Photosensitive member containing hydrazone compound with styryl structure

Claim 2

A photosensitive layer formed on or over the substrate and including a charge generating material and a hydrazone compound represented by the general formula (I); ##STR18## wherein R 1 and R 2 are independently a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; R 3 is a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s)); R 3 may form a condensed ring together with a benzene ring in the formula (I); Ar 1 and Ar 2 are independently an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are independently a hydrogen atom, an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are not hydrogen atoms at the same time; Ar 1 and Ar 2 , and/or Ar 3 and Ar 4 may form a ring in combination.

Claim 3

A photosensitive member of claim 1, wherein the hydrazone compound is a charge transporting material.

Claim 4

A photosensitive member of claim 1, wherein the photosensitive layer comprises a charge transporting layer and a charge generating layer.

Claim 5

A photosensitive member of claim 3, wherein the charge generating layer is 4 μm or less in thickness.

Claim 6

A photosensitive member of claim 3, wherein the charge transporting layer is 3-30 μm in thickness.

Claim 7

A photosensitive member of claim 3, the charge transporting layer comprises the hydrazone compound dispersed in a resin.

Claim 8

A photosensitive member of claim 6, wherein the charge transporting layer contains the hydrazone compound at the content of 0.2-2 parts by weight on the

Claim 9

A photosensitive member of claim 6, wherein volume resistance of the resin is 1×10 12 Ω.cm or more.

Claim 10

A photosensitive member of claim 1, wherein the photosensitive layer comprises the hydrazone compound and a charge generating material which are dispersed in a resin.

Claim 11

A photosensitive member of claim 9, wherein the photosensitive layer is 3-30 μm in thickness.

Claim 12

A photosensitive member of claim 9, wherein the photosensitive layer contains the chage genarating material at the content of 0.01-3 parts by weight on the basis of 1 part by weight of the resin.

Claim 13

A photosensitive member of claim 9, wherein the photosensitive layer contains the hydrazone compound at the content of 0.2-30 parts by weight on the basis of 1 part by weight of the resin.

Claim 14

A potosensitive member of claim 1, wherein a surface protective layer is formed on the photosensitive layer.

Claim 15

A photosensitive member of claim 1, wherein an intermediate layer is formed between the electrically conductive substrate and the photosensitive layer.

Claim 16

A photosensitive member comprising an electrically conductive substrate; and a photosensitive layer formed on or over the substrate and including a charge generating material and a hydrazone compound represented by the general formula (II); ##STR19## wherein R 1 and R 2 are independently a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; R 4 is a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 1 and Ar 2 are independently an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are independently a hydrogen atom, an alkyl group, an aryl group, a condensed polycyclic ring group, a substituent or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are not hydrogen atoms at the same time; Ar 1 and Ar 2 , and/or Ar 3 and Ar 4 may form a ring in combination.

Claim 17

A photosensitive member comprising an electrically conductive substrate; and a photosensitive layer formed on or over the substrate and including a charge generating material and a hydrazone compound represented by the general formula (II); ##STR19## wherein R 1 and R 2 are independently a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; R 4 is a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 1 and Ar 2 are independently an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are independently a hydrogen atom, an alkyl group, an aryl group, a condensed polycyclic ring group, a substituent or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are not hydrogen atoms at the same time; Ar 1 and Ar 2 , and/or Ar 3 and Ar 4 may form a ring in combination.

Claim 18

A photosensitive member of claim 15, wherein Ar 1 , Ar 2 , Ar 3 and/or Ar 4 are(is) an electon donating group respectively.

Claim 19

A photosensitive member of claim 15, wherein Ar 3 and Ar 4 are a phenyl group respectively.

Claim 20

A photosensitive member of claim 15, wherein Ar 3 and/or Ar 4 have(has) an electron donating substituent respectively.

Claim 21

A photosensitive member of claim 18, wherein the substituent is a substituted amino group or an alkoxy group.

Claim 22

A photosensitive member comprising an electrically conductive substrate; and a photosensitive layer formed on or over the substrate and including a charge generating material and a hydrazone compound represented by the general formula (III); ##STR20## wherein R 1 and R 2 are independently a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; Z is a residual group forming a condensed ring group together with a benzene ring in the formula (III); Ar 1 and Ar 2 are independently an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are independently a hydrogen atom, an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are not hydrogen atoms at the same time; Ar 1 and Ar 2 , and/or Ar 3 and Ar 4 may form a ring in combination.

Claim 23

A photosensitive member comprising an electrically conductive substrate; and a photosensitive layer formed on or over the substrate and including a charge generating material and a hydrazone compound represented by the general formula (III); ##STR20## wherein R 1 and R 2 are independently a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; Z is a residual group forming a condensed ring group together with a benzene ring in the formula (III); Ar 1 and Ar 2 are independently an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are independently a hydrogen atom, an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are not hydrogen atoms at the same time; Ar 1 and Ar 2 , and/or Ar 3 and Ar 4 may form a ring in combination.

Claim 24

A photosensitive member of claim 20, wherein Ar 1 , Ar 2 , Ar 3 and/or Ar 4 are(is) an electon donating group respectively.

Claim 25

A photosensitive member of claim 20, wherein Ar 3 and Ar 4 are a phenyl group respectively.

Claim 26

A photosensitive member of claim 20, wherein Ar 3 and/or Ar 4 have(has) an electron donating substituent respectively.

Claim 27

A photosensitive member of claim 23, wherein the substituent is a substituted amino group or an alkoxy group.

Claim 28

A photosensitive member comprising an electrically conductive substrate; and a photosensitive layer formed on or over the substrate and including a charge generating material and a hydrazone compound represented by the general formula (IV); ##STR21## wherein R 1 and R 2 are independently a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; Z is a residual group forming a condensed ring together with a benzene ring in the formula (IV); Ar 1 and Ar 2 are independently an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are independently a hydrogen atom, an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group these groups may have one or more substituent(s); Ar 3 and Ar 4 are not hydrogen atoms at the same time; Ar 1 and Ar 2 , and/or Ar 3 and Ar 4 may form a ring in combination.

Claim 29

A photosensitive member comprising an electrically conductive substrate; and a photosensitive layer formed on or over the substrate and including a charge generating material and a hydrazone compound represented by the general formula (IV); ##STR21## wherein R 1 and R 2 are independently a hydrogen atom, an alkyl group, an alkoxy group or a halogen atom; Z is a residual group forming a condensed ring together with a benzene ring in the formula (IV); Ar 1 and Ar 2 are independently an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group (these groups may have one or more substituent(s); Ar 3 and Ar 4 are independently a hydrogen atom, an alkyl group, an aryl group, a condensed polycyclic ring group or a heterocyclic ring group these groups may have one or more substituent(s); Ar 3 and Ar 4 are not hydrogen atoms at the same time; Ar 1 and Ar 2 , and/or Ar 3 and Ar 4 may form a ring in combination.

Claim 30

A photosensitive member of claim 25, wherein Ar 1 , Ar 2 , Ar 3 and/or Ar 4 are(is) an electon donating group respectively.

Claim 31

A photosensitive member of claim 25, wherein Ar 3 and Ar 4 are a phenyl group respectively.

Claim 32

A photosensitive member of claim 25, wherein Ar 3 and/or Ar 4 have(has) an electron donating substituent respectively.

Claim 33

A photosensitive member of claim 28, wherein the substituent is a substituted amino group or an alkoxy group.