Patents by Inventor Seiichi Handa
Seiichi Handa 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).
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Patent number: 9772809Abstract: A printed matter delivery system, in which a printed matter delivery apparatus delivers printed matter having an image formed by an image forming apparatus is provided. The system includes a print management unit managing a print job performed by the image forming apparatus; a delivery management unit managing a delivery job performed by the printed matter delivery apparatus; a delivery authentication processing unit performing a matching confirmation process to determine whether authentication information of the delivery job matches authentication information of the print job; a print controlling unit causing the image forming apparatus to generate the printed matter based on the print job authenticated by the delivery authentication processing unit and to output the printed matter to the printed matter delivery apparatus; and a receipt confirmation unit obtaining receipt information input into the printed matter delivery apparatus at a delivery destination.Type: GrantFiled: March 15, 2016Date of Patent: September 26, 2017Assignee: RICOH COMPANY, LTD.Inventors: Kazunori Bannai, Yasuhisa Ehara, Katsunori Shoji, Daisuke Maeda, Yusuke Funayama, Keiichi Serizawa, Kazuhiro Takabayashi, Seiichi Handa
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Publication number: 20160274840Abstract: A printed matter delivery system, in which a printed matter delivery apparatus delivers printed matter having an image formed by an image forming apparatus is provided. The system includes a print management unit managing a print job performed by the image forming apparatus; a delivery management unit managing a delivery job performed by the printed matter delivery apparatus; a delivery authentication processing unit performing a matching confirmation process to determine whether authentication information of the delivery job matches authentication information of the print job; a print controlling unit causing the image forming apparatus to generate the printed matter based on the print job authenticated by the delivery authentication processing unit and to output the printed matter to the printed matter delivery apparatus; and a receipt confirmation unit obtaining receipt information input into the printed matter delivery apparatus at a delivery destination.Type: ApplicationFiled: March 15, 2016Publication date: September 22, 2016Applicant: RICOH COMPANY, LTD.Inventors: Kazunori BANNAI, Yasuhisa EHARA, Katsunori SHOJI, Daisuke MAEDA, Yusuke FUNAYAMA, Keiichi SERIZAWA, Kazuhiro TAKABAYASHI, Seiichi HANDA
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Patent number: 8331822Abstract: An image forming apparatus includes a plurality of image bearing members, each of which is configured to bear a portion of a pattern image including a plurality of reference images in a given form, an endless moving member facing the plurality of image bearing members and configured to receive the pattern image, an image detecting unit configured to detect the plurality of reference images, a rotational angle detecting unit configured to separately detect each image bearing member at a given rotational angle, and a controller configured to detect a speed deviation pattern for each revolution of each image bearing member. The controller is configured to detect the speed deviation pattern based on a result obtained from a phase component and a quadrature component of a frequency signal generated from the detection result obtained by the rotational angle detecting unit and a result of detecting the plurality of reference images in the pattern image transferred onto the endless moving member.Type: GrantFiled: March 2, 2011Date of Patent: December 11, 2012Assignee: Ricoh Co., Ltd.Inventors: Kazuhiko Kobayashi, Joh Ebara, Yasuhisa Ehara, Kouji Amanai, Seiichi Handa, Yuji Matsuda, Toshiyuki Uchida, Noriaki Funamoto, Keisuke Sugiyama
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Patent number: 8311421Abstract: A detecting unit detects a conveying speed of a conveyer member. A driving unit drives the conveyer member. A first control unit performs a first feedback control of the conveying speed based on detected conveying speed and a predetermined target conveying speed. A second control unit detects a rotation speed of the driving unit and performs a second feedback control of the rotation speed based on detected rotation speed and a predetermined target rotation speed. When a determining unit determines that the detecting unit is anomalous, a switching unit switches from the first feedback control to the second feedback control.Type: GrantFiled: April 17, 2009Date of Patent: November 13, 2012Assignee: Ricoh Company, LimitedInventor: Seiichi Handa
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Publication number: 20110150531Abstract: An image forming apparatus includes a plurality of image bearing members, each of which is configured to bear a portion of a pattern image including a plurality of reference images in a given form, an endless moving member facing the plurality of image bearing members and configured to receive the pattern image, an image detecting unit configured to detect the plurality of reference images, a rotational angle detecting unit configured to separately detect each image bearing member at a given rotational angle, and a controller configured to detect a speed deviation pattern for each revolution of each image bearing member. The controller is configured to detect the speed deviation pattern based on a result obtained from a phase component and a quadrature component of a frequency signal generated from the detection result obtained by the rotational angle detecting unit and a result of detecting the plurality of reference images in the pattern image transferred onto the endless moving member.Type: ApplicationFiled: March 2, 2011Publication date: June 23, 2011Inventors: Kazuhiko KOBAYASHI, Joh Ebara, Yasuhisa Ehara, Kouji Amanai, Seiichi Handa, Yuji Matsuda, Toshiyuki Uchida, Noriaki Funamoto, Keisuke Sugiyama
