JPS5548765A - Lamp regulator of copying machine - Google Patents

Lamp regulator of copying machine

Info

Publication number
JPS5548765A
JPS5548765A JP12131278A JP12131278A JPS5548765A JP S5548765 A JPS5548765 A JP S5548765A JP 12131278 A JP12131278 A JP 12131278A JP 12131278 A JP12131278 A JP 12131278A JP S5548765 A JPS5548765 A JP S5548765A
Authority
JP
Japan
Prior art keywords
lamp
output
voltage
circuit
regulator
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
JP12131278A
Other languages
Japanese (ja)
Inventor
Toshio Hashimoto
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.)
Omron Corp
Original Assignee
Omron Tateisi Electronics Co
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 Omron Tateisi Electronics Co filed Critical Omron Tateisi Electronics Co
Priority to JP12131278A priority Critical patent/JPS5548765A/en
Publication of JPS5548765A publication Critical patent/JPS5548765A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To achieve the improvement in the space factor of the lamp regulator and the reduction of its cost by so constituting the same that the signal detecting the abnormality of the lamp is emitted from the lamp regulator which sends a constant voltage to the lamp. CONSTITUTION:The voltage generated across a lamp L is led to a smoothing circuit consisting of a capacitor 72, resistances 73, 74 by way of a full-wave rectifying diode bridge 27 and diode 71. When the smoothed output becomes more than the specified value, the transistor 70 of an abnormality detecting circuit 70 goes ON. As a result, the transistor 81 of an output circuit 80 goes ON and an output is produced from its output terminal 17. Hence, at such a time when the voltage across the lamp L becomes abnormally high, the output voltage of the diode bridge 27 becomes large and therefore the output signal is outputted by the abnormality detecting circuit 70 and output circuit 80, whereby the operation of the copying machine unit is stopped. In this way, the improvement in the space factor of the lamp regulator and the reduction of its cost are made possible.
JP12131278A 1978-10-02 1978-10-02 Lamp regulator of copying machine Pending JPS5548765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12131278A JPS5548765A (en) 1978-10-02 1978-10-02 Lamp regulator of copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12131278A JPS5548765A (en) 1978-10-02 1978-10-02 Lamp regulator of copying machine

Publications (1)

Publication Number Publication Date
JPS5548765A true JPS5548765A (en) 1980-04-08

Family

ID=14808117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12131278A Pending JPS5548765A (en) 1978-10-02 1978-10-02 Lamp regulator of copying machine

Country Status (1)

Country Link
JP (1) JPS5548765A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS509980A (en) * 1973-05-31 1975-01-31
JPS5176872A (en) * 1974-12-26 1976-07-03 Olympus Optical Co Hakunetsudenkyuno tentosochi
JPS534229B1 (en) * 1971-02-04 1978-02-15

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS534229B1 (en) * 1971-02-04 1978-02-15
JPS509980A (en) * 1973-05-31 1975-01-31
JPS5176872A (en) * 1974-12-26 1976-07-03 Olympus Optical Co Hakunetsudenkyuno tentosochi

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