|7387668||Azo compound, aqueous dye solutions containing the same, inks and use thereof|
An azo compound which is reduced in the copper ion content and exhibits hue and clarity suitable for ink-jet recording and which can give records having excellent light fastness, water resistance, and moisture proofness, and such ozone resistance as to control the f...
|7226498||Ink jet yellow ink, ink jet light-color ink, ink set, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus|
To provide an ink jet yellow ink having a favorable color tone and capable of providing an image excellent in humidity resistance. The ink jet yellow ink of the present invention is an ink jet yellow ink to be used in combination with an ink jet light-color ink comp...
|7056374||Aqueous ink composition, water-soluble dye composition and ink-jet recording method|
An aqueous ink composition which comprises a compound represented by the formula (1) or the salt thereof: (1) wherein R1 and R2 independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkanoylamino group, an alkoxyalkoxy gr...
|6448384||Bisazo compound and electrophotographic photoconductor using the same|
An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon which contains at least one bisazo compound of formula (I): ##STR1## wherein Cp1 and Cp2 are each a coupler radical wh...
|6365719||Bridged disazo compounds|
Compounds of formula (I) ##STR1## with the meanings of D, R1, R2, X and Y as given in claim 1 can be used as paper dyes or direct dyes or for the preparation of ink-jet inks....
|5646257||Azodyestuffs, their preparation and their use|
The new dyestuffs of the formula (I) ##STR1## wherein the substituents R and R1 and the index n have the meaning given in the description, are outstandingly suitable for dyeing and printing cellulose-containing materials, in particular for...
|5637679||Azo dyestuffs for dyeing and printing cellulose-containing fiber materials in an ink jet process|
New azo dyestuffs of the formula (I) ##STR1## wherein n in each case independently of one another represents 0 or 1, a, b and c independently of one another denote 1 or 2, a+c
|5623062||Bisazo compounds as charge generating materials|
An electrophotographic photoconductor is disclosed, which comprises an electroconductive support and a photoconductive layer formed thereon comprising a bisazo pigment having the formula (I) serving as a charge generating material: ##STR1## wher...
|5569749||Organic photoconductive material and a photosensitive material for electronic photography using it|
An organic photoconductive material is represented by the following general formula : A1 --N.dbd.N--B--N.dbd.N--A2 , wherein B is a divalent organic group bonded to nitrogen atoms forming azo groups, A1
|5554734||AZO dyes containing a bridge member based on stibene and morpholino-substituted triazine|
Azo dyes of formula ##STR1## wherein R1, R2, R3 and R4 are each independently of one another hydrogen or unsubstituted or substituted C1 -C4 alkyl, R5 and R6 are ...
|5506346||Organic photoconductive material and a photosensitive material for electronic photography using it|
An organic photoconductive material is represented by the following general formula : A1 -N.dbd.N-B-N.dbd.N-A2 , wherein B is a divalent organic group bonded to nitrogen atoms forming azo groups, A1
|5495003||2,2'-disulfo-4,4'-substituted triazinylaminophenyl disazostilbenes|
The disazo dyestuffs and mixtures thereof, of the general formula I ##STR1## wherein the symbols R1, R2, R3, R4, R5 and M possess the significances given in claim 1, are eminently suitable for dy...
|5468848||Basic azo dyestuffs of the 3-cyano-2,4,6-triamino pyridine series|
The new basic azo dyestuffs of the formula ##STR1## wherein the symbols have the meaning given in the description, are suitable for dyeing synthetic and naturally occurring substrates which can be dyed with basic dyestuffs....
|5328995||Azo dyes containing triazine middle components and a 1,4-phenylene-2,5-disubstituted coupling component|
The compounds of the formula ##STR1## where the substituents are as defined in claim 1, are direct dyes for various substrates, in particular cellulosic fibre materials. They are high temperature resistant and therefore are particularly highly suitab...
|5272259||Stilbene dyestuffs and light-polarizing films or sheets containing stilbene|
Dyestuffs which in the form of the free acid conform to the formula ##STR1## in which X and Y independently represent --N.dbd.N--R, --CF3, --CONH2, --CONHR1, --CONR1 R2, --COOH, --COOR1, ...
|5262330||Colorimetric methods and reagents for the assay of calcium in a test sample|
A chromogenic compound found to be especially selective in the determination of calcium in blood of the general formula (I): ##STR1## where: R is hydrogen or lower alkyl; X is CH2, CH2 CH2, CH.dbd.CH, O, S, SO2,...
|5097022||Bisazo pigments for use in electrophotographic photoconductors|
An electrophotographic photoconductor comprises an electroconductive support and a photoconductive layer formed thereon comprising a bisazo compound having the formula (I) serving as a charge generating material: ##STR1## wherein Y represents a halog...
|5081233||Bisazo compounds and electrophotographic photoconductors comprising the bisazo compounds|
A bisazo compound of the general formula: ##STR1## where Ar is selected from the group consisting of substituents (a) ~ (i), a dinitro compound, a diamino compound, and a tetrazonium salt, which respectively serve as a starting material, a first int...
|4954133||Mixtures of a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having two 4,4'-(2,2'-disulfostilbenylene) radicals and a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having one such radical|
Compounds of the formula ##STR1## wherein each A, independently, is a ##STR2## wherein R1 is hydrogen, halo, C1-4 alkyl or C1-4 alkoxy, R2 is hydrogen, halo, C1-4 alkyl, C1-4 alkoxy, ...
|4940783||Disazo containing diaminostilbene as diazo component and an aniline coupling component bearing a cationic alkyl ammonium group|
Disazo dyes which are suitable for dyeing and printing, especially of paper of all kinds. The dyes correspond to the formula ##STR1## in which R1, R2, R3 and R4 are each an alkyl radical, A is an alkylene radica...
|4883866||Methine-azo compounds containing cyclic cationic ammonium groups|
Methine-azo compounds of the formula ##STR1## in which A is the complement to a heterocyclic 5- or 6-membered ring which has a quaternized N atom as a ring member, which can contain further hetero atoms and which can be substituted and/or fused with ...
|4743523||Photosensitive member for electrophotography|
A photosensitive member for electrophotography comprising a photosensitive layer containing an azo pigment selected from those represented by the following formulas (1)-(6): ##STR1## wherein R is an alkyl, aralkyl, aryl, or acyl each capable of havin...
|4735882||Trisazo photsensitive member for electrophotography|
An electrophotographic photosensitive member comprises a photosensitive layer containing an azo pigment selected from the following general formulae (1) to (5): ##STR1## wherein groups Ar are arylene groups and divalent heterocyclic groups, each...
|4663442||Disazo triphenylamine compounds|
A disazo compound, having the general formula, ##STR1## wherein Y represents a substituted or non-substituted cyclic hydrocarbon or substituted or non-substituted heterocycle; R represents hydrogen, substituted or non-substituted alkyl group, or subs...
|4622280||Disazo compound, and photoconductive composition and electrophotographic photoreceptor containing the same|
Disazo compounds represented by the following general formula (I) are disclosed. The compounds can function as effective photoconductive substances and further, as efficient charge carrier (both electron and positive hole) generating compounds in an elect...
|4598032||Photoconductive member with a-Si; a-(Si/Ge) and a-(Si/C) layers|
A photoconductive member having a substrate for photoconductive member and a light-receiving layer having photoconductivity provided on said substrate is prepared in which the light-receiving layer comprises from the side of said substrate a first layer (...
|4568623||Photoconductive compositions containing novel disazo compounds and electrophotographic photoreceptors using the same|
Disazo compounds of a specified structure as a photoconductive element for photoreceptors in an electrophotographic process, which achieve higher photosensitivity and higher durability compared with conventional organic photoconductive materials, useful w...
|4562131||Photoreceptor containing a trisazo compound for use in electrophotography|
A photoreceptor is disclosed which comprises a photosensitive layer and an electrically conductive support. Said photosensitive layer contains a carrier generation material and a carrier transport material, said carrier generation material being a trisazo...
|4557988||Disazo compounds, photoconductive compositions and electrophotographic light-sensitive materials containing the same|
Disazo compounds as well as the compositions an electrophotographic light-sensitive materials utilizing them are disclosed. The disazo compounds are represented by the general formula (I): ##STR1## wherein the substituents within the general formula ...
|4551404||Disazo electrophotographic photosensitive member|
An electrophotographic photosensitive member characterized by containing at least one azo pigment represented by the following formula (1), (2), or (3): ##STR1## In these formulae; ##STR2## wherein Z represents ##STR3## in which R...
|4540651||Electrophotographic photosensitive member|
There is disclosed an electrophotographic photosensitive member comprising a photosensitive layer comprising a combination of a carrier generating layer and a carrier transporting layer provided on an electroconductive support, the carrier generating laye...
|4537847||Disazo photoreceptors for electrophotography|
Photoreceptor for electrophotography comprising a conductive support and an overlaying photosensitive layer thereon, said photosensitive layer containing at least one azo compound of Formula I or II ##STR1## wherein Ar1, Ar2, Ar...
|4533613||Disazo compounds and photoconductive composition as well as electrophotographic light sensitive element containing the same|
An electrophotographic light sensitive element is disclosed. The element is comprised of a photoconductive support base having provided thereon a disazo compound dispersed in a binder or a charge carrier-transporting medium. A novel group of disazo compou...
|4529678||Electrophotographic photoconductor comprising a dithiol derivative|
An electrophotographic photoconductor is disclosed, which comprises an electroconductive support material and a photosensitive layer comprising at least one 1,3-dithiol derivative of the formula ##STR1## wherein R1 and R2 indepe...
|4490151||Disazo sulfophenylpyrazolonestilbene dyes and direct dyes to color cellulose black|
New disazo sulphophenyl pyrazolone-sulpho stilbene compounds are useful as orange-hued dyes for cellulosic having excellent color stability over a wide pH range and when in aqueous solution are useful as liquid paper black dyes....
|4486519||Bisazo compounds and electrophotographic photoconductors comprising the bisazo compounds|
A novel bisazo compound of the formula ##STR1## where n=2 or 3, and A is ##STR2## when n=2, and when n=3, A is the above (a), (b) or (c), and an electrophotographic photoconductor comprising, on an electroconductive support material, a phot...
|4483796||Sulfo group-free disazo and polyazo compounds containing two 1-phenylpyrazol-5-one coupling component radicals and at least two basic or cationic groups|
Disazo and polyazo compounds of the formula ##STR1## wherein each A is independently ##STR2## and each R3 is independently C1-4 alkyl, or each A, R3 and the ##STR3## radical to which they are attached, take...
|4455258||Disazo sulfophenylpyrazolone-sulfostilbene dyes|
A new group of disazo sulphophenylpyrazolone-sulphostilbene compounds useful as orange-hued dyes for cellulosics having excellent color stability over a wide range of pH. When mixed with certain direct blue dyes and also with combinations of certain direc...
|4427753||Electrophotographic photosensitive member with disazo or trisazo compound|
An electrophotographic photosensitive member comprises a layer containing at least one azo pigment represented by the following formula (I): ##STR1## in the formula, Cp represents a coupler residue; A1 and A2 each represent a di...
|4390470||Tetrakisazo dyes containing a stilbenylene or 2,2'-disulfostilbenylene radical|
Disclosed are compounds of the formula, ##STR1## wherein the X's are the same and are hydrogen or --SO3 M, Y is hydrogen, C1-4 alkyl, C1-4 alkoxy, hydroxy, halogen, --COOM or --SO3 M, K1 and K2