Color image forming apparatus with reduced positional deviation
US5765083A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1997 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Feb 21, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0177
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A registration mark formed on an intermediate transfer belt is detected by a mark sensor, and a mark detecting signal is sent to a counter section from the mark sensor. The counter section starts to count a clock signal from an oscillator when the mark detecting signal is sent. A corrector section checks a corrected information which indicates a property of a number of printed surfaces registered in a corrected information register section and a detecting time difference, by the number of the printed surfaces sent from a mark detecting counter, and sends corrected time information corresponding to the number of the printed surfaces. The counter section sends a corrected signal to an engine controller section when a counted value of the clock signal reaches the corrected time information, and controls the time of starting image reading.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.