: December 16, 2008
    Date of Patent: March 27, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Takuji Matsuno
  • Patent number: 8113610
    Abstract: An output voltage of a paper-width detector is input while a carriage is moved leftward in a main scan direction. Whether a mounting position of a test element member in the main scan direction falls within a generally horizontal design basis range is determined based on the position of the carriage and reference information. The position of the carriage in the main scan direction is determined from a signal of a linear encoder when a right edge of the test element member is detected in response to a substantial change in the output voltage of the paper-width detector. Whether a mounting position of the test element member in a substantially vertical direction falls within a vertical design basis range is determined based on the mounting position of the test element member in the substantially vertical direction determined from the output voltage of the paper-width detector and the reference information.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: February 14, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Katsuhiko Nishizaka
  • Patent number: 8016504
    Abstract: A printer having a platen roller and a module that are engagable with each other for printing on paper is disclosed. The printer includes a status detecting mechanism including a detecting part having a detection function for detecting a status of the printer, a restricting part for restricting the detection function of the detecting part, and a function restriction releasing part for releasing the restricted function of the detecting part. The engagement of the platen roller and the module displaces the function restriction releasing part. The displacement causes the function restriction releasing part to release the restricted function of the detecting part.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: September 13, 2011
    Assignee: Fujitsu Component Limited
    Inventors: Masahiro Tsuchiya, Yukihiro Mori, Sumio Watanabe
  • Patent number: 7922409
    Abstract: A printer which prints to a roll paper medium under the control of the printer and to a printer control method for maintaining consistently in high quality printing even at the end of a roll paper print medium. The printer conveys roll paper 11 through a paper transportation path and prints to the roll paper 11 using a print head 21 carried on a carriage 23 that moves transverse to the transportation path. When the trailing end 11a of the roll paper is detected, the printer advances and then stops the print medium so that the trailing end 11a of the roll paper is positioned on the transportation path outside of the carriage path 53.
    Type: Grant
    Filed: March 27, 2007
    Date of Patent: April 12, 2011
    Assignee: Seiko Epson Corporation
    Inventor: Kenichi Murahashi
  • Patent number: 7827914
    Abstract: In one embodiment, a method includes applying at least one invisible mark to media, sensing the at least one invisible mark with separate sensors, and determining a speed of the media from signals of the separate sensors.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: November 9, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Cesar Fernandez, David Florez
  • Patent number: 7778589
    Abstract: A method and apparatus for adjusting the print area by positioning a sheet in an imaging device utilizing length data from a prior sheet. A first sheet length is measured and thereafter utilized to determine the print zone for a subsequent sheet.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: August 17, 2010
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Bruce A Axten, Daniel J. Magnusson
  • Patent number: 7775733
    Abstract: A printer apparatus is disclosed. The printer includes a medium feeding passage for conveying a medium; print head for performing a spacing and for performing a printing processing on the medium; a detector for detecting a first end position in a widthwise direction of the medium at a first position in a medium conveyance direction and for detecting a second end position in the widthwise direction of the medium at a second position in the medium conveyance direction; and a comparator for comparing the first end position with the second end position detected with the detector. The control of the print head is performed according to the compared result from the comparator.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: August 17, 2010
    Assignee: Oki Data Corporation
    Inventors: Yasuo Noda, Hiroaki Ono, Hironobu Sakai, Naoki Sato
  • Patent number: 7627281
    Abstract: A sheet tray (1) includes at least one sheet detecting sensor (10) for detecting a sheet set on a sheet setting surface (2). The sheet detecting sensor (10) includes (i) a movable detecting section having a projecting section which projects from the sheet setting surface (2), and (ii) a detecting section for detecting rotation of the movable detecting section, and the projecting section have a ball-like shape. This makes it possible to provide (i) a sheet tray which is able to prevent breakage of sheet and breakage of the projecting section even when setting the sheet on the sheet setting surface from any direction and any angle; (ii) a sheet transporting apparatus including the sheet tray; and (iii) an image forming apparatus including the sheet tray.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: December 1, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kenji Tanaka, Yoshiyuki Nishizato, Kenji Nakanishi, Tomohiko Okada, Akira Kohno
  • Patent number: 7488128
