JPS5587122A - Light scanner - Google Patents

Light scanner

Info

Publication number
JPS5587122A
JPS5587122A JP16327378A JP16327378A JPS5587122A JP S5587122 A JPS5587122 A JP S5587122A JP 16327378 A JP16327378 A JP 16327378A JP 16327378 A JP16327378 A JP 16327378A JP S5587122 A JPS5587122 A JP S5587122A
Authority
JP
Japan
Prior art keywords
temperature
light scanner
heater
motor
thermistor
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.)
Granted
Application number
JP16327378A
Other languages
Japanese (ja)
Other versions
JPS6236211B2 (en
Inventor
Takayuki Shirasaki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP16327378A priority Critical patent/JPS5587122A/en
Priority to US06/104,845 priority patent/US4370019A/en
Publication of JPS5587122A publication Critical patent/JPS5587122A/en
Publication of JPS6236211B2 publication Critical patent/JPS6236211B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Abstract

PURPOSE: To eliminate the change in the resonance frequency of the vibrator and achieve the improvement in the light scanner by providing a thermo sensitive element in a reversible motor to detect the temperature in the motor controlling the temperature of the motor to the specified temperature by its detection output.
CONSTITUTION: A thermistor 10 and heater 20 are provided in the motor body 1 of the light scanner in order to stabilize mechanical characteristics such as resonance frequency of the vibrator. The thermistor 19 is disposed near a speed detecting plate 16 and the thin-plate-form heater 20 is disposed in close contact with the motor body 1 and is packed in the motor body 1 by the epoxy resin of superior heat conductivity. When a heater drive circuit DHT operates, the thermistor Th detects the temperature in the light scanner and the circuit DHT controls the current supply to the heater HT, by which the temperature in the light scanner is controlled to the specified temperature. As a result of this, it becomes possible to eliminate the fluctuations in the natural frequency of the torsion spring bar 2 and make its amplitude fluctuations negligible, thus the accuracy of the light scanner may be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP16327378A 1978-12-23 1978-12-23 Light scanner Granted JPS5587122A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP16327378A JPS5587122A (en) 1978-12-23 1978-12-23 Light scanner
US06/104,845 US4370019A (en) 1978-12-23 1979-12-18 Optical scanning device with temperature control means

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16327378A JPS5587122A (en) 1978-12-23 1978-12-23 Light scanner

Publications (2)

Publication Number Publication Date
JPS5587122A true JPS5587122A (en) 1980-07-01
JPS6236211B2 JPS6236211B2 (en) 1987-08-06

Family

ID=15770667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16327378A Granted JPS5587122A (en) 1978-12-23 1978-12-23 Light scanner

Country Status (1)

Country Link
JP (1) JPS5587122A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000014190A (en) * 1998-04-23 2000-01-14 Matsushita Electric Works Ltd Drive circuit for vibration type actuator
US7400338B2 (en) * 2004-09-28 2008-07-15 Brother Kogyo Kabushiki Kaisha Image forming apparatus with temperature detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000014190A (en) * 1998-04-23 2000-01-14 Matsushita Electric Works Ltd Drive circuit for vibration type actuator
US7400338B2 (en) * 2004-09-28 2008-07-15 Brother Kogyo Kabushiki Kaisha Image forming apparatus with temperature detection

Also Published As

Publication number Publication date
JPS6236211B2 (en) 1987-08-06

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