Oxytitanium phthalocyanine imaging members and processes thereof

A process for the preparation of Type IV oxytitanium phthalocyanine consisting essentially of adding dissimilar amounts of Type I titanyl phthalocyanine and Type II titanyl phthalocyanine to a solvent mixture of trifluoroacetic acid and an alkylene halide wherein alkylene contains from 1 to about 15 carbon atoms;

• adding the resulting solution to a mixture which enables precipitation of Type X oxytitanium phthalocyanine, which mixture is comprised of water and an aliphatic alcohol and wherein said aliphatic contains from 1 to about 12 carbon atoms;
• separating the Type X oxytitanium phthalocyanine from the solution;
• and forming a slurry of the Type X oxytitanium phthalocyanine with a halobenzene.

A process for the preparation of titanyl Type IV oxytitanium phthalocyanine consisting of (1) dissolving a Type I and Type II oxytitanium phthalocyanine mixture, or the Type II alone, in a solvent comprised of trifluoroacetic acid and methylene chloride in a ratio of about 1 part of acid to about 1 to 20 parts of methylene chloride, and stirring the solution for an effective period of time of from about 1 minute to about 2 hours;

• (2) pouring or adding the resultant solution into a rapidly stirred precipitant mixture comprised of methanol and water in a ratio of from about 65 percent of methanol and 35 percent of water to about 35 percent of methanol and 65 percent of water, which precipitant mixture is selected in a ratio of from about 1 part of the solution of 1 to 2 parts of precipitant to about 1 part of the solution of 1 to 50 parts of precipitant at a temperature of from about -5.degree. to about 5.degree. C. over a period of from 1 minute to about 2 hours to ensure rapid efficient mixing;
• (3) isolating the Type X oxytitanium phthalocyanine obtained;
• (4) slurrying the Type X polymorph in chlorobenzene for an effective period of time of from 1 minute to 2 hours to enable complete conversion to Type IV oxytitanium phthalocyanine.