Image forming apparatus having inference means and method of manufacturing the same
US5321468A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1993 |
| Grant date | Jun 14, 1994 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S706/90
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an image forming apparatus of the present invention, the adhesion amounts of developing agent on a high-density test pattern and a low-density test pattern are measured by a toner density measuring unit. On the basis of the measured adhesion amounts of developing agent on the high-density region and low-density region and the target values of the adhesion amounts, deviations of the adhesion amounts of the high-density region and the low density region are calculated. The renewal amount of contrast voltage and the renewal amount of background voltage corresponding to the high-density region deviation and low-density region deviation are inferred by an inference unit on the basis of inference data stored in a memory unit. The grid bias value and development bias value corresponding to the inferred renewal amounts of contrast voltage and background voltage are calculated. The grid bias voltage and development bias voltage are varied in accordance with the calculated grid bias value and development bias value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.