Hp Indigo B.v.

Hewlett-packard Development Company, L.P.

Rivay Mor

Ido Finkelman

Tsafrir Yedid Am

Pavel Blinchuk

Iliya Shahamov

Lior Katz

Uri Lidai

Moshe Haim

Hagai House

Examples of an apparatus and method for use with a printing system are described herein. A correction to be applied to a printing system during print calibration is obtained. A distortion is applied to the correction. A relationship between an expected and measured output of the printing system is determined based on the print performed at least in part on the distorted correction. The printing system is calibrated on the basis of the determined correction.

Printing system calibration applying a distortion to the correction creating a detectable region in the second output

In one example, a device comprises an image transfer member, a platen to form a first nip with the image transfer member, a photo imaging plate to form a second nip with the image transfer member, and a controller to determine first information relating to a characteristic of the first nip, and to determine second information for use in adjusting a relative position of the photo imaging plate and the image transfer member on the basis of the first information.

Nip adjustment

In an example, a method includes printing a set of images by transferring print agent between a roller of a print agent source and an electrophotographic surface in a plurality of transfer operations, wherein the roller is controlled to have a first voltage profile during each of the transfer operations. A variation in optical density which is consistent across the set of printed images may be detected, and a second voltage profile correction may be determined based on the variation in optical density. The method may further comprise printing a subsequent image by transferring print agent between the print agent source roller and the electrophotographic surface in a subsequent transfer operation, wherein the roller is controlled to have the second voltage profile during the subsequent transfer operation.

Controlling voltage profiles

An example is provided to calculate calibration data for or print quality data of a printer, in one example, image data on printed elements of a plurality of patches printed at different powers or intensities by a print device may be determined.

Obtaining printed element data of patches to determine calibration data of a printer

According to an aspect there is provided a method for conditioning a blanket in an offset printer, the method comprising during a non-printing cycle of the offset printer, applying a first voltage to an intermediate transfer member of the offset printer, wherein the intermediate transfer member comprises the blanket, and maintaining the first voltage for a first period of time.

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Ness Ziona, Israel

Rivay Mor