Phthalocyaninkristall, Verfahren zu seiner Herstellung und seine Verwendung als photoempfindlicher Werkstoff.

摘要

A new crystal form of a titanyl phthalocyanine compound is provided. This crystal form shows characteristic strong absorption peaks at 1,332 +/- 2 cm<-><1>, 1,074 +/- 2cm<-><1>, 962 +/- 2cm<-><1> and 783 +/- 2 cm<-><1> in an infrared absorption spectrum and/or characteristic strong peaks at 27.2 DEG , 9.7 DEG and 24.1 DEG of Bragg's angle 2 theta in an X-ray diffraction spectrum and has very good dispersibility and stability in a solvent and also very good photoelectric conversion efficiency and so is very useful particularly as a charge generation agent highly sensitive in a semiconductor laser wavelength region as required in a photosensitive material for a highspeed high-definition printer. Such crystal form can be obtained by treating non-crystalline titanyl phthalocyanine with tetrahydrofuran.