Developer containing two kinds of wax
US5660964A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08797
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A monocomponent developer comprising a binder resin, a colorant and first and second offset preventing agents, wherein a softening point of said binder resin (Tm.sub.1), that of said first offset preventing agent (Tm.sub.2) and that of said second offset preventing agent (Tm.sub.3) satisfies relationship; EQU Tm.sub.2 <Tm.sub.1 .ltoreq.Tm.sub.3 a heat quantity change of said first offset preventing agent (.DELTA.H.sub.2) and that of the second offset preventing agent (.DELTA.H.sub.3) satisfies relationship; EQU 0.20 (mJ/mg).ltoreq..DELTA.H.sub.2 -.DELTA.H.sub.3 .ltoreq.1.50 (mJ/mg) A toner comprising a binder resin comprising (a) polyester resin made of etherified diphenol and dicarboxylic acid, and having an acid value of 15 to 50, (b) a colorant, (c) a first offset preventing agent having a softening point of 60.degree. to 110.degree. C. and an acid value of 3 to 45; and (d) a second offset preventing agent having a softening point of 110.degree. to 150.degree. C. and an acid value of 1 to 30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.