US3592136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Offset printing apparatus cleaner
Assignee: NRG Manufacturing Ltd
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Filing: 1968-12-31
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Granted: 1971-07-13
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Expires: 1988-12-31
Abstract
Abstract The invention relates to a device for cleaning a printing cylinder and comprising a roller for applying ink solvent to the cylinder and a device for wiping excess solvent around the cylinder to be deposited on a solvent absorbent strip attached to the cylinder. The volatile solvent may subsequently evaporate to leave the strip once more absorbent.
Inventors
- 👤 Thomas G Selman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:11
CPC Classifications
B; B41; B41F; B41F35/00; B41F35/06; B41P; B41P2235/00; B41P2235/10; B41P2235/20; B41P2235/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
Printing apparatus including frame means, a cylinder carried by said frame means, an ink receiving surface formed on said cylinder and means for cleaning ink from the cylinder, such cleaning means comprising: a. means supported by said frame means for applying ink solvent to said cylinder; b. solvent absorbent means attached to said cylinder ink receiving surface; and c. means supported by said frame means for wiping excess solvent circumferentially of said surface towards said solvent absorbent means.
Claim 2
Dependent Claim
78 words
Printing apparatus including frame means, a cylinder carried by said frame means, an ink receiving surface formed on said cylinder and means for cleaning ink from the cylinder, such cleaning means comprising: a. means supported by said frame means for applying ink solvent to said cylinder; b. solvent absorbent means attached to said cylinder ink receiving surface; and c. means supported by said frame means for wiping excess solvent circumferentially of said surface towards said solvent absorbent means.
Claim 3
Dependent Claim
70 words
Printing apparatus according to claim 1, and including: d. part cylindrical demountable blanket means attached to the cylinder and forming said ink receiving surface, said solvent absorbent means being arranged to extend longitudinally of said cylinder along one edge of said blanket means; and e. pivotable support means supported by said frame means and carrying said solvent wiping mean for movement between a solvent wiping position and an inoperative position.
Claim 4
Dependent Claim
61 words
Printing apparatus according to claim 2, and including: f. recessed surface means on said cylinder for receiving the end clamps of said blanket means, and g. an elongated strip of absorbent material within said recessed surface means, constituting said solvent absorbent means and extending longitudinally of the cylinder and having a peripheral extent less than that of said recessed surface means.
Claim 5
Dependent Claim
38 words
Printing apparatus according to claim 3, and including part cylindrical solvent permeable means having the same radius and center of curvature as said blanket means, said absorbent strip being mounted on said solvent permeable means radially inward thereof.
Claim 6
Dependent Claim
32 words
Printing apparatus according to claim 4, wherein said solvent permeable means comprises: h. an elongate plate, and j. passage means extending through said plate in directions radial with respect to the cylinder
Claim 7
Dependent Claim
46 words
Printing apparatus according to claim 2, wherein said wiping means comprises a wiper blade extending parallel to the axis of said cylinder, and wherein the inoperative position of said pivotable means is a position in which said wiper blade is withdrawn from contact with said cylinder.
Claim 8
Dependent Claim
66 words
Printing apparatus according to claim 2, wherein said solvent applying means comprises: k. a roller; l. solvent absorbent surface means on said roller; m. solvent bath means for introducing ink solvent to said absorbent surface means; and n. means for pivotally mounting said roller for movement between a solvent applying position in contact with said cylinder and an inoperative position out of contact with said cylinder.
Claim 9
Dependent Claim
17 words
Printing apparatus according to claim 7, wherein said pivotable support means also carries said solvent wiping means.
Claim 10
Dependent Claim
21 words
Printing apparatus according to claim 7, and including means for rotating the solvent applying roller when in contact with the cylinder.
Claim 11
Dependent Claim
33 words
Printing apparatus according to claim 9, wherein said roller rotating means drives the applying roller for rotation in the same direction of rotation as that of the cylinder in use of the apparatus.
References Cited (Backward Citations)
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |