Image forming apparatus with automatic voltage control
US5602628A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1996 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Mar 1, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The surface of a rotating photoreceptor is charged by main chargers and an electrostatic latent image is formed on the charged surface of the photoreceptor by use of an optical system. The electrostatic latent image is developed into a toner image with toner. The toner image is transferred to a copy sheet at a transfer section and an automatic voltage control is performed to regulate the output voltage of the main chargers so that the surface of the photoreceptor is charged to a predetermined charge when a power switch is turned on. A control unit is provided which performs the automatic voltage control also when the output of an ejection sensing switch representative of the number of image formations is greater than or equal to a predetermined value and the output of a development thermistor is higher than or equal to a predetermined temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.