Toner mass developed control ratio modification system
US4951088A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1988 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Dec 13, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00042
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner mass developed control system for use with electronic printers or copiers provides for the measurement of toned photoconductor reflectivity and bare photoconductor reflectivity. The standard control ratio is modified by characterizing the particular sensor unit in use and by taking into account the reflectance from both photoconductor and toner in the toned patch reflectivity measurement. These factors together with a modification for photoconductor reflectance degradation enable accurate control in high optical density development and with highly reflective color toners by altering the control ratio in accordance with these factors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.