US 2010/0303513 A1 · IMAGE FORMING APPARATUS

Abstract

An image forming apparatus includes a rotatable belt member; a stretching roller for stretching the belt member; a plurality of line-like marks which are arranged in a rotational direction of the belt member and are formed stepwisely on a surface of the belt member; the marks being tilted from a rotational axis direction of the belt member at least at end portions thereof on sides close to an end surface of the belt member; and control means for controlling rotation of the belt member on the basis of a result of detection of the marks.

Claims5

Dependent claims

An image forming apparatus comprising:

a rotatable belt member;
a stretching roller for stretching said belt member;
a plurality of line-like marks which are arranged in a rotational direction of said belt member and are formed stepwisely on a surface of said belt member;
said marks being tilted from a rotational axis direction of said belt member at least at end portions thereof on sides close to an end surface of said belt member;
and
control means for controlling rotation of said belt member on the basis of a result of detection of said marks.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

12/780,369Filed 14 May 2010

Priority

JP 2009-12632026 May 2009

Published

2 Dec 2010

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G03G 15/161
Using at least one intermediate support: with means for handling the intermediate support, e.g. heating, cleaning, coating with a transfer agent
G03G 15/1605
Of a toner pattern, e.g. a powder pattern , e.g. magnetic transfer: using at least one intermediate support
G03G 2215/00139
Handling of parts of the apparatus: belt
G03G
Electrography

Image forming apparatus

Life of this patent

Image forming apparatus

Life of this patent

Abstract

Claims5