Hewlett-packard Development Company, L.p.

Frank Perdicaro

David C Collins

Jason Cassidy Hower

Jose Galmes

Lluis Abello Rosello

Thomas A Saksa

Bruce A Stephens

Joan Vidal Fortia

Tracy A Lang

Matthew Alan MacClary

Mun Yew Lee

Bryan Crampton

In one example, a printing system includes a print engine and a print engine controller operatively connected to the print engine to print, on a single substrate web, graphics for multiple different layouts of corrugated boxes to be lined with the web and machine readable images representing corrugator control information for making the multiple different layouts.

Corrugator control information on a box liner

A method may include with a raster image processor, creating pretreatment plane rasterized image data from source image data and, with a plasma emitter, selectively applying a plasma treatment to a surface of a print media based on the pre-treatment plane rasterized image data. A printing device may include a raster image processor to execute an image analysis module to create pre-treatment plane rasterized image data from source image data and a plasma emitting device to selectively apply a plasma treatment to a surface of a print media based on the pre-treatment plane rasterized image data.

Selective application of plasma treatment

A printing device may include a processor to receive data describing a plurality of independent print streams comprising an image; for each of the plurality of independent print streams, emulate a first frame-less press using gapless frames on a first side of a medium upon execution of a framing module wherein each of the images of the independent print streams comprise an emulated spitgap; for each of the plurality of independent print streams, emulating a second frame-less press using gapless frames on a second side of the medium with the framing module, wherein an emulated spitgap associated with each of the images of the second side of the medium is to be geometrically adjusted to match a position on the medium of an image on the first side of the medium.

Two-sided multi-lane print for independent print streams

In an example, an apparatus is described that includes a vision system and an image correction module. The vision system captures an image of a multi-lane print output. The image correction module receives the image of the multi-lane print output from the vision system and calculates a calibration to image data from which the multi-lane output is printed. The calibration minimizes visual variations between the multi-lane print output and a reference image.

Minimizing visual variations in multi-lane print outputs

Examples analyze at least one of a plurality of planes of image data of print content to determine media expansion characteristics for the print content based at least in part on the at least one of the planes of image data. Examples adjust, prior to printing the print content, at least one plane of image data based at least in part on the media expansion characteristics to thereby compensate for media expansion during printing of the print content.

Media expansion compensated print content

An example system includes a print engine to print a first image on a medium. The system also includes a controller communicatively coupled with the print engine. The controller is to detect a failure in the print engine that results in a defect in the first image. The controller also is to perform an affine transformation on a second image to produce a transformed second image. The controller is to instruct the print engine to print the transformed second image.

Image transformations based on defects

In an example, an apparatus is described that includes a color conversion module an a visual noise module. The color conversion module converts page description language describing an image into rasterized image data. The visual noise module then recalculates pixel values in an area of flat tint detected in the rasterized image data to introduce visual noise in the area of flat tint.

Introducing visual noise in a flat tint area of a printed image

An example system includes a controller. The controller is to determine a first end point of a previous frame in a first image. The first image is to be printed on a first ribbon. The controller is to determine a second end point of the previous frame in a second image to be printed on a second ribbon. The controller is to create a current frame containing first image data from the first image starting after the first end point, second image data from the second image starting after the second end point, and third image data from a beginning of the first image. The system includes an image engine to form an image corresponding to the current frame on a medium.

Print frames creation

In one example, a method for an inkjet printer that includes: converting original image data to rasterized data for printing with an inkjet printer; performing a first halftoning operation to modify the rasterized data for a visible independent effect, generating modified rasterized data; and performing a second halftoning operation on the modified rasterized data to generate halftone data for printing the image with the visible independent effect.

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Corvallis, OR, United States of America

Frank Perdicaro