26201-32-1Relevant articles and documents
The metal phthalocyanine compound crystal and its manufacturing method, using the electrophotographic photosensitive member, method, Image forming device, and Image forming apparatus and process cartridge for
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Paragraph 0233, (2017/12/27)
PROBLEM TO BE SOLVED: To provide a novel metal phthalocyanine mixture crystal useful as an organic photoconductor used in an electrophotographic photoreceptor which is excellent in sensitivity from the visible to the near-infrared region, charging stability in repeated fatigue and stability to variation of temperature and humidity.SOLUTION: A metal phthalocyanine mixture crystal is formed by a crystal conversion treatment of a metal phthalocyanine mixture consisting of a titanyl phthalocyanine obtained by reacting phthalonitrile, a titanium compound and a halide of a metal other than titanium and a metal phthalocyanine of formula (1), where M is a metal atom other than titanium; Q is a bond group selected from a hydroxy group, an oxygen atom and a halogen atom; and n is an integer of 0-2.
MANUFACTURING METHOD OF PHTHALOCYANINE CRYSTAL AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR
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Paragraph 0079; 0080, (2018/03/06)
PROBLEM TO BE SOLVED: To provide a manufacturing method of a phthalocyanine crystal having improved level of ghost at use initiation and after repeated use and suppressed variation. SOLUTION: There is provided a manufacturing method for obtaining a phthalocyanine crystal by mixing a phthalocyanine compound obtained by acid pasting and an organic compound and conducting crystal transformation, having a process for conducting the crystal transformation by using a dispersion machine having a rotatable rotor and a jacket covering the rotor, and a structure in which at least the rotor has a flow passage of a coolant or a catalyst inside, gap sandwiched by the rotor and an inside wall of the jacket has a part forming an annular space, the rotor and the inner wall of the jacket forming the gap have smooth surfaces respectively and a mixture of the phthalocyanine compound and the organic compound flow between gaps to which media particles are filled. SELECTED DRAWING: None COPYRIGHT: (C)2018,JPOandINPIT
Electrophotographic photoreceptor, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridge for electrophotographic image forming apparatus
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Page/Page column 56; 57, (2014/09/03)
An N-phenyl-diphenylisoindole derivative having the following formula (1): wherein each of R1 and R2 represents a hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, a substituted or an unsubstituted phenyl group, or a substituted or an unsubstituted phenoxy group; R3 represents a hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, a substituted or an unsubstituted phenyl group, a substituted or an unsubstituted phenoxy group, or has the following formula (2): wherein each of R4 and R5 represents a substituted or an unsubstituted alkyl group, or a substituted or an unsubstituted phenyl group; 1 represents an integer of from 1 to 4; and each of m and n represents an integer of from 1 to 5.
Titanyl phthalocyanine with improved milling properties
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Page/Page column 10-11, (2012/07/13)
The invention is directed to mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine and the synthesis of mixtures of PcTiO and a minor amount of another, substituted titanyl phthalocyanine. The invention is further directed towards milled pigment compositions of such mixtures, and to use of such milled pigment compositions in an electrophotographic element.
TITANYL PHTHALOCYANINE PROCESSES AND PHOTOCONDUCTORS THEREOF
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Page/Page column 12-13, (2009/01/24)
A process which includes treating, mixing, or contacting a Type I titanyl phthalocyanine with a weak acid with a pKa of at least equal to or greater than about 0; dissolving the acid treated Type I titanyl phthalocyanine in a solution of a trihaloacetic acid and an alkylene halide; adding the formed mixture to a solution of an alcohol and an alkylene halide thereby precipitating a Type Y titanyl phthalocyanine; and treating the Type Y titanyl phthalocyanine with monohalobenzene thereby resulting in a high sensitivity titanyl phthalocyanine.
