Slipless drive image reproduction
AssigneeXeikon International N.V.
InventorErik Van Weverberg
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Abstract
The present invention is related to slipless drive image reproduction systems, such as printers and copiers, having one or more intermediate transfer members between the image-forming member and the receptor material. In operation, images are formed on the image-forming member and transferred via the intermediate transfer member to a face of the receptor material. These subsequent transfers are executed in transfer contact zones where the respective image-carrying members contact each other. The respective image-carrying members are coupled and driven such that the losses created in the transfer contact zones are balanced over the respective drive device.
Claims14
An image reproduction system which includes a device for transferring developed images from an image-carrying member to one face of a receptor material, comprising:
- a transfer member capable of being coupled with, and decoupled from, both said image-carrying member and said receptor material, wherein said transfer member and said receptor material pass over respective guide rollers so positioned, in the coupled position of said transfer member with said receptor material, to form a transfer contact zone therebetween;
- a first drive device for tensioning said receptor material;
- and
- a second and a third drive device, both capable of speed and torque control, for driving said transfer member and said receptor material respectively such that the additional load created in said transfer contact zone is shared between said second and third drive device.
A method for controlling image distortion in the transfer contact zone between a first and a second moving image-carrying member, being part of an image reproduction system, the method comprising:
- driving said first image-carrying member with a first drive device, capable of speed and torque control;
- and
- driving said second image-carrying member with a second drive device, capable of speed and torque control, wherein said first drive device and said second drive device are coupled to different sides of the transfer contact zone such that the force exerted by the first moving image-carrying member on the second moving image-carrying member is countered by the force exerted by the second moving image-carrying member on the first moving image-carrying member.
Dependencies are inferred from the claim text.