Image forming apparatus
US4990956A · kind A · utility
7Cited by
3References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1989 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Apr 5, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0451
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus comprises a main charger for charging the surface of a photosensitive drum, an exposure unit for illuminating an original and guiding light from the original onto the drum, thereby forming thereon an electrostatic latent image corresponding to an image of the original, a detector for detecting the size of the original, and an erase array for erasing an undesired electric charge on the photosensitive drum in accordance with the original size detected by the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.