Abstract:
PURPOSE:To obtain always a good copied image with high sensitivity without any accumulation of potential even during repeated uses by incorporating a specified bisazo compd. in a carrier generating layer and a specified styryl compd. and an amino deriv. in a carrier transfer layer. CONSTITUTION:A carrier generating layer incorporates a compd. represented by formula I or II in which Ar1, Ar2, Ar3 are optionally substd. aromatic carbon rings; R1, R2 are electron acceptor groups, such as CN; A is one of groups represented by formulae III-V, or the like; X is OH, optionally substd. amino, or the like; A' is optionally substd. aryl; Y is H, halogen, optionally substd. alkyl, or the like; Z is an atomic group constituting an optionally substd. aromatic carbon or hetero ring; R3 is H, optionally substd. amino, COOH, or the like; n is 1 or 2; and m is 0-4. A carrier transfer layer incorporates a compd. represented by formula VI or VII in which R7, R8 are each optionally substd. alkyl or phenyl; R9 is optionally substd. phenyl, naphthyl, heterocyclic, or the like; R10-R13 are each H, halogen, or the like. Thus, a photosensitive body of long life is obtained.
Abstract:
PURPOSE:To obtain always a superior copied image with high sensitivity without any accumulation of potential even during repeated uses by incorporating a specified bisazo compd. in a carrier generating layer and a specified hydrazone compd. in a carrier transfer layer. CONSTITUTION:A carrier generating layer incorporates a compd. represented by formula I or II in which Ar1, Ar2, Ar3 are optionally substd. aromatic carbon rings; R1, R2 are an electron acceptor groups, such as CN; A is one of groups represented by formulae III, IV, etc.; X is OH, optionally substd. amino, or the like; Y is H, halogen, optionally substd. alkyl, COOH, or the like; R3 is H, optionally substd. amino, or the like; A' is optionally substd. aryl; n is 1 or 2; and m is 0-4. A carrier transfer layer incorporates a compd. represented by formula V or VI in which R7, R9 are each an optionally substd. aryl or heterocyclic; R8, R10 are each H, optionally substd. alkyl or aryl; X1 is H. halogen, alkyl, optionally substd. amino or alkoxy; X2 is same as X1 or CN; and p, q are each 0 or 1. Thus, a long-lived photosensitive body is obtained.
Abstract:
PURPOSE:To satisfy fundamental characteristics requirements for a photoreceptor, to lower manufacturing cost, and to enhance heat and mechanical characteristics, by incorporating an amidine compd. represented by a specified general formula as a charge transfer substance in a photosensitive layer in an electrophotographic receptor obtained by forming a photosensitive layer on a conductive substrate. CONSTITUTION:A photosensitive layer 2 composed of an amidine compd. represented by general formula I or II, a sensitizing dye, and a binder is formed on a conductive substrate 1. In the formulae I , II; R1, R3 are each H, lower alkyl, lower alkoxy, or halogen; R2, R4 are each lower alkyl, aralkyl, or phenyl; Ar1 is benzene, polycyclic aromatic ring, or hetero ring, and all may be substd. by lower alkyl, halogen, lower alkoxy, or lower alkylamino; R5 is lower alkyl, aralkyl, or phenl; and Ar2 is benzene optionally substd. by lower alkyl, lower alkoxy or halogen.
Abstract translation:目的:为了满足感光体的基本特性要求,降低制造成本,提高热和机械特性,通过掺入脒化合物。 由通过在导电性基材上形成感光层得到的电子照相用感光体中的电荷转移物质作为电荷转移物质表示。 构成:由脒化合物组成的感光层2。 由通式I或II表示,在感光性基材1上形成增感色素和粘合剂。 R1,R3各自为H,低级烷基,低级烷氧基或卤素; R 2,R 4各自为低级烷基,芳烷基或苯基; Ar 1是苯,多环芳环或杂环,全部可以被取代。 低级烷基,卤素,低级烷氧基或低级烷基氨基; R5是低级烷基,芳烷基或苯基; 并且Ar 2是任选被取代的苯。 低级烷基,低级烷氧基或卤素。
Abstract:
PURPOSE:To obtain an electrophotographic receptor superior in sensitivity, durability, flexibility, etc., by forming a photosensitive layer contg. a specified hydrazone compd. on a conductive substrate. CONSTITUTION:The intended electrophotographic receptor is obtained by forming on a conductive substrate of an aluminum plate or the like, a photosensitive layer consisting of a hydrazone compd. having formula I (in which formula IIis a hydrocarbon or hetero ring each optionally substd., and R1, R2 are each hydrocarbon or hetero ring each optionally substd.), a binder, when needed, together with a sensitizing dye, an electron attractive compd., etc. Said hydrazone compd. of formula I is obtained, for example, by reacting a ketone compd. represented by formula III with a hydrazine compd. in ethyl alcohol in the presence of acetic anhydride as a catalyst under reflux. Embodiments of said hydrazone compds. are exemplified by compds. having formulae V, VI, etc.
Abstract:
PURPOSE:To obtain a novel hydrazone compd. high in solubility in a binder polymer capable of forming a uniform and high-sensitivity charge transfer layer, and a high-sensitivity electrophotographic receptor having a layer contg. it. CONSTITUTION:A hydrazone compd. represented by general formula ( I ) is prepared by reacting aldehydes represented by genraal formula (II) with equimolar or a little excessive diphenylhydrazine or its minearl acid salt in a solvent at a temp. up to the reflux temp. of the solvent. In formulae ( I ), (II), R represents 5-10C straight or branched chain alkyl, alkenyl, alkadienyl, or 7-10C aralkyl. A photosensitive layer 5 consisting of a charge generating layer composed mainly of a charge generating substance 2 and a charge transfer layer 4 contg. a hydrazone compd. uniformly is formed on a conductive substrate 1 to obtain a photoreceptor. The hydrazone compd. constitutes the charge transfer layer 4 together with a binder.
Abstract:
PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor that includes an outermost surface layer having excellent electrical characteristics and scratch resistance.SOLUTION: There is provided an electrophotographic photoreceptor that includes a charge transport layer 3 including a charge transport material and a polycarbonate copolymer, and an outermost surface layer (protective layer 5) that is provided on the charge transport layer, is a film formed of a composition containing a chain polymerizable compound, and has an A value of 0.1 or more and 0.3 or less, which is obtained by a Fourier transform infrared spectroscopy total reflection method and represented by the following formula (1): A=(S1/S3)-(S0/S3), and a B value of 0.02 or less, which is represented by the following formula (2): B=S2/S3.