US3696738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silk screen stencil apparatus and method
Assignee: JOSEPH E PODGOR Inc
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Filing: 1971-02-03
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Granted: 1972-10-10
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Expires: 1991-02-03
Abstract
Abstract Apparatus and method for silk screening a microscopic pattern on a stencil into precise registration with reference indicia previously incorporated upon a substrate. System includes an optical comparator with a reticle which magnifies the images and after superimposing a reference point in the test pattern with the reticle insures precise registration of a reference point on the substrate with respect to patterns imprinted thereafter.
Inventors
- 👤 Howard R Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:11
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/02; G01K5/025; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016; Y; Y10; Y10S; Y10S101/00; Y10S101/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
141 words
A method for silk screening a microscopic pattern on a stencil into precise registration with a reference indicia previously incorporated upon a substrate comprising the steps of (1) mounting the substrate in a jig such that one dimension of the reference indicia is in substantial alignment with a corresponding dimension of the pattern on the silk screen stencil, (2) imprinting a test pattern on the substrate by lowering the stencil into contact with the surface thereof and drawing the squeegee across the pattern, (3) using a magnifying optical comparator having a reticle therein, superimposing a reference point transferred during the test silk screening of the substrate with the reticle of the optical comparator, and (4) orienting subsequent substrates within the jig so that a predetermined point in the reference indicia on the substrate is superimposed as an image upon the reticle.
Claim 2
Independent Claim
141 words
A method for silk screening a microscopic pattern on a stencil into precise registration with a reference indicia previously incorporated upon a substrate comprising the steps of (1) mounting the substrate in a jig such that one dimension of the reference indicia is in substantial alignment with a corresponding dimension of the pattern on the silk screen stencil, (2) imprinting a test pattern on the substrate by lowering the stencil into contact with the surface thereof and drawing the squeegee across the pattern, (3) using a magnifying optical comparator having a reticle therein, superimposing a reference point transferred during the test silk screening of the substrate with the reticle of the optical comparator, and (4) orienting subsequent substrates within the jig so that a predetermined point in the reference indicia on the substrate is superimposed as an image upon the reticle.
Claim 3
Dependent Claim
193 words
Apparatus for silk screening a microscopic pattern upon a substrate in precise registration with reference indicia thereon, comprising: a silk screen including a stencil pattern, a jig for supporting the substrate such that one dimensional axis of the reference indicia is in alignment with a corresponding dimensional axis of the stencil pattern, an optical magnifying device mounted with respect to said jig so as to project an image of the area circumjacent the reference indicia, a reticle in said optical magnifying device including means for adjusting said reticle along an axis perpendicular to the first mentioned axis of the reference indicia, said jig including means to orient said substrate along a second axis perpendicular to the first mentioned axis, and means for moving said silk screen stencil with respect to said jig so as to imprint the substrate with the pattern, whereby orienting the reticle with respect to an image of a reference point within a test pattern imprinted upon a first substrate and then orienting subsequent substrates such that the image of the reference indicia thereon is superimposed upon said reticle will insure precise registration of patterns imprinted on such subsequent substrates.
Claim 4
Dependent Claim
193 words
Apparatus for silk screening a microscopic pattern upon a substrate in precise registration with reference indicia thereon, comprising: a silk screen including a stencil pattern, a jig for supporting the substrate such that one dimensional axis of the reference indicia is in alignment with a corresponding dimensional axis of the stencil pattern, an optical magnifying device mounted with respect to said jig so as to project an image of the area circumjacent the reference indicia, a reticle in said optical magnifying device including means for adjusting said reticle along an axis perpendicular to the first mentioned axis of the reference indicia, said jig including means to orient said substrate along a second axis perpendicular to the first mentioned axis, and means for moving said silk screen stencil with respect to said jig so as to imprint the substrate with the pattern, whereby orienting the reticle with respect to an image of a reference point within a test pattern imprinted upon a first substrate and then orienting subsequent substrates such that the image of the reference indicia thereon is superimposed upon said reticle will insure precise registration of patterns imprinted on such subsequent substrates.
Claim 5
Dependent Claim
14 words
The apparatus of claim 3 wherein said optical magnifying device constitutes an optical comparator.
Claim 6
Dependent Claim
22 words
The apparatus of claim 4 wherein said substrates are cylindrical tubes, and said jig comprises a pair of adjacently mounted parallel rollers.
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |