Register adjustment device on a printing machine with a plurality of printing units and method of operating the device
AssigneeHeidelberger Druckmaschinen AG
InventorAnton Rodi
Life of this patent
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Abstract
A printing machine having a plurality of printing units, and circumferential and side register adjusting devices for adjusting the register in all but one of the printing units, the one printing unit being non-adjustable, includes a control-command input device operatively associated with the non-adjustable one printing unit for producing a relative change in position of a subject in the non-adjustable one printing of a register adjustment of the one printing unit as a result of logically consistent register adjustments of the printing units having the circumferential and side register adjusting devices, and method of operation.
Claims11
A sheet printing machine for printing images on sheets having a plurality of register-provided units, a circumferential and a side register in each of said register-provided printing units for performing respective circumferential and side registration in said register-provided printing units;
- a register-free printing unit having no circumferential and side register;
- a plurality of adjustable front and side lays disposed ahead of at least one of said printing units for aligning the edges of the images;
- and a control device operatively engaging said circumferential and side registers and said front and side lays for controlling positions of said registers and lays.
Method for automatically correcting registers of a sheet printing machine having a plurality of register-provided printing units, each register-provided unit provided with a circumferential and a side registers and a register-free printing unit having no circumferential and side register, the method comprising the steps of determining a register deviation between an image printed by at least one of said register-provided printing units and an image printed by said register-free printing unit, and adjusting the registers of said at least one of said register-provided printing units so as to cancel said register deviation.
Dependencies are inferred from the claim text.