Image forming apparatus provided with surface potential control device
US4355885A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1980 |
| Grant date | Oct 26, 1982 |
| Priority date | — |
| Expiry date | May 20, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Image forming apparatus having a surface potential control device incorporated therein, in which magnitude of a measured value of the surface potential sensor and an aimed potential value is discriminated, and an output from an output device such as an exposure device that affects the image formation is increased or decreased for a predetermined value by the discriminated output, and in which the measuring, discriminating, adding and subtracting operations are repeated to control the surface potential within a predetermined range in a definite number of times for the measurement by decreasing the adding and subtracting quantities with increase in the number of times for the repeated operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.