Hydroxyaluminumphthalocyanine having reduced green absorption
US4578330A · kind A · utility
2Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Nov 16, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An hydroxyaluminumphthalocyanine colorant compound with reduced green absorption having peak absorption bathochromically shifted to 621 nm is disclosed. In a preferred embodiment, hydroxyaluminumphthalocyanine of the invention exhibits reduced absorption on both sides of the 621-nm peak as determined by the peak width at half maximum intensity. Hydroxyaluminumphthalocyanine is useful as an electrically photosensitive component in photoelectrophoretic imaging processes, as well as in electrographic developers as a toner constituent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.