Toner for development of electrostatic image
US5385799A · kind A · utility
6Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Jan 31, 1995 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/09775
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner for development of electrostatic images containing one or more compounds of formulae (I) and (II): ##STR1## where A and R each represent an aromatic ring residue, and the hydroxyl group and the amido group in the formula are bonded to the aromatic ring A at the adjacent positions, ##STR2## where A.sup.1, A.sup.2, R.sup.1 and R.sup.2 each represent an aromatic ring residue, and the hydroxyl group and the amido group in the formula are bonded to the aromatic ring A.sup.1 or A.sup.2 at the adjacent positions; and n represents an integer. The toner is highly safe and has sufficient charge properties and charge stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.