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Title:
MANUFACTURE OF COATED PAPER
Document Type and Number:
Japanese Patent JP3193075
Kind Code:
B2
Abstract:

PURPOSE: To provide heat-sensitive printing sheets with high quality and sensitivity by optically measuring the curtain film thickness profile in width direction and using a curtain applying apparatus provided with a controlling system to control slit open degree of a head corresponding to the application amount profile.
CONSTITUTION: The light emitted form a light source part 3 is partly absorbed or scattered by a curtain film 2 formed by spreading a coating liquid with a coater head 1 and the rest is transmitted and reaches a light reception part 4 having a plurality of image elements in the width direction of the curtain film 2 and whose focus is set at the curtain film 2. The light is converted into voltage corresponding to the quantity of the light, subjected to an A/D conversion by means of a computer 5, and while it is being stored in an internal memory, computation is carried out, a control signal is sent to an induction heating apparatus, and the temperature of profile adjusting blocks is changed. Due to the alteration of the temperature, the volume changes. Accordingly, by arranging a plurality of profile regulation blocks in the width direction, the flow rate profile in the width direction can be controlled by changing the open degree of the slit of the coater head.


Inventors:
Arai, Takao
Application Number:
JP19089191A
Publication Date:
July 30, 2001
Filing Date:
July 05, 1991
Export Citation:
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Assignee:
MITSUBISHI PAPER MILLS LTD
International Classes:
B05C5/00; B05D1/30; B05D7/00; B41M5/165; B41M5/30; B41M5/327; B41M5/333; D21H19/66; D21H19/72; D21H21/50; D21H23/48; D21H27/00; G11B5/842; (IPC1-7): B05D7/00; B05C5/00; B05D1/30; B41M5/165; B41M5/30; D21H23/48; D21H27/00; G11B5/842



 
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