Simultaneous cleaning of residual toner and toner image formation
US5999763A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1998 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | May 21, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/1657
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an image forming apparatus which includes a movable image bearing member for bearing a toner image, a movable intermediate transfer member to which the toner image on the image bearing member is electrostatically transferred at a first transfer position, and a charger for charging residual toner remaining on the intermediate transfer member after the toner image on the intermediate transfer member has been electrostatically transferred onto a transfer material at a second transfer position with polarity opposite to charging polarity of the normal toner on the image bearing member. An electric field is formed so that the residual toner charged by the charger from the intermediate transfer member onto the image bearing member and a transfer of a next toner image from the image bearing member onto the intermediate transfer member are simultaneously performed at the first transfer position. Also included is a controller for controlling so that a relative position of a first toner image transferred to a first transfer material from the intermediate transfer member with respect to the intermediate transfer member and a relative position of a second toner im…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.