Imaging system
US4049447A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Feb 12, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08755
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A finely divided particulate toner composition is provided comprising a colorant and an amorphous, low-melting aromatic polyester wherein the polyester contains within the polymer chain at least about 30 mole percent of at least one divalent radical selected from the group consisting of: PA1 A. an asymmetrical arylene radical represented by the formula: ##STR1## wherein [Ar] is a divalent arylene radical containing from 6 to about 18 carbon atoms, R is selected from the group of radicals consisting of hydrogen, alkyl containing from 1 to about 4 carbon atoms, halo, sulfo and alkali metal salts thereof, nitro, cyano, lower alkoxy, amino, thio lower alkoxy and --N(R').sub.p wherein each R' can be independently hydrogen or lower alkyl and p is an integer of 2 or 3, each m is independently a number from 0 to 1 and n is a number from 0 to 3, and PA1 B. an asymmetrical alkylene radical represented by the structural formula: ##STR2## wherein R" is an alkyl radical containing from 1 to about 4 carbon atoms, each R'" is independently hydrogen or R", q is a number from 1 to about 10 and each r is independently a number from 0 to 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.