G - Physics – 03 – G
Patent
G - Physics
03
G
96/174, 96/210,
G03G 5/00 (2006.01) G03G 5/06 (2006.01)
Patent
CA 1048329
ABSTRACT Process for direct alpha to X phase conversion of metal-free phthalocyanine. In this process, the alpha polymorph of a metal-free phthalocyanine pigment can be directly converted to the X form by depositing the alpha form of the pigment on a suitable substrate followed by in situ conversion of this deposit by controlled heating. The X form of metal-free phthalocyanine is known to possess good electrophotographic speed, and, thus, can be used either along or in combination with other photocon- ductive material in electrophotography.
194542
Griffiths Clifford H.
Walker Michael S.
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