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JPH0578595A |
PURPOSE: To obtain a new bisazo derivative useful for obtaining a charge generating material of excellent charge generation efficiency by selecting a specified bisazo derivative. CONSTITUTION: A bisazo derivative of formula I (wherein R1...
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JPH0578363A |
PURPOSE: To provide a new compound useful as an electric charge-generating material excellent in electric charge-generating efficiency. CONSTITUTION: The objective compound of formula I (R1 and R2 are each H or lower alkyl; Cp1 and Cp2 a...
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JPH0578361A |
PURPOSE: To provide a novel compound useful 0as an electric charge-generating material excellent in electric charge-generating efficiency. CONSTITUTION: The objective compound of formula I (R1 and R2 are each 0 or S; R3 and R4 are each H...
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JPH0518105B2 |
The present invention provides an multilayer type electrophotographic element comprising laminating a charge generating layer containing a trisazo pigment represented by the general formula (1) on an electrically conductive substrate: (1...
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JPH0518422B2 |
There is disclosed an electrophotographic photoreceptor comprising an electroconductive support and, provided thereon, a photosensitive layer containing (A) a trisazo pigment formed by the reaction between a coupler component represented...
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JPH0515262B2 |
PURPOSE:To enhance light responsivity and sensitivity by using a combination of a specified bisazo type compound and specified benzidine derivative. CONSTITUTION:The electrophotographic sensitive body is provided on a conductive substrat...
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JPH0515261B2 |
PURPOSE:To enhance light responsivity and sensitivity by using a combination of a specified bisazo type compound and specified benzidine derivative. CONSTITUTION:The electrophotographic sensitive body is provided on a conductive substrat...
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JPH0513502B2 |
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JPH0532906A |
PURPOSE: To obtain a new trisazo compound useful as a medium for light recording, ink, filter, optical shutter, photoelectric conversion element, light modulation element and space modulation element because of excellent solubility and l...
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JPH059787B2 |
Photoconductive imaging members comprising a supporting substrate, a hole transport layer, and a photogenerating layer comprising disazo compounds selected from the group consisting of: I. wherein X is selected from the group consisting ...
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JPH0525400A |
PURPOSE: To obtain a new bisazo compound having high solubility, molecular absorption coefficient and reflectance by subjecting a specific bis(diazonium) salt with a coupler to coupling reaction. CONSTITUTION: (A) A bis(diazonium) salt s...
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JPH055348B2 |
An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support, wherein said photosensitive layer contains a compound represented by the formula: +TR [wherein Ar1 represents a phenyl group having ...
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JPH052984B2 |
A laminated layer type electrophotographic photosensitive member has a charge generation layer and a charge transport layer on an electroconductive support, characterized in that the charge generation layer has at least one of disazo pig...
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JPH052144B2 |
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JPH051829B2 |
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JPH051828B2 |
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JPH05424B2 |
1. Water-soluble disazo compounds of the general formula (1) see diagramm : EP0094019,P34,F2 aliphatic radical or an optionally substituted aryl radical, R**6 is an optionally substituted aliphatic radical or an optionally substituted ar...
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JPH05426B2 |
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JPH04366852A |
PURPOSE: To provide an extremely high sensitivity characteristic and the stable potential stability at the time of repetitive use by incorporating a specific disazo pigment into a photosensitive layer. CONSTITUTION: The photosensitive la...
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JPH0480386B2 |
A photosensitive member for electrophotography comprises a photosensitive layer containing a trisazo pigment represented by the formula: (1) wherein Ar1 is a pyridylene group capable of having a substituent; Ar2 and Ar3 are respectively ...
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JPH0480032B2 |
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JPH04363363A |
PURPOSE: To obtain a new compound, excellent in solubility and useful as a water-soluble black dye for inks, textile materials, etc. CONSTITUTION: A compound expressed by formula I [Q1 is (substituted)phenylene or naphthylene; Q2 is (sub...
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JPH0473783B2 |
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JPH0473578B2 |
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JPH04333002A |
PURPOSE: To provide a polarizing film which has excellent polarization performance, is not changed by heat and moisture and is capable of maintaining polarization characteristics over a long period of time by incorporating specific dichr...
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JPH0472865B2 |
An agent for enhancing the fluidity of pigment dispersions comprising a composition of disazo compounds containing a water-insoluble disazo compound in which one of the terminal aromatic groups carries a single substituted ammonium-acid ...