    Abstract: The invention provides an image recording apparatus comprising a recording unit in which at least two recording heads are disposed such that end portions of respective nozzle columns overlap each other in a recording medium conveying direction or such that the nozzle columns are located adjacent to each other at a predetermined interval, the image recording apparatus executing recording position recording medium width-direction moving processing for a detected deviation (lateral deviation amount) of a recording medium at both-lateral ends of the recording medium, image data distribution processing with a joint of the overlapping as a boundary, image-recording density-varying processing for the joint, and recording position recording medium conveying-direction moving processing in order to perform high quality image jointing processing, and an image recording method of the image recording apparatus.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: February 10, 2009
    Assignee: Olympus Corporation
    Inventors: Toshinao Aruga, Keiichiro Tawara, Naoki Ishii
  • Patent number: 7460825
    Abstract: A sheet feeding apparatus includes a sheet placing tray on which a sheet is placed, a feeding member for feeding the sheet placed on the sheet placing tray, a first sheet detection unit for detecting presence of the sheet on the sheet placing tray at a first detection position, and a second sheet detection unit for detecting presence of the sheet on the sheet placing tray at a second detection position disposed on an upstream side of the first detection position in a sheet feeding direction. A control unit controls the feeding member so as not to perform the sheet feeding operation when the first detection unit detects the sheet and the second detection unit does not detect the sheet.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: December 2, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kei Sawanaka, Satoshi Sugita
  • Publication number: 20080279609
    Abstract: A paper detection device is provided for a label printer, including an enclosure and at least one detection circuit board. The enclosure has opposite side faces on which at least one guide rail and a handle are formed and a bottom on which at least one resilient stop block is formed. The enclosure forms at least one detection channel through which a label to be printed is allowed to pass therethrough. The detection circuit board is arranged inside the enclosure to detect the label passing through the detection channel. The guide rails formed on the opposite sides of the enclosure allow the paper detection device to be fit into a receptacle pre-formed inside the label printer and the handle allows a user to move the enclosure by pulling the handle to thereby adjust the position of the enclosure inside the receptacle. The resilient stop block on the bottom of the enclosure facilitates to secure and position the enclosure inside the receptacle.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 13, 2008
    Inventor: Ching-Wen Chen
  • Patent number: 7410317
    Abstract: A first end position in a widthwise direction of a medium at a first position in a lengthwise direction of the medium, while a second end position in the widthwise direction of the medium at a second position in the lengthwise direction of the medium, and a comparison of the detected first end position with the detected second end position is performed to make predetermined processing according to the compared result.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: August 12, 2008
    Assignee: Oki Data Corporation
    Inventors: Yasuo Noda, Hiroaki Ono, Hironobu Sakai, Naoki Sato
  • Patent number: 7396175
    Abstract: A sheet carrier, includes an upstream side sheet carriage part; a downstream side sheet carriage part; an overlapping detection part which is provided between the upstream side sheet carriage part and the downstream side sheet carriage part and is configured to detect an overlap of a front sheet and a rear sheet carried by the upstream side sheet carriage part and the downstream side sheet carriage part; and a driving control part configured to drive the upstream side sheet carriage part and the downstream side sheet carriage part at the time when the sheets are carried so that the sheets are carried via the sheet carriage path, and configured to stop driving the upstream side sheet carriage part and continue driving the downstream side sheet carriage part at the time when the overlap of the sheets is detected by the overlapping detection part.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: July 8, 2008
    Assignee: Ricoh Company, Ltd.
    Inventor: Kenji Ueda
  • Patent number: 7391043
    Abstract: Various edge detection arrangements are disclosed, including an edge detection method and arrangement that utilizes outputs of commonly illuminated reference and edge sensors as the inputs for a comparator. The reference sensor is configured to have a wide field of view and the edge sensor is configured to have a narrow, high gain, field of view. Therefore, the reference sensor has a broad signal response to an edge passage and the edge sensor a steep and narrow signal response. When the two signals are biased to cross each other, the comparator output changes state, indicating passage of an edge. Because the reference sensor provides a base signal level directly related to the real time illumination level that the edge sensor also receives, the reference sensor provides a switch point along the transition ramp of the edge sensor that integrates a majority of the random error sources.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: June 24, 2008
    Assignee: ZIH Corp.
    Inventor: Robert A. Ehrhardt, Jr.
