Toner for developing an electrostatic image and a production method thereof, and an image forming method
US6248494A · kind A · utility
17Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Nov 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner for developing an electrostatic image is disclosed. The toner comprises colored particles containing a resin and a colorant, the volume average particle diameter of said colored particles is 3 to 9 .mu.m, the shape coefficient of said colored particles, which is described by the formula below, is 1.3 to 2.2, and the ratio of toner particles having a shape coefficient of 1.5 to 2.0 is at least 80 percent by number. EQU Shape coefficient=[(maximum diameter/2).sup.2.times..pi.]/(projection area) A developer and image forming method employing the toner are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.