Method of controlling print registration in an electrophotographic machine
US6252618A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2000 |
| Grant date | Jun 26, 2001 |
| Priority date | — |
| Expiry date | Jun 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0119
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of aligning print images of an electrophotographic machine on a print medium includes providing a plurality of rotating photoconductive drums in the electrophotographic machine. Each of a plurality of laser beams is reflected off of a respective one of a plurality of reflectors. Each reflector rotates relative to the respective laser beam to thereby scan the laser beam across a respective one of the photoconductive drums to produce a scan line in a scan direction. The relative rotation between the laser beams and the respective reflectors is cyclically repeated to thereby produce a plurality of substantially parallel scan lines on each photoconductive drum. Each scan line is displaced from an adjacent scan line by a scan line separation distance in a process direction perpendicular to the scan direction. Toner is applied to each scan line on the photoconductive drums. A moving toner transfer medium contacts each photoconductive drum at a respective toner transfer nip. A first toner transfer nip is associated with a first reflector. A second toner transfer nip is associated with a second reflector. A length of the toner transfer medium between at least the first toner trans…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.