Signal input sheet
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United States of America Patent
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May 2, 1995
Grant Date -
N/A
app pub date -
Feb 26, 1993
filing date -
Feb 29, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A signal input sheet having a cover film made of a soft material at its surface, its repetitive writing durability is improved to obtain a signal input sheet having a good feeling and writing condition, and a high durability. A hard film layer 18 harder than a sheet 10 and cover film 15 is set between the sheet 10 made of a soft material and the cover film 15 located at the upper side and slightly harder than the sheet.
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