  • Publication number: 20080101843
    Abstract: The roll paper printer of the subject invention has a control to detect failure of a paper detector in accordance with a method for detecting such failure. The printer 1 is constructed so that the paper transportation path is open when the cover 3 to the roll paper compartment 10 is open and includes a paper detector 40 and a control unit 30 to determine if the paper detector 40 is faulty. A failure warning is provided by a warning indicator 7(S7, 8) to indicate failure of the paper detector 40 when the cover 3 has been open continuously for at least a first set time (S6) and the output state of the paper detector 40 has not changed even once to a no-paper state within the first set time. Preferably, the printing operation of the printer 1 is disabled upon determining that the paper detector 40 is faulty to permit replacement of the paper detector. Problems attributable to paper detector failure, such as soiling the platen with ink can thus be prevented.
    Type: Application
    Filed: October 29, 2007
    Publication date: May 1, 2008
    Inventors: Kenichi Murahashi, Junichi Arai, Toshiaki Koike
  • Publication number: 20080063459
    Abstract: A printer for performing a printing operation on a printing medium, includes an optical sensor, operable to detect the printing medium; an emission intensity adjuster, operable to adjust emission intensity of a light-emitting element included in the optical sensor; and an output monitor, operable to monitor an output voltage of the optical sensor so as to control the emission intensity adjuster to adjust the emission intensity.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 13, 2008
    Applicant: Seiko Epson Corporation
    Inventors: Kenji Hatada, Toru Hayashi
  • Publication number: 20080044216
    Abstract: A paper size detecting apparatus includes a paper width guider configured to move from side to side to set paper sheets loaded in a paper feeding part in a widthwise direction, a detecting sensor disposed at the paper width guider, and a detected band disposed at the paper feeding part in a widthwise direction of the paper sheets to face the detecting sensor.
    Type: Application
    Filed: March 19, 2007
    Publication date: February 21, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Hyun KIM
  • Publication number: 20070243004
    Abstract: A system and a device for printing an image, and a paper for printing an image thereon, which help reduce a printing mistake, thereby minimize waste of high-priced papers. The system includes a print instruction unit, a paper, a detection unit, a print determination unit, and a print unit. The device includes a detection unit, a print determination unit, and a print unit. The paper is configured to record paper type data in advance. The detection unit detects the paper type data from the paper. The print instruction unit transmits paper specific data and instructs the print device to perform printing through a network. Only if the paper specific data and the detected data correspond to each other, the print determination unit outputs print permission data. Based on the permission data, the print unit prints an image onto one of the unprinted paper.
    Type: Application
    Filed: April 10, 2007
    Publication date: October 18, 2007
    Applicant: Kyocera Mita Corporation
    Inventor: Naoki Kuwasaki
  • Patent number: 7275880
    Abstract: A thermal activation apparatus comprises a housing having an insertion slot for insertion therethrough of a heat-sensitive adhesive sheet. A sensor detects the heat-sensitive adhesive sheet inserted through the insertion slot and outputs a corresponding detection signal for determining a start time of the thermal activation apparatus. A transfer unit transfers the heat-sensitive adhesive sheet and a thermal activation unit thermally activates a heat-sensitive adhesive layer of the heat-sensitive adhesive sheet. An ejection unit ejects the heat-sensitive adhesive sheet after thermal activation. A control unit disposed within the housing controls operation of the thermal activation apparatus and includes a printer communication unit for communicating the thermal activation apparatus with a printer for printing on a printable surface of the heat-sensitive adhesive sheet before or after thermal activation of the heat-sensitive adhesive layer of the heat-sensitive adhesive sheet.
    Type: Grant
    Filed: May 12, 2004
    Date of Patent: October 2, 2007
    Assignee: Seiko Instruments Inc.
    Inventors: Tatsuya Obuchi, Minoru Hoshino, Yoshinori Sato, Norimitsu Sanbongi
  • Patent number: 7227069
    Abstract: A portable modular device for the purpose of sensing key movement of a piano or keyboard, processing key movement information, and communicating at least key-note ON/OFF and key-note velocity information. A portion of the modular device, the key sensor strip, inserts between the keys and fallboard and mounts atop a piano or keyboard.
    Type: Grant
    Filed: January 21, 2004
    Date of Patent: June 5, 2007
    Inventor: Stephen N. Sanderson
  • Patent number: 7131782
    Abstract: A paper edge sensing apparatus for borderless printing comprises a first paper sensor mounted in connection with the carrier and the frame in the upstream of a paper convey direction of an ink jet position of the ink jet nozzles to detect sheet edges, and a controller controlling operations of the ink jet nozzles of the printer head according to a signal from the first paper sensor to control paper print margins.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: November 7, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jong-sung Jung
  • Patent number: 7107903
    Abstract: There is provided a sheet-fed printing press that is capable of rapidly performing printing preparatory work for more secured double sheet detection. A double-sheet-detector control part judges whether an ultrasonic double sheet detector outputs double sheet detected signal during test printing or during feeding a first printing sheet of successively fed printing sheets in large quantity or successive printing. Where double sheet detected signal was output, it is judged that the detection made by the ultrasonic double sheet detector is erroneous so that the double-sheet-detector control part switches to a photoelectric double sheet detector to be employed as a double sheet detector for use in large quantity or successive printing.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: September 19, 2006
    Assignee: Ryobi Ltd.
    Inventors: Minoru Tokinaga, Masamichi Sasaki, Kiyomi Utsumi
  • Patent number: 7032519
    Abstract: Controlling a sensor mechanism for a printing machine, in which the sensor mechanism in a printing machine detects, in an initial operational mode, at least one mark and the detection of the mark initiates a second operational mode in which the optical density and the color of the mark are detected by the sensor mechanism.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: April 25, 2006
    Assignee: Eastman Kodak Company
    Inventors: Wolfgang Eberhard Luxem, Ralph Petersen
  • Patent number: 7024124
    Abstract: A reference time ts, which corresponds to a period of time a sheet S needs to move passed a detection position P1 where a sheet detection sensor 841 is disposed, is set in advance in accordance with the length of the sheet S. After a time t1 from the start of driving of a gate roller, as the leading edge of the sheet S transported to a nip area N which is between the heater roller 91 and a pressurizing roller 92 arrives at the detection position P1, an output from the sheet detection sensor 841 changes to an L-level. When the transportation of the sheet has been normal, the sensor output returns to an H-level after a reference time ts or a longer time. On the contrary, upon occurrence of a jam J2 that the sheet S has got wrapped around the heater roller 91, the leading edge of the sheet S moves backward, and therefore, a duration tm in which the sensor output is kept at the L-level becomes shorter than the reference time ts.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: April 4, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Keiichi Taguchi, Naoyuki Okumura
  • Patent number: 7018121
    Abstract: A media sensor for an image forming apparatus is operative to sense and distinguish opaque, transparent or no media in a media path. In one embodiment, an optical source and detector are positioned on opposite sides of the media path, at an acute, non-zero angle with respect to a direction normal to the media path. In other embodiments, an optical source and detector are co-located on the same side of the media path with an optical barrier between them, and one or more reflective surfaces positioned on the opposite side. With no media in the media path, the detector receives a readily detectable amount of optical energy emitted by the source. For opaque media, the detector receives very little, if any, optical energy emitted by the source. For transparent media, the detector receives a level of optical energy between that in the cases of opaque media and no media.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: March 28, 2006
    Assignee: Lexmark International, Inc.
    Inventors: Raymond Jay Barry, John Parker Richey, Michael David Maul, Steven R. Rehmel
  • Patent number: 7011400
    Abstract: The values of the detection signals of a record medium and the placement face thereof detected as a recording head moves from one end of the record medium to an opposite end are stored. A predetermined threshold value is found based on a profile found from the stored values of the detection signals. Both ends of the record medium are determined according to the threshold value and the width of the record medium is found. Accordingly, the threshold value matching the used record medium can be set, so that an easy determination can be made as to whether or not change of the detection signal exceeding the threshold value occurs and change of the detection signal falling below the threshold value occurs, and the width of the record medium can be found accurately.
    Type: Grant
    Filed: March 10, 2003
    Date of Patent: March 14, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Shuichi Nakano
  • Patent number: 7001089
    Abstract: A thermal printer has a main body frame and a platen roller rotatably and removably mounted in a preselected position on the main body frame. A thermal head is mounted on the main body frame for movement into and out of pressure contact with the platen roller during a printing operation and while the platen roller is in the preselected position for recording printing data on a recording medium disposed between the thermal head and the platen roller. A detecting device detects a preselected state of the thermal printer in which the platen roller is in the preselected position and in which the recording medium is disposed between the platen roller and the thermal head.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: February 21, 2006
    Assignee: Seiko Instruments Inc.
