Electrophotographic copying apparatus
US4475805A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1982 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Dec 28, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic copying apparatus includes a photosensitive member in the form of an endless belt having images of the document formed on its surface in a predetermined position by exposure to an optical image of the document while travelling. The photosensitive member has a peripheral length which includes a reserve when the photosensitive member is trained over a group of rollers without loosening, and is divided into a first section including a predetermined exposing position, a third section and a fourth section connected at one end thereof to opposite ends of the first section and accommodating the reserve in length by loosening the belt, and a second section connected to opposite ends to the other end of the third and fourth sections. At least one copying processing means other than a scanning and exposing means is located in the vicinity of the second section. The movement of the photosensitive member is controlled in such a manner that it is alternately moved in the first section at a high constant speed when scanning and exposing are carried out at a low constant speed or stopped when the scanning and exposing means is restored to its original position, and it is co…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.