Method and apparatus for preventing erroneous image density detection in an image forming apparatus
US5146273A · kind A · utility
11Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 14, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | May 14, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A humidity sensor detects a relative humidity which is one of the conditions of surroundings. CPU judges a defective detection and stops an objective image forming operation when density is decreased despite an increase in humidity or when density is increased despite a decrease in humidity basing on an image density information related to AIDC pattern supplied from AIDC sensor and basing on a humidity information supplied from the humidity sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.