摘要:
An electrophotographic photosensitive member is formed of a support, and a photosensitive layer disposed on the support. The photosensitive layer is characterized by containing an azo pigment having an organic group represented by formula (1) below: wherein A denotes a residue group of formula (1A) below: ##STR1## and k.sub.1, k.sub.2, Z.sub.1, Z.sub.2, D; R.sub.1 and R.sub.2 are defined in the text. The group of the formula (1) may provide at least one of up to 4 azo-substituents of the azo pigment having an entire structure represented by ##STR2## wherein Ar denotes an aromatic or heterocyclic core unit, Cp denotes a coupler residue group, and --(N.dbd.N--Cp) denotes such an azo-substituent. The photosensitive member can exhibit good electrophotographic performances including high and stable sensitivity on repetitive use.
摘要翻译:电子照相感光构件由支撑体和设置在支撑体上的感光层形成。 感光层的特征在于含有具有由下式(1)表示的有机基团的偶氮颜料:其中A表示下式(1A)的残基:和k1,k2,Z1,Z2,D; R1和R2在文中定义。 式(1)的基团可以提供具有由Ar表示芳族或杂环核心单元表示的整个结构的至多4个偶氮颜料的偶氮取代基中的至少一个,Cp表示成色剂残基,和 - ( N = N-Cp)表示这种偶氮取代基。 感光构件可以表现出良好的电子照相性能,包括对重复使用的高且稳定的灵敏度。
摘要:
An electrophotographic photosensitive member is disclosed which has a photosensitive layer on a conductive support. The photosensitive layer contains an azo pigment of Formula (1):Ar--(--N.dbd.N--Cp).sub.n.Also, disclosed are an electrophotographic apparatus, a device unit, and a facsimile machine using the electrophotographic photosensitive member.
摘要翻译:公开了一种电子照相感光构件,其在导电支撑件上具有感光层。 感光层含有式(1)的偶氮颜料:Ar - ( - N = N-Cp)n。 此外,公开了电子照相设备,设备单元和使用电子照相感光构件的传真机。
摘要:
The present invention relates to an improvement of a photosensitive member having a photosensitive layer which contains a specific amino compound as a charge transporting material.
摘要:
An electrophotographic photosensitive member has a conductive support and a photosensitive layer provided on said conductive support. Said photosensitive layer contains an azo pigment.
摘要:
An electrophotographic photoreceptor is disclosed, which comprises an electrically conductive support having thereon a layer which contains a charge carrier transporting compound and a charge carrier generating compound, or a layer which contains charge carrier transporting compound and a layer which contains a charge generating compound, wherein at least one type of tris-azo compound represented by formula (I) is included as a charge carrier generating compound: ##STR1## wherein Ar.sub.1, Ar.sub.2, Ar.sub.3, Ar.sub.4 and A are as defined in the specification.
摘要:
An electrophotographic photosensitive member has a photosensitive layer on an electroconductive support, characterized in that the photosensitive member contains an azo pigment having an organic residue represented by the formula (I).
摘要:
This invention relates to an electrophotographic photosensitive member utilizing a novel electrophotographic photosensitive material, more particularly to an electrophotographic photosensitive member endowed with high sensitivity as well as excellent potential stability during repeated copying by incorporating an azo pigment having a specific molecular structure in the photosensitive layer.
摘要:
A photoreceptor comprising a support and a photosensitive layer which contains an azo compound of the formula [I]: ##STR1## wherein Q is a halogen atom, a hydrogen atom, an alkyl group, an alkoxy group, an alkylsulfonyl group, an aryl group, an acetylamido group, ##STR2## (Q.sub.1 is an alkyl group, an alkoxy group, a phenyl group, an amino group, a hydroxy group or a hydrogen atom) or ##STR3## (Q.sub.2, Q.sub.3 and Q.sub.4 independently are an alkyl group, an alkoxy group, a phenyl group, an acyl group, an ester group, a hydroxy group, a cyano group, a vinyl group, a halogen atom or a hydrogen atom), said alkyl group, alkoxy group, aryl group, amino group and vinyl group may have a substituent; Y.sub.1 and Y.sub.2 independently are a hydrogen atom, a halogen atom, a cyano group, a hydroxy group, an alkyl group or an alkoxy group; m and n each represent an integer of 0 to 2, and m and n cannot be both 0; A is any one of the following formulae: ##STR4## wherein Z is a group of atoms necessary for constituting a substituted or unsubstituted aromatic carbon ring or an aromatic heterocyclic ring, P.sub.3 is a substituted or unsubstituted carbamoyl group or a substituted or unsubstituted sulfamoyl group, R.sub.1 is a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted amino group, a substituted or unsubstituted carbamoyl group, a carboxyl group and its ester group or a cyano group, A' is a substituted or unsubstituted aryl group, R.sub.2 and R.sub.3 independently are a substituted or unsubstituted alkyl group, a substituted or unsubstituted aralkyl group or a substituted or unsubstituted aryl group.
摘要:
There is disclosed an electrophotosensitive receptor which comprises a conductive support and an electrophotosensitive layer which comprises a carrier transporting material and a specified trisazo compound wherein the azo compound is applied as a coating solution containing a solvent or as a liquid dispersion mixture containing a dispersion medium. Alternatively, the electrophotosensitive receptor comprises a conductive support and an electrophotosensitive layer which comprises said azo compound wherein the azo compound is applied as a coating solution containing a solvent and a binder or as a liquid dispersion medium containing a dispersion medium and a binder.
摘要:
To provide an electrophotographic photoreceptor having a high sensitivity, a good balance of various electric properties such as chargeability and residual potential, a good stability of the coating solution, and an excellent light resistance.An electrophotographic photoreceptor comprising an electroconductive support having thereon a photosensitive layer, wherein the photosensitive layer contains a compound represented by the following formula (1): (wherein R1 represents a group having a chiral center, R2 represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group which may have a substituent, R3 and R4 each independently represents an alkylene group which may have a substituent, or an arylene group which may have a substituent, and R5, R6, R7 and R8 each independently represents an alkyl group which may have a substituent, or an aryl group which may have a substituent, and at least one member of R5 to R8 is an aryl group having a substituent).