    Inventors: Shuji Tozaki, Noriyoshi Shoji, Katsuari Sato, Kimitaka Hirai
  • Patent number: 6984082
    Abstract: A printing apparatus comprises feeding means, light-emitting means, and a light-receiving sensor, and is capable of detecting a change in an output value of the light-receiving sensor that is caused by the medium to be printed, which has been fed by the feeding means, blocking the light, which has been emitted by the light-emitting means, wherein, by moving the light-emitting means and the light-receiving sensor in a main scanning direction, the printing apparatus detects, at a plurality of positions, changes in the output value that are caused by an upper or lower edge of the medium to be printed blocking the light, and based on a result of the detection, the printing apparatus obtains a position, in the feeding direction, of either one of a left edge or a right edge of the upper or lower edge that is fed leading or trailing the other in the feeding direction.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: January 10, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Hironori Endo
  • Patent number: 6969207
    Abstract: Recognizing a print substrate in the vicinity of a sensor within a printing machine, whereby a change in the capacitance of the system formed by the sensor and a surface of an area in which a print substrate should be recognized, is recognized by the sensor. In this way, print substrates can already be identified on the basis of a dielectric constant that is different from that of air.
    Type: Grant
    Filed: August 6, 2003
    Date of Patent: November 29, 2005
    Assignee: Eastman Kodak Company
    Inventors: Dirk Kahl, Wolfgang Eberhard Luxem, Karlheinz Walter Peter, Sönke Schmidt
  • Patent number: 6966713
    Abstract: A print media edge detection method including: generating reference data by scanning an edge zone of a sheet of print media using an optical sensor and detecting the amount of reflected light; if the edge zone of the sheet lies in a sensing zone of the optical sensor, calculating measuring data by scanning the edge zone and detecting the amount of reflected light; checking a voltage range of the edge zone from the measuring data, calculating a most frequently appearing voltage value within the voltage range, and setting the most frequently appearing voltage value as an edge position voltage value; and setting a position of the sheet corresponding to the edge position voltage value in the reference data as an edge position. Since the edge position is exactly detected, a printing error of the edge position decreases.
    Type: Grant
    Filed: July 15, 2004
    Date of Patent: November 22, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Tae-young Kim
  • Patent number: 6952536
    Abstract: A method of an embodiment of the invention is disclosed that advances media sheets through an image-forming device such that each successive pair of media sheets are advanced at least substantially adjacent to one another. The method transmissively optically senses a leading edge of each of the media sheets and a lagging edge of each of the media sheets. The method detects occurrence of an out-of-media sheets situation where a length of time after the lagging edge of one of the media sheets has been optically sensed exceeds a threshold length of time.
    Type: Grant
    Filed: October 4, 2003
    Date of Patent: October 4, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steven Soar, Matthew A. Shepherd
  • Patent number: 6945721
    Abstract: An image-forming device includes a media sensor having a light-emitting element and a light-receiving element for detecting edge positions of a paper based on values outputted from the light-receiving element as the target detection area of the media sensor is moved in relation to the paper. The value of a current to be supplied to the light-emitting element for edge detection is determined in the following manner. First, the media sensor is moved to the center of the paper-conveying path (S110). Then, the paper is conveyed to a prescribed position (S120-S150). Next, the value of the current that should be supplied to the light-emitting element (light amount adjusting value) in order that output from the light-receiving element will reach a desired value is determined at a position A on the paper at which the target detection area of the media sensor is being presently located (S160, S170).
