Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2004-10-07
2010-10-12
Wilson, James O. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C430S078000
Reexamination Certificate
active
07812154
ABSTRACT:
Disclosed herein are a method and an apparatus for preparing oxytitanium phthalocyanine as a charge generating material. The method comprises the steps of homogeneously mixing an oxytitanium phthalocyanine crude with an organic solvent while microwave energy having a frequency of 0.1˜100 GHz and a power of 10˜3,000 W and ultrasonic wave energy having a frequency of 1˜1,000 kHz and a power of 10˜5,000 W are applied thereto, and reacting the mixture at 30˜100° C. for 0.5˜5 hours. The apparatus comprises: a magnetron1capable of generating a frequency of 0.1˜100 GHz and a power of 100˜3,000 W; a mode stirrer3for making the wavelength of microwaves uniform in a microwave container2; a PID type temperature controller9for accurately measurement and controlling the temperature of reactants; a K-type thermocouple shielded from microwaves4; a condenser5; an agitator6, the thermocouple4, the condenser5and the agitator6being inserted into three openings formed at a top of the microwave container2; an ultrasonic tip7inserted into an opening formed at a bottom of the microwave container2; a Pyrex container9into which the reactants are introduced; and a solvent tank10. According to the method and the apparatus, an oxytitanium phthalocyanine charge generating material having superior thermal stability and crystal stability can be prepared in an efficient manner.
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Yao, Jiachang et al., “A Convenient Synthetic Method for Pure Oxo (phthalocyaninato) titanium (IV) and Application to Other Metal Phthalocyanines” Bull. Chem. Soc. Jpn., vol. 68, No. 3, pp. 1001-1005, 1995.
U.S. Appl. No. 10/556,785, filed Nov. 14, 2005, Kwon, et al.
Jung Hyun Suk
Jung Ki Suck
Ko Jin Phil
Kwon Jong Ho
Park Seong Soo
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Phthalos Co., Ltd
Ward Paul V.
Wilson James O.
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