Transfer apparatus and image forming apparatus
AssigneeSharp Kabushiki Kaisha
InventorsYoshie Iwakura, Susumu Murakami, Kuniaki Nakano
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Abstract
A transfer apparatus and an image forming apparatus are disclosed, in which a plurality of photosensitive drums corresponding to the respective colors are arranged along the outer peripheral surface of a transfer belt and a plurality of intermediate transfer rollers for applying a transfer field to the photosensitive drums are arranged offset downstream side from each of the photosensitive drums, respectively. In addition to that, the process, the intermediate transfer rollers are arranged in such positions that each of the nip width are increased progressively downstream side, respectively and each of the nip pressure are decreased progressively downstream side, respectively.
Claims20
A transfer apparatus which comprises a plurality of image forming units for forming an image using developing agent and a transfer belt with which said image forming units are pressed in contact, and forms on said transfer belt a single image by superposing one on another image formed in a primary transfer process by each of said image forming units sequentially transferred to said transfer belt, and transfers the formed image onto a transfer material in a secondary transfer process, while said transfer belt is made to move in a predetermined direction, wherein
- each of said image forming units is pressed in contact with said transfer belt under a different contact pressure between said transfer belt and each of said image forming units.
A transfer apparatus which comprises a plurality of image forming units for forming an image using developing agent and a transfer belt with which said image forming units are pressed in contact, and forms on said transfer belt a single image by superposing one on another image formed in a primary transfer process by each of said image forming units sequentially transferred to said transfer belt, and transfers the formed image onto a transfer material in a secondary transfer process, while said transfer belt is made to move in a predetermined direction, wherein
- each of said image forming units is pressed in contact with said transfer belt with a different contact width in said predetermined direction between said transfer belt and each of said image forming units.
An image forming apparatus comprising:
- a communication unit for receiving the image data from an external;
- and
- a transfer apparatus which comprises a plurality of image forming units for forming an image using developing agent and a transfer belt with which said image forming units are pressed in contact, and based on the image data received by said communication unit, forms on said transfer belt a single image by superposing one on another image formed in a primary transfer process by each of said image forming units sequentially transferred to said transfer belt, and transfers the formed image onto a transfer material in a secondary transfer process, while said transfer belt is made to move in a predetermined direction, wherein
- each of said image forming units is pressed in contact with said transfer belt under a different contact pressure between said transfer belt and each of said image forming units.
An image forming apparatus comprising:
- a communication unit for receiving the image data from an external;
- and
- a transfer apparatus which comprises a plurality of image forming units for forming an image using developing agent and a transfer belt with which said image forming units are pressed in contact, and based on the image data received by said communication unit, forms on said transfer belt a single image by superposing one on another image formed in a primary transfer process by each of said image forming units sequentially transferred to said transfer belt, and transfers the formed image onto a transfer material in a secondary transfer process, while said transfer belt is made to move in a predetermined direction, wherein
- each of said image forming units is pressed in contact with said transfer belt with a different contact width in said predetermined direction between said transfer belt and each of said image forming units.
Dependencies are inferred from the claim text.