Yellow toner, process for producing the tower and image forming method using the toner
US6187495A · kind A · utility
12Cited by
12References
71Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Aug 31, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0912
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A yellow toner suitable for electrophotography is formed by dispersing a yellow colorant mixture in a binder resin. The yellow colorant mixture is formed of at least a pigment of formula (1) or (2) below, and a dye of formula (3) below: ##STR1## wherein R.sub.1 and R.sub.2 independently denote a hydrogen atom, a chlorine atom or --CH.sub.3, and R.sub.3 denotes ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently denote a hydrogen atom, --COOH, --COOCH.sub.3, --CF.sub.3, --CONH(C.sub.6 H.sub.4)CONH.sub.2, or ##STR3##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.