Patent EP0287700A2 successfully refreshed from Google Patents.
EP0287700A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Photosensitive members for use in electrophotography
Assignee: Individual
•
Filing: 1987-08-06
•
Granted: —
•
Expires: 2007-08-06
Abstract
Abstract A photosensitive member for use in electrophotography is manufactured by preparing a coating material by mixing together a powder of photosensitive material, for example a or ε phthalocyanine, and a binder of a self-hardening type resin, for example a polyester resin, applying the coating material on the surface of a hollow metal cylinder (7) to form a photosensitive layer (6), smoothing the surface of the photosensitive layer by applying a mechanical force, and hardening the photosensitive layer by heat or ultraviolet ray. Since the surface of the photosensitive layer is smooth, the toner utilized to develop a latent image can be completely removed after transfer printing a powder image onto copying paper. Moreover, since the photosensitive layer has a sufficiently high hardness its operating life is increased.
Inventors
- 👤 Koichi Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:54
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0525
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
66 words
A photosensitive member for use in electrophotography comprising: an electroconductive substrate (7); and a photosensitive layer (6) coated on said substrate; said photosensitive layer (6) being made of a mixture of a binder of a self-hardening type resin and a powder of a photosensitive material; said mixture being coated on said electroconductive substrate (7), and said photosensitive layer (6) being smoothed mechanically and caused to self-harden.
Claim 2
Dependent Claim
66 words
A photosensitive member for use in electrophotography comprising: an electroconductive substrate (7); and a photosensitive layer (6) coated on said substrate; said photosensitive layer (6) being made of a mixture of a binder of a self-hardening type resin and a powder of a photosensitive material; said mixture being coated on said electroconductive substrate (7), and said photosensitive layer (6) being smoothed mechanically and caused to self-harden.
Claim 3
Dependent Claim
19 words
The photosensitive member according to claim 1 wherein said electroconductive substrate takes the form of a metal cylinder (7).
Claim 4
Dependent Claim
31 words
The photosensitive member according to claim l wherein said photosensitive material is selected from the group consisting of a phthalocyanine, ε phthalocyanine, a mixture thereof, CdS, CdSe, ZnO, ZnS and PbO.
Claim 5
Dependent Claim
28 words
The photosensitive member according to claim 1 wherein said self-hardening type resin is selected from the group consisting of polyester, epoxy, melamine and acryl resins, and mixtures thereof.
Claim 6
Dependent Claim
23 words
The photosensitive member according to claim 4 wherein said self-hardening type resin hardens when heated, irradiated with ultraviolet ray or dried in air.
Claim 7
Independent Claim
72 words
A method of manufacturing a photosensitive member for use in electrophotography comprising the steps of: preparing a coating material by mixing together a powder of photosensitive material and a binder consisting of a self-hardening type resin; applying said coating material onto a surface of an electroconductive substrate (7) to form a photosensitive layer (6); mechanically smoothing a surface of said photosensitive layer; and hardening said photosensitive layer thereby completing said photosensitive member.
Claim 8
Independent Claim
72 words
A method of manufacturing a photosensitive member for use in electrophotography comprising the steps of: preparing a coating material by mixing together a powder of photosensitive material and a binder consisting of a self-hardening type resin; applying said coating material onto a surface of an electroconductive substrate (7) to form a photosensitive layer (6); mechanically smoothing a surface of said photosensitive layer; and hardening said photosensitive layer thereby completing said photosensitive member.
Claim 9
Dependent Claim
39 words
The method according to claim 6 wherein said substrate is a hollow metal cylinder (7) and said hollow metal cylinder formed with said photosensitive layer (6) is interposed between a pair of rollers (1, 2) which are pressed together.
Claim 10
Dependent Claim
39 words
The method according to claim 7 wherein one of said rollers (1) is urged against the other roller (2) by a fluid pressure piston-cylinder assembly (8) and moved away from said other roller (2) by returning spring means (9).
Claim 11
Dependent Claim
31 words
The method according to claim 6 wherein said photosensitive material is selected from the group consisting of a phthalocyanine, ε phthalocyanine, a mixture thereof, CdS, CdSe, ZnO , ZnS and PbO.
Claim 12
Dependent Claim
27 words
The method according to claim 6 wherein said self-hardening type resin is selected from the group consisting of polyester, epoxy, melamine and acryl resins and mixtures thereof.
Claim 13
Dependent Claim
23 words
The method accroding to claim 6 wherein said self-hardening type resin hardens when heated or irradiated with ultraviolet ray or dried in air.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.