Patent US2887401A successfully refreshed from Google Patents.
Patent US4776271A successfully refreshed from Google Patents.
US4776271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silk-screen printing method using predistorted second screen
Assignee: Nokia Deutschland GmbH
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Filing: 1986-05-06
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Granted: 1988-10-11
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Expires: 2006-05-06
Abstract
Abstract During silk-screen printing, the stencil (3) is stretched as a result of the pressure exerted by the squeeges (6) This results in a distorted pattern on the material (4) to be printed. To eliminate this error, the design (7') in the stencil (3) is predistorted in such a way that a distortion-free printed pattern (8') is obtained.
Inventors
- 👤 Michael Schlipf
- 👤 Kurt M. Tischer
- 👤 Klaus-Peter Voigt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:07
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/10; H05K3/12; H05K3/1216; H05K3/1225; B; B41; B41C; B41C1/00; B41C1/14; B41F; B41F15/00; B41F15/14; B41F15/34; B41F15/36; G; G03; G03F; G03F7/00; G03F7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A method of silk screening an undistorted design on an object to be printed by means of a squeegee and a stencil, said method comprising: (a) perforating a first stencil with an undistorted design; (b) using said first stencil in combination with a conventional silk-screen printing apparatus to print said design on said object; (c) measuring the distortion error between said undistorted design perforated in said first stencil in step (a) and the distorted design printed on said object in step (b); (d) perforating a second stencil with a predistorted design having a distortion error complementary to that measured in step (c), and (e) utilizing said second stencil and said squeegee to print an undistorted design on said object
Claim 2
Independent Claim
119 words
A method of silk screening an undistorted design on an object to be printed by means of a squeegee and a stencil, said method comprising: (a) perforating a first stencil with an undistorted design; (b) using said first stencil in combination with a conventional silk-screen printing apparatus to print said design on said object; (c) measuring the distortion error between said undistorted design perforated in said first stencil in step (a) and the distorted design printed on said object in step (b); (d) perforating a second stencil with a predistorted design having a distortion error complementary to that measured in step (c), and (e) utilizing said second stencil and said squeegee to print an undistorted design on said object
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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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |