Patents by Inventor Akihiko Shimazu
Akihiko Shimazu 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: 10437178Abstract: An image forming apparatus which forms an image on a recording medium, includes: a belt which is endless and rotationally driven; a drive roller which is wound around the belt to rotationally drive the belt; a position detector which is arranged along an axial direction of the drive roller to detect deviation of the belt; a steering roller which is wound around the belt and corrects the deviation of the belt detected by the position detector; and a controller which controls the steering roller, wherein the controller determines a deterioration state of the belt based on a change amount linked with change of a friction coefficient of the belt until a predetermined period elapses after starting use of the belt.Type: GrantFiled: July 10, 2018Date of Patent: October 8, 2019Assignee: KONICA MINOLTA, INC.Inventor: Akihiko Shimazu
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Publication number: 20190011861Abstract: An image forming apparatus which forms an image on a recording medium, includes: a belt which is endless and rotationally driven; a drive roller which is wound around the belt to rotationally drive the belt; a position detector which is arranged along an axial direction of the drive roller to detect deviation of the belt; a steering roller which is wound around the belt and corrects the deviation of the belt detected by the position detector; and a controller which controls the steering roller, wherein the controller determines a deterioration state of the belt based on a change amount linked with change of a friction coefficient of the belt until a predetermined period elapses after starting use of the belt.Type: ApplicationFiled: July 10, 2018Publication date: January 10, 2019Inventor: Akihiko SHIMAZU
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Patent number: 7605833Abstract: A writing device to write an image onto a photoconductor, including a print head having plural LEDs, a first supporting member, having a position determining section to determine the position of the print head, and an adjustment screw, and a second supporting member, having a reference shaft which comes into contact with the first supporting member and movably supports the first supporting member while moving to or separating from the photoconductor, and a pressuring member which presses the first supporting member against the reference shaft, wherein the second supporting member is engaged with the first supporting member by the adjustment screw, whereby when the adjustment screw is rotated, the print head is shifted along with the first supporting member, and a first direction joining the position determining section and the adjustment screw makes a right angle with a second direction joining the adjustment screw and the reference shaft.Type: GrantFiled: December 20, 2007Date of Patent: October 20, 2009Assignee: Konica Minolta Business Technologies, Inc.Inventor: Akihiko Shimazu
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Publication number: 20080199219Abstract: A writing device to write an image onto a photoconductor, including a print head having plural LEDs, a first supporting member, having a position determining section to determine the position of the print head, and an adjustment screw, and a second supporting member, having a reference shaft which comes into contact with the first supporting member and movably supports the first supporting member while moving to or separating from the photoconductor, and a pressuring member which presses the first supporting member against the reference shaft, wherein the second supporting member is engaged with the first supporting member by the adjustment screw, whereby when the adjustment screw is rotated, the print head is shifted along with the first supporting member, and a first direction joining the position determining section and the adjustment screw makes a right angle with a second direction joining the adjustment screw and the reference shaft.Type: ApplicationFiled: December 20, 2007Publication date: August 21, 2008Inventor: Akihiko SHIMAZU
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Patent number: 7403732Abstract: An image forming apparatus includes: a photoreceptor; a charger that electrically charges the photoreceptor; an exposing unit having an LED printing head that forms a latent image on the photoreceptor; a developing unit that develops a toner image corresponding to the latent image on the photoreceptor; a blower unit that sends air to a space between the photoreceptor and the LED printing head; a first shielding member provided on the charger, which intercepts the air coming from the blower unit to enter inside the charger; and a second shielding member provided on the developing unit, which intercepts the air coming from the blower unit to enter inside the developing unit.Type: GrantFiled: July 17, 2006Date of Patent: July 22, 2008Assignee: Konica Minolta Business Technologies, Inc.Inventors: Akihiko Shimazu, Ritsuo Fujii, Shinobu Konno
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Publication number: 20070110468Abstract: An image forming apparatus includes: a photoreceptor; a charger that electrically charges the photoreceptor; an exposing unit having an LED printing head that forms a latent image on the photoreceptor; a developing unit that develops a toner image corresponding to the latent image on the photoreceptor; a blower unit that sends air to a space between the photoreceptor and the LED printing head; a first shielding member provided on the charger, which intercepts the air coming from the blower unit to enter inside the charger; and a second shielding member provided on the developing unit, which intercepts the air coming from the blower unit to enter inside the developing unit.Type: ApplicationFiled: July 17, 2006Publication date: May 17, 2007Inventors: Akihiko Shimazu, Ritsuo Fujii, Shinobu Konno
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Publication number: 20060239732Abstract: An image forming apparatus, including an image carrier, an image forming section for forming toner image on the image carrier, an image transfer device for transferring the toner images from the image carrier to a transfer material, and a registration member for conveying the transfer material to a position where the image transfer device transfers the toner image in synchronization with the image formation conducted by the image forming section, wherein the registration member includes a drive roller having a core and a rubber layer formed on the core, and a driven roller coming into contact with the drive roller, wherein the drive roller satisfies formula (1), d/D?57.6 L?1.2, and formula (2), d÷0.5, where D is diameter of the drive roller, d is thickness of the rubber layer, and L is conveyance distance from the registration member to the image transferring position.Type: ApplicationFiled: January 25, 2006Publication date: October 26, 2006Inventors: Tetsu Sekine, Akihiko Shimazu, Yujiro Ishida
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Patent number: 6751437Abstract: An image forming apparatus is provide which includes an ADU that can sustain productivity per unit of time, without controlling the operation of registration rollers at fixed intervals determined by CPM that leads to temporary stopping of paper. During non-stacked circulatory conveyance for forming images on both sides of a sheet of paper, the position or the timing is corrected at which the paper is accelerated and/or decelerated in a circulatory conveyance path, whereby the image forming apparatus does not control the operation of registration rollers at fixed intervals determined by CPM when forming another image on a back side of the paper.Type: GrantFiled: January 27, 2003Date of Patent: June 15, 2004Assignee: Konica CorporatioinInventor: Akihiko Shimazu
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Publication number: 20030143004Abstract: An image forming apparatus is provide which comprises an ADU that can sustain productivity per unit of time, without controlling the operation of registration rollers at fixed intervals determined by CPM that leads to temporary stopping of paper. During non-stacked circulatory conveyance for forming images on both sides of a sheet of paper, the position or the timing is corrected at which the paper is accelerated and/or decelerated in a circulatory conveyance path, whereby the image forming apparatus does not control the operation of registration rollers at fixed intervals determined by CPM when forming another image on a back side of the paper.Type: ApplicationFiled: January 27, 2003Publication date: July 31, 2003Applicant: Konica CorporationInventor: Akihiko Shimazu