Apparatus for forming multiple toner images in register with each other on a substrate
US6137981A · kind A · utility
7Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Jun 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0194
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The apparatus includes an endless belt, an imaging station, a number of developing stations, and a number of transfer stations. A controllable belt drive drives the endless belt along a path through the imaging station, the developing stations and the transfer stations. A preformed timing mark is carried on the belt and a sensor is provided for sensing the passage of the timing mark past a sensing position. A control device controls the belt drive to run at a constant speed and controls the speed of the belt in response to the sensing of the timing mark. The maintenance of a constant belt speed can be more reliably assured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.