Hewlett-packard Development Company, L.P.

Hewlett-packard Indigo B.v.

Rodolfo Jodra

Doron Shaked

Mani Fischer

Alejandro Wiechers

Steven J Simske

Carl Staelin

Omer Barkol

Marie Vans

Sagi Schein

Eugene A Roylance

Ram Dagan

Johan Maurice Lammens

Bruce J Jackson

Craig Breen

George Henry Kerby

Gidi Amir

Pau Soler

Luca Chiarabini

Alberto Such

Ignacio Ruiz De Conejo

Oren Bengigi

Avi Malki

A color plane registration error method and system include printing a plurality of predetermined patterns of dots, each predetermined pattern having the respective dots arranged symmetrically around a common center of gravity. The center of gravity of each of the printed patterns and the distances between centers of gravity of respective patterns are determined to measure the color plane registration error.

Color plane registration error measurement

Automated inspection method for detecting a defect in a printed image, comprising processing a raster image, sending the raster image to a print process, printing a printed image corresponding to the raster image onto a medium, capturing a target image from at least a part of the printed image at a lower resolution than the printed image, at least in a medium moving direction, converting at least a part of the raster image to a reference image, and comparing the reference image to the target image.

Automated inspection of a printed image

A method for designing a screen includes receiving screen information related to a picture element divided into a number of subunits of the picture element, and determining an amount of an ink to apply to a media at a location of the picture element in response to the information. The subunits of the picture element have a higher resolution than the resolution of a printing apparatus at which the printing element will be reproduced.

Pixel exposure as a function of subpixels

A system and method for page composition in a processor-controlled printing system. Formatted image data is first received to a processor, the data representing image elements to be merged into a new document. At least one compressed cell describing each of the page elements is generated based on the formatted image data. A compressed cell contains pixilated image data of a predetermined pixel size. An element table including at least one cell pointer for each page element is generated. Each cell pointer includes a memory location and a cell type for each compressed cell that is pointed to by the generated element table. A merged page is composed based on the cell type entries of the element tables. A page composition system and a computer readable media having computer instructions for implementing the method of page composition are also provided.

System and method for improved page composition

A portable document format (PDF) file includes a graphical object and a corresponding spot color space. The spot color space is represented by at least one spot color name and an alternate representation of the spot color with device-independent data.

Representations of spot colors

A method, program product and system for generating a production ready document in a commercial printing environment including a designer location and a print service provider location, where the method comprises creating a file at the designer location using updated device configuration information from the print service provider location, selecting a document profile for the file from a plurality of document profiles available at the print service provider location, applying the selected document profile to the file and adjusting characteristics of the file, if necessary, to ensure that the file is a production ready document, submitting the production ready document to the print service provider location via an electronic network, and performing at least one of automated printing, finishing, packaging and shipping using the production ready document. Also, a method, program product and system for generating a production ready document in a commercial printing environment including a designer location and a print service provider location, where the method comprises selecting a document profile corresponding to a particular type of production project from a plurality of document profiles available at the print service provider location, creating a file at the designer location using the selected document profile and updated device configuration information from the print service provider location to ensure that the file is a production ready document, submitting the production ready document to the print service provider location via an electronic network, and performing at least one of automated printing, finishing, packaging and shipping using the production ready document.

Document profile for generation of production ready documents in a commercial printing environment

An integrated workflow for commercial printing with a closed-loop communication link between designer and print service provider locations. The present invention provides a method, program product and system for managing workflow in a commercial printing environment including a designer location and a print service provider location, where the method comprises establishing a closed-loop communication link between the designer location and the print service provider location, creating a press ready file at the designer location using updated device configuration information received from the print service provider location via said closed-loop communication link, submitting the press ready file to the print service provider location via the closed-loop communication link, and performing at least one of automated printing, finishing, packaging and shipping using the press ready file.

Managing workflow in a commercial printing environment through closed-loop communication between designer and print service provided locations

One single-stage proofer RIP replaces a conventional setup of two proofer RIP stages in series. Preliminary profile and data processing usually performed at the first of the conventional RIP stages, and source input terminal of the second, are instead performed in a preprocessor at the image-originating or production-hardcopy-printer station. The preprocessor combines production-printer forward and inverse profiles with a profile for the monitor, associated computer or graphics program&#x2014;to form a single profile that converts monitor signals to perceptual data representing appearance of the predicted production copy. This three-way composite profile is applied to the source terminal of the single-stage proofer RIP.

Proof-document formatting to enable full-capability remote proofing in a completely standard proofing station

A method for adjusting a laser diode drive current pulse, comprises providing a power correction table comprising drive current pulse correction factors corresponding to counter positions. The method also comprises providing a jump table comprising counter position adjustments corresponding to correction factors. A count value of a position within the counter positions is maintained. Maintaining the count value comprises indexing the count value to the jump table and incrementing the count value for each of a series of pixel clocks. A correction factor is determined, wherein determining the current correction factor comprises indexing the count value to the power correction table.

Laser diode modulator and method of controlling laser diode modulator

In an implementation of a printing system, an electrophotographic imaging plate electrostatically attracts a first concentration of an ink having a particular color. A developer unit is biased with a developer voltage and the first concentration of the ink is transferred onto the electrophotographic imaging plate from the developer unit according to the developer voltage. The electrophotographic imaging plate then electrostatically attracts a second concentration of the ink. The developer unit is biased with an adjusted developer voltage and the second concentration of the ink is transferred onto the electrophotographic imaging plate from the developer unit according to the adjusted developer voltage.

Printing system

A system and service for delivery of files to a plurality of users over a communications network comprises one or more server computers operable for receiving a plurality of electronic documents or files and storing those document/files; a plurality of receiving devices capable of receiving the documents/files; and a plurality of printer devices for printing the documents/files. Each receiving device registers itself with a server computer, and for each individual user, a printer device is specified for printing documents/files intended for that user. The server computer distributes the documents for a particular user to the corresponding receiving device specified by that user for receiving those documents/files, and the documents/files are printed on the specified printer device.

Automatic registration of receiving device on a remote printing application

The final-hardcopy operating facility, &ldquo;target facility&rdquo;, converts the content provider's original data file to a different color space to form a proofing data file. A proofing facility, which is distinct from the target facility, uses the proofing file to produce a visible proof for viewing by the content provider, customer etc. A common proofing file is applied to both preparing the proof and printing the final hardcopy. Because it is the target facility rather than the content provider or the proofing facility that prepares the proofing file, using maximum available knowledge about the printing equipment which will be used and its color characterization and other technical behavior, this approach gives maximum assurance that the final hardcopy will represent the proof as accurately as practical.

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Boise, ID, United States of America

Rodolfo Jodra