Hp Indigo B.v.

Moshe Koko Havive

Gilad Greenberg

Raz Zamir

Shlomi Ben David

Michal Hod

Zvika Yogev

Arnon Elihav

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 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

In one example, a printed output inspection unit () for a web printing system (). The inspection unit has a first L-inverter () disposed in a first plane (), and a second L-inverter () disposed in a second plane () offset from the first plane in a direction orthogonal to the first plane. The inspection unit () also has an inspection area () between the first and second L-inverters to view a side () of a web substrate (), the inspection area extending in the direction orthogonal to the first plane.

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Ness Ziona, Israel

Moshe Koko Havive