APPARATUS AND METHOD FOR CONTROLLING DOCTOR PRESSURE

Title:

APPARATUS AND METHOD FOR CONTROLLING DOCTOR PRESSURE

Document Type and Number:

Japanese Patent JP2005096352

Kind Code:

A

Abstract:

To provide an apparatus and a method for controlling doctor pressure, which enable the more accurate and quantitative control of the doctor pressure, and which can provide high-quality gravure printed matter.

This doctor pressure control apparatus comprises: a dot photographing camera 6 for photographing a dot of printed matter; a dot image storage processor 7 for measuring and storing/processing an area ratio of the photographed dot; an air pressure converter 8 for deriving the amount of the regulation of the pressure of a doctor 4 so that the area ratio of the dot can reach a target value; and an air pressure regulator 9 for regulating the doctor pressure in accordance with the amount of the regulation. In the dot of the printed matter, a designed value falls within a range of 2-5%.

Inventors:

ITO TOSHIHIRO
MOGI MASAO
ITO TATSUO
WATANABE DAINOSUKE

Application Number:

JP2003335319A

Publication Date:

April 14, 2005

Filing Date:

September 26, 2003

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TOPPAN PRINTING CO LTD

International Classes:

B41F9/10; B41F31/02; B41F33/14; (IPC1-7): B41F9/10; B41F31/02; B41F33/14

Previous Patent: IMAGE FORMING APPARATUS AND METHOD OF CORRECTING SCANNING POSITION

Next Patent: GAS-BARRIER FILM