JPS57189148A - Preventing method for dew condensation in optical device - Google Patents

Preventing method for dew condensation in optical device

Info

Publication number
JPS57189148A
JPS57189148A JP56074550A JP7455081A JPS57189148A JP S57189148 A JPS57189148 A JP S57189148A JP 56074550 A JP56074550 A JP 56074550A JP 7455081 A JP7455081 A JP 7455081A JP S57189148 A JPS57189148 A JP S57189148A
Authority
JP
Japan
Prior art keywords
temp
dew condensation
machine
difference
outside
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56074550A
Other languages
Japanese (ja)
Inventor
Tadashi Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56074550A priority Critical patent/JPS57189148A/en
Publication of JPS57189148A publication Critical patent/JPS57189148A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control
    • G03G21/206—Conducting air through the machine, e.g. for cooling, filtering, removing gases like ozone
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/20—Humidity or temperature control also ozone evacuation; Internal apparatus environment control
    • G03G21/203—Humidity

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain a safe, sure, inexpensive and simple preventing device for dew condensation by detecting the temp. difference between the atmospheric air and the inside of a machine and stopping the operation of a cooling means for introduction of the atmospheric air until the temp. rises to the extent of not causing dew condensation. CONSTITUTION:The temp. detected values of inside and outside temp. sensors 6, 7 of a copying machine are compared in a comparator 8, and according to the output thereof, the driving of a cooling fan 3a is controlled by a controlling circuit 9. The driving of the fan 3 is held stopped until the temp. difference between the inside and outside of the machine attains a prescribed value. When the temp. difference attains the prescribed value upon elevation of the temp. by the heating source in the machine, the fan 3a is started to introduce the atmospheric air, thereby eliminating the temp. difference between the inside and the outside of the machine quickly. The safe, sure, inexpensive and simple preventing device for dew condensation is obtained.
JP56074550A 1981-05-18 1981-05-18 Preventing method for dew condensation in optical device Pending JPS57189148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56074550A JPS57189148A (en) 1981-05-18 1981-05-18 Preventing method for dew condensation in optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56074550A JPS57189148A (en) 1981-05-18 1981-05-18 Preventing method for dew condensation in optical device

Publications (1)

Publication Number Publication Date
JPS57189148A true JPS57189148A (en) 1982-11-20

Family

ID=13550461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56074550A Pending JPS57189148A (en) 1981-05-18 1981-05-18 Preventing method for dew condensation in optical device

Country Status (1)

Country Link
JP (1) JPS57189148A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61114447U (en) * 1984-12-28 1986-07-19
JPS61282857A (en) * 1985-06-10 1986-12-13 Canon Inc Ventilator for image forming device
JPS6244771A (en) * 1985-08-23 1987-02-26 Fuji Xerox Co Ltd Dew condensation preventing device for optical system
JPS63159836A (en) * 1986-12-24 1988-07-02 Fuji Xerox Co Ltd Copying device
JPH01115750U (en) * 1988-01-28 1989-08-03
JP2002148875A (en) * 2000-11-08 2002-05-22 Canon Inc Image forming device
JP2019169550A (en) * 2018-03-22 2019-10-03 富士ゼロックス株式会社 Electronic device and program
CN112665285A (en) * 2020-12-18 2021-04-16 南京瑞贻电子科技有限公司 Anti-condensation structure for local cooling and use method thereof

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61114447U (en) * 1984-12-28 1986-07-19
JPS61282857A (en) * 1985-06-10 1986-12-13 Canon Inc Ventilator for image forming device
JPS6244771A (en) * 1985-08-23 1987-02-26 Fuji Xerox Co Ltd Dew condensation preventing device for optical system
JPS63159836A (en) * 1986-12-24 1988-07-02 Fuji Xerox Co Ltd Copying device
JPH01115750U (en) * 1988-01-28 1989-08-03
JP2002148875A (en) * 2000-11-08 2002-05-22 Canon Inc Image forming device
JP4630447B2 (en) * 2000-11-08 2011-02-09 キヤノン株式会社 Image forming apparatus
JP2019169550A (en) * 2018-03-22 2019-10-03 富士ゼロックス株式会社 Electronic device and program
CN112665285A (en) * 2020-12-18 2021-04-16 南京瑞贻电子科技有限公司 Anti-condensation structure for local cooling and use method thereof

Similar Documents

Publication Publication Date Title
GB2018470A (en) Temperature control apparatus
ATE38555T1 (en) METHOD AND DEVICE FOR DEFROST CONTROL OF HEAT PUMPS.
JPS57189148A (en) Preventing method for dew condensation in optical device
JPS56116047A (en) Copying apparatus
JPS54133649A (en) High frequency heating apparatus
JPS6423054A (en) Frequency controller of refrigerating cycle
JPS57105579A (en) Operation control device for blower
JPS5690719A (en) Controlling method for preventing dew condensation in air-conditioning device for automobile
JPS5770755A (en) Controller for demister on window glass in compartment of car
JPS57173521A (en) Control device of water pump in engine
JPS5653333A (en) Changing device for blow-off angle
JPS5711369A (en) Copying machine
JPS5577658A (en) Air conditioner
JPS6454154A (en) Temperature control method for air conditioner
JPS5562757A (en) Method of cooling electric machine
JPS55137441A (en) Controlling method for car air-conditioning
JPS5419103A (en) Humidity controller for rotary machine
JPS6456994A (en) Electric fan
JPS5589629A (en) Automatically controlled heater
SE8008422L (en) SPEED CONTROL DEVICE
JPS57134627A (en) Heater for food
JPS542543A (en) High frequency heating device
JPS5455859A (en) Controller for drier
JPS57108534A (en) Ventilator
JPS5644533A (en) Heating apparatus