公开(公告)号：DE68922935T2

公开(公告)日：1996-02-08

申请号：DE68922935

申请日：1989-06-20

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMASAKI HARUMASA ,  MATSUSE TAKASHI ,  SAKUMA TADASHI ,  TOGASHI HIROYASU

IPC: C07D213/16 ,  C07D213/30 ,  C07D213/38 ,  C07D237/08 ,  C07D239/26 ,  C07D241/12 ,  C07D241/42 ,  C07D241/46 ,  C09B23/00 ,  C09B23/14 ,  G03G5/06

Abstract: A photoreceptor is useful for electrophotography and comprises (a) an electrically conductive substrate, (b) an electrric charge carrier generation layer and (c) an electric charge carrier transport layer containing therein an electric charge carrier transport compound having the formula (1): in which R1, R1 min and R1 sec each are hydrogen, a linear or branched alkyl, a linear or branched alkyl having a substituent(s), an aryl or an aryl having a substituent(s), R2, R3, R2 min , R3 min , R2 sec and R3 sec each are hydrogen, a linear or branched alkyl, a linear or branched alkyl having a substituent(s), an aryl, an aryl having a substituent(s), an alkenyl, an alkenyl having a substituent(s), a heterocyclic ring or a heterocyclic ring having a substituent(s), R2 and R3 may form a ring with their adjacent carbon, R2 min and R3 min may form a ring with their adjacent carbon and R2 sec and R3 sec may form a ring with their adjacent carbon, A is a trivalent, aromatic hydrocarbon group.

公开(公告)号：DE68922935D1

公开(公告)日：1995-07-13

申请号：DE68922935

申请日：1989-06-20

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMASAKI HARUMASA ,  MATSUSE TAKASHI ,  SAKUMA TADASHI ,  TOGASHI HIROYASU

IPC: C07D213/16 ,  C07D213/30 ,  C07D213/38 ,  C07D237/08 ,  C07D239/26 ,  C07D241/12 ,  C07D241/42 ,  C07D241/46 ,  C09B23/00 ,  C09B23/14 ,  G03G5/06

Abstract: A photoreceptor is useful for electrophotography and comprises (a) an electrically conductive substrate, (b) an electrric charge carrier generation layer and (c) an electric charge carrier transport layer containing therein an electric charge carrier transport compound having the formula (1): in which R1, R1 min and R1 sec each are hydrogen, a linear or branched alkyl, a linear or branched alkyl having a substituent(s), an aryl or an aryl having a substituent(s), R2, R3, R2 min , R3 min , R2 sec and R3 sec each are hydrogen, a linear or branched alkyl, a linear or branched alkyl having a substituent(s), an aryl, an aryl having a substituent(s), an alkenyl, an alkenyl having a substituent(s), a heterocyclic ring or a heterocyclic ring having a substituent(s), R2 and R3 may form a ring with their adjacent carbon, R2 min and R3 min may form a ring with their adjacent carbon and R2 sec and R3 sec may form a ring with their adjacent carbon, A is a trivalent, aromatic hydrocarbon group.

公开(公告)号：DE69111645D1

公开(公告)日：1995-09-07

申请号：DE69111645

申请日：1991-03-13

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMASAKI HARUMASA ,  MATSUSE TAKASHI ,  SAKUMA TADASHI ,  TOGASHI HIROYASU

IPC: C07F7/08 ,  G03G5/05 ,  G03G5/06 ,  C07F7/10 ,  G03G5/047

Abstract: A compound represented by the formula (1) : wherein Ar1 represents an arylene group; Ar2 and Ar3 independently represent an aryl group or an arylene group; R2 and R3, which may be identical or not, independently represent a hydrogen atom or an alkyl group having a carbon number of 4 or less, or R2 and R3 both represent -SiR4R5R6 (R4, R5 and R6, which may be identical or not, independently represent an alkyl group, aralkyl group or aryl group which may be substituted); R1 represents -SiR7R8R9 (R7, R8 and R9, which may be identical or not, independently represent an alkyl group, cycloalkyl group, aralkyl group or aryl group which may be substituted, or none (only in the case where R2 and R3 represent -SiR4R5R6), one or two of R7, R8 and R9 represent the following : wherein Ar1, Ar2, Ar3, R2 and R3 have the same definitions as above), a method of its production and a photoreceotor for electrophotography incorporating it as a charge transport material. The photoreceptor is very excellent in sensitivity and durability.

公开(公告)号：JPH05303215A

公开(公告)日：1993-11-16

申请号：JP10637292

申请日：1992-04-24

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMAZAKI HARUMASA ,  MATSUSE TAKASHI ,  SAKUMA TADASHI

IPC: C07D213/74 ,  G03G5/04 ,  G03G5/05

Abstract: PURPOSE:To provide an electrophotographic sensitive body giving high image density. CONSTITUTION:This electrophotographic sensitive body has an electric conductive substrate, an electric charge generating layer and an electric charge transferring layer formed on the substrate as essential constituent elements and contains a pyridine compd. represented by the formula in the electric charge transferring layer as the uppermost layer. In the formula, each of R1 and R2 is alkyl, R1 and R2 may form a ring in combination with N and A is cyano or nitro.

公开(公告)号：JPH05297614A

公开(公告)日：1993-11-12

申请号：JP12418392

申请日：1992-04-16

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMAZAKI HARUMASA ,  TOGASHI HIROYASU

IPC: C07D209/48 ,  G03G5/06

Abstract: PURPOSE:To obtain a charge transfer-type acceptor compd. excellent in stability and safeness which can be used for a positive charge function separation-type photosensitive body by using a specified benzophenone tetracarboxylic acid diimide compd. CONSTITUTION:A benzophenone tetracarboxylic acid diimide compd. expressed by formula is used for a photographic sensitive body. In formula, R is an alkyl group, aralkyl group or aryl group having =4 and , A are same or different hydrogen atoms, alkyl groups having

公开(公告)号：JPH05158259A

公开(公告)日：1993-06-25

申请号：JP32573391

申请日：1991-12-10

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMAZAKI HARUMASA ,  SAKUMA TADASHI

IPC: G03G5/047 ,  G03G5/05

Abstract: PURPOSE:To provide an electrophotographic sensitive body having high sensitivity and high durability. CONSTITUTION:This electrophotographic sensitive body has an electric conductive substrate, an electric charge generating layer and an electric charge transferring layer as essential constituent elements and the electric charge generating layer contains binaphthyltetracarboxylic acid diimide represented by the formula [where R is

公开(公告)号：JPH0580550A

公开(公告)日：1993-04-02

申请号：JP24312591

申请日：1991-09-24

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMAZAKI HARUMASA ,  TOGASHI HIROYASU ,  AOKI KATSUTOSHI

IPC: G03G5/06

Abstract: PURPOSE:To obtain an electrophotographic sensitive body having high sensitivity and high durability. CONSTITUTION:This electrophotographic sensitive body contains a triarylamine compd. in the photosensitive layer formed on the electric conductive substrate. The triarylamine compd. has one or more triarylamine skeletons represented by the formula (where each of Ar1-Ar3 is optionally substd. aryl and Ar1-Ar3 may be different from each other) and an alkylenecarboxylic ester group represented by a formula -(CH2)m-COOR [where R is optionally substd. alkyl, aralkyl or aryl and (m) is an integer of 1-6] has been substd. for at least one of the aryl groups.

公开(公告)号：JPH0578261A

公开(公告)日：1993-03-30

申请号：JP2167391

申请日：1991-01-21

Applicant: KAO CORP

Inventor： TOGASHI HIROYASU ,  YAMAZAKI HARUMASA ,  MISHIMA MASAYUKI ,  AOKI KATSUTOSHI

IPC: C07B61/00 ,  C07B37/04 ,  C07C2/86 ,  C07C13/567 ,  C07C15/50 ,  C07C15/52 ,  C07C17/266 ,  C07C25/24 ,  C07C41/30 ,  C07C43/215 ,  C07C209/68 ,  C07C211/50 ,  C07C211/54 ,  C07C211/57 ,  C07D209/80 ,  C07D213/127

Abstract: PURPOSE:To obtain the subject compound in high purity and yield by reacting a trihalogenated benzene with a vinyl compound in the presence of a transition metallic compound, a triarylphosphine and a base. CONSTITUTION:A trihalogenated benzene expressed by formula I (X is Cl, Br or I) is made to react with a vinyl compound expressed by formula II (R1 is H, alkyl or aryl; R2 and R3 are H, alkyl, aryl, alkenyl, heterocyclic ring, etc.) in the presence of a group VIII transition metallic compound (e.g. palladium acetate), a triarylphosphine and a basic substance (e.g. tributylamine) in a solvent such as N,N-dimethylformamide at ambient temperature to 200 deg.C(to provide the objective compound expressed by formula III. The compound expressed by formula I is useful as electrophotographic photoreceptors, fluorescent brighteners, etc., and especially useful as a material for the electrophotographic photoreceptors excellent in sensitivity and durability.

公开(公告)号：JPH0561224A

公开(公告)日：1993-03-12

申请号：JP21995091

申请日：1991-08-30

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMAZAKI HARUMASA ,  TOGASHI HIROYASU ,  AOKI KATSUTOSHI

IPC: G03G5/06

Abstract: PURPOSE:To obtain superior sensitivity and durability by using a specified bisazo pigment as an electric charge generating material. CONSTITUTION:The photosensitive body is provided on a conductive substrate with the photosensitive layer containing as the charge generating material at least one of the bisazo pigments represented by formula I in which A is represented by formula II and the like; Cp is a coupler residue represented by formula III and the like; and each of R1 and R2 is optionally substituted alkyl, aryl, or aralkyl. The photosensitive body can be alternatively formed by forming a charge transfer layer on the conductive substrate, and on this layer the charge generating layer containing this bisazo pigment, thus permitting negative charge generated by exposure to neutralize surface charge, and positive charge to be transferred through the charge transfer layer to the conductive substrate, and accordingly, superior sensitivity and superior durability to be obtained.

公开(公告)号：JPH0534955A

公开(公告)日：1993-02-12

申请号：JP21619091

申请日：1991-08-01

Applicant: KAO CORP

Inventor： MISHIMA MASAYUKI ,  YAMAZAKI HARUMASA ,  MATSUSE TAKASHI ,  IKEDA CHIKAKO

IPC: G03G5/00 ,  G03G5/05

Abstract: PURPOSE:To improve the adhesive property and fitness of an electric charge generating layer to an electric charge transferring layer, to increase injection efficiency and to enhance the sensitivity and durability of the resulting sensitive body by coating a substrate with a coating material for the electric charge generating layer, forming the electric charge transferring layer by coating without passing through a drying process and then carrying out drying. CONSTITUTION:An electric conductive substrate is coated with a coating material for an electric charge generating layer prepd. by suspending or dissolving an electric charge generating material and a binder in a solvent, an electric charge transferring layer is formed on the coated substrate by coating without passing through a drying process and then drying is carried out to produce an electrophotographic sensitive body.