Printing – Multicolor – Rotary machines
Patent
1981-11-02
1983-03-15
Eickholt, E. H.
Printing
Multicolor
Rotary machines
101247, 101140, B41F 506, B41F 704
Patent
active
043764134
ABSTRACT:
In a printing press including an intaglio cylinder, an impression cylinder and a blanket cylinder, for the purpose of throwing on and off these cylinders there is provided a control apparatus comprising a first detection switch which produces a selection signal when a rotating radial projection passes by, and a plurality of second detection switches which generate timing signals when passing by a plurality of radially spaced projections. The selection signal is used to select either one of the second selection switches, and the timing signal generated by a selected second detection switch is used to throw on and off the cylinders.
According to this invention it is not necessary to use a number of expensive multistage preset counters which are liable to misoperate due to noise.
REFERENCES:
patent: 3191530 (1965-06-01), Fath et al.
patent: 3296521 (1967-01-01), Wilberger
patent: 3473468 (1969-10-01), Van Deman et al.
patent: 3477367 (1969-11-01), Richards
patent: 3624359 (1971-11-01), Roote
patent: 3921519 (1975-11-01), Zimmer
patent: 3998156 (1976-12-01), Zimmer
patent: 4109574 (1978-08-01), Forster
patent: 4116125 (1978-09-01), Forster et al.
patent: 4240346 (1980-12-01), Landis et al.
patent: 4281595 (1981-08-01), Fujishiro
Eickholt E. H.
Komori Printing Machinery Co. Ltd.
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