Cleaning method for contact charging means in image forming apparatus
US5541717A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1995 |
| Grant date | Jul 30, 1996 |
| Priority date | — |
| Expiry date | Nov 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/0005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A cleaning method for a contact type charger in an cleanerless image forming apparatus. The method includes a step of switching bias voltages applied to the contact type charger and a develop/cleaning device from first level to a second level so as to release developer adhering to the contact type charger onto an image-bearing member as well as to collect a part of the developer moved onto the image-bearing member by the developing/cleaning device, and a step of switching the bias voltage from the second level to the first level so as to collect the rest of the developer released onto the image-bearing member by the develop/cleaning device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.