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JPH04331262A |
PURPOSE: To obtain a novel compound useful as a dye by selecting a specific compound. CONSTITUTION: A compound of formula I [wherein D is a group of diazo component; A is H, (substituted) alkyl, (substituted) alkoxyl, halogen, carboxyl o...
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JPH04328169A |
PURPOSE: To obtain a novel azo-based compound, having high sensitivity within a near infrared region, excellent in light stability and useful as a charge- generating material in an electrophotographic photosensitive unit. CONSTITUTION: A...
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JPH04323269A |
PURPOSE: To provide a novel (poly)arylazodichroic dye which has wavelengths suitable for the preparation of a black dye compsn., high solubility and high coefficient of absorption, and is useful for display devices or the like. CONSTITUT...
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JPH0471107B2 |
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JPH0470344B2 |
Azo dyes of the formula and external salts thereof, wherein F is the residue of a monoazo or disazo compound in 1:1 metal complex form or of a trisazo, disazoazoxy or tetrakisazo compound in metal-free or 1:1 metal complex form, each X i...
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JPH0466913B2 |
A liquid crystal composition containing azo dyes represented by the formula (I0) (I0) wherein X represents A1 represents -O- or -NH-, R1 represents a hydrogen atom, an alkyl group, an alkoxyalkyl group, an aryloxyalkyl group, a dialkylam...
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JPH0466905B2 |
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JPH04296758A |
PURPOSE: To make it possible to obtain a light generating bisazo pigment and an image member which is formed by using the pigment and is sensitive to waveguides of a specific range by forming the member of a light forming layer consistin...
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JPH0464339B2 |
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JPH0462662B2 |
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JPH0462378B2 |
An electrophotographic photoreceptor according to this invention has a photosensitive layer in which a photoconductive substance with the following general formula (I):whereinX ist selected from the group consisting of hydrogen atom, low...
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JPH04278389A |
PURPOSE: To obtain good optical density and surprising good oil resistance by forming a thermal transfer print sheet from a support having a coating of a diazo dye represented by a specific chemical formula. CONSTITUTION: A film of a dia...
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JPH0458507B2 |
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JPH0454230B2 |
An electrophotographic photosensitive member is disclosed which has a photosensitive layer on an electroconductive support. The photosensitive layer contains a trisazo pigment having the specific structural formula.
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JPH0454232B2 |
An electrophotographic photosensitive material includes a photosensitive layer which is formed on a conductive support body and which contains an azo pigment expressed by Formula (1) described below, wherein at least one Cp in the Formul...
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JPH0454228B2 |
An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support, characterized in that said photosensitive layer contains a disazo pigment of the formula (1), wherein A1 and A2, which may be either...
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JPH0453907B2 |
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JPH0453309B2 |
PURPOSE:To obtain high sensitivity and superior durability by incorporating a specified azo pigment into a photosensitive layer. CONSTITUTION:The photosensitive layer contains an azo pigment having in the molecule an azo group combined w...
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JPH04236267A |
PURPOSE: To provide a new bisazo compound useful as a charge-generating pigment for photosensitive material for electrophotography. CONSTITUTION: The compound of formula I (A is H, Cl, NO2, CH3, C2H5 or OCH3), preferably the compound of ...
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JPH0452460B2 |
PURPOSE:To provide a photo-sensitive material for electrophotography, producible easily, and having stable characteristics to the repetitive use of the material, by using a specific disazo dye as a charge-generating material, and adding ...
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JPH0452459B2 |
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JPH0452458B2 |
PURPOSE:To obtain a repeatedly usable and long-lived and easily manufacturable electrophotographic sensitive body by laminating an electrostatic charge generating layer contg. a specified disazo compd. as a charge generating substance, a...
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JPH04227969A |
PURPOSE: To obtain a new diazo dyestuff useful to dye cellulosic materials and leather in blue shades of excellent wet-and light-fastness by selecting a specified diazo dyestuff (salt). CONSTITUTION: A diazo dyestuff (salt) represented b...
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JPH04224867A |
PURPOSE: To obtain azo dyes having excellent solubility in organic solvents, good light resistance, high coloring power and good transparency and being useful as light absorbers by providing a structure of a specified formula. CONSTITUTI...
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