Hp Indigo B.v.

Gilad Greenberg

Itzik Shaul

George Trendafilov

Eli Velner

Moshe Koko Havive

Bar-Navi Miki

Eyal Bodinger

Raz Zamir

Shlomi Ben David

Zvika Yogev

Arnon Elihav

Michal Hod

According to some examples, a method comprises successively transferring a series of images from an imaging surface to an intermediate transfer member, ITM, then from the ITM to positions on a web substrate. The method may comprise intermittently adjusting a position at which particular images are transferred to the ITM by a first defined distance laterally across the ITM and by a second defined distance longitudinally with respect to the ITM. The method may comprise adjusting a position at which the particular images are transferred to the web substrate by approximately the first defined distance laterally relative to the ITM and by approximately the second defined distance longitudinally relative to the ITM. The method may comprise, after a first defined number of intermittent position adjustments, changing a direction in which the position is adjusted. A print apparatus and a machine-readable medium are also disclosed.

Adjusting positions of images

Method and apparatus for printing on a printing substrate which is a web which is elongate in a longitudinal direction, wherein frames of a maximum printing format can be printed in a sequence on the web. The printing includes arranging a number of pages on sheets of a given sheet format, wherein the maximum printing format is larger in the longitudinal direction of the web than the sheet format, wherein pages which are adjacent in the longitudinal direction of the web are separate from each in the longitudinal direction of the web, imposing pages of more than one sheet into printing frames which are larger in the longitudinal direction of the web than the sheet format but not larger than the maximum printing format, printing the frames, and grouping the pages from the printed frames to sheets on which the pages are arranged as originally.

Printing on a web of a printing substrate

A method of forming an image and a crease on media by an image forming system includes forming a crease formation pattern on an impression media received by an impression member. The method also includes forming the image on an image forming blanket of an intermediate transfer member by a print unit. The method also includes pressing the media against the impression member by the image forming blanket to transfer the image onto the media and to establish contact with the crease formation pattern to form the corresponding crease on the media.

Formation of a crease and an image on media

A duplex printing system and method of configuring the same are described. In examples, an image, such as a test pattern, on one side of a print substrate is printed to be out of phase with an image, such as a test pattern, on the other side of the print substrate. This is achieved by adjusting a configuration of a print buffer that is located between first and second print engines of the duplex printing system. In particular examples, a length of a web within the print buffer is controlled such that the images are out of phase.

Duplex printing

According to one example, there is provided a method of printing. The method comprises generating a gloss modification image based on a substrate gloss level and a desired gloss level for a portion of the image, and printing the image and the gloss modification image on the substrate.

Printing system and method

A method and system for performing color print quality monitoring for a color printing process, the method includes determining a calibration distance (ZCAL) between a Spectrophotometer () and an associated calibration patch () that provides a maximum luminescence value (LMAX) detected by the Spectrophotometer. The Spectrophotometer () is calibrated at the calibration distance by taking a color reading. A first color patch distance (Z) between the Spectrophotometer and a color calibration patch () printed on a sheet () is determined from a first maximum color patch luminescence value (L). A first color reading of the color calibration patch is taken and a second color patch distance (Z) between the Spectrophotometer and a different area of the color calibration patch () is determined to provide a second maximum color patch luminescence value (L). A second color reading of the color calibration patch is taken and compared with the first color reading to determine if the printing process needs adjusting.

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Ness Ziona, Israel

Gilad Greenberg