Image formation apparatus, toner amount measurement apparatus, and toner amount measurement method
US6477338B2 · kind B2 · utility
7Cited by
1References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jun 20, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00054
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light is applied by a laser diode 121 onto a photosensitive roll 110 formed with a developed toner image 161, the surface potential of the photosensitive roll 110 to which the light is applied is measured with a surface potential sensor 122, and the toner amount of the developed toner image 161 on the photosensitive roll 110 is derived based on the measured surface potential.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.