Patents by Inventor Gakushi Tanaka
Gakushi Tanaka 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: 11970349Abstract: A cassette comprises a sheet housing portion that has an opening in an upper face and houses sheets, a cassette cover that can be attached and detached and covers at least a portion of the opening, a first protruding portion that is provided in one edge portion of the cassette cover and protrudes toward a bottom face of the sheet housing portion, and a second protruding portion that is provided in the other edge portion of the cassette cover and opposes the first protruding portion, wherein the sheet housing portion includes a projection-shaped portion that protrudes toward the first protruding portion and a position regulating portion that has a gap into which the second protruding portion enters, and the first protruding portion is provided with a receiving portion into which the projection-shaped portion enters.Type: GrantFiled: July 27, 2022Date of Patent: April 30, 2024Assignee: Canon Kabushiki KaishaInventors: Gakushi Tanaka, Akira Nakashima, Kazuto Ishihara, Yasuhito Tsubakimoto
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Publication number: 20240059086Abstract: A recording apparatus, including: a recording portion; a case in which the recording portion is accommodated; and a cover which has a holding portion to be grasped at a time of carrying the recording apparatus at a position adjacent to the case, in which the case has a boundary wall surface extending in a direction intersecting with a bottom surface of the recording apparatus toward an inside of the casing, in which the cover has a contact portion that abuts against the boundary wall surface of the case in a vicinity of the holding portion, and in which the contact portion and the boundary wall surface are arranged in line in a direction that intersects with a direction of formation of the side wall, and the contact portion and the boundary wall surface abut against each other to separate between an inside and an outside of the casing.Type: ApplicationFiled: November 2, 2023Publication date: February 22, 2024Inventors: Yuji Kagami, Gakushi Tanaka, Toru Yada, Yasuhito Tsubakimoto
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Patent number: 11840100Abstract: A recording apparatus, including: a recording portion; a case in which the recording portion is accommodated; and a cover which has a holding portion to be grasped at a time of carrying the recording apparatus at a position adjacent to the case, in which the case has a boundary wall surface extending in a direction intersecting with a bottom surface of the recording apparatus toward an inside of the casing, in which the cover has a contact portion that abuts against the boundary wall surface of the case in a vicinity of the holding portion, and in which the contact portion and the boundary wall surface are arranged in line in a direction that intersects with a direction of formation of the side wall, and the contact portion and the boundary wall surface abut against each other to separate between an inside and an outside of the casing.Type: GrantFiled: February 11, 2022Date of Patent: December 12, 2023Assignee: Canon Kabushiki KaishaInventors: Yuji Kagami, Gakushi Tanaka, Toru Yada, Yasuhito Tsubakimoto
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Publication number: 20230341809Abstract: Disclosed is a drawing apparatus including: a base member; and a drawing member that is attached so as to be capable of being drawn and pressed in a reciprocating direction with respect to the base member, wherein the base member has a couple application mechanism that applies a couple for correcting skewing of the drawing member with respect to the reciprocating direction to the drawing member as a reaction of a force by which the drawing member is pressed, and wherein the couple application mechanism is configured so that a distance between action lines of two forces generating the couple becomes large as a pressing amount of the drawing member with respect to the base member increases.Type: ApplicationFiled: June 29, 2023Publication date: October 26, 2023Inventors: Mitsuyuki Fujibayashi, Gakushi Tanaka, Toru Yada, Yuji Kagami
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Patent number: 11754775Abstract: A light emitting device includes first and second light emitting elements; and a light guiding member including first and second light receiving portion corresponding to the first and second light emitting elements and configured to emit the light received by the first and second light receiving portions from a light emitting portion via a light guiding portion. The light guiding portion includes a reflecting surface forming portion between the first light receiving portion and the second light receiving portion in the first direction. The reflecting surface forming portion includes first and second reflecting surfaces. The first reflecting surface is formed by surfaces having different angles including a surface that reflects the light from the first light receiving portion to a side of the first light receiving portion.Type: GrantFiled: September 13, 2022Date of Patent: September 12, 2023Assignee: Canon Kabushiki KaishaInventors: Kazuto Ishihara, Yasuhito Tsubakimoto, Gakushi Tanaka, Akira Nakashima
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Patent number: 11733640Abstract: Disclosed is a drawing apparatus including: a base member; and a drawing member that is attached so as to be capable of being drawn and pressed in a reciprocating direction with respect to the base member, wherein the base member has a couple application mechanism that applies a couple for correcting skewing of the drawing member with respect to the reciprocating direction to the drawing member as a reaction of a force by which the drawing member is pressed, and wherein the couple application mechanism is configured so that a distance between action lines of two forces generating the couple becomes large as a pressing amount of the drawing member with respect to the base member increases.Type: GrantFiled: February 11, 2022Date of Patent: August 22, 2023Assignee: Canon Kabushiki KaishaInventors: Mitsuyuki Fujibayashi, Gakushi Tanaka, Toru Yada, Yuji Kagami
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Publication number: 20230078594Abstract: A light emitting device includes first and second light emitting elements; and a light guiding member including first and second light receiving portion corresponding to the first and second light emitting elements and configured to emit the light received by the first and second light receiving portions from a light emitting portion via a light guiding portion. The light guiding portion includes a reflecting surface forming portion between the first light receiving portion and the second light receiving portion in the first direction. The reflecting surface forming portion includes first and second reflecting surfaces. The first reflecting surface is formed by surfaces having different angles including a surface that reflects the light from the first light receiving portion to a side of the first light receiving portion.Type: ApplicationFiled: September 13, 2022Publication date: March 16, 2023Inventors: Kazuto Ishihara, Yasuhito Tsubakimoto, Gakushi Tanaka, Akira Nakashima
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Publication number: 20230060034Abstract: A cassette comprises a sheet housing portion that has an opening in an upper face and houses sheets, a cassette cover that can be attached and detached and covers at least a portion of the opening, a first protruding portion that is provided in one edge portion of the cassette cover and protrudes toward a bottom face of the sheet housing portion, and a second protruding portion that is provided in the other edge portion of the cassette cover and opposes the first protruding portion, wherein the sheet housing portion includes a projection-shaped portion that protrudes toward the first protruding portion and a position regulating portion that has a gap into which the second protruding portion enters, and the first protruding portion is provided with a receiving portion into which the projection-shaped portion enters.Type: ApplicationFiled: July 27, 2022Publication date: February 23, 2023Inventors: Gakushi Tanaka, Akira Nakashima, Kazuto Ishihara, Yasuhito Tsubakimoto
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Publication number: 20220263959Abstract: A reading apparatus comprising a lower case, a reading portion, a drive portion and a stay is used. The reading portion moves between an open position in which the lower case is open and a closed position in which the lower case is closed and accommodates a reading sensor. The drive portion moves the reading sensor in a moving direction. The stay is coupled to the reading portion rotatably in one end and coupled to the lower case rotatably in the other end and moves a rotation shaft with in a direction orthogonal to the shaft. The drive portion is located outside a movable range of the reading sensor. When the reading portion is in the closed position, the stay is disposed in an area in which the stay overlaps the drive portion in the moving direction and overlaps the drive portion in height direction.Type: ApplicationFiled: February 11, 2022Publication date: August 18, 2022Inventors: Gakushi Tanaka, Toru Yada, Yuji Kagami, Yasuhito Tsubakimoto
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Publication number: 20220260950Abstract: Disclosed is a drawing apparatus including: a base member; and a drawing member that is attached so as to be capable of being drawn and pressed in a reciprocating direction with respect to the base member, wherein the base member has a couple application mechanism that applies a couple for correcting skewing of the drawing member with respect to the reciprocating direction to the drawing member as a reaction of a force by which the drawing member is pressed, and wherein the couple application mechanism is configured so that a distance between action lines of two forces generating the couple becomes large as a pressing amount of the drawing member with respect to the base member increases.Type: ApplicationFiled: February 11, 2022Publication date: August 18, 2022Inventors: Mitsuyuki Fujibayashi, Gakushi Tanaka, Toru Yada, Yuji Kagami
