Planographic plate producing method including adjusting...

Details Planographic plate producing method including adjusting... Planographic plate producing method including adjusting...

2006-05-23

2006-05-23

Evanisko, Leslie J. (Department: 2854)

Printing

Planographic

Lithographic plate making, and processes of making or using...

C101S401100, C430S302000, C118S663000

Reexamination Certificate

active

07047882

ABSTRACT:
A controller for a moisture adjusting device of the present invention reads out a target moisture content set in advance in a data table in accordance with a type of a planographic printing plate; determines, every predetermined control period, a moisture content of an overcoat layer (measured moisture content) based on a measured signal SW; and calculates a difference (deviation) between the measured moisture content and the target moisture content. For example, if the measured moisture content of the overcoat layer is lower than the target moisture content, the controller sets an adjusted moisture content which is higher than the measured moisture content and controls the humidity and the temperature within a humidity conditioning zone so that an interposing paper web (protective sheet material) attains the adjusted moisture content within the humidity conditioning zone.

REFERENCES:
patent: 5604990 (1997-02-01), Takekoshi
patent: 1 076 013 (2001-02-01), None
patent: 1 172 697 (2002-01-01), None
patent: 8-146597 (1996-06-01), None
patent: 10-254187 (1998-09-01), None
Japanese Abstract No. 2003228176, dated Aug. 15, 2003.
Japanese Abstract No. 03217839, dated Sep. 25, 1991.

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