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US 2001/0018000 A1Published application
Image forming device
AssigneeSharp Kabushiki Kaisha
InventorMasashi Hirai
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Abstract
The present invention includes: image carriers provided parallel to each other in a transfer area where toner images are transferred to a transfer medium; and transfer rollers, each being associated to a different one of the image carriers, for transferring the toner images carried by the image carriers to the transfer medium, wherein: the transfer rollers are fabricated in a crown shape and so that the crown quantities of the crown shapes of the transfer rollers decrease in stages towards a downstream side along the transport direction of the transfer medium.
Claims6
An image forming device, comprises:
- image carriers provided parallel to each other in a transfer area where toner images are transferred to a transfer medium;
- and
- transfer rollers, each being associated to a different one of the image carriers, for pressing and thus transferring the toner images carried by the image carriers to the transfer medium,
- wherein:
- each of the transfer rollers is fabricated in a crown shape and so that a difference between diameters of cross sections taken at right angles to an axis in an axial midportion and in axial end portions decreases in stages towards a downstream side along a transport direction of the transfer medium.
2 more elements
Dependencies are inferred from the claim text.