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Publication number: 20220263960Abstract: A reading apparatus includes a main body that includes an original document plate and a reading portion configured to read an image from the original document, and an operation portion that is attached in the original document plate. The operation portion includes: a front face casing portion; and a rear face casing portion that is engaged with the front face casing portion at an operation surface. An upper end portion of the operation portion is as high as the original document plate or higher than the original document plate, and in an engaging portion of the front face casing portion and the rear face casing portion at the upper end portion, an upper edge of the front face casing portion has a shorter distance to the lower end portion of the operation portion than the upper edge of the rear face casing portion.Type: ApplicationFiled: February 4, 2022Publication date: August 18, 2022Inventors: Akira Nakashima, Toru Yada, Mitsuyuki Fujibayashi, Gakushi Tanaka, Yuji Kagami
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Publication number: 20220258504Abstract: A recording apparatus, including: a recording portion; a case in which the recording portion is accommodated; and a cover which has a holding portion to be grasped at a time of carrying the recording apparatus at a position adjacent to the case, in which the case has a boundary wall surface extending in a direction intersecting with a bottom surface of the recording apparatus toward an inside of the casing, in which the cover has a contact portion that abuts against the boundary wall surface of the case in a vicinity of the holding portion, and in which the contact portion and the boundary wall surface are arranged in line in a direction that intersects with a direction of formation of the side wall, and the contact portion and the boundary wall surface abut against each other to separate between an inside and an outside of the casing.Type: ApplicationFiled: February 11, 2022Publication date: August 18, 2022Inventors: Yuji Kagami, Gakushi Tanaka, Toru Yada, Yasuhito Tsubakimoto
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Patent number: 10599091Abstract: A cabinet includes a first body side engagement and a second body side engagement mounted on a body and a first cover side engagement and a second cover side engagement mounted on a cover. Slide restriction faces of the first cover side engagement and the second cover side engagement come into contact with slide restriction faces of the first body side engagement and the second body side engagement, respectively, to restrict sliding of a slider when the first cover side engagement does not engage the first body side engagement. The slide restriction face of at least one of the first body side engagement and the first cover side engagement has a length that is greater than a length of the slide restriction face of other one of the first body side engagement, the first cover side engagement, the second body side engagement, and the second cover side engagement.Type: GrantFiled: December 12, 2018Date of Patent: March 24, 2020Assignee: Ricoh Company, Ltd.Inventors: Makoto Kikura, Yoshihide Ohta, Shoji Asanuma, Gakushi Tanaka, Tomoya Tanaka, Akimitsu Obana, Taiga Shoen
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Publication number: 20190227478Abstract: A cabinet includes a first body side engagement and a second body side engagement mounted on a body and a first cover side engagement and a second cover side engagement mounted on a cover. Slide restriction faces of the first cover side engagement and the second cover side engagement come into contact with slide restriction faces of the first body side engagement and the second body side engagement, respectively, to restrict sliding of a slider when the first cover side engagement does not engage the first body side engagement. The slide restriction face of at least one of the first body side engagement and the first cover side engagement has a length that is greater than a length of the slide restriction face of other one of the first body side engagement, the first cover side engagement, the second body side engagement, and the second cover side engagement.Type: ApplicationFiled: December 12, 2018Publication date: July 25, 2019Applicant: Ricoh Company, Ltd.Inventors: Makoto Kikura, Yoshihide Ohta, Shoji Asanuma, Gakushi Tanaka, Tomoya Tanaka, Akimitsu Obana, Taiga Shoen
