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 magnetron 1 capable of generating a frequency of 0.
Type:
Grant
Filed:
October 7, 2004
Date of Patent:
October 12, 2010
Assignee:
Phthalos Co., Ltd
Inventors:
Jong Ho Kwon, Ki Suck Jung, Woo Ho Son, Seong Soo Park, Jin Phil Ko, Hyun Suk Jung
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 magnetron 1 capable of generating a frequency of 0.
Type:
Application
Filed:
October 7, 2004
Publication date:
May 31, 2007
Applicant:
PHTHALOS CO., LTD.
Inventors:
Jong Ho Kwon, Ki Jung, Woo Son, Seong Park, Jin Ko, Hyun Jung
Abstract: Disclosed herein is a method for preparing oxytitanium phthalocyanine as a charge generating material. The method comprises the steps of mixing 30-100 wt % sulfuric acid and an oxytitanium phthalocyanine crude in a mixing ratio between 100:1 and 1:1, homogeneously grinding the mixture in a wet grinder filled with zirconia or glass beads as grinding media at ?20° C.˜60° C. for 0.1˜24 hours, and removing the grinding media from the ground mixture using a solvent. According to the method, oxytitanium phthalocyanine usable as a high-quality charge generating material can be prepared without the use of expensive and difficult-to-handle reactants, such as trifluoroacetic acid and pentafluoropropionic acid. Further disclosed is an oxytitanium phthalocyanine charge generating material prepared by the method.
Type:
Application
Filed:
October 7, 2004
Publication date:
May 17, 2007
Applicant:
PHTHALOS CO., LTD
Inventors:
Ki Jung, Jong Kwon, Seong Park, Jun Shin, Woo Son, Seung Song