Method and apparatus for determining toner development rate
US5285243A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1992 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Jun 12, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0848
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method and apparatus for determining the rate of development characteristic of electroscopic toner particles of the type used in electrostatographic recording to develop electrostatic images. The apparatus has a biased electrode for attracting toner particles and a microprocessor-based logic and control unit for sampling the mass of toner particles attracted to the electrode at preselected times during the accumulation of toner on the biased electrode. This development rate parameter is used by the logic and control unit to control process parameters (e.g. primary charging and exposure levels, development electrode bias, toner concentration) which affect image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.