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US 2010/0303519 A1Published application
Image forming apparatus capable of stably conveying recording medium
AssigneeRicoh Company, Ltd.
InventorHiroyuki OKAJI
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes an image forming mechanism, a toner image carrier, a transfer unit, an application member, a pivot around which the transfer unit rotates, and an elongate hole which engages with the pivot and through which the pivot is movable in a longitudinal direction of the elongate hole. The transfer unit includes a transferor which opposes the toner image carrier, a pre-transfer guide, a post-transfer guide, and a first positioning member which positions the transferor with respect to the toner image carrier. The image forming apparatus further includes a second positioning member which engages with the first positioning member.
Claims20
An image forming apparatus, comprising:
- an image forming mechanism which forms a toner image;
- a toner image carrier which carries the toner image;
- a transfer unit including,
- a transferor which opposes the toner image carrier to form a transfer nip at which the toner image on the toner image carrier is transferred onto a recording medium,
- a pre-transfer guide which guides the recording medium to the transfer nip, the pre-transfer guide being disposed on an upstream side from the transfer nip relative to a recording medium conveyance direction,
- a post-transfer guide which guides the recording medium away from the transfer nip, the post-transfer guide being disposed on a downstream side from the transfer nip relative to the recording medium conveyance direction, and
- a first positioning member which positions the transferor with respect to the toner image carrier;
- a second positioning member which engages with the first positioning member, the second positioning member being provided in a main body of the image forming apparatus;
- an application member which applies pressure to the transfer unit;
- a pivot around which the transfer unit rotates, the pivot being provided on one of the main body of the image forming apparatus and the transfer unit;
- and
- an elongate hole which engages with the pivot and through which the pivot is movable in a longitudinal direction of the elongate hole, the elongate hole being provided on the other of the main body of the image forming apparatus and the transfer unit.
9 more elements
An image forming apparatus, comprising:
- an image forming mechanism which forms a toner image;
- a toner image carrier which carries the toner image;
- a transfer unit which is pivotably and slidably attached to a main body of the image forming apparatus via engagement between a pivot and an elongate hole, the transfer unit including,
- a transferor which opposes the toner image carrier to form a transfer nip at which the toner image on the toner image carrier is transferred onto a recording medium,
- a pre-transfer guide which guides the recording medium to the transfer nip, the pre-transfer guide being disposed on an upstream side from the transfer nip relative to a recording medium conveyance direction,
- a post-transfer guide which guides the recording medium away from the transfer nip, the post-transfer guide being disposed on a downstream side from the transfer nip relative to the recording medium conveyance direction, and
- a first positioning member which positions the transferor with respect to the toner image carrier;
- a second positioning member which engages with the first positioning member, the second positioning member being provided in the main body of the image forming apparatus;
- and
- an application member which applies pressure to the transfer unit.
7 more elements
An image forming apparatus, comprising:
- an image forming mechanism which forms a toner image;
- a toner image carrier which carries the toner image;
- a transfer unit including,
- a transferor which opposes the toner image carrier to form a transfer nip at which the toner image on the toner image carrier is transferred onto a recording medium,
- a pre-transfer guide which guides the recording medium to the transfer nip, the pre-transfer guide being disposed on an upstream side from the transfer nip relative to a recording medium conveyance direction,
- a post-transfer guide which guides the recording medium away from the transfer nip, the post-transfer guide being disposed on a downstream side from the transfer nip relative to the recording medium conveyance direction, and
- a first positioning member which positions the transferor with respect to the toner image carrier;
- a second positioning member which engages with the first positioning member, the second positioning member being provided in a main body of the image forming apparatus;
- an application member which applies pressure to the transfer unit;
- and
- means for pivotably and slidably attaching the transfer unit to the main body of the image forming apparatus.
8 more elements
Dependencies are inferred from the claim text.