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Patent number: 7937007Abstract: An image forming apparatus includes a plurality of image bearing members, each of which is configured to bear a portion of a pattern image including a plurality of reference images in a given form, an endless moving member facing the plurality of image bearing members and configured to receive the pattern image, an image detecting unit configured to detect the plurality of reference images, a rotational angle detecting unit configured to separately detect each image bearing member at a given rotational angle, and a controller configured to detect a speed deviation pattern for each revolution of each image bearing member. The controller is configured to detect the speed deviation pattern based on a result obtained from a phase component and a quadrature component of a frequency signal generated from the detection result obtained by the rotational angle detecting unit and a result of detecting the plurality of reference images in the pattern image transferred onto the endless moving member.Type: GrantFiled: February 20, 2007Date of Patent: May 3, 2011Assignee: Ricoh Co., Ltd.Inventors: Kazuhiko Kobayashi, Joh Ebara, Yasuhisa Ehara, Kouji Amanai, Seiichi Handa, Yuji Matsuda, Toshiyuki Uchida, Noriaki Funamoto, Keisuke Sugiyama
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Patent number: 7885587Abstract: An image forming apparatus includes a control unit to control a latent image support with a target rate; a first unit to detect patterns; plural parts to be detected revolving with the support; a second unit to detect passing of the part; a first generating unit to obtain an amplitude and a phase of fluctuation and a pattern for canceling out the fluctuation from the amplitude and the phase; a second generating unit to perform a process to obtain an amplitude and a phase of fluctuation while the support rotates once or more, perform the process again, calculate a change in the amplitude and phase, and generate another pattern for canceling out the change; and a correcting unit to correct the target rate by superimposing the patterns with the target rate.Type: GrantFiled: March 13, 2009Date of Patent: February 8, 2011Assignee: Ricoh Company, Ltd.Inventors: Hiromichi Matsuda, Toshiyuki Andoh, Yasuhisa Ehara, Kazuhiko Kobayashi, Noriaki Funamoto, Seiichi Handa
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Patent number: 7778575Abstract: An imaging apparatus is disclosed that includes plural image carriers on which different-colored toner images are formed, the image carriers being driven and rotated to transfer the different-colored toner images onto one of an endless transfer member that is driven to rotate in contact with the image carriers or a transfer material that is carried by the endless transfer member. The imaging apparatus includes a phase calculating unit that extracts a periodic rotational variation component of each of the image carriers from a combination of periodic rotational variation components generated within said imaging apparatus and calculates a rotational phase of each of the image carriers based on the extracted periodic rotational variation component, and a rotational phase adjusting unit that adjusts a rotation stop phase of each of the image carriers based on the calculated rotational phase.Type: GrantFiled: March 16, 2007Date of Patent: August 17, 2010Assignee: Ricoh Company, Ltd.Inventors: Yuji Matsuda, Yasuhisa Ehara, Kazuhiko Kobayashi, Joh Ebara, Noriaki Funamoto, Seiichi Handa, Hiromichi Matsuda
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Patent number: 7729024Abstract: A color-drift correcting method in an image forming apparatus includes a first and a second color-drift correcting. The first color-drift correcting includes correcting the color-drift amount in a sub scanning direction and a skew relative to the reference color image being based on each color-drift amount of at least three mark-patterns, each of which mark-pattern is formed each color image, so as to decide a corrected-image line as a virtual image line for each color, assumed when the color images are superposed onto a transfer media. A second color-drift correcting includes correcting the color-drift amount in the sub scanning direction so that the virtual image lines corresponding to each of the colors other than the reference color intersect with the virtual image line of the reference color at at least two points.Type: GrantFiled: October 4, 2006Date of Patent: June 1, 2010Assignee: Ricoh Company, Ltd.Inventors: Kazuhiko Kobayashi, Joh Ebara, Yasuhisa Ehara, Noriaki Funamoto, Toshiyuki Uchida, Seiichi Handa, Yuji Matsuda
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Patent number: 7693468Abstract: An image forming apparatus includes a plurality of image carriers, an optical writing unit, a plurality of developing units, a transfer member, a transfer unit, an image sensor, and a control unit. In at least one embodiment, the image sensor is configured to sense a positional displacement detection pattern including visible images on the transfer member to detect a positional displacement between the visible images on each of the plurality of image carriers. The control unit is configured to execute a positional displacement correction control to calculate an amount of the positional displacement and determine respective target drive speeds of the plurality of drive sources. The control unit is also configured to control so that the positional displacement detection pattern is formed when the plurality of drive sources are driven at substantially identical speeds and the positional displacement detection pattern thus formed is sensed by the image sensor.Type: GrantFiled: April 27, 2007Date of Patent: April 6, 2010Assignee: Ricoh Company, Ltd.Inventors: Yasuhisa Ehara, Kazuhiko Kobayashi, Joh Ebara, Kouji Amanai, Seiichi Handa, Yuji Matsuda, Toshiyuki Uchida, Noriaki Funamoto, Keisuke Sugiyama
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Patent number: 7653332Abstract: An image forming apparatus includes: image detectors to detect conditions of images, respectively, formed on a transfer member; sensors to detect rotational displacements of latent image carriers, respectively; and a controller to perform at least phase adjustment control and image-to-image displacement control before performing image forming operations on image carriers, respectively. Image-to-image displacement control includes adjusting image forming timing on the image carriers based upon conditions of a detection image (including images transferred from the image carrier) detected by the image detectors, respectively. Speed-variation detection control includes detecting a condition of a speed-variation detection image (including an image transferred from each of image carriers) via the image detectors, and determining speed variation of the image carriers, respectively, per one revolution based upon outputs of the image detectors and the sensors.Type: GrantFiled: April 27, 2007Date of Patent: January 26, 2010Assignee: Ricoh Company, Ltd.Inventors: Yasuhisa Ehara, Kazuhiko Kobayashi, Joh Ebara, Noriaki Funamoto, Seiichi Handa, Yuji Matsuda, Kouji Amanai, Toshiyuki Uchida, Keisuke Sugiyama
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Patent number: 7630657Abstract: An image forming apparatus, in which a program for carrying out an image forming method is provided, includes a transfer member to receive respective images formed on a plurality of image bearing members, an image detecting unit to detect the images conveyed on the transfer member, a paper length detecting unit to detect a length of a recording medium in a sheet travel direction, a counting unit to count the number of recording media and to change a count up value according to a detection result by the paper length detecting unit, and a control unit to control an image forming timing with respect to the image bearing members based on a detection timing of the image and to perform a positional deviation adjustment each time a counted value increases by a predetermined amount so as to reduce an amount of a positional deviation of the image.Type: GrantFiled: April 30, 2007Date of Patent: December 8, 2009Assignee: Ricoh Company, Ltd.Inventors: Yasuhisa Ehara, Kazuhiko Kobayashi, Joh Ebara, Seiichi Handa, Noriaki Funamoto, Toshiyuki Uchida, Keisuke Sugiyama, Kouji Amanai
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Publication number: 20090274473Abstract: A detecting unit detects a conveying speed of a conveyer member. A driving unit drives the conveyer member. A first control unit performs a first feedback control of the conveying speed based on detected conveying speed and a predetermined target conveying speed. A second control unit detects a rotation speed of the driving unit and performs a second feedback control of the rotation speed based on detected rotation speed and a predetermined target rotation speed. When a determining unit determines that the detecting unit is anomalous, a switching unit switches from the first feedback control to the second feedback control.Type: ApplicationFiled: April 17, 2009Publication date: November 5, 2009Inventor: Seiichi Handa
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Publication number: 20090238588Abstract: An image forming apparatus includes a control unit to control a latent image support with a target rate; a first unit to detect patterns; plural parts to be detected revolving with the support; a second unit to detect passing of the part; a first generating unit to obtain an amplitude and a phase of fluctuation and a pattern for canceling out the fluctuation from the amplitude and the phase; a second generating unit to perform a process to obtain an amplitude and a phase of fluctuation while the support rotates once or more, perform the process again, calculate a change in the amplitude and phase, and generate another pattern for canceling out the change; and a correcting unit to correct the target rate by superimposing the patterns with the target rate.Type: ApplicationFiled: March 13, 2009Publication date: September 24, 2009Inventors: Hiromichi Matsuda, Toshiyuki Andoh, Yasuhisa Ehara, Kazuhiko Kobayashi, Noriaki Funamoto, Seiichi Handa
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Patent number: 7532842Abstract: A color printing apparatus having a color registration difference correction function, the color registration difference caused by a difference of rotation speeds of each photosensitive drum after a print mode changes from a one photosensitive drum mode to an all photosensitive drums mode.Type: GrantFiled: November 15, 2006Date of Patent: May 12, 2009Assignee: Ricoh Company, Ltd.Inventors: Seiichi Handa, Yasuhisa Ehara, Joh Ebara, Kazuhiko Kobayashi, Toshiyuki Uchida, Noriaki Funamoto
