Recording apparatus
US4837600A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1987 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Oct 8, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A recording apparatus having a photosensitive body, a charger for charging the photosensitive body, an exposure unit for forming a latent image on the photosensitive body charged by the charger, and a developing unit for developing the latent image into a visible image on the photosensitive body. The recording apparatus also includes a first surface potential sensor for measuring the surface potential of the photosensitive body before the latent image has been developed by the developing unit, a second surface potential sensor for measuring the surface potential of the photosensitive body after the latent image has been developed by the developing unit, a computer for computing the surface potential of the photosensitive body at a position between the first and second surface potential sensors to estimate the surface potential at the position of the developing unit, and a controller for controlling the charger so that the estimated surface potential becomes a determined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.