Electrophotographic-process control apparatus having improved output-image-density control function
US5504557A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 8, 1993 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Oct 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00054
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrified portion electric-potential, exposed portion electric-potential, and developing biasing electric-potential are controlled so as to obtain a constant ratio between an input level in exposure to generate the electrostatic latent image and the density associated with the toner-made image resulting from the developing for said electrostatic latent image. A target electric-potential determination table obtains therefrom respective target values for the electrified portion electric-potential, exposed portion electric-potential, and developing biasing electric-potential, wherein the target values obtained may vary depending on variation in the relevant characteristics due to ambience and/or aging of the developing system. A control-input determination unit determines control-input for controlling the electrified portion electric-potential, exposed portion electric-potential and developing biasing electric-potential so that these potentials equal their respective target values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.