US3858287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impression cylinder
Assignee: Individual
•
Filing: 1973-03-06
•
Granted: 1975-01-07
•
Expires: 1993-03-06
Abstract
Abstract A printing cylinder for particularly flexo-printing machines and indirect photogravure printing machines, in which either end of the sleeve is provided with an adjusting mechanism which is in engagement with the shaft. The sleeve is mounted with such clearance on the shaft that during rotation, the shaft cannot come into contact with the internal surface of the sleeve. Preferably each adjusting mechanism consists of three adjusting screws. Preferably the sleeve consists of an inner tubular cylinder of steel or aluminium and an outer tubular cylinder of foamed polyurethane. The printing cylinder produces a sharp imprint of high quality at high peripheral speeds, e.g., 200 meters/minute of the printing cylinder.
Inventors
- 👤 Albert B Christoffersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:50
CPC Classifications
B; B41; B41F; B41F13/00; B41F13/08; B41F13/18; B41F13/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
101 words
A printing cylinder for printing machines, particularly flexo-printing machines and indirect photogravure printing machines, comprising a block-supporting sleeve mounted on a circular shaft wherein one end of the sleeve is provided with adjusting means which is in engagement with the shaft the sleeve is mounted with such clearance on the shaft that during rotation, the shaft cannot come into contact with the internal surface of the sleeve, said adjusting means consisting of an uneven number of adjustable fastening means, said fastening means being adapted for adjustment of the center line of the sleeve relative to the center line of the shaft.
Claim 2
Dependent Claim
101 words
A printing cylinder for printing machines, particularly flexo-printing machines and indirect photogravure printing machines, comprising a block-supporting sleeve mounted on a circular shaft wherein one end of the sleeve is provided with adjusting means which is in engagement with the shaft the sleeve is mounted with such clearance on the shaft that during rotation, the shaft cannot come into contact with the internal surface of the sleeve, said adjusting means consisting of an uneven number of adjustable fastening means, said fastening means being adapted for adjustment of the center line of the sleeve relative to the center line of the shaft.
Claim 3
Dependent Claim
54 words
The cylinder according to claim 1 wherein the fastening means are three adjusting screws disposed in a plane at right angles to the shaft of the sleeve, said screws being adjustably screwed into threaded holes extending radially through the sleeve with a 120* displacement relatively to each other along the peripHery of the shaft.
Claim 4
Dependent Claim
26 words
The cylinder according to claim 1 wherein the sleeve comprises an inner tubular cylinder made of metal metal and an outer tubular cylinder made of plastic.
Claim 5
Dependent Claim
15 words
The cylinder according to claim 3, wherein the inner tubular cylinder is made of steel.
Claim 6
Dependent Claim
15 words
The cylinder according to claim 3, wherein the inner tubular cylinder is made of aluminum.
Claim 7
Dependent Claim
20 words
The cylinder according to claim 3 wherein the outer tubular cylinder is made from foamed polyurethane or similar foamed material.
Claim 8
Dependent Claim
26 words
The cylinder according to claim 6, wherein the outer surface of the outer tubular cylinder is provided with a layer of copper, zinc, magnesium, or aluminum.
Claim 9
Dependent Claim
36 words
The cylinder according to claim 6, wherein the outer surface of the outer tubular cylinder is provided with a layer of a light-sensitive material in which the molecular structure has been made sensitive to ultra-violet light.
Claim 10
Dependent Claim
19 words
The cylinder according to claim 8 wherein the layer of said light sensitive material is made of a polymer.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |