Printing – Multicolor – Rotary machines
Patent
1986-11-05
1989-01-17
Fisher, J. Reed
Printing
Multicolor
Rotary machines
101426, B41F 506, B41F 2300, B41F 1302
Patent
active
047981369
ABSTRACT:
A color printing arrangement has a series of printing stations in each of which a different color is imprinted upon predetermined regions of a travelling band to form color images. A device for measuring the width of the band by sensing the edges thereof is located immediately upstream of each printing station. The width of the band at the first printing station is compared with the width at each of the following printing stations. As long as the widths at the latter printing stations are the same as that at the first printing station, the band is allowed to continue travelling unchanged. However, when the width of the band at a printing station downstream of the first printing station differs from the width at the first printing station, the band is operated upon to return the width to its original value. The reason is that a departure from the original width of the band causes the predetermined regions which are to be imprinted to be moved out of alignment with the printing devices in the printing stations. By returning the width to its original value, the alignment of the predetermined regions is restored.
REFERENCES:
patent: 2306607 (1942-12-01), Horton
patent: 2359825 (1944-10-01), Campbell
patent: 2549605 (1951-04-01), Huck
patent: 2674809 (1954-04-01), Meienhofer
patent: 3432672 (1969-03-01), Bessonny et al.
patent: 3570735 (1971-03-01), Kurz
patent: 4233901 (1980-11-01), Mallinson
Litterst Thomas
Tittgemeyer Udo
Fisher J. Reed
Interprint Rotatinsdruk GmbH & Co. KG
Kontler Peter K.
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