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US 5,629,117 AGranted
Electrophotosensitive material
AssigneeMita Industrial Co., Ltd.
InventorsMasato Katsukawa, Masashi Tanaka, Ichiro Yamazato, Yuka Nakamura
Life of this patent
Estimating the term…
Abstract
There is disclosed an electrophotosensitive material using a binding resin of a bisphenol C type, bisphenol Z type, bisphenol Z type containing a substituent or bisphenol C-copolymer type polycarbonate in combination with a hole transferring material of a specific benzidine or phenylenediamine derivative. This photosensitive material is superior in mechanical strength and repeat characteristics and has a high glass transition temperature and a high sensitivity.
Claims9
A single layer photosensitive material comprising a conductive substrate and an organic photosensitive layer provided on the conductive substrate, the organic photosensitive layer comprising a binding resin, an electron transferring material, an electric charge generating material and a hole transferring material,
- wherein the binding resin comprises at least one member selected from the group consisting of a polycarbonate of a repeating unit represented by the formula (1):
- ##STR27## wherein R.sup.A and R.sup.B are the same or different and indicate a hydrogen atom or an alkyl group having 1 to 3 carbon atoms;
- R.sup.C and R.sup.D are the same or different and indicate an alkyl group having 1 to 3 carbon atoms;
- and R.sup.E and R.sup.F are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, a polycarbonate of a repeating unit represented by the formula (2):
- ##STR28## wherein R.sup.G and R.sup.H are the same or different and indicate an alkyl group having 1 to 3 carbon atoms;
- and R.sup.I and R.sup.J are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, a polycarbonate of a repeating unit represented by the formula (3):
- ##STR29## and a polycarbonate as a random copolymer or a block copolymer of a repeating unit represented by the formula (4):
- ##STR30## wherein R.sup.K and R.sup.L are the same or different and indicate a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R.sup.K and R.sup.L may bond each other to form a ring;
- R.sup.M and R.sup.N are the same or different and indicate an alkyl group having 1 to 3 carbon atoms;
- and R.sup.O and R.sup.P are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom and formula (5):
- ##STR31## wherein R.sup.Q and R.sup.R are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or an aryl group which may have a substituent, and R.sup.Q and R.sup.R may bond each other to form a ring;
- and R.sup.S, R.sup.T, R.sup.U, R.sup.V, R.sup.W, R.sup.X, R.sup.Y and R.sup.Z are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, the electron transferring material is selected from the group consisting of the diphenoquinone derivative represented by the formula (6):
- ##STR32## wherein R.sup.37, R.sup.38, R.sup.39 and R.sup.40 are the same or different and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group or an aralkyl group,
- the hole transferring material is at least one member selected from the group consisting of a benzidine derivative represented by the formula (7):
- ##STR33## wherein R.sup.1 and R.sup.2 are the same or different and indicate a hydrogen atom or an alkyl group;
- R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom;
- and a, b, c and d are the same or different and indicate an integer of 0 to 5;
- provided that at least one of a, b, c and d indicates an integer of 2 or more, and c and d indicate an integer other than 0 when a and b indicate 0, simultaneously, a benzidine derivative represented by the formula (8):
- ##STR34## wherein R.sup.7 and R.sup.8 are the same or different and indicate a hydrogen atom or an alkyl group;
- R.sup.9 and R.sup.10 are the same or different and indicate an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom;
- R.sup.11 and R.sup.12 are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom;
- and e, f, g and h are the same or different and indicate an integer of 0 to 5, a benzidine derivative represented by the formula (9):
- ##STR35## wherein R.sup.13, R.sup.14, R.sup.15 and R.sup.16 are the same or different and indicate an alkyl group;
- and R.sup.17, R.sup.18, R.sup.19 and R.sup.20 are the same or different and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom, a benzidine derivative represented by the formula (10):
- ##STR36## wherein R.sup.21 R.sup.22 R.sup.23 and R.sup.24 are the same or different and indicate an alkyl group, and R.sup.25, R.sup.26, R.sup.27 and R.sup.28 are the same or different and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom, an o-phenylenediamine derivative represented by the formula (11):
- ##STR37## wherein R.sup.29, R.sup.30, R.sup.31 and R.sup.32 are the same or different and indicate an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom;
- and q, r, s and t are the same or different and indicate an integer of 1 to 2, and a m-phenylenediamine derivative represented by the formula (12):
- ##STR38## wherein R.sup.33, R.sup.34, R.sup.35 and R.sup.36 are the same or different and indicate an alkyl group, an alkoxy group, an aryl group which may contain a substituent, a halogen atom, an amino group or a N-substituted amino group;
- and u, v, w and x are the same or different and indicate an integer of 0 to 5.
