Flexographic printing unit

Details Flexographic printing unit Flexographic printing unit

1979-05-25

1982-01-12

Fisher, J. Reed

Printing

Rolling contact machines

Rotary

101248, 101351, 101352, B41F 1314, B41F 1332, B41F 1340, B41L 3512

Patent

active

043099459

ABSTRACT:
An improved flexographic type printing unit is provided in which only an ink transfer cylinder, plate cylinder and impression cylinder are needed with the transfer cylinder immersed in an ink fountain and cooperating with an adjustable doctor blade. Bearing traction roll drives and spacing means are utilized and the impression and transfer cylinders are mounted on swinging arms positioned by hydraulic or pneumatic cylinders to obviate the need for machined slides and surfaces and multiple adjustments at opposite ends of these cylinders. An eccentric structure in a freewheeling impression cylinder provides an accurate web thickness adjustment for the unit. A second embodiment of the flexographic printing unit includes a planetary gear drive for changing the registration of the print-to-blank or print-to-print of the plate cylinder as it engages a web.

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patent: 3902418 (1975-09-01), Morishita et al.
patent: 4057014 (1977-11-01), Thomas

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