05874570 is referenced by 8 patents and cites 28 patents.

A titanyloxyphthalocyanine crystal to be used as a charge generation material for an electrophotographic photoreceptor, having a maximum diffraction intensity observed at Bragg angle (2 .theta.) of 9.6.degree..+-.0.2.degree. and clear peaks of diffraction intensity observed at 7.22.degree..+-.0.2.degree., 9.60.degree..+-.0.2.degree., 11.60.degree..+-.0.2.degree., 13.40.degree..+-.0.2.degree., 14.88.degree..+-.0.2.degree.,18.34.degree..+-.0.2.degree., 23.62.degree..+-.0.2.degree., 24.14.degree..+-.0.2.degree., and 27.32.degree..+-.0.2.degree., respectively, in an X-ray diffraction spectrum obtained by performing an x-ray diffraction method using CuK.alpha. as a source of radiation. A method for preparing the crystal includes dispersing a predetermined amount of amorphous titanyloxyphthalocyanine in an aqueous solution in which ionic substances are dissolved, under mechanical force at a temperature of under 50.degree. C., to obtain a mixture composed of a fine dispersion of titanyloxyphthalocyanine; adding a non-aqueous organic solvent to the mixture to shift the fine dispersion of titanyloxyphthalocyanine from an aqueous phase to a non-aqueous organic solvent phase; and removing the non-aqueous organic solvent phase to obtain a pellet of titanyloxyphthalocyanine crystal.

Title
Titanyloxyphthalocyanine crystals, and method of preparing the same
Application Number
645322
Publication Number
5874570
Application Date
January 26, 1998
Publication Date
February 23, 1999
Inventor
Kenichi Ohkura
Kawasaki
JP
Kazumi Egota
Kawasaki
JP
Naoki Itoh
Kawasaki
JP
Youichi Tei
Kawasaki
JP
Shinichi Tamura
Kawasaki
JP
Agent
Spencer & Frank
Assignee
Fuji Electric
JP
IPC
G03G 5/047
C09B 67/50
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