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Patent number: 9519265Abstract: An image forming apparatus includes an apparatus body, an image forming device provided in the apparatus body and forming an image on a surface of a recording medium, a cooler to cool the image forming device, a temperature detector to detect a temperature around the apparatus body, and a controller including a computing part to count a driving period of the image forming device and a memory to store a computed value obtained by the computing part as a counter value. The controller controls driving of the image forming device and driving of the cooler based on a detected temperature obtained by the temperature detector and the counter value. The controller adjusts the driving of the image forming device irrespective of the counter value to a regular driving speed when the detected temperature is lower than a reference temperature.Type: GrantFiled: September 1, 2015Date of Patent: December 13, 2016Assignee: RICOH COMPANY, LTD.Inventor: Gakushi Tanaka
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Publication number: 20160091859Abstract: An image forming apparatus includes an apparatus body, an image forming device provided in the apparatus body and forming an image on a surface of a recording medium, a cooler to cool the image forming device, a temperature detector to detect a temperature around the apparatus body, and a controller including a computing part to count a driving period of the image forming device and a memory to store a computed value obtained by the computing part as a counter value. The controller controls driving of the image forming device and driving of the cooler based on a detected temperature obtained by the temperature detector and the counter value. The controller adjusts the driving of the image forming device irrespective of the counter value to a regular driving speed when the detected temperature is lower than a reference temperature.Type: ApplicationFiled: September 1, 2015Publication date: March 31, 2016Applicant: Ricoh Company, Ltd.Inventor: Gakushi TANAKA
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Publication number: 20150293494Abstract: An image forming apparatus includes a photoconductor; an exposure device to expose a surface of the photoconductor to form an electrostatic latent image on the photoconductor; a developing device to develop the electrostatic latent image formed on the photoconductor with developer to render the electrostatic latent image visible as a toner image; a transfer device to transfer the toner image onto a recording medium; a fixing device to fix the toner image onto the recording medium; and an evacuation space disposed in an area adjacent to the photoconductor to accommodate the exposure device during detachment and attachment of the photoconductor. The evacuation space serves as a vent duct to circulate air to cool an image forming unit including the photoconductor during printing.Type: ApplicationFiled: April 7, 2015Publication date: October 15, 2015Applicant: Ricoh Company, Ltd.Inventor: Gakushi TANAKA
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Publication number: 20150139793Abstract: A mounting device for a cooling fan includes a fan housing, an impeller; and a mounting surface with a projection to secure the cooling fan, in which a space between the fan housing and the impeller at an intake side is different from a space between the fan housing and the impeller at an exhaust side, and the projection has such a height as to cause the impeller to contact the projection only when the cooling fan is mounted backwards.Type: ApplicationFiled: October 14, 2014Publication date: May 21, 2015Applicant: RICOH COMPANY, LTD.Inventor: Gakushi TANAKA
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Patent number: 8849180Abstract: An image forming apparatus includes an image forming part configure to form an image on a sheet of paper; and a paper ejection tray, provided above an image forming part, including a supporting part configured to support the sheet of paper ejected after having the image formed thereonto by the image forming part, and a radiation opening configured to radiate therethrough heat from the image forming part to the outside air. The radiation opening is provided lower than the supporting part.Type: GrantFiled: August 10, 2011Date of Patent: September 30, 2014Assignee: Ricoh Company, Ltd.Inventors: Masaki Kimura, Gakushi Tanaka, Tsuyoshi Endo
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Patent number: 8639149Abstract: An image forming apparatus includes an exhaust fan, an exhaust duct, and a filter. The exhaust duct is configured to discharge a gas in an apparatus body to the outside thereof by using an airflow generated by the rotation of the exhaust fan. The filter is provided in a pathway of an airflow flowing through the exhaust duct, arranged substantially parallel to a ventilation direction of the exhaust duct, and configured to reduce chemical substances contained in the gas.Type: GrantFiled: January 31, 2011Date of Patent: January 28, 2014Assignee: Ricoh Company, Ltd.Inventor: Gakushi Tanaka