Method for reducing web printing press start-up waste, and related printing press and printed product
AssigneeGoss International Americas, Inc.
InventorsMichael Raymond Rancourt, Howard W. Hoff, Laura Schuler Cossette
Life of this patent
Estimating the term…
Abstract
A method for operating a web printing press is provided. The method includes unwinding a substrate from a roll to define a web; during makeready, printing the web using at least one print unit, the makeready ending when the web is being printed to a desired standard; stopping the web after the makeready; rewinding the web so that the substrate printed during the make ready pass back through the print unit; and unwinding again the rewound substrate to pass through the print unit. A press and printed product are also provided.
Claims19
A method for operating a web printing press comprising:
- unwinding a substrate from a roll to define a web;
- during makeready, printing the web using at least one print unit, the makeready ending when the web is being printed to a desired standard;
- stopping the web after the makeready;
- rewinding the web so that the substrate printed during the make ready passes back through the print unit;
- and
- unwinding again the rewound substrate to pass through the print unit.
A web printing press comprising:
- a roll stand for a substrate roll, the roll stand including a reversible motor;
- at least one web guide for guiding a web unwound from the substrate roll;
- at least one print unit for printing the web;
- at least one sensor for sensing an image printed on the substrate;
- and
- a controller for rewinding the web as a function of an input from the sensor.
A printed product comprising:
- a substrate, a first makeready printed image below a certain standard, and a second image overtop the first makeready printed image.
Dependencies are inferred from the claim text.