Toner for developing electrostatic image and process for production thereof
US5510222A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 1994 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | May 17, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/081
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner for developing an electrostatic latent image is constituted by a binder resin, a colorant, and an ester compound (a), (b) or (c) shown below: (a) a poly-functional ester having a tertiary carbon or/and a quaternary carbon and obtained from an alcohol compound or carboxylic compound having at least two functional groups, (b) a mono-functional ester having a tertiary carbon or/and a quaternary carbon, or (c) a poly-functional ester of a specific structure having a primary or secondary carbon having at least two functional groups. The ester compound is characterized by a good affinity with the binder resin, a high hydrophobicity and a low crystallinity, thereby providing a toner which shows good low-temperature fixability, anti-offset characteristic, color-mixing characteristic and transparency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.