US5916724A
Expired / Lapsed
US
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Method for recycling a substrate for an organic photosensitive member
Assignee: Minolta Co Ltd
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Filing: 1997-07-21
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Granted: 1999-06-29
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Expires: 2017-07-21
Abstract
Abstract The object of the present invention is to provide a method for recycling a substrate for an organic photosensitive member, which is excellent in environmental properties, economical properties and safety. In order to achieve the above object, the present invention provides a method for recycling a substrate for an organic photosensitive member with a photosensitive layer that contains a binder resin on an electrically conductive substrate, comprising the steps of; steeping the photosensitive member in a separating liquid to swell the photosensitive layer, and rubbing a surface of the photosensitive member with a brush having a pile length of 5-50 mm, a pile diameter of 2.5-30 denier and a pile density of 100-20000 piles/cm 2 .
Inventors
- 👤 Ichirou Sekine
- 👤 Tetsushi Ikoma
- 👤 Makoto Ban
- 👤 Naoki Yoshie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:33
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/005
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
80 words
A method for recycling an electrically conductive substrate for an organic photosensitive member with a photosensitive layer that contains a binder resin on the substrate, comprising the steps of; steeping the photosensitive member in a liquid which can swell the binder resin to swell the photosensitive layer; and rubbing a surface of the photosensitive member with a brush having a pile length of 5-50 mm, a pile diameter of 2.5-30 denier and a pile density of 100-20000 piles/cm 2 .
Claim 2
Independent Claim
80 words
A method for recycling an electrically conductive substrate for an organic photosensitive member with a photosensitive layer that contains a binder resin on the substrate, comprising the steps of; steeping the photosensitive member in a liquid which can swell the binder resin to swell the photosensitive layer; and rubbing a surface of the photosensitive member with a brush having a pile length of 5-50 mm, a pile diameter of 2.5-30 denier and a pile density of 100-20000 piles/cm 2 .
Claim 3
Dependent Claim
16 words
A method of claim 1, in which the swelled photosensitive layer is separated in filmy form.
Claim 4
Dependent Claim
26 words
A method of claim 1, in which the liquid is a mixed solvent comprising a water-soluble organic solvent which can dissolve the binder resin, and water.
Claim 5
Dependent Claim
22 words
A method of claim 3, in which the mixed solvent has a volume ratio of water to the organic solvent of 0.5-10.
Claim 6
Dependent Claim
28 words
A method of claim 3, in which the water-soluble organic solvent is selected from the group consisting of alkylene glycol alkyl ether, alkylene glycol acetate, amide and lactone.
Claim 7
Dependent Claim
68 words
A method of claim 3, in which the water-soluble organic solvent is an organic solvent represented by the formula(I): R.sub.1 O(C.sub.m H.sub.2m O).sub.n R.sub.2 (I) (wherein R 1 is an alkyl group having not more than 4 carbon atoms or CH 3 CO--, R 2 is a hydrogen atom, a methyl group or an ethyl group, m is 2 or 3, and n is an integer of 1-5).
Claim 8
Dependent Claim
16 words
A method of claim 1, in which the brush has a pile length of 20-30 mm.
Claim 9
Dependent Claim
16 words
A method of claim 1, in which the brush has a pile diameter of 5-15 denier.
Claim 10
Dependent Claim
18 words
A method of claim 1, in which the brush has a pile density of 200-5000 piles/cm 2 .
Claim 11
Dependent Claim
25 words
A method of claim 1, in which the substrate is an aluminum substrate or an aluminum substrate with an anodized layer on the surface thereof.
Claim 12
Dependent Claim
23 words
A method of claim 1, further comprising the steps of; washing the rubbed substrate; and forming a photosensitive layer on the washed substrate.
Claim 13
Dependent Claim
23 words
A method of claim 1, further comprising the step of; anti-corrosively treating the rubbed substrate by applying the substrate with a coal oil.
Claim 14
Dependent Claim
15 words
A method of claim 2, further comprising the step of removing the separated photosensitive layer.
Claim 15
Independent Claim
93 words
A method for recycling an electrically conductive substrate for an organic photosensitive member with a charge transporting layer that contains a charge transporting material and a binder resin laminated on a charge generating layer on the substrate, comprising the steps of; steeping the photosensitive member in a liquid which can swell the binder resin to swell the charge transporting layer; and rubbing a surface of the photosensitive member with a brush having a pile length of 5-50 mm, a pile diameter of 2.5-30 denier and a pile density of 100-20000 piles/cm 2 .
Claim 16
Independent Claim
93 words
A method for recycling an electrically conductive substrate for an organic photosensitive member with a charge transporting layer that contains a charge transporting material and a binder resin laminated on a charge generating layer on the substrate, comprising the steps of; steeping the photosensitive member in a liquid which can swell the binder resin to swell the charge transporting layer; and rubbing a surface of the photosensitive member with a brush having a pile length of 5-50 mm, a pile diameter of 2.5-30 denier and a pile density of 100-20000 piles/cm 2 .
Claim 17
Dependent Claim
17 words
A method of claim 14, in which the swelled charge transporting layer is separated in filmy form.
Claim 18
Dependent Claim
26 words
A method of claim 14, in which the liquid is a mixed solvent comprising a water-soluble organic solvent which can dissolve the binder resin, and water.
Claim 19
Dependent Claim
22 words
A method of claim 16, in which the mixed solvent has a volume ratio of water to the organic solvent of 0.5-10.
Claim 20
Dependent Claim
28 words
A method of claim 16, in which the water-soluble organic solvent is selected from the group consisting of alkylene glycol alkyl ether, alkylene glycol acetate, amide and lactone.
Claim 21
Dependent Claim
68 words
A method of claim 16, in which the water-soluble organic solvent is an organic solvent represented by the formula(I): R.sub.1 O(C.sub.m H.sub.2m O).sub.n R.sub.2 (I) (wherein R 1 is an alkyl group having not more than 4 carbon atoms or CH 3 CO--, R 2 is a hydrogen atom, a methyl group or an ethyl group, m is 2 or 3, and n is an integer of 1-5).
Claim 22
Dependent Claim
16 words
A method of claim 14, in which the brush has a pile length of 20-30 mm.
Claim 23
Dependent Claim
16 words
A method of claim 14, in which the brush has a pile diameter of 5-15 denier.
Claim 24
Dependent Claim
18 words
A method of claim 14, in which the brush has a pile density of 200-5000 piles/cm 2 .
Claim 25
Dependent Claim
25 words
A method of claim 14, in which the substrate is an aluminum substrate or an aluminum substrate with an anodized layer on the surface thereof.
Claim 26
Dependent Claim
29 words
A method of claim 14, further comprising the steps of; washing the rubbed substrate; and forming a charge generating layer and a charge transporting layer on the washed substrate.
Claim 27
Dependent Claim
23 words
A method of claim 14, further comprising the step of; anti-corrosively treating the rubbed substrate by applying the substrate with a coal oil.
Claim 28
Dependent Claim
16 words
A method of claim 15, further comprising the step of removing the separated charge transporting layer.
References Cited (Backward Citations)
JPS61209453A
Cited
US5055139A
Cited
US5753601A
Cited
US5470271A
Cited
JPH05257296A
Cited
JPH05281757A
Cited
JPH05341537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-06-28 | 2002-12-28 | 2003-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-06-28 | 2006-12-28 | 2007-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-06-28 | 2010-12-28 | 2011-06-29 | $7700.00 | Window Closed / Lapsed |