Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper
US6144811A · kind A · utility
35Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Feb 2, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00721
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A image forming apparatus with a sensing control system having an optical sensor and a control device. An detected object is recognized by using the difference of an output characteristics correspond to a quantity of reflected light. Thus, one or more detected objects may be precisely detected by the one optical sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.