Image forming apparatus having an optical sensor for converting a toner adhesion amount and image forming method
US9565319B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2015 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Oct 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image forming apparatus includes an image bearer to bear a black toner pattern formed with a black toner image under an increased exposure amount and an increased developing bias. A first optical sensor detects an amount of reflection light reflected by the black toner pattern on the image bearer. The first optical sensor includes a light-emitting element to emit light toward the black toner pattern on the image bearer and a light-receiving element to receive the reflection light reflected by the black toner pattern on the image bearer. A toner adhesion amount converter converts the amount of the reflection light detected by the first optical sensor into a toner adhesion amount of toner adhered to the image bearer and adjusts an image density according to the toner adhesion amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.