Toner for developing electrostatic latent images, production method thereof, and electrostatic latent image developer using the same
US7267920B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Oct 1, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09725
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a toner for developing an electrostatic latent image comprising of: toner particles containing at least a binder resin, a colorant and a releasing agent; wherein a volume-average particle diameter of the toner particles is in a range of about 5 to 8 μm; an average of shape factor SF1 of the toner particles is in a range of about 125 to 140; and an arithmetical mean undulation height of the surface of the toner particles at the 90% point on the cumulative distribution curve is in a range of about 0.15 to 0.25 μm. Further, the present invention provides an electrostatic latent image developer containing the toner. The invention also provides a method for producing the toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.