Toner evaluation method, toner cartridge, and image forming...

Details Toner evaluation method, toner cartridge, and image forming... Toner evaluation method, toner cartridge, and image forming...

2007-07-24

2007-07-24

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

C073S819000, C073S821000

Reexamination Certificate

active

11089358

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.

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