Toner containing azo iron compound
US6426169B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2000 |
| Grant date | Jul 30, 2002 |
| Priority date | — |
| Expiry date | Oct 30, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner having a stable chargeability in various environments, a stable fixability over a wide temperature range and a resistance to sticking on an image-bearing member, is formed of a binder resin, a colorant and an azo iron compound as a charge control agent. The azo iron compound is formed from a monoazo compound having at least one alkyl group and two hydroxyl groups capable of bonding with an iron atom. The toner has a tetrahydrofuran-soluble content providing a gel-permeation chromatogram showing at least one peak in a molecular weight region of 3×103 to 5×104 and at least one peak or shoulder in a molecular weight region of above 5×104 and at most 1×107.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.