Minbu
Ryuichi Minbu, Ebina-Shi JP
Patent application number | Description | Published |
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20100221029 | IMAGE FORMING APPARATUS - To provide an image forming apparatus capable of increasing the life of a rotating cam while preventing the occurrence of a shock jitter and transfer failure. The image forming apparatus is configured to execute a forced movement process for rotating the rotating cam to forcibly move a secondary transfer roller against a biasing force of a bias coil spring at a pre-entry timing prior to the entry of the front edge of a recording sheet into a secondary transfer position, and a pressure intensifying process for rotating the rotating cam to increase transfer pressure at a timing immediately after the entry of the front edge of the recording sheet into the secondary transfer position. As the forced movement process, the image forming apparatus executes, alternately, a first forced movement process for normally driving and rotating the rotating cam, and a second forced movement process for inversely driving and rotating the rotating cam, at a predetermined timing. | 09-02-2010 |
Ryuichi Minbu, Kanagawa JP
Patent application number | Description | Published |
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20090060611 | IMAGE FORMING APPARATUS - A contact member makes contact with a surface of an image carrier belt to form a transfer nip. A guiding member guides a recording medium fed by a feeding unit to a guide target point on an upstream side of an entering point of the transfer nip on the surface of the image carrier belt in a moving direction of the image carrier belt. The guiding member is arranged at a position satisfying 100 [μm]>|L−Vt×L/Vp|, where L is distance from the entering point to the guide target point on the image carrier belt, Vp is moving speed of the recording medium, and Vt is surface moving speed of the image carrier belt | 03-05-2009 |
Ryuuichi Minbu, Kanagawa JP
Patent application number | Description | Published |
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20080232867 | Transfer nip roller, transfer device, and image forming apparatus - In a transfer nip roller operative to transfer an image from an image carrier to a recording medium, a ratio (We | 09-25-2008 |
20090142083 | IMAGE FORMING APPARATUS - An image forming apparatus includes a plurality of image bearing members, a developing unit, an intermediate transfer belt, a secondary transfer body, and a registration roller. A linear speed difference between the intermediate transfer belt and the secondary transfer body is variably set based on a basis weight of a recording medium. | 06-04-2009 |
20100061741 | Image forming apparatus - A transferring unit transfers a toner image from an image carrier to a recording medium. A fixing unit fixes the toner image transferred onto the recording medium. A conveying unit conveys the recording medium from the transferring unit to the fixing unit along a conveyance surface. A guiding member receives the recording medium from the conveying unit and guides the recording medium to a fixing nip of the fixing unit along a guiding surface. An angle changing unit changes an angle between the conveyance surface and the guiding surface according to the type of the recording medium. | 03-11-2010 |
20120003017 | IMAGE FORMING APPARATUS - An image forming apparatus includes a plurality of image bearing members, a developing unit, an intermediate transfer belt, a secondary transfer body, and a registration roller. A linear speed difference between the intermediate transfer belt and the secondary transfer body is variably set based on a basis weight of a recording medium. | 01-05-2012 |