Content inspection for input print data file

a content inspection and input print technology, applied in the direction of digital output to print units, instruments, printing, etc., can solve the problems of poor print reproducibility, inability to inspect whether or not a printed image has sufficient image reproducibility,

Inactive Publication Date: 2005-03-17
DAINIPPON SCREEN MTG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Since this device calculates a characteristic value relating to reproducibility of each object, and then determines based on the calculated characteristic value whether or not the reproducibility of the object is good, the input print data file is inspected as to whether or not the printed image has sufficient image reproducibility. In addition, since the characteristic values are set according to content types of objects, and a characteristic value suitable for a content type is used to inspect reproducibility of each object.

Problems solved by technology

However, such a technique inspects only the input print data conditions but does not inspect whether or not a printed image has sufficient image reproducibility.
Consequently, even if the print data processing is performed on the input print data file that has passed the inspection for input print data conditions, the resulting print may have poor reproducibility.

Method used

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  • Content inspection for input print data file
  • Content inspection for input print data file
  • Content inspection for input print data file

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modification 1

C1.

The characteristic values for the three types of contents are illustrative only, and other kinds of characteristic values may be used for the content check. It is preferable that the content check using at least one characteristic value is performed on each type of content.

modification 2

C2.

Although the above embodiment uses the three content types, any types may be used as the content types. It is preferable that different characteristic values are used for the respective contents to determine whether the image has good reproducibility.

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PUM

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Abstract

A technique of inspecting an input print data file to determine whether or not a printed image has good reproducibility is provided. A content type identification module 321 identifies a content type of each object contained in the input print data file PD0. A characteristic value calculator 322 calculates a characteristic value relating to reproducibility of each object which is pre-selected according to the content type of the object. A characteristic value judgment module 323 determines based on the calculated characteristic value whether or not each object meets a judging condition relating to reproducibility of image portion represented by the object.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS The present application claims the priority based on Japanese Patent Application No. 2003-319133 filed on Sep. 11, 2003, the disclosure which is hereby incorporated herein by reference in its entirety. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inspection of input print data file for print data processing. 2. Description of the Related Art With the progress of computer technology, computer-based digitalization has come into widespread use even in prepress systems for commercial printing. A digital prepress system receives an input print data file (for example, PDF data or PostScript data, PostScript being a trademark of Adobe Systems Incorporated), and performs various print data processing on this input print data file to generate binary plate data. Then, this plate data is used to output a printing plate or screen film. In addition, recently on-demand printing is carried out in which binary...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B41J21/00G06F3/12G06F17/00H04N1/00
CPCH04N1/00002H04N1/00005H04N1/00029H04N1/00074H04N1/00047H04N1/00068H04N1/00039
Inventor FURUKAWA, ITARUFUKASE, MASAYUKI
Owner DAINIPPON SCREEN MTG CO LTD
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