Image forming apparatus and layer thickness calculating method
US7426351B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2006 |
| Grant date | Sep 16, 2008 |
| Priority date | — |
| Expiry date | Mar 14, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/5037
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus, includes: an image carrier that carries a developer image by a charge layer provided on a surface of the image carrier; a charger that charges the image carrier; a feeder that feeds the charger with a charge; a total charge amount detector that detects the total amount of the charge output by the feeder; an unsupplied charge amount calculator that calculates the amount of the charge output by the feeder but not supplied to the charger; and a layer thickness calculator that calculates the thickness of the charge layer based on the unsupplied charge amount calculated by the unsupplied charge amount calculator and the total charge amount detected by the total charge amount detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.