Closed loop ceps-press control systems
AssigneeCreo IL. Ltd.
InventorsRafail Bronstein, Ehud Spiegel, Ephraim A. Carlebach
Life of this patent
Estimating the term…
Abstract
An integrated computerized system for use in color printing having at least one digital representation of a color characteristic of at least one page to be printed and a digital storage memory for storing the digital representation. An imposition apparatus is connected to the storage memory to receive the digital representation and arrange the digital representation in accordance with a desired plate layout, thereby to define a plate image. A press set-up device extracts from the plate image the color characteristic and provides ink flow set-up data to a printing press in accordance with the extracted color characteristic.
Claims17
A closed loop control system for printing an image on a sheet using a color printing press comprising:
- a) means for receiving signature coordinates of said image;
- b) means for receiving desired visual appearance related to said signature coordinates;
- wherein said means for receiving signature coordinates and said means for receiving desired visual appearance serve as input for said control system;
- c) means for extracting information from said printed sheet for use as feedback for said control system;
- and
- d) means for changing press parameters according to said input and said feedback to improve the visual appearance of subsequent prints of said image.
A method of controlling, in a closed loop, the printing of an image on a sheet using a color printing press, comprising the steps of:
- a) receiving at least one input signal including signature coordinates defining at least one area of interest in said image and desired appearance information linked to said at least one area of interest;
- b) receiving at least one feedback signal including information extracted from said printed sheet;
- c) comparing said feedback signals and said input signals;
- and
- d) using the result of said comparison to modify at least one press control parameter, to improve the visual appearance of subsequent prints of said image.
A closed loop control system for printing an image on a sheet using a color printing press, comprising:
- a) at least two printing stations, wherein each printing station prints one color separation;
- b) means for receiving signature coordinates of said at least two color separations, wherein said means for receiving signature coordinates serve as input for said control system;
- c) means for extracting information from said printed sheet for use as feedback for said control system;
- and
- d) means for changing press parameters according to said input and said feedback to improve the visual appearance of subsequent prints of said image.
A method of controlling, in a closed loop, the printing of an image on a sheet using a color printing press, comprising the steps of:
- a) receiving at least one input signal including signature coordinates defining at least one registration mark of one color separation of said image;
- b) receiving at least one feedback signal including registration information extracted from said printed sheet;
- c) comparing said feedback signal and said input signal;
- and
- d) using the result of said comparison to modify at least one press registration parameter, to improve the visual appearance of subsequent prints of said image.
Dependencies are inferred from the claim text.