Method for graving printing forms
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 4, 1990
Grant Date -
N/A
app pub date -
Mar 23, 1981
filing date -
Mar 21, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for graving printing forms using rastered masters by means of a scanning system which can be adjusted in focus. The signal supplied by the scanner after processing in an electronic computer controls a graving system so as to scan rastered originals. The scanning system is placed out of focus and the loss of image information caused by placing it out-of-focus is compensated by means of an electronic out-of-focus mask.
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Family
International Classification(s)
- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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