COLOR TONE CONTROL METHOD AND DEVICE FOR PRINTING MACHINE

Title:

COLOR TONE CONTROL METHOD AND DEVICE FOR PRINTING MACHINE

Document Type and Number:

WIPO Patent Application WO/2005/084950

Kind Code:

A1

Abstract:

In order to control the color tone of a printed sheet, measurement data on various error factors is collected stably, and the supplied amount of ink in a printing machine is controlled according to the collected data with high accuracy. Plate-making data created in the upstream section is used as target data on a printed sheet, the tone value included in the plate-making data for each ink key width of the printing machine in the printing paper transfer direction is calculated, the plate-making data and the tone value in the printing paper transfer direction for the ink key width of the actually printed sheet corresponding to the ink key position where the calculated tone value is a predetermined threshold value or more are integrated and averaged. From the tone value obtained by the integration and averaging and the spectral reflectance, the controlled variables such as the ink key opening and the rotational speed of the ink fountain roller of the printing machine are calculated to control the color tone.

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JPS6038161	INKING DEVICE OR DAMPENING DEVICE FOR ROTARY PRESS
JP3517254	CONTENT TAKE-OUT DEVICE FOR CONTAINER, AND THE CONTAINER

Inventors:

NAGAI HIDEAKI (JP)

Application Number:

PCT/JP2004/016458

Publication Date:

September 15, 2005

Filing Date:

October 29, 2004

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
NAGAI HIDEAKI (JP)

International Classes:

B41F31/02; B41F33/00; B41F33/14; G01J3/46; B41F31/04; G01N21/27; G01N21/59; (IPC1-7): B41F31/02; B41F31/04; B41F33/00; B41F33/14; G01J3/46; G01N21/27

Foreign References:

JP2001353852A	2001-12-25
JP2001018364A	2001-01-23
JP2002301807A	2002-10-15
JP2001219540A	2001-08-14
JPH0752367A	1995-02-28

Other References: