Patents by Inventor Eiji Nishikawa

Eiji Nishikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20090317099
    Abstract: An image forming apparatus according to the present invention includes a replaceable unit in which a plurality of replaceable parts are installed, a storage section to store a replacement time count value, a life duration time count value and a use count value, a display section and a control section to update the use count value in the storage section by counting the number of times of use of each of the parts installed in the unit, to determine whether a part which reached the life duration time exists or not based on the use count value of each of the parts which are update and the life duration time count value, and to display information for urging a replacement of the part which reached the life duration time and a part in which the use count value reached between the replacement time count value and the life duration time count value in the display section when the control section determines that the part which reached the life duration time exists.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 24, 2009
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Kosuke MASUMOTO, Hiroyuki MARUYAMA, Toshihiro MOTOI, Satoshi OGATA, Katsunori TAKAHASHI, Eiji NISHIKAWA
  • Publication number: 20090269089
    Abstract: In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.
    Type: Application
    Filed: September 16, 2008
    Publication date: October 29, 2009
    Applicant: KONICA CORPORATION
    Inventors: Eiji NISHIKAWA, Hiroyuki Maruyama, Hiroyuki Arai, Toshihiro Motoi, Kenji Izumiya, Ryuji Okutomi, Shinobu Kishi, Satoshi Ogata, Kenichi Ozawa, Tadayuki Ueda, Yumiko Higashi
  • Publication number: 20090245831
    Abstract: An image forming apparatus including: an image carrier; an exposure section that deflects an optical beam using a rotating polygon mirror to expose a surface of the image carrier; a developing section that supplies a toner in order to visualize an electrostatic latent image formed by the exposure section on the image carrier with a toner; and a control section that controls at least the exposure section and the developing section, wherein the control section controls the exposure section and the developing section so as to form a solid image for correction on a non image area which passes through an exposure position in a period within which a plane phase of the rotating polygon mirror is corrected among non image areas between imaging areas on the image carrier.
    Type: Application
    Filed: March 19, 2009
    Publication date: October 1, 2009
    Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.
    Inventors: Eiji Nishikawa, Satoshi Ogata
  • Publication number: 20090238586
    Abstract: An image forming apparatus includes a control section which controls a forming section and a detection section to form an image patterns at a non-image area between image areas on an image carrier, to detect the image patterns as required, and to execute various types of compensation operations for correcting image forming conditions, and, when a timing of executing a first compensation operation coincides with a timing of executing a second compensation operation and the image pattern for the first compensation operation and the image pattern for the second compensation operation have a relationship such that the positions of forming the image patterns on the image carrier do not overlap each other, controls the image forming section to form both image patterns in the same non-image area.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 24, 2009
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Eiji Nishikawa, Satoshi Ogata
  • Patent number: 7542058
    Abstract: In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is representing by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: June 2, 2009
    Assignee: Konica Corporation
    Inventors: Eiji Nishikawa, Hiroyuki Maruyama, Hiroyuki Arai, Toshihiro Motoi, Kenji Izumiya, Ryuji Okutomi, Shinobu Kishi, Satoshi Ogata, Kenichi Ozawa, Tadayuki Ueda, Yumiko Higashi
  • Patent number: 7499193
    Abstract: There is described an apparatus, which includes an image-forming section to form a multicolor image on a recording medium by recording the unicolor images in such a manner that the unicolor images overlap each other, based on printing image data sets of them, and a controlling section that determines at least a sub-scanning velocity in a sub-scanning direction relative to the recording medium, corresponding to a printing magnification factor, so as to adjust an output-start timing in the sub-scanning direction for every printing image data set, in response to the sub-scanning velocity determined in advance. Further, the controlling section also determines a main-scanning velocity in a main-scanning direction, corresponding to the printing magnification factor, so as to adjust output-start timings in both the main-scanning direction and the sub-scanning direction for every printing image data set, in response to the main-scanning velocity and the sub-scanning velocity, both determined in advance.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: March 3, 2009
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventor: Eiji Nishikawa
  • Patent number: 7499072
    Abstract: A color image forming apparatus for forming a color image on a recording medium, includes: an image carrier; a polygon mirror; a signal forming device for forming a pseudo main scanning reference signal having a fixed cycle; and a controller for controlling image formation on a predetermined surface of the recording medium on the basis of the pseudo main scanning reference signal formed by the signal forming device and a main scanning reference signal which is formed by detecting a light beam that is scanned by the polygon mirror.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: March 3, 2009
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Kenji Izumiya, Satoshi Ogata, Eiji Nishikawa, Yumiko Higashi
  • Publication number: 20090003893
    Abstract: An image forming apparatus that corrects color misregistration of an image including: an image forming device having an endless image carrier for carrying an image to be formed on the recording medium, wherein the image forming device forms the image in an image area that corresponds to the recording medium on the image carrier and also forms a color misregistration correction mark in an image boundary area that is sandwiched between the image area and the next image area following the image area on the image carrier; a mark detecting section for detecting the correction mark on the image boundary area; and a control device to change an interval for feeding the recording medium based on a fluctuating period of the color misregistration corresponding to an orbiting distance of the image carrier, and to expand image boundary area of the image carrier to form the mark at a changed position.
    Type: Application
    Filed: March 31, 2008
    Publication date: January 1, 2009
    Inventors: Eiji NISHIKAWA, Satoshi OGATA
  • Patent number: 7453480
    Abstract: In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.
    Type: Grant
    Filed: May 10, 2005
    Date of Patent: November 18, 2008
    Assignee: Konica Corporation
    Inventors: Eiji Nishikawa, Hiroyuki Maruyama, Hiroyuki Arai, Toshihiro Motoi, Kenji Izumiya, Ryuji Okutomi, Shinobu Kishi, Satoshi Ogata, Kenichi Ozawa, Tadayuki Ueda, Yumiko Higashi
  • Patent number: 7428708
    Abstract: An image processing apparatus includes a CPU core, and displays a related image according to selection of a main menu icon. For example, in a case that a timer counting for each frame holds a predetermined value, it is determined whether or not the display of the related image has to be switched. If it is determined that the switch is necessary, the display of the related image is switched, and if it is not necessary, the display of the related image is not switched. The time is reset when the selection of the main menu icon and the display of the related image are changed. For example, in a case that selection of the main menu icon continues to be quickly changed, the timer does not reach the predetermined value, so that the related image is never switched.
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: September 23, 2008
    Assignee: Nintendo Co., Ltd.
    Inventors: Motoi Okamoto, Eiji Nishikawa
  • Patent number: 7392002
    Abstract: When conducting a color-shift-correcting mode using a registration mark formed by the image forming section on an image carrier, the image detecting section outputs the image detection signal representing the line width of the registration mark and the control section calculates the line width of the registration mark from the image detection signal. The control section compares a line width of the registration mark with a predetermined reference value of the line width to discriminate between abnormality and normality. If normality, the control section continues the color-shift-correcting mode and if abnormality the control section conducts the image forming system restoration mode after stopping the execution of the color-shift-correcting mode. Therefore, even in the case where a white spot is generated for some reasons on the registration mark, the color-shift-correcting mode can be conducted on the normal registration mark with the help of the image forming system restoration mode.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: June 24, 2008
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Eiji Nishikawa, Ryuji Okutomi, Satoshi Ogata, Tadayuki Ueda
  • Patent number: 7130097
    Abstract: There is provided a controller that controls and drives the polygon mirror to a target speed with keeping a predetermined phase. When the controller controls the speed of the polygon mirror along with the image magnification adjustment, the controller controls the polygon mirror with a waiting time t1 from an end of the speed control of the polygon mirror for stabilizing before the phase control and a waiting time t2 from an end of the phase control of the polygon mirror for stabilizing, the t1 and t2 being set with a relation of t1<t2.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: October 31, 2006
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Yumiko Higashi, Kenji Izumiya, Eiji Nishikawa
  • Patent number: 7126725
    Abstract: In a document reading apparatus having a scanning exposure reading system by which a document placed on a platen is scanning exposed by an optical system and a document image is read out, or a document reading system by which a moving document is read out by an optical system, at the first collection position and the second collection position which are different in the sub-scanning direction of the scanning expose on a reference density plate, the first shading correction data and the second shading correction data are respectively read in the main scanning direction, and the shading position is corrected on the basis of the read first and second shading correction data.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: October 24, 2006
    Assignee: Konica Corporation
    Inventors: Ryuji Okutomi, Hiroyuki Futami, Jun Nakagawa, Tadayuki Ueda, Eiji Nishikawa
  • Publication number: 20060158712
    Abstract: There is provided a controller that controls and drives the polygon mirror to a target speed with keeping a predetermined phase. When the controller controls the speed of the polygon mirror along with the image magnification adjustment, the controller controls the polygon mirror with a waiting time t1 from an end of the speed control of the polygon mirror for stabilizing before the phase control and a waiting time t2 from an end of the phase control of the polygon mirror for stabilizing, the t1 and t2 being set with a relation of t1<t2.
    Type: Application
    Filed: September 27, 2005
    Publication date: July 20, 2006
    Inventors: Yumiko Higashi, Kenji Izumiya, Eiji Nishikawa
  • Patent number: 7079172
    Abstract: The invention concerns an image-forming apparatus employing a clock-generating circuit, which generates dot clock pulses utilized for an image-writing section of the image-forming apparatus. The clock-generating circuit includes a digital-delay dot clock adjusting section to generate first dot clock pulses having a predetermined number of pulses within a predetermined time interval at a constant exposing range of the image-writing section, wherein each period of the first dot clock pulses is slightly increased or reduced by changing a selection for a plurality of delayed clock pulses, which are generated by delaying clock-pulses, outputted from a reference oscillator, in slightly different delay times; and a jitter suppressing section to suppress a jitter component included in the first dot clock pulses, wherein the jitter suppressing section divides the first dot clock pulses to generate second dot clock pulses, and then, multiplies the second dot clock pulses to generate the dot clock pulses.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: July 18, 2006
    Assignee: Konica Corporation
    Inventors: Kenji Izumiya, Hiroyuki Maruyama, Tadayuki Ueda, Ryuji Okutomi, Eiji Nishikawa, Satoshi Ogata, Shinobu Kishi
  • Publication number: 20060153603
    Abstract: When conducting a color-shift-correcting mode using a registration mark formed by the image forming means on an image carrier, the image detecting means outputs the image detection signal representing the line width of the registration mark and the control section calculates the line width of the registration from the image detection signal. The control means compares a line width of the registration mark with a predetermined reference value of the line width to discriminate between abnormality and normality. If normality, the control means continues the color-shift-correcting mode and if abnormality the control means conducts the image forming system restoration mode after stopping the execution of the color-shift-correcting mode. Therefore, even in the case where a white spot is generated for some reasons on the registration mark, the color-shift-correcting mode can be conducted on the normal registration mark with the help of the image forming system restoration mode.
    Type: Application
    Filed: September 26, 2005
    Publication date: July 13, 2006
    Inventors: Eiji Nishikawa, Ryuji Okutomi, Satoshi Ogata, Tadayuki Ueda
  • Publication number: 20060112353
    Abstract: An image processing apparatus includes a CPU core, and displays a related image according to selection of a main menu icon. For example, in a case that a timer counting for each frame holds a predetermined value, it is determined whether or not the display of the related image has to be switched. If it is determined that the switch is necessary, the display of the related image is switched, and if it is not necessary, the display of the related image is not switched. The time is reset when the selection of the main menu icon and the display of the related image are changed. For example, in a case that selection of the main menu icon continues to be quickly changed, the timer does not reach the predetermined value, so that the related image is never switched.
    Type: Application
    Filed: November 18, 2005
    Publication date: May 25, 2006
    Applicant: Nintendo Co., Ltd.
    Inventors: Motoi Okamoto, Eiji Nishikawa
  • Patent number: 6972732
    Abstract: An information display system in which information can be referred to without a power supply anytime and anywhere like information recorded on paper, and in which information can be rewritten repeatedly, and such information can be outputted instantaneously and in large numbers. An image accepted by an image input unit (1 in FIG. 1) is converted by a signal processing unit (11) into a data format for writing the image into a display unit (3). An information sending unit (12) controls plural display elements (3-1 to 3-N), and it sends the information to-be-displayed to the plural display elements (3-1 to 3-N) in parallel through a connector array (13). Thus, the image accepted by the image input unit (1) can be instantaneously displayed on the multiple display elements (3-1 to 3-N). The display elements (3-1 to 3-M) have storability.
    Type: Grant
    Filed: June 6, 2000
    Date of Patent: December 6, 2005
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Eiji Nishikawa
  • Publication number: 20050264646
    Abstract: A color image forming apparatus for forming a color image on a recording medium, includes: an image carrier; a polygon mirror; a signal forming device for forming a pseudo main scanning reference signal having a fixed cycle; and a controller for controlling image formation on a predetermined surface of the recording medium on the basis of the pseudo main scanning reference signal formed by the signal forming device and a main scanning reference signal which is formed by detecting a light beam that is scanned by the polygon mirror.
    Type: Application
    Filed: April 26, 2005
    Publication date: December 1, 2005
    Applicant: Konica Minolta Business Technologies, Inc.
    Inventors: Kenji Izumiya, Satoshi Ogata, Eiji Nishikawa, Yumiko Higashi
  • Publication number: 20050206980
    Abstract: In an image forming apparatus for forming a color image by superposing component color images, a control device obtains position data representing a forming position of each of plural registration mark images for the component color images with respect to a positional reference value arbitrarily determined, divides the position data into each of a unit reference range representing a range in which one mark image is formed, converts the position data divided for each unit reference range into those based on respective reference values representing the front edge of the unit reference ranges, extracts the position data representing ranges common to the mutually overlapping ranges each of which is represented by a couple of position data corresponding to the rising and falling edges of a passage timing pulse as read position data of the mark image of the component color, and calculates the amounts of positional deviations of the component color images from one another on the basis of the position data extracted.
    Type: Application
    Filed: May 10, 2005
    Publication date: September 22, 2005
    Applicant: KONICA CORPORATION
    Inventors: Eiji Nishikawa, Hiroyuki Maruyama, Hiroyuki Arai, Toshihiro Motoi, Kenji Izumiya, Ryuji Okutomi, Shinobu Kishi, Satoshi Ogata, Kenichi Ozawa, Tadayuki Ueda, Yumiko Higashi