US3981269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixing device for electrophotographic duplicating machines
Assignee: Fujifilm Business Innovation Corp
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Filing: 1975-02-03
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Granted: 1976-09-21
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Expires: 1995-02-03
Abstract
Abstract A fixing device for use in an electrophotographic duplicating machine, the fixing device comprising heat rollers through which is fed a copy medium supporting a toner image, the heat rollers fixing the toner image to the support medium, a feed member for feeding an offset preventive solution to at least the surface of the image-side heat roller, a transfer member for transferring the offset preventive solution to the feed member, a feed roller and an offset preventive solution reservoir for feeding the offset preventive solution to the transfer member, a blade for wiping off viscous material deposited on the surface of the image-side heat roller, and a moisture absorbent member for preventing flow of viscous material wipe by the blade, the moisture absorbent member having a base portion interposed between the transfer member and the feed member.
Inventors
- 👤 Kenichi Watahiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2017; G03G15/2025
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
206 words
A fixing device for use in electrophotographic copying machine, said fixing device comprising rollers through which is fed a copy medium supporting a toner image, one of said rollers being an image-side heat roller for fixing said toner image to support medium, said one roller having a substantially vertical imaginary plane extending through the axis thereof; means for rotating said one roller in a predetermined direction; feed means for applying an offset preventing solution to at least the surface of the image-side heat roller, said feed means being disposed on one side of said plane; a blade disposed in front of said feed means in the direction of rotation of said one roller and on the side of said plane opposite said one side, said blade wiping viscous material deposited on the surface of said image-side heat roller to thereby prevent said viscous material from reaching said feed means; moisture absorbent means disposed in front of said blade in the direction of rotation of said one roller, said moisture absorbent means preventing flow around said image-side roller of viscous material wiped by said blade and being disposed adjacent to and slightly spaced from said image-side roller and having a portion in contact with said feed means.
Claim 2
Dependent Claim
206 words
A fixing device for use in electrophotographic copying machine, said fixing device comprising rollers through which is fed a copy medium supporting a toner image, one of said rollers being an image-side heat roller for fixing said toner image to support medium, said one roller having a substantially vertical imaginary plane extending through the axis thereof; means for rotating said one roller in a predetermined direction; feed means for applying an offset preventing solution to at least the surface of the image-side heat roller, said feed means being disposed on one side of said plane; a blade disposed in front of said feed means in the direction of rotation of said one roller and on the side of said plane opposite said one side, said blade wiping viscous material deposited on the surface of said image-side heat roller to thereby prevent said viscous material from reaching said feed means; moisture absorbent means disposed in front of said blade in the direction of rotation of said one roller, said moisture absorbent means preventing flow around said image-side roller of viscous material wiped by said blade and being disposed adjacent to and slightly spaced from said image-side roller and having a portion in contact with said feed means.
Claim 3
Dependent Claim
47 words
A fixing device as in claim 1 wherein said feed means includes a moisture absorbent feed member in contact with said image-side roller for applying said offset preventing solution; a reservoir of said solution; and moisture absorbent transfer means for transferring said solution to said feed roller.
Claim 4
Dependent Claim
36 words
A fixing device as in claim 2 where said portion of said moisture absorbent means for preventing flow around said image-side roller is interposed between said moisture absorbent feed member and said moisture absorbent transfer means.
Claim 5
Dependent Claim
222 words
A fixing device for use in an electrophotographic duplicating machine, said fixing device comprising rollers through which is fed a copy medium supporting a toner image, one of said heat rollers being an image-side heat roller for fixing said toner image to said support medium, said one roller having a substantially vertical imaginary plane extending through the axis thereof, means for rotating said one roller in a predetermined direction; a feed member for feeding an offset preventive solution to at least the surface of the image-side heat roller, said feed means being disposed on one side of said plane, a transfer member for transferring the offset preventive solution to said feed member, a feed roller and an offset preventive solution reservoir for feeding the offset preventive solution to said transfer member, a blade disposed in front of said feed means in the direction of rotation of said one roller and on the side of said plane opposite said one side, said blade wiping off viscous material deposited on the surface of said image-side heat roller, and a moisture absorbent member disposed in front of said blade in the direction of rotation of said one roller, said moisture absorbent means preventing flow of viscous material wiped by said blade and having a base portion interposed between said transfer member and said feed member.
Claim 6
Dependent Claim
222 words
A fixing device for use in an electrophotographic duplicating machine, said fixing device comprising rollers through which is fed a copy medium supporting a toner image, one of said heat rollers being an image-side heat roller for fixing said toner image to said support medium, said one roller having a substantially vertical imaginary plane extending through the axis thereof, means for rotating said one roller in a predetermined direction; a feed member for feeding an offset preventive solution to at least the surface of the image-side heat roller, said feed means being disposed on one side of said plane, a transfer member for transferring the offset preventive solution to said feed member, a feed roller and an offset preventive solution reservoir for feeding the offset preventive solution to said transfer member, a blade disposed in front of said feed means in the direction of rotation of said one roller and on the side of said plane opposite said one side, said blade wiping off viscous material deposited on the surface of said image-side heat roller, and a moisture absorbent member disposed in front of said blade in the direction of rotation of said one roller, said moisture absorbent means preventing flow of viscous material wiped by said blade and having a base portion interposed between said transfer member and said feed member.
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) | 1979-09-21 | 1980-03-22 | 1980-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-21 | 1984-03-22 | 1984-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-21 | 1988-03-22 | 1988-09-21 | $7700.00 | Window Closed / Lapsed |