Multi-color electrophotograph apparatus
US5008691A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 15, 1989 |
| Grant date | Apr 16, 1991 |
| Priority date | — |
| Expiry date | Sep 15, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/525
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a multi-color LBP (laser beam printer) or a full-color LBP, two image producing elements each composed of charge-exposure-develop devices are arranged around one drum, and each of the image producing elements includes a developer capable of color changing for achieving a color change developing in every one revolution. In this way, it is made possible to practice a multicolor printing or a full-color printing in two rotations of one photosensitive drum. This printer has a higher printing speed and a smaller size of the apparatus in comparison with that of a one drum four rotation system and that of a one drum one rotation system, respectively. Further, the system includes several features common to two-color LBP printing art, making it possible to conveniently utilize the latter printing art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.