JPS5655978A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS5655978A
JPS5655978A JP9117679A JP9117679A JPS5655978A JP S5655978 A JPS5655978 A JP S5655978A JP 9117679 A JP9117679 A JP 9117679A JP 9117679 A JP9117679 A JP 9117679A JP S5655978 A JPS5655978 A JP S5655978A
Authority
JP
Japan
Prior art keