Patent US5916724A successfully refreshed from Google Patents.
US5916724A
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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 21:25
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
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US5753601A
Cited
US5470271A
Cited
JPH05257296A
Cited
JPH05281757A
Cited
JPH05341537A
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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 |