Titanyl phthalocyanine, method for production thereof and electrophotographic photoreceptor containing the same
US6284420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2000 |
| Grant date | Sep 4, 2001 |
| Priority date | — |
| Expiry date | Jan 26, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0696
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A peroxide-modified titanyl phthalocyanine for use in preparing charge generating layer of a photoreceptor is disclosed. The peroxide-modified titanyl phthalocyanine is obtained by subjecting titanyl phthalocyanine to a peroxide-induced complexation-mediated crystal transformation at a low temperature. The peroxide-modified titanyl phthalocyanine is characterized by having Bragg diffraction angles of 7.3, 9.4, 14.0, 24.1, 25.7, 27.2 and 28.5 degrees, and vibrational absorption resonances at 1486 cm (superscript: -1), 1420 cm (superscript: -1), 1134 cm (superscript: -1), 1078 cm (superscript: -1), 966 cm (superscript: -1), 900 cm (superscript: -1), 762 cm (superscript: -1) and 736 cm (superscript: -1). The photoreceptor exhibits excellent photosensitivity at wavelengths in the near-infrared range and has a unique crystal form, especially the peroxide-modified titanyl phthalocyanine shows a higher distinct absorption peak at the wavelength of 780 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.