Toner evaluation method, toner cartridge, and image forming apparatus
US7246528B2 · kind B2 · utility
0Cited by
8References
13Claims
0Family size
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Key dates
| Filing date | Mar 25, 2005 |
| Grant date | Jul 24, 2007 |
| Priority date | — |
| Expiry date | Mar 25, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner evaluation method that enables accurate evaluation of fixation performance of toner such as low temperature fixability and offset resistance, and a toner cartridge and an image forming apparatus adopting the toner positively evaluated by the evaluation method are provided. Toner is formed into a disc-shaped pellet. After preserved at a predetermined temperature, the pellet is compressed by a predetermined amount at a constant speed. If the maximum load (compression resistance) measured during the compression is a predetermined value or below, the minimum fixing temperature of the toner is relatively low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.