US4993320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inking roller and method for the production thereof
Assignee: Morgan Advanced Materials PLC
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Filing: 1989-07-05
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Granted: 1991-02-19
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Expires: 2009-07-05
Abstract
Abstract In a method for producing an inking roller in the form of a screen roller for an offset inking mechanism or similar ink applicator, during a scraping process a doctor blade slides over the surface of webs which define a screen system. A metal and/or hard ceramic layer, is applied to the roller cylinder, and a laser beam is used to burn a pattern into the abrasion-resistant, hydrophilic surface of the metal and/or ceramic layer. Hydrophobic lining material at least partly covers the walls of the depressions. A plurality of cells for receiving ink or the like are formed in the lining material of the fillable depressions and the arrangement and structure of the cells are independent of the arrangement and structure of the depressions.
Inventors
- 👤 Hans-H. Kochsmeier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:11
CPC Classifications
B; B41; B41N; B41N7/00; B41N7/06; B41N2207/00; B41N2207/02; B41N2207/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49544; Y10T29/4956; Y10T29/49563
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
109 words
A method for the production of an inking roller for an inking mechanism comprising the steps of: (a) applying an outer abrasion-resistant layer to a dynamically balanced roller cylinder; (b) engraving a pattern in the abrasion-resistant layer by laser beam to define a first surface screen system, the pattern leaving upstanding webs between exposed depressions; (c) filling the engraved depressions substantially completely with hydrophobic lining material; (d) partially removing the lining material until the webs are exposed; and (e) forming a plurality of cells in the lining material, the cells being independent of the depressions as regards arrangement and structure thereof, for receiving ink therein for a printing process.
Claim 2
Independent Claim
109 words
A method for the production of an inking roller for an inking mechanism comprising the steps of: (a) applying an outer abrasion-resistant layer to a dynamically balanced roller cylinder; (b) engraving a pattern in the abrasion-resistant layer by laser beam to define a first surface screen system, the pattern leaving upstanding webs between exposed depressions; (c) filling the engraved depressions substantially completely with hydrophobic lining material; (d) partially removing the lining material until the webs are exposed; and (e) forming a plurality of cells in the lining material, the cells being independent of the depressions as regards arrangement and structure thereof, for receiving ink therein for a printing process.
Claim 3
Dependent Claim
28 words
The method of claim 1, wherein the cell forming step is carried out by means of an etching process so as to provide a second surface screen system.
Claim 4
Dependent Claim
22 words
The method of claim 1, characterized in that the abrasion-resistant, ayer is applied to the roller cylinder by a plasma spraying process.
Claim 5
Dependent Claim
13 words
The method of claim 1, a cell forming step comprises an engraving process.
Claim 6
Independent Claim
65 words
An apparatus for transferring ink, comprising a dynamically balanced roller cylinder, a ceramic layer applied to its surface and having a plurality of depressions formed in the surface thereof and defining between them first webs; a layer of hydrophobic lining material at least partially filling the depressions, the layer of hydrophobic material having a plurality of cells formed therein, the cells defining second webs therebetween.
Claim 7
Independent Claim
65 words
An apparatus for transferring ink, comprising a dynamically balanced roller cylinder, a ceramic layer applied to its surface and having a plurality of depressions formed in the surface thereof and defining between them first webs; a layer of hydrophobic lining material at least partially filling the depressions, the layer of hydrophobic material having a plurality of cells formed therein, the cells defining second webs therebetween.
Claim 8
Dependent Claim
18 words
An apparatus according to claim 5, characterized in that the hydrophobic lining material of the depressions comprises copper.
Claim 9
Dependent Claim
33 words
The apparatus of claim 5, characterized in that the number of the cells per unit distance on the roller surface is an integral multiple of the number of depressions in said unit distance.
Claim 10
Dependent Claim
31 words
The apparatus of claim 5, characterized in that the depressions are defined by engraving and that the cells are defined by engraving which are finer than the engravings of the depressions.
Claim 11
Dependent Claim
24 words
An apparatus according to claim 5 wherein the arrangement and structure of the cells is independent of the arrangement and structure of the depressions.
Claim 12
Dependent Claim
37 words
Apparatus according to one of the claims 5 to 9, characterized in that the surface of the apparatus is constructed and arranged in such a way that no moire pattern is formed thereby on a print substrate.
Claim 13
Dependent Claim
15 words
The apparatus of claim 5, characterized in that the roller cylinder is formed of metal.
Claim 14
Independent Claim
30 words
An apparatus according to one of the claims 5 to 8, characterized in that the depressions pass completely through the ceramic layer and the hydrophobic liner contacts the roller cylinder.
Claim 15
Dependent Claim
23 words
The apparatus of claim 5, characterized in that the first and second webs have substantially the same height at the outermost surface thereof.
Claim 16
Dependent Claim
25 words
The apparatus of claim 5, characterized in that the maximum height of the first webs is greater than the maximum height of the second webs.
Claim 17
Dependent Claim
24 words
The apparatus of claim 5, characterized in that the maximum height of the first webs virtually equals the maximum height of the second webs.
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) | 1994-02-18 | 1994-08-20 | 1995-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-18 | 1998-08-20 | 1999-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-18 | 2002-08-20 | 2003-02-19 | $7700.00 | Window Closed / Lapsed |