Method for producing alpha-form titanylphthalocyanine and electrophotographic photoreceptor comprising alpha-form titanylphthalocyanine
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Page/Page column 7, (2009/03/07)
The present invention relates to a method for producing an α-form titanylphthalocyanine represented by the formula (1): which has a peak at a Bragg angle (2θ ± 0.2°) in X-ray diffraction spectrum with CuK α-ray: 7.5°, 10.2°, 12.6°, 13.2°, 15.1°, 16.3°, 17.3°, 18.3°, 22.5°, 24.2°, 25.3° and 28.6°, wherein the method includes steps of: (I) subjecting a crude titanylphthalocyanine having an α-form polymorph to an acid pasting treatment, and then filtering and washing with water to give a water-containing wet cake, and then subjecting the wet cake to drying and crushing to give a low crystalline titanylphthalocyanine; (II) adding a dispersing aid to the low crystalline titanylphthalocyanine and dispersing at room temperature, in DMF, to prepare a polymorph; and (III) filtering, washing, and drying under a reduced pressure. The present invention consists in a provision of a method for conveniently producing the α-form titanylphthalocyanine having a peak at a Bragg angle (2θ ± 0.2°) in X-ray diffraction spectrum with CuK α-ray: 7. 5°, 10. 2°, 12. 6°, 13.2°, 15.1°, 16.3°, 17.3°, 18.3°, 22.5°, 24.2°, 25.3° and 28.6°, wherein a crude titanylphthalocyanine having an α-form polymorph is used as a starting material, as well as a provision of an electrophotographic photoreceptor comprising a charge generating material of the α-form titanylphthalocyanine which has excellent photosensitive characteristics.
Oxo-titanylphthalocyanine crystal, method for producing the same, and electrographic photoreceptor
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Page/Page column 9; 21; 23; 24, (2008/06/13)
The invention provides an oxo-titanylphthalocyanine crystal which is stable, is superior in dispersibility in a photoreceptive layer and efficiently contributes to improvements in sensitivity and charge retention rate of an electrophotographic photoreceptor when it is used as a charge generating agent, a method for producing the oxo-titanylphthalocyanine crystal, and an electrophotographic photoreceptor. The oxo-titanylphthalocyanine crystal has predetermined optical characteristics and thermal properties and is produced by a production method including the following steps (a) to (d): (a) a step of dissolving a crude oxo-titanylphthalocyanine crystal in an acid to obtain an oxo-titanylphthalocyanine solution; (b) a step of adding the oxo-titanylphthalocyanine solution dropwise in a poor solvent to obtain a wet cake; (c) a step of washing the wet cake with an alcohol having 1 to 4 carbon atoms; and (d) a step of stirring the washed wet cake under heating in a nonaqueous solvent to obtain an oxo-titanylphthalocyanine crystal.
Titanylphthalocyanine comprising specific polymorph and method for producing thereof, and electrophotographic photoreceptor comprising charge generating material thereof
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Page/Page column 9-10; 11-12, (2008/12/08)
The present invention relates to a titanylphthalocyanine represented by the formula (1): comprising a polymorph having a peak at a Bragg angle (2θ ± 0.2°) in X-ray diffraction spectrum with CuK α-ray: 9.0°, 9.6°, 14.1°, 14.9°, 17.9°, 18.3°, 23.4°, 24.5° and 27.2°; and and wherein Ir1 is the ratio (9.6°/9.0°) of the intensity of the peak at Bragg angle of 9.6° to the intensity of the peak at Bragg angle of 9.0°; Ir2 is the ratio (14.1°/14.9°) of the intensity of the peak at Bragg angle of 14.1 ° to the intensity of the peak at Bragg angle of 14.9°; Ir3 is the ratio (17.9°/18.3°) of the intensity of the peak at Bragg angle of 17.9° to the intensity of the peak at Bragg angle of 18.3°; and Ir4 is the ratio (24.5°/23.4°) of the intensity of the peak at Bragg angle of 24.5° to the intensity of the peak at Bragg angle of 23.4°. The present invention can provide the above novel titanylphthalocyanine having superior photoreceptor characteristics, particularly superior chargeability and photosensitivity to those of the conventional titanylphthalocyanines, and a method for producing the present titanylphthalocyanine, as well as an electrophotographic photoreceptor comprising a charge generating material of the present titanylphthalocyanine, which has excellent photosensitive characteristics.
METHOD FOR PRODUCING A PIGMENT
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Page/Page column 7, (2008/12/07)
Provided is a method for producing a pigment, in particular, a metal phthalocyanine, in high yield and in a green process. The method has (1) a step of obtaining a solution mixture by mixing at least one type of compound serving as a raw material for a pigment with a solvent, and (2) a step of obtaining the pigment by reacting the compound while holding the solution mixture at not less than a temperature where a subcritical state or a supercritical state of the solvent occurs.
Organic photosensitive pigment
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Page/Page column 6-7, (2008/06/13)
Processes for making organic photosensitive pigments for charge generating layers of imaging members. The pigments may include titanyl phthalocyanine. The pigments may be synthesized through a partially electrochemical or purely electrochemical process. The pigments may be used in a charge generating layer of an imaging member having a substrate, the charge generating layer, and a charge transfer layer.