A new crystal form of a titanyl phthalocyanine compound is provided. This crystal form shows characteristic strong absorption peaks at 1,332.+-.2 cm.sup.-1, 1,074.+-.2 cm.sup.-1, 962.+-.2 cm.sup.-1 and 783.+-.2 cm.sup.-1 in an infrared absorption spectrum and/or characteristic strong peaks at 27.2.degree.,...http://www.google.com.au/patents/US5008173?utm_source=gb-gplus-sharePatent US5008173 - Phthalocyanine crystal, process for manufacture thereof and its use for electrophotographic photosensitive material
