Apparatus and method for laser engraving thin sheet-like materials
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United States of America Patent
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-
Apr 2, 1996
Grant Date -
N/A
app pub date -
Mar 21, 1994
filing date -
Mar 21, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A laser engraving apparatus (10) and method for engraving a workpiece (15) which includes a mask (11) having at least one image opening (14) extending therethrough. A suction housing (21) is operably coupled to a source of partial vacuum (19) and includes a mouth portion (22) positioned proximate the mask (11) to hold the workpiece (15) and the mask (11) in abutting contact, A laser cutting assembly (24) generates a laser beam (26) which is directed onto the exposed surface (16) under the mask (11) causing engraving thereof. Vaporization or engraving by-products are drawn away from the vaporization surface (16) through the partial vacuum used to hold the mask (11) and workpiece (15) together, The partial vacuum also may be used to cool the mask (11).
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