Modular offset lithographic printing tower

Details Modular offset lithographic printing tower Modular offset lithographic printing tower

B - Operations, Transporting

41

F

101/59

B41F 7/02 (2006.01) B41F 7/12 (2006.01) B41F 13/00 (2006.01) B41F 31/30 (2006.01) B41L 17/08 (2006.01)

Patent

CA 1101727

MODULAR OFFSET LITHOGRAPHIC PRINTING TOWER Abstract of the Disclosure A low cost, variable, modular, web-fed offset lithographic printing unit or tower is disclosed which allows significant economies in production and maintenance, and can be easily and quickly modified in the field using interchange- able modules so as to vary printing characteris- tics. The printing tower, in the straight-through variable perfector form thereof, is preferably provided with a printer module having upper and lower web-printing blanket rollers; in addition, the tower has corresponding upper and lower inker modules for the respective blanket rollers. The upper inker module is mounted for pivotal movement about a horizontal axis so that it can be shifted between a normal inking position over the printer module to a retracted, printer module-clearing position allowing removal and/or replacement of the printer module by essentially vertical shift- ing of the printer module. By virtue of modular construction, the supporting sidewalls for the separate tower modules can be of varying thick nesses sufficient for support of the intended module components, and thus the necessity of uniformly thick, expensive tower sidewalls, and the manufacturing problems associated therewith, is completely avoided. In addition, the modular tower permits mass production of certain univer- sally used modules to lower costs, and also allows the user to stock extra and/or different tower modules to facilitate field repair or alteration of the tower. (Docket No. 16561)

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