Electrophotographic photoreceptor
First Claim
Patent Images
1. An electrophotographic photoreceptor having a photosensitive layer containing a charge generation material and a charge transport material on an electroconductive substrate, wherein the charge transport material has a polarizability α
- of the formula, α
>
130 (Å
3) and a dipole moment P of the formula, P<
1.6 (D).
2 Assignments
0 Petitions
Accused Products
Abstract
An electrophotographic photoreceptor having a photosensitive layer containing a charge generation material and a charge transport material on an electroconductive substrate, wherein the charge transport material has a polarizability α of the formula, α>100 (Å3) and a dipole moment P of the formula, P<1.6 (D).
87 Citations
24 Claims
-
1. An electrophotographic photoreceptor having a photosensitive layer containing a charge generation material and a charge transport material on an electroconductive substrate, wherein the charge transport material has a polarizability α
- of the formula, α
>
130 (Å
3) and a dipole moment P of the formula, P<
1.6 (D). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- of the formula, α
-
13. An electrophotographic photoreceptor having a photosensitive layer containing a charge generation material and a charge transport material on an electroconductive substrate, wherein the charge transport material has a polarizability α
- of a calculated value α
cal of the formula, α
cal>
90 (Å
3) by structure-optimization calculation in accordance with semi-empirical molecular orbital calculation using PM3 parameter (hereinafter simply referred to as "semi-empirical molecular orbital calculation") and a dipole weight. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
- of a calculated value α
-
24. An electrophotographic photoreceptor having a photosensitive layer which is a laminate comprising a charge generation layer containing a charge generating material and a charge transport layer containing a charge transport material and contains an aryl amine compound of the following formula (1) on an electroconductive substrate:
- wherein in the formula (1), each of R1, R2, R3, R4, R5 and R6 is a halogen atom, an alkyl which may have a substituent, an alkoxy group which may have a substituent, an aryl group which may have a substituent or a substituted amino group, and they may be the same or different;
each of k, l, m, n, o and p is zero or an integer of 1 to 4, and when the integer is 2 or more, a plurality of R1 or R6 may the same or different;
X1 is a group of the formula (2),
space="preserve" listing-type="equation">.paren open-st.CR.sub.7 ═
CR.sub.8 .paren close-st..sub.i CR.sub.9 ═
CR.sub.10 R.sub.11 (
2)and each of X2, X3 and X4 is a group of the formula (2'"'"'),
space="preserve" listing-type="equation">.paren open-st.CR.sub.12 ═
CR.sub.13 .paren close-st..sub.h CR.sub.14 ═
CR.sub.15 R.sub.16 ( 2'"'"')(in the formulas (2) and (2'"'"'), is an integer of at least 1, h is zero or an integer of 1 or more, each of R7, R8, R9, R10, R11, R12, R13, R14, R15 and R16 is a hydrogen atom, an alkyl group which may have a substituent, an alkoxy group which may have a substituent, an aryl group which may have a substituent or a heterocyclic group which may have a substituent, and they may the same or different, provided that with respect to the pair of R10 and R11 or the pair of R15 and R16, when one is a hydrogen atom or an alkyl group, the other is an aryl group or a heterocyclic group, or the pair of R10 and R11 or the pair of R15 and R16 may be condensed to form a carbocyclic group or a heterocyclic group, and when i is 2 or more, each of R7 and R8 may be the same or different, and when h is 2 or more, each of R12 and R13 may be the same or different), and they may be respectively the same or different; and
each of a, b, c and d is an integer of 1 or 2.
- wherein in the formula (1), each of R1, R2, R3, R4, R5 and R6 is a halogen atom, an alkyl which may have a substituent, an alkoxy group which may have a substituent, an aryl group which may have a substituent or a substituted amino group, and they may be the same or different;
Specification