Heidelberger Druckmaschinen Ag

Ulrich Kot

Manfred Jurkewitz

A method of controlling register when overprinting a plurality of separated colors, includes adjusting with register adjusting devices the position of image fields produced with the separated colors on a print carrier, so that the image fields are in register with one another. The position of all of the image fields on the print carrier are continuously changed simultaneously in the same direction by an equal amount.

Method of controlling register when overprinting a plurality of separated colors

A method of controlling register when overprinting a plurality of separated colors, which includes adjusting with register adjusting devices the position of image fields produced with the separated colors on a print carrier, so that the image fields are in register with one another, which comprises continuously changing the position of all the image fields on the print carrier simultaneously in the same direction by an equal amount.

A method for regulating web tension in a web-fed rotary offset printing press includes increasing web tension over a predetermined speed range, substantially linearly with web speed, as the printing press runs up to operating speed, and an apparatus for performing the foregoing method.

Growing community of inventors

Heidelberg, Germany

Ulrich Kot