US3979317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volatile cleaning solution for photoreceptors
Assignee: Xerox Corp
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Filing: 1975-04-28
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Granted: 1976-09-07
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Expires: 1995-04-28
Abstract
Abstract The photoreceptor cleaning composition is provided which includes a lower alcohol, ultrapure water and a surfactant, 3,5-dimethyl-1-hexyn-3-ol. This cleaning solution is 100% volatile, water-clear, and is found to contain no solids or colloidal matter, in addition to being contaminant- and particulate-free, it is found to leave no detectable residue even if not fully wiped off in a cleaning operation. The most significant property of this photoreceptor cleaning solution is its ability to retard crystallization of the photoreceptor, which has been found to be a major problem with many known photoreceptor cleaning solutions.
Inventors
- 👤 Dominic J. Angelini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:02
CPC Classifications
C; C09; C09D; C09D9/00; C09D9/04
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
67 words
A method of cleaning insulating photoconductive photoreceptor surfaces comprising providing a filmed photoconductive insulating photoreceptor surface, applying a cleaning solution which consists essentially of a lower alcohol, water and 3,5-dimethyl-1-hexyn-3-ol surfactant, with the proviso that the ratio of said alcohol to said water is 30-90 parts of said alcohol per 70-10 parts said water and that said surfactant comprises 0.1-50 parts per 100 parts of said solution.
Claim 2
Independent Claim
67 words
A method of cleaning insulating photoconductive photoreceptor surfaces comprising providing a filmed photoconductive insulating photoreceptor surface, applying a cleaning solution which consists essentially of a lower alcohol, water and 3,5-dimethyl-1-hexyn-3-ol surfactant, with the proviso that the ratio of said alcohol to said water is 30-90 parts of said alcohol per 70-10 parts said water and that said surfactant comprises 0.1-50 parts per 100 parts of said solution.
Claim 3
Dependent Claim
14 words
The method as defined in claim 1 wherein said lower alcohol is ethyl alcohol.
Claim 4
Dependent Claim
21 words
The method as defined in claim 1 wherein said water has a quality of to 10 megohm-cm resistivity and is ultrafiltered.
Claim 5
Dependent Claim
19 words
The process as defined in claim 1 wherein said alcohol consists of ethyl alcohol of 200 proof USP Grade.
Claim 6
Dependent Claim
21 words
The method as defined in claim 1 wherein said alcohol is present in 70-90 parts for 100 parts of total solution.
Claim 7
Dependent Claim
38 words
The method as defined in claim 1 wherein said surfactant is present in a range of from 0.5 parts of surfactant by volume to 100 parts of solution to 5.0 parts of surfactant to 100 parts of solution.
Claim 8
Dependent Claim
29 words
The method as defined in claim 1 wherein said filmed surface is filmed with material selected from the group consisting of toner polymer residue, paper tars and mixtures thereof.
Claim 9
Dependent Claim
14 words
The method as defined in claim 7 wherein said photoconductive insulating surface comprises selenium.
Claim 10
Dependent Claim
38 words
The method of claim 1 wherein said ratio of alcohol to water is 30-10 parts of said water per 70-90 parts of said alcohol and said surfactant comprises 0.5-5.0 parts of surfactant per 100 parts of said solution.
Claim 11
Dependent Claim
20 words
The method of claim 1 wherein said lower alcohol is selected from the group consisting of isopropyl, n-propyl and methanol.
Claim 12
Independent Claim
83 words
A method of cleaning a selenium insulating photoconductive surface comprising providing a selenium surface filmed with material selected from the group consisting of toner polymer residue, paper tars and mixtures thereof, applying a cleaning solution consisting essentially of a lower alcohol, water and 3,5-dimethyl-1-hexyn-3-ol surfactant to said surface, with the proviso that the ratio of said alcohol to said water is 30-90 parts of said alcohol per 70-10 parts water and that said surfactant comprises 0.1-50 parts per 100 parts of said solution.
Claim 13
Independent Claim
83 words
A method of cleaning a selenium insulating photoconductive surface comprising providing a selenium surface filmed with material selected from the group consisting of toner polymer residue, paper tars and mixtures thereof, applying a cleaning solution consisting essentially of a lower alcohol, water and 3,5-dimethyl-1-hexyn-3-ol surfactant to said surface, with the proviso that the ratio of said alcohol to said water is 30-90 parts of said alcohol per 70-10 parts water and that said surfactant comprises 0.1-50 parts per 100 parts of said solution.
Claim 14
Dependent Claim
20 words
The method of claim 11 wherein said lower alcohol is selected from the group consisting of isopropyl, n-propyl and methanol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |