Patent EP0137569A2 successfully refreshed from Google Patents.
EP0137569A2
Expired / Lapsed
EP
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Screen printing device
Assignee: Alcatel Lucent NV
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Filing: 1984-10-06
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Granted: —
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Expires: 2004-10-06
Abstract
Abstract Screen printing device including a work table (1) having a printing position (2), means (4) on this work table for holding a substrate (3) in this printing position, a holder for a screen provided with a mask, a microscope, a template (70) means (4) for adjusting the relative position of the screen holder, the microscope and the work table having holes (14-10) with associated illumination means (23-24) for simultaneously illuminating corresponding reference portions (75-78; 47-50) of the mask and the template.
Inventors
- 👤 Camiel Delphyna Edmond Cleemput
- 👤 Hedwig Leonce Zulma Coussement
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:10
CPC Classifications
B; B41; B41F; B41F15/00; H; H05; H05K; H05K3/00; H05K3/10; H05K3/12; H05K3/1216; B41F15/08; B41F15/0804; B41F15/14; B41F15/16; Y; Y10; Y10S; Y10S101/00; Y10S101/36
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
148 words
Screen printing device including a work table (1) having a printing position (2), means on said work table for holding an object, e.g. a substrate, in said printing position, a holder for a screen provided with a mask, a microscope and means for adjusting the relative positions of said table, said screen holder and said microscope, characterized in that it further includes a template (70) with reference portions (75-78) corresponding to reference portions (47-50) of said mask (45), and that said work table (1) has at least one hole (14-16) with associated illumination means (23-24) to simultaneously illuminate said corresponding reference portions of said mask (45) and of said template (70) held in said printing position (2) by said holding means (4) in order to be able to adjust, with the help of said adjustment means, the relative position of said reference portions when viewed through said microscope.
Claim 2
Dependent Claim
148 words
Screen printing device including a work table (1) having a printing position (2), means on said work table for holding an object, e.g. a substrate, in said printing position, a holder for a screen provided with a mask, a microscope and means for adjusting the relative positions of said table, said screen holder and said microscope, characterized in that it further includes a template (70) with reference portions (75-78) corresponding to reference portions (47-50) of said mask (45), and that said work table (1) has at least one hole (14-16) with associated illumination means (23-24) to simultaneously illuminate said corresponding reference portions of said mask (45) and of said template (70) held in said printing position (2) by said holding means (4) in order to be able to adjust, with the help of said adjustment means, the relative position of said reference portions when viewed through said microscope.
Claim 3
Dependent Claim
53 words
Screen printing device according to claim 1, characterized in that said template (70) has a body (71) with shape and size identical to those of said object (3) and another part (72-74) provided with said reference portions (75-78), said holding means (4) being able to hold said body (71) in said printing position.
Claim 4
Dependent Claim
66 words
Screen printing device according to claim 1, characterized in that each (47) of said reference portions (47-50) of said mask (45) comprises a plurality of staircase-shaped portions (52, 54, 56; 53, 55, 57) with aligned corresponding rectilinear strips (52, 53; 54, 55; 56, 57), first (52, 53) and second ones (54, 55; 56, 57) of which are located at predetermined distances (Dl, D2) from each other.
Claim 5
Dependent Claim
49 words
Screen printing device according to claim 3, characterized in that said predetermined distance (Dl, D 2) is such that at least one wire (87) of said screen is located in the area delimited by said aligned first strips (52, 53) and said aligned second strips (54, 55; 56, 57).
Claim 6
Dependent Claim
42 words
Screen printing device according to claim 4, characterized in that said distance is equal to the value 2d + z O wherein d is the thickness of said screen wire and O is the distance between immediately adjacent screen wires (87, 88).
Claim 7
Dependent Claim
39 words
Screen printing device according to claim 3, characterized in that said reference portions (47-50) are arranged along the sides of a right-angled triangle and outside the mask (46) of an electrical circuit to be' printed on said object (3).
Claim 8
Dependent Claim
27 words
Screen printing device according to claim 6, characterized in that one side (47, 48) of said right-angled triangle coincides with an edge of said circuit mask (46).
Claim 9
Dependent Claim
57 words
Screen printing device according to claim 1, characterized in that each of said reference portions (75) of said template (70) comprises a plurality of staircase-shaped portions (79, 81; 80, 82) with aligned corresponding rectilinear strips (79, 80; 81, 82), first (79, 80) and second ones (81, 82) of which are located at predetermined distances from each other.
Claim 10
Dependent Claim
30 words
Screen printing device according to claims 2 and 8, characterized in that said reference portions (75-78) are located along the sides of a right-angled triangle and outside said body (71).
Claim 11
Dependent Claim
26 words
Screen printing device according to claim 9, characterized in that one side (75, 77) of said right-angled triangle coincides with an edge of said body (71).
Claim 12
Dependent Claim
97 words
ll. Screen printing device according to claims 6 and 9, characterized in that said work table (1) has three said holes (14, 15, 16) which are disposed at the corner points of a right-angled triangle corresponding to said right-angled triangles of said mask (45) and of said template (70) in such a way that when said template (70) and said mask (45) are located in said printing position (2) on said work table (1) said reference portions of said template and of said mask are located above said holes and illuminated by said illumination means (23, 24).
Claim 13
Dependent Claim
23 words
Screen printing device according to claim 11, characterized ir that said illumination means (23, 24) are mounted below said holes (14, 15, 16).
Claim 14
Dependent Claim
24 words
Screen printing device according to claim 12, characterized in that, light guides (20, 21, 22) are mounted in said holes (14, 15, 16) .
Claim 15
Dependent Claim
88 words
Screen printing device according to claim 11, characterized in that said printing position is delimited by three stationary abutments (5, 6, 7) and by a movable abutment (8) which forms part of said holding means (4), said stationary abutments (5, 6, 7) being disposed along the sides of a right-angled triangle corresponding to the right-angled triangle delimited by said holes (14, 15, 16) and said holding means (4) being able to push said object (3) or said template (70) into contact with said stationary abutments (5, 6, 7).
Claim 16
Dependent Claim
146 words
Screen printing device according to claim 14, characterized in that said movable abutment (8) is provided at the end of a first arm of an L-shaped lever (30) which is pivoted (42) in said work table (1) and whose second arm is controlled by a spring (31) and by a control rod (27) which is able to pivot said lever (30) against the action of said spring (31). Screen printing device including a work table having a printing position, means on this work table for holding an object, e.g. a substrate, in this printing position, a holder for a screen provided with a mask, a microscope, means for adjusting the relative position of this table, this screen holder and this microscope and a template, wherein the work table has holes with associated illumination means to simultaneously illuminate corresponding reference portions of this mask and this template.
References Cited (Backward Citations)
No citation records indexed.
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