Method for assembling signatures
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United States of America Patent
Stats
-
Mar 2, 1999
Grant Date -
N/A
app pub date -
Mar 20, 1997
filing date -
Apr 24, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for electronic assembly of signatures where individual printed pages are assembled to form a signature. Contents of the printed pages to be assembled are described in a page description language. Contone Contone maps in which the printed pages are described pixel-by-pixel and line-by-line in the form of gray scale values are generated for the individual printed pages by interpretation of page descriptions in at least one interpreter. The contone maps of the individual printed pages are assembled to form an overall contone map in a raster generator such that lines of the overall contone map of the signature are composed from individual lines of the contone maps of the printed pages taking predetermined parameters into consideration. The overall contone map of the signature is converted into a screened bit map in the raster generator. The signature is recorded pixel-by-pixel and line-by-line on a recording medium based on the bit map.
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