US 2006/0216056 A1 · Image-forming device and belt unit

Abstract

A color laser printer includes a plurality of photosensitive drums and a paper-conveying belt disposed in confrontation with the photosensitive drums. The paper-conveying belt conveys a sheet of paper as the photosensitive drums sequentially transfer toner images thereon. This printer also includes a tension-adjusting mechanism capable of adjusting the tension state produced in the paper-conveying belt, and a controller for controlling the tension-adjusting mechanism. Through the control of the controller, the tension-adjusting mechanism is capable of adjusting the tension state of the paper-conveying belt between a first tension state used for transferring toner images from the photosensitive drum, and a second tension state producing a tension greater than that produced by the first tension state for performing a cleaning operation.

Claims13

Dependent claims

An image-forming device comprising:

an image-carrying member that carries a developer image;
a plurality of support members;
an endless belt disposed in confrontation with the image-carrying member and supported on the plurality of support members to circularly move therearound;
a transferring member that transfers the developer image in a direction from the image-carrying member to the endless belt;
a tension-adjusting mechanism that adjusts a tension generated in the endless belt between a first tension at which the developer image is transferred in the direction from the image-carrying member to the endless belt and a second tension greater than the first tension.

2 more elements

Dependencies are inferred from the claim text.

Image-forming device and belt unit

Life of this patent

Image-forming device and belt unit

Life of this patent

Abstract

Claims13