Abstract: The group of inventions solves the problem in processing defects in printed images. The printed image inspection method and an inspection apparatus comprise: determining a region of interest corresponding to printed images having respective identifiers by detecting boundaries in a printed calibration image; capturing target images of the printed images using the region of interest; comparing pixels in the target images with pixels in image data corresponding to the printed images in order to identify printed images having a print defect using the identifiers.

Abstract: In an example implementation, a method of providing image registration information in a digital printing press includes imaging a printed page on an impression drum of a digital printing press, determining image registration information from printed content on the page, and displaying a graphical visualization of the image registration information on a user interface screen of the digital printing press.

Abstract: Described herein is a method for priming a polymeric print substrate for subsequently receiving a liquid electrophotographic (LEP) ink in which a surface of a polymeric print substrate is coated with a first primer using an analogue printing technique and a second primer is digitally printed to the surface of the polymeric print substrate coated with the first primer.

Abstract: Described herein is a method for priming a print substrate for subsequently receiving a liquid electrophotographic (LEP) inkin which a surface of a print substrate is coated with a first primer using an analogue printing technique and a second primer is digitally printed to the surface of the print substrate coated with the first primer.

Abstract: Herein is described an electrophotographic printing process in which a liquid electrophotographic ink image and a dry electrophotographic toner image may be printed on a print substrate.

Abstract: Described herein is a method for priming a print substrate for subsequently receiving a liquid electrophotographic (LEP) inkin which a surface of a print substrate is coated with a first primer using an analogue printing technique and a second primer is digitally printed to the surface of the print substrate coated with the first primer.

Abstract: Herein is described an electrophotographic printing process in which a liquid electrophotographic ink image and a dry electrophotographic toner image may be printed on a print substrate.

Abstract: In an example implementation, a method of providing image registration information in a digital printing press includes imaging a printed page on an impression drum of a digital printing press, determining image registration information from printed content on the page, and displaying a graphical visualization of the image registration information on a user interface screen of the digital printing press.

Abstract: A dual engine printer comprises two print engines, and identical spread data is forwarded to each of the print engines, although each engine prints only one side of the sheet. Each print engine comprises a signature extractor for extracting a signature representative of the spread data it receives, and the printer is able to compare the two signatures to verify that the spread data is identical. The printer is thus able to detect data corruption or alternatively, if the signature extraction is synchronized with the print engage, the printer can verify that both sides are being printed on the same sheet.