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: September 20, 2005
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tatsuya Sato
  • Patent number: 6937263
    Abstract: An image forming apparatus including a detector, a write controller, and a light controller. The detector detects, with an optical sensor, an edge of a recording medium in a direction perpendicular to a reading medium convey direction. The write controller shifts an image write position in the direction perpendicular to the recording medium convey direction on the basis of a detection result of the detector. The light controller controls a light emission amount of the optical sensor to set an output of the optical sensor to a predetermined value at a predetermined portion in an area where the detection result of the optical sensor is effective.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: August 30, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Teruhiko Namiki, Katsuhiro Wada
  • Patent number: 6888356
    Abstract: The method of detecting plastics material, in particular for a postal sorting installation through which articles pass, is intended to distinguish automatically between articles having an outside surface made of plastics material and articles having an outside surface made of paper. The method consists in moving each article past an electrostatic generator, and then past a member for evaluating electrostatic charge so as to compare the charge on the article with a reference value in order to detect whether the article is a plastics article or a paper article. The method increases the reliability of detection.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: May 3, 2005
    Assignee: Solystic
    Inventor: Dian Jean-Raoul
  • Patent number: 6863459
    Abstract: A medium-edge setting device detects edges of a paper (S110) and acquires data for left and right edge candidate positions (S120). The medium-edge setting device determines whether the difference between left and right center-edge distances is less than or equal to a predetermined value (S150). If so (S150: YES), the right edge position is set to the right edge candidate position and the left edge position is set to the left edge candidate position (S160). If not (S150: NO), the paper is conveyed a predetermined amount (S190) and the paper edge detection is repeated. If the repetitions of the paper-edge detecting process exceed a predetermined number (S180: NO), then the larger of the left and right center-edge distances is set as the distance from the center of the paper to each edge position, and the left and right edge positions are set according to this distance (S200, S210, S220).
    Type: Grant
    Filed: December 1, 2003
    Date of Patent: March 8, 2005
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Takahiro Ikeno, Tadahiro Kunii
  • Patent number: 6860665
    Abstract: A passive linear encoder includes a loop and a sensor. The loop is configured to engage print media and to move in concert with, and under power of, the print media. The sensor is positioned to scan indicia defined on an inner surface of the loop.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: March 1, 2005
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Steven B. Elgee, Steve O. Rasmussen
  • Publication number: 20040257430
    Abstract: A sheet feeding device includes a cassette in which recording media are configured to be stacked. The cassette includes a rear end regulation member configured to be moved in a direction in which the recording media are fed to regulate rear ends of the recording media and a size detection device configured to swing with movement of the rear end regulation member. The sheet feeding device further includes a size determination device arranged within an area corresponding to a width of the cassette in the direction in which the recording media are fed. The size determination device is configured to determine a size of the recording media stacked in the cassette by detecting a position of the size detection device.
    Type: Application
    Filed: March 31, 2004
    Publication date: December 23, 2004
    Inventors: Toshiaki Takahashi, Kazuyuki Uchida, Mitsuru Yamada, Mamoru Yorimoto
  • Patent number: 6830398
    Abstract: A recording apparatus has a feed mechanism for feeding a recording medium loaded on a recording-medium loading section; a recording unit for recording on the recording medium fed by the feed mechanism; and a recording-medium discriminating device for discriminating the type of recording medium loaded on the recording-medium loading section. The type of recording medium is discriminated by the recording-medium discriminating device before the feeding operation by the feed mechanism, and the operation of the recording unit is controlled according to the type of recording medium stored in a memory.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: December 14, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Katsuyuki Yokoi
  • Patent number: RE41778
    Abstract: To provide a recording-material type determination apparatus and recording-material type determination method which can determine the type of recording material using simple calculations as well as to provide an image forming apparatus capable of obtaining stable image quality independent of the type of recording material using the apparatus and method. Based on data read by a read unit which reads surface images of recording material, a first calculation unit calculates the depth of irregularities in the surface of recording material and stores the results of calculation in a register A while a second calculation unit calculates the spacing of irregularities on the surface of the recording material and stores the results of calculation in a register B. Based on the values in the registers A and B, the type of recording material such as gloss paper, plain paper, rough paper or OHT is determined.
    Type: Grant
    Filed: April 13, 2005
    Date of Patent: September 28, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Maruyama, Masanori Akita
  • Patent number: RE44152
    Abstract: To provide a recording-material type determination apparatus and recording-material type determination method which can determine the type of recording material using simple calculations as well as to provide an image forming apparatus capable of obtaining stable image quality independent of the type of recording material using the apparatus and method. Based on data read by a read unit which reads surface images of recording material, a first calculation unit calculates the depth of irregularities in the surface of recording material and stores the results of calculation in a register A while a second calculation unit calculates the spacing of irregularities on the surface of the recording material and stores the results of calculation in a register B. Based on the values in the registers A and B, the type of recording material such as gloss paper, plain paper, rough paper or OHT is determined.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: April 16, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Maruyama, Masanori Akita