Titanyl phthalocyanine crystal and production method of the...

Details Titanyl phthalocyanine crystal and production method of the... Titanyl phthalocyanine crystal and production method of the...

2006-06-06

2006-06-06

Wilson, James O. (Department: 1623)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C540S136000, C540S137000, C540S140000

Reexamination Certificate

active

07057034

ABSTRACT:
The present invention relates to a novel titanyl phthalocyanine crystal which can prepare a coating solution having excellent storage stability because it satisfies both of the following two characteristics (a) and (b), a method of producing the same, an electrophotosensitive material using the above crystal as an electric charge generating material.(a) The crystal has a maximum peak at a Bragg angle 2θ±0.2°=27.2° and has no peak at 7.4° in a CuKα characteristic X-ray diffraction spectrum.(b) The crystal does not have a peak of a change in temperature within a range from 50 to 400° C. except for a peak associated with evaporation of adsorbed water in differential scanning calorimetry.

REFERENCES:
patent: 6528645 (2003-03-01), Hamasaki et al.
patent: 09-316354 (1997-12-01), None
patent: 2001-181531 (2001-07-01), None

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