Printer autocontrast control
US5003327A · kind A · utility
19Cited by
13References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Nov 15, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/321
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A printer autocontrast system measures the current passing from a toner reservoir to a charged dielectric member which receives toner from the reservoir. The charge delivered to the drum in this way is scaled and compared to an estimate of the intended image charge to develop an error signal. The error signal corrects a control parameter to adjust the operation of an electrographic printhead which forms a latent image on the dielectric member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.