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Publication number: 20070274746Abstract: An image forming apparatus, in which a program for carrying out an image forming method is provided, includes a transfer member to receive respective images formed on a plurality of image bearing members, an image detecting unit to detect the images conveyed on the transfer member, a paper length detecting unit to detect a length of a recording medium in a sheet travel direction, a counting unit to count the number of recording media and to change a count up value according to a detection result by the paper length detecting unit, and a control unit to control an image forming timing with respect to the image bearing members based on a detection timing of the image and to perform a positional deviation adjustment each time a counted value increases by a predetermined amount so as to reduce an amount of a positional deviation of the image.Type: ApplicationFiled: April 30, 2007Publication date: November 29, 2007Inventors: YASUHISA EHARA, Kazuhiko Kobayashi, Joh Ebara, Seiichi Handa, Noriaki Funamoto, Toshiyuki Uchida, Keisuke Sugiyama, Kouji Amanai
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Publication number: 20070258729Abstract: An image forming apparatus is disclosed. In at least one embodiment, the apparatus includes a plurality of image carriers to carry an image; a plurality of drivers to drive the image carriers; a plurality of drive-force transmitting members to transmit a driving-force from the drivers to image carriers; a developing unit, provided to the image carriers, to develop the image; a transfer member, facing the image carriers, to receive the image from the image carriers sequentially; an image detector to detect the image on the transfer member to check a detection timing of the image; a sensor, provided to each of the image carriers, to detect a rotational speed of image carriers; and a controller to conduct an image-to-image displacement control, a speed-deviation checking, and a phase adjustment control for each of the plurality of image carriers with the image detector and sensor.Type: ApplicationFiled: April 27, 2007Publication date: November 8, 2007Inventors: Yasuhisa Ehara, Kazuhiko Kobayashi, Joh Ebara, Noriaki Funamoto, Seiichi Handa, Yuji Matsuda, Kouji Amanai, Toshiyuki Uchida, Keisuke Sugiyama
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Publication number: 20070253736Abstract: An image forming apparatus includes a plurality of image carriers, an optical writing unit, a plurality of developing units, a transfer member, a transfer unit, an image sensor, and a control unit. In at least one embodiment, the image sensor is configured to sense a positional displacement detection pattern including visible images on the transfer member to detect a positional displacement between the visible images on each of the plurality of image carriers. The control unit is configured to execute a positional displacement correction control to calculate an amount of the positional displacement and determine respective target drive speeds of the plurality of drive sources. The control unit is also configured to control so that the positional displacement detection pattern is formed when the plurality of drive sources are driven at substantially identical speeds and the positional displacement detection pattern thus formed is sensed by the image sensor.Type: ApplicationFiled: April 27, 2007Publication date: November 1, 2007Inventors: Yasuhisa Ehara, Kazuhiko Kobayashi, Joh Ebara, Kouji Amanai, Seiichi Handa, Yuji Matsuda, Toshiyuki Uchida, Noriaki Funamoto, Keisuke Sugiyama
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Publication number: 20070217830Abstract: An imaging apparatus is disclosed that includes plural image carriers on which different-colored toner images are formed, the image carriers being driven and rotated to transfer the different-colored toner images onto one of an endless transfer member that is driven to rotate in contact with the image carriers or a transfer material that is carried by the endless transfer member. The imaging apparatus includes a phase calculating unit that extracts a periodic rotational variation component of each of the image carriers from a combination of periodic rotational variation components generated within said imaging apparatus and calculates a rotational phase of each of the image carriers based on the extracted periodic rotational variation component, and a rotational phase adjusting unit that adjusts a rotation stop phase of each of the image carriers based on the calculated rotational phase.Type: ApplicationFiled: March 16, 2007Publication date: September 20, 2007Inventors: Yuji Matsuda, Yasuhisa Ehara, Kazuhiko Kobayashi, Joh Ebara, Noriaki Funamoto, Seiichi Handa, Hiromichi Matsuda
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Publication number: 20070196132Abstract: An image forming apparatus includes a plurality of image bearing members, each of which is configured to bear a portion of a pattern image including a plurality of reference images in a given form, an endless moving member facing the plurality of image bearing members and configured to receive the pattern image, an image detecting unit configured to detect the plurality of reference images, a rotational angle detecting unit configured to separately detect each image bearing member at a given rotational angle, and a controller configured to detect a speed deviation pattern for each revolution of each image bearing member. The controller is configured to detect the speed deviation pattern based on a result obtained from a phase component and a quadrature component of a frequency signal generated from the detection result obtained by the rotational angle detecting unit and a result of detecting the plurality of reference images in the pattern image transferred onto the endless moving member.Type: ApplicationFiled: February 20, 2007Publication date: August 23, 2007Inventors: Kazuhiko Kobayashi, Joh Ebara, Yasuhisa Ehara, Kouji Amanai, Seiichi Handa, Yuji Matsuda, Toshiyuki Uchida, Noriaki Funamoto, Keisuke Sugiyama