Title:
LAMP TEMPERATURE CONTROLLING APPARATUS AND COLOR THERMAL PRINTER USING THE APPARATUS
Document Type and Number:
Japanese Patent JP3393937
Kind Code:
B2
Abstract:
PURPOSE: To keep the temperature of the tubular wall of a rod-like lamp constant and keep the quantity of light constant in the whole range of the lamp.
CONSTITUTION: A reflector 22 is set in the back side of an ultraviolet lamp 2 1 so as to bring a part of the reflector 22 into contact with the back side and they are stored in a tube 23. Cooling fans 25, 26 are installed in both sides of the tube 23 and two temperature sensors 27, 28 are attached to the outer wall of the reflector 22. A cooling fan driving control circuit 42 compares the temperature measured by each temperature sensor 27, 28 with cooling fan driving standard temperature. In the case the temperature measured by the temperature sensor 27 is higher than the cooling fan driving standard temperature, a first control part 48 drives the cooling fan 25 and in the case the temperature measured by the temperature sensor 28 is higher, a second control part 49 drives the cooling fan 26 to cool an ultraviolet lamp 21. A temperature level determining circuit 43 compares each measured temperature with a printing starting reference temperature and in the case the temperature measured either one of the sensors is lower than the printing starting reference temperature, a lamp driving circuit 45 turns the ultraviolet lamp 21 on to raise the tubular wall temperature. The tubular wall temperature of an ultraviolet lamp 31 is also controlled in the same way.
Inventors:
Satoshi Ueda
Application Number:
JP25184794A
Publication Date:
April 07, 2003
Filing Date:
October 18, 1994
Export Citation:
Assignee:
Fuji Photo Film Co., Ltd.
International Classes:
B41J2/315; B41J2/365; B41J2/32; H05B3/00; H05B7/00; (IPC1-7): H05B3/00; B41J2/32
Domestic Patent References:
| JP6260147A | ||||
| JP6127000A | ||||
| JP5323810A |
Attorney, Agent or Firm:
Kazunori Kobayashi