Impact printer with yielding platen
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United States of America Patent
Stats
-
Mar 9, 1999
Grant Date -
N/A
app pub date -
Mar 12, 1997
filing date -
Jul 12, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An impact printer (30) comprises a printhead (31) traversing along a guide for printing a line on a document (32) of thickness S, and is provided with contrast means for supporting the document (32) against the head (31) and for contrasting the impact force exerted by the latter against the document. The printhead (31) bears a spacing roller (34) which causes the contrast means to yield in order to compensate for thickness S, which varies according to the document (32), and thus maintain the distance D between the head (31) and the document (32) constant. The contrast means comprise a flexible platen (33) attached yieldingly at the ends, of length at least equal to or greater than that of the print line and having a variable section frame so that the pressure generated between the platen (33) and the roller (34) is substantially constant all along the print line.
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Cited Art Landscape
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