26 more elements
A single layer photosensitive material comprising;
- a binding resin, an electron transferring material, an electric charge generating material and a hole transferring material,
- wherein the binding resin comprises at least one member selected from the group consisting of a polycarbonate of a repeating unit represented by the formula (1):
- ##STR39## wherein R.sup.A and R.sup.B are the same or different and indicate a hydrogen atom or an alkyl group having 1 to 3 carbon atoms;
- R.sup.C and R.sup.D are the same or different and indicate an alkyl group having 1 to 3 carbon atoms;
- and R.sup.E and R.sup.F are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, a polycarbonate of a repeating unit represented by the formula (2):
- ##STR40## wherein R.sup.G and R.sup.H are the same or different and indicate an alkyl group having 1 to 3 carbon atoms;
- and R.sup.I and R.sup.J are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, a polycarbonate of a repeating unit represented by the formula (3):
- ##STR41## and a polycarbonate as a random copolymer or a block copolymer of a repeating unit represented by the formula (4):
- ##STR42## wherein R.sup.K and R.sup.L are the same or different and indicate a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R.sup.K and R.sup.L may bond each other to form a ring;
- R.sup.M and R.sup.N are the same or different and indicate an alkyl group having 1 to 3 carbon atoms;
- and R.sup.O and R.sup.P are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom and formula (5):
- ##STR43## wherein R.sup.Q and R.sup.R are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or an aryl group which may have a substituent, and R.sup.Q and R.sup.R may bond each other to form a ring;
- and R.sup.S, R.sup.T, R.sup.U, R.sup.V, R.sup.W, R.sup.X, R.sup.Y and R.sup.Z are the same or different and indicate a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a halogen atom, the electron transferring material is selected from the group consisting of the diphenoquinone derivative represented by the formula (6):
- ##STR44## wherein R.sup.37, R.sup.38, R.sup.39 and R.sup.40 are the same or different and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group or an aralkyl group,
- the hole transferring material is at least one member selected from the group consisting of a benzidine derivative represented by the formula (7):
- ##STR45## wherein R.sup.1 and R.sup.2 are the same or different and indicate a hydrogen atom or an alkyl group;
- R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom;
- and a, b, c and d are the same or different and indicate an integer of 0 to 5;
- provided that at least one of a, b, c and d indicates an integer of 2 or more, and c and d indicate an integer other than 0 when a and b indicate 0, simultaneously, a benzidine derivative represented by the formula (8):
- ##STR46## wherein R.sup.7 and R.sup.8 are the same or different and indicate a hydrogen atom or an alkyl group;
- R.sup.9 and R.sup.10 are the same or different and indicate an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom;
- R.sup.11 and R.sup.12 are the same or different and indicate an alkyl group, an alkoxy group or a halogen atom;
- and e, f, g and h are the same or different and indicate an integer of 0 to 5, a benzidine derivative represented by the formula (9):
- ##STR47## wherein R.sup.13, R.sup.14, R.sup.15 and R.sup.16 are the same or different and indicate an alkyl group;
- and R.sup.17, R.sup.18, R.sup.19 and R.sup.20 are the same or different and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom, a benzidine derivative represented by the formula (10):
- ##STR48## wherein R.sup.21 R.sup.22 R.sup.23 and R.sup.24 are the same or different and indicate an alkyl group, and R.sup.25, R.sup.26, R.sup.27 and R.sup.28 are the same or different and indicate a hydrogen atom, an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom, an o-phenylenediamine derivative represented by the formula (11):
- ##STR49## wherein R.sup.29, R.sup.30, R.sup.31 and R.sup.32 are the same or different and indicate an alkyl group, an alkoxy group, an aryl group which may contain a substituent, or a halogen atom;
- and q, r, s and t are the same or different and indicate an integer of 1 to 2, and a m-phenylenediamine derivative represented by the formula (12):
- ##STR50## wherein R.sup.33, R.sup.34, R.sup.35 and R.sup.36 are the same or different and indicate an alkyl group, an alkoxy group, an aryl group which may contain a substituent, a halogen atom, an amino group or a N-substituted amino group;
- and u, v, w and x are the same or different and indicate an integer of 0 to 5.
27 more elements
Dependencies are inferred from the claim text.