Printing
OwnerMoisey Bernstein, Arik Zuria +2inventors
InventorsMoisey Bernstein, Arik Zuria, Tsahi Rosenbaom, Boris Weinstein
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Abstract
A method of printing on both sides of a substrate (20) comprising checking the relative positions of images on the front and back of the printed substrate (20) by capturing an image (100, 100) of markings (60, 62, 50, 52) on the front and back by imaging the printed substrate (20) from one side only, the markings on the back (60, 62) being seen through the material of the substrate (20).
Claims10
A method of printing on both sides of a substrate (20) comprising checking the relative positions of images on the front and back of the printed substrate (20) by capturing an image (100, 100′) of markings (60, 62, 50, 52) on the front and back by imaging the printed substrate (20) from one side only, the markings on the back (60, 62) of the printed substrate (20) being seen through the material of the substrate (20).
The method of claim 2, comprising adjusting relative positions of images on the front and back of the substrate (20) in a subsequent print operation if it is determined that the relative positions of the front (50,52) and back (60,62) markings are determined not to be acceptable.
The method of any previous claim, wherein the image (100) of the printed substrate (20) is obtained from the printed substrate (20) when the printed substrate (20) is being supported in a printer (11;
- 11a).
A method of image processing comprising:
- capturing image data from an image on a front side of an image bearing substrate (20);
- capturing show-through image data from an image on the back side of the image bearing substrate (20);
- processing the captured data to determine the relative positions of the image on the front side of the image bearing substrate and the image on the back side of the image bearing substrate (20).
A method of controlling a printer (11;
- 11a) comprising:
- performing the image processing of claim 6;
- and controlling the printer (11;
- 11a) using said relative positions determined by the image processing.
A system for calibrating a printer (11;
- 11a) comprising:
- an imager (10) arranged to obtain an image (100) of a print medium (20) produced by the printer (11;
- 11a) from one side of the print medium;
- and a processor arranged to:
- process said image (100) to determine a first image component (50,52) from a first side of the print medium (20) and a second image component (60, 62) from a second side of the print medium (20);
- determine the relative separation of the first and second image components;
- and
- calibrate the printer (11;
- 11a) in response to the relative separation of the first and second image components.
Dependencies are inferred from the claim text.