Title:
METHOD AND APPARATUS FOR MEASURING AND CONTROLLING CONCENTRATION OF PIGMENT IN INK
Document Type and Number:
Japanese Patent JP3269831
Kind Code:
B2
Abstract:
PURPOSE: To measure and control the concn. of pigment in ink on-line within a real time in a gravure printing press.
CONSTITUTION: The tips of a pair of optical fibers 16a, 16b are inserted in and fixed to the ink circulating pipe 11a connecting an ink pan 3 and an ink tank 9 in opposed relationship on the same axis so as to form a gap 21 and the ink passing through the gap 21 is irradiated with the light from a light source 18 and the quantity of the transmitted light is detected by a photodetector 19 to measure the concn. of pigment. Further, the solenoid valve 26 of a high concn. ink supply device 23 and the solenoid valve 31 of an ink diluent supply device 28 are opened and closed to control the concn. of ink.
Inventors:
Seiji Kawahara
Hisato Shikata
Hisato Shikata
Application Number:
JP23872591A
Publication Date:
April 02, 2002
Filing Date:
August 26, 1991
Export Citation:
Assignee:
Dai Nippon Printing Co.,Ltd.
International Classes:
B41F31/02; G01N15/06; G01N21/59; G05D21/00; (IPC1-7): G01N21/59; B41F31/02; G01N15/06; G05D21/00
Domestic Patent References:
| JP1113244A | ||||
| JP61230727A | ||||
| JP4727885U | ||||
| JP5865556U |
Attorney, Agent or Firm:
Kyozo Norimatsu