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Title:
TEMPERATURE CONTROL SYSTEM OF HEAT SENSITIVE PRINTING APPARATUS
Document Type and Number:
Japanese Patent JPS58188676
Kind Code:
A
Abstract:

PURPOSE: To bring the temp. of a printing plate to an optimum temp. within a short time, by a method wherein plural sensors are provided to a heating printing plate while the high voltage of a rapid heating heater is blocked when a temp. in the vicinity ?of a printing optimum temp. is detected by a first sensor and low voltage is applied while regulated by the detection of the change in the temp. of a second sensor.

CONSTITUTION: When a power source is turned ON at the begining time of printing, a transistor Tr-1 is turned ON and high voltage Vb is applied to a heater 2 to abruptly raise the temp. of a printing plate 1. When the temp. thereof reaches a temp. T-1 slightly lower than a printing optimum temp. T-2, close the transistor Tr-1 and to block the high voltage Vb while only low voltage Vt sent from a control circuit 8 is applied to the heater 2. Subsequently, the low voltage Vt is gradually lowered until the temp. of the printing plate 1 reaches the printing optimum temp. T-2 by the action of a second sensor 4 and, when the temp. thereof reaches to the printing optimum temp. T-2, the low voltage Vt is made constant to hold the temp. of the printing plate to the printing optimum temp. T-2. Thereafter, the second sensor detects the change in the temp. of the printing plate and the low voltage Vt is regulated by the control circuit 8.


Inventors:
MATSUDA YASUHIKO
Application Number:
JP7153582A
Publication Date:
November 04, 1983
Filing Date:
April 30, 1982
Export Citation:
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Assignee:
SATO CO LTD
International Classes:
G07B1/06; B41J2/365; G05D23/19; G06K15/10; (IPC1-7): B41J3/20; G06K15/00; G07B1/06
Domestic Patent References:
JPS5756282A1982-04-03



 
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