Image forming apparatus with bias control to prevent undesirable toner deposition
US5768665A · kind A · utility
35Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Feb 8, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an image forming apparatus using a corona discharge type charging device and a contact type image transferring device, a toner deposited on a photoconductive element in the form of a black stripe is prevented from being transferred to the image transferring device; otherwise, the toner would be transferred from the image transferring device to the rear of the following recording medium. Because the toner forming the black stripe is limited to the toner charged to a polarity opposite to an expected polarity, toner consumption ascribable to the stripe is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.