Patent EP0279147A2 successfully refreshed from Google Patents.
EP0279147A2
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EP
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Silk-screen printing apparatus with optical reading device for detecting the registration marks of a printing support on a printing plane
Assignee: ARGON INDUSTRIE MECCANICHE Srl
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Filing: 1987-04-14
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Granted: —
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Expires: 2007-04-14
Abstract
Abstract The silk-screen printing apparatus with optical reading device for detecting the registration marks (20, 21) of a printing support (3) on a printing plane (2) comprises a feeder element (1) for the printing support (3) which feeds the printing plane supported by a framework and elements for detecting the position of the printing support on the printing plane which support TV cameras (8); means are furthermore provided for the orientation of a printing frame driven by said TV cameras and surfaces (6, 7) for the reflection of the image of the registration marks of the printing support towards said TV cameras.
Inventors
- 👤 Fabio Colapinto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 20:06
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/08; B41F15/0804; B41F15/0813; B41F15/10; B41F15/14; B41F15/16; B41F15/18; B41F15/26; B41F15/34; B41F15/36; B41F33/00; B41F33/0081; H; H05; H05K; H05K1/00; H05K1/02; H05K1/0266; H05K3/00; H05K3/10; H05K3/12; H05K3/1216
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
94 words
Silk-screen printing apparatus with an optical reading device for detecting the registration marks of a printing support on a printing plane comprising: a feeder element for the printing support which feeds a printing plane supported by a framework, elements for detecting the position of said printing support on said printing plane and means for the orientation of a printing frame driven by TV cameras, characterized in that it comprises surfaces (6, 7) for the reflection of the image of the registration marks (20, 21) of said printing support (3) towards said TV cameras (8).
Claim 2
Dependent Claim
94 words
Silk-screen printing apparatus with an optical reading device for detecting the registration marks of a printing support on a printing plane comprising: a feeder element for the printing support which feeds a printing plane supported by a framework, elements for detecting the position of said printing support on said printing plane and means for the orientation of a printing frame driven by TV cameras, characterized in that it comprises surfaces (6, 7) for the reflection of the image of the registration marks (20, 21) of said printing support (3) towards said TV cameras (8).
Claim 3
Dependent Claim
44 words
Apparatus according to claim 1, characterized in that at least one of said reflecting surfaces is supported by at least one small arm (8) slideably associated with at least one supporting arm (10) provided, on an end portion, with a plurality of grooves (11).
Claim 4
Dependent Claim
21 words
Apparatus according to one or more of the preceding claims, characterized in that said TV cameras are associated with said framework.
Claim 5
Dependent Claim
56 words
Apparatus according to claim 2, characterized in that said at least one supporting arm is rotatably associated with a supporting element (12) which is movable in a direction which is substantially perpendicular with respect to said printing plane towards and away from a control element (14) for said supporting arm and rigidly coupled to said framework.
Claim 6
Dependent Claim
23 words
Apparatus according to claim 3, characterized in that the axis of said supporting arm is perpendicular to the axis of said small arm.
Claim 7
Dependent Claim
21 words
Apparatus according to claim 1, characterized in that at least one of said reflecting surfaces is rigidly supported by said framework.
Claim 8
Dependent Claim
24 words
Apparatus according to claim 1, characterized in that it comprises a converging lens (19) supported in a longitudinal guide (22) of said small arm.
Claim 9
Dependent Claim
47 words
Apparatus according to claim 7, characterized in that said converging lens is provided with a greater thickness at the center with respect to the border to have a plane wave emerge on the side opposite to said image of said registration marks which generate a spherical wave.
Claim 10
Dependent Claim
46 words
Apparatus according to claim 1, characterized in that it comprises at least one concave mirror (23) provided with a central missing portion (24) concentric to its border to reflect a beam of light rays generated by at least one light source (25) associated with said framework.
Claim 11
Dependent Claim
22 words
Apparatus according to claim 9, characterized in that said central missing portion is substantially arranged coaxially with respect to said TV cameras.
Claim 12
Dependent Claim
28 words
Apparatus according to claims 4 and 6, characterized in that said reflecting surfaces are respectively inclined by 45° with respect to the plane defined by said printing plane.
Claim 13
Dependent Claim
26 words
Apparatus according to claim 9, characterized in that said concave mirror is substantially inclined by 45° with respect to said plane defined by said printing plane.
Claim 14
Dependent Claim
38 words
Apparatus according to one or more of the preceding claims, characterized in that said light source comprises a parabolic element (26) to direct said beam of light rays in a direction which is substantially parallel to said plane.
Claim 15
Dependent Claim
20 words
Apparatus according to claim 1, characterized in that the axis of said TV cameras is substantially perpendicular to said plane.
Claim 16
Dependent Claim
45 words
Apparatus according to one or more of the preceding claims, characterized in that it comprises at least one optical fiber internally associated with said small arm and provided with its ends respectively proximate to said light source and to the end of said small arm.
Claim 17
Dependent Claim
63 words
Apparatus according to one or more of the preceding claims, characterized in that it comprises a first chamber (30) which accommodates said plane reflecting surface rigidly coupled to said framework, from said first chamber there extending a bellows (31) connected to a second chamber (32) containing said concave mirror and said light source, said second chamber being in communication with said TV camera.
Claim 18
Dependent Claim
58 words
Apparatus according to one or more of the preceding claims, characterized in that said control element (14) comprises a rack (15) which is movable parallel to said printing plane and is operated by a double-action pneumatic piston (16), said rack engaging the teeth of a bush (40) which engages with said grooves to operate rotatably said small arm.
Claim 19
Dependent Claim
30 words
Apparatus according to one or more of the preceding claims, characterized in that said rack comprises, on the opposite side with respect to said pneumatic piston, a shock absorber (17).
Claim 20
Dependent Claim
40 words
Apparatus according to one or more of the preceding claims, characterized in that said framework is provided with an arrestor pin (18) to halt the rotation of said small arm in a preset point in cooperation with said shock absorber.
Claim 21
Dependent Claim
33 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said small arm comprises operating means (44) for the oscillation of at least one of said reflecting surfaces.
Claim 22
Dependent Claim
30 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said oscillating reflecting surface is accommodated in an end portion (42) of said small arm.
Claim 23
Dependent Claim
29 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said end portion is spaced from the axis of rotation of said small arm.
Claim 24
Dependent Claim
26 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said oscillating reflecting surface (7) is defined by a prismatic body.
Claim 25
Dependent Claim
84 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said operating means comprise a first and a second supporting element (45, 46) for said prismatic body, at least one manoeuver (49) means connected to said at least one first supporting element, said manoeuver means being provided with a first pivot (47) for the rotation of said prismatic body provided with its axis coincident with the axis of a second rotation pin (48) extending from said second supporting element.
Claim 26
Dependent Claim
36 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said operating means comprise an element (52) for the positioning of said first and second supporting elements of said prismatic body.
Claim 27
Dependent Claim
46 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said positioning element comprises at least one elastically resilient pin (53) engaging in at least one abutment seat (54) accommodated in at least one of said first and second supporting elements.
Claim 28
Dependent Claim
29 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said end portion is provided with a hole (50) directed towards said printing pin.
Claim 29
Dependent Claim
40 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said small arm is provided with a small plate (51) slideably associated on the surface provided with said hole for the opening and/or closure thereof.
Claim 30
Dependent Claim
31 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said prismatic body rotates substantially through 90° around the axis of said first and second pivot.
Claim 31
Dependent Claim
22 words
Silk-screen printing apparatus according to one or more of the preceding claims, characterized in that said prism can be a double prism.
References Cited (Backward Citations)
No citation records indexed.
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