Start developer
US5223367A · kind A · utility
0Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | Jul 24, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A start developer is described which includes a toner and a carrier, present in a predetermined ratio. The carrier spent amount is adjusted so that it is not less than 0.010% in terms of the amount of carbon, as measured with a carbon analyzer. With this start developer, good quality images may be formed throughout the copying operation, from the initial image forming stage to the repeated image forming stage and through the stabilized image forming stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.