Timing device for printing machines
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United States of America Patent
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May 12, 1987
Grant Date -
N/A
app pub date -
Jun 25, 1984
filing date -
Jun 23, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A central timing device for controlling a plurality of working functions of a printing machine, includes a reference pulse generator, assembled to encoder discs connected to a cycle shaft of the printing machine to produce a sequence of angular increment pulses and at least one single synchronizing pulse. The reference pulse generator is connected to a pulse processing circuit which includes a first address coding device for producing binary coded addresses pertaining to angles of rotation of the machine. A second address coding device is coupled to the encoder for angular increments via a timing circuit including an AND-gate and a monostable multivibrator to produce binary coded addresses pertaining to the angle of rotation/rotary speed of the printing machine. The outputs of the first and second address generating devices are connected to addressing inputs of separate PROMs preprogrammed with desired timing signals.
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