Web printing press

Details Web printing press Web printing press

1979-01-29

1980-12-23

Fisher, J. Reed

Printing

Planographic

Multicolor

101143, 101148, 101177, 101180, 101181, 101182, 101225, 101351, 271 5, B41F 704, B41F 712, B41F 740, B41F 1336, B41F 3130, B41F 1354

Patent

active

042403464

ABSTRACT:
An offset lithographic web printing press capable of printing a series of relatively short runs without interruption and with minimum waste of web material. The press includes a plurality of printing units. During a given run, some of the printing units are in a printing mode, while others are in a nonprinting or thrown-off mode. The web moves freely through the units which are thrown-off while those units are made ready for a succeeding run. Each unit includes a motor which has adequate capacity to drive such auxiliary equipment as a web infeed and folder, in addition to the unit, itself. Each unit motor may be clutched into a common drive line passing through all the units in order to drive the infeed and folder. Each printing unit also includes apparatus for throwing the printing cylinders of the unit to and from the web, and for changing the attitude of the web as it passes through the unit. A control system is included which controls the throw-off of the engaged printing units at the end of a preset count and also controls start-up of the units which are to be engaged in the next run. The control system includes a circuit for selecting the printing mode of the units so that any one or all of the printing units may be used for printing a given job.

REFERENCES:
patent: 1654058 (1927-12-01), Smith
patent: 2149028 (1939-02-01), Meisel
patent: 2859691 (1958-11-01), Heller
patent: 3139025 (1964-06-01), Chambon
patent: 3221651 (1965-12-01), Tagliasacchi
patent: 3527164 (1970-09-01), Bulk
patent: 3527165 (1970-09-01), Harless
patent: 3664261 (1972-05-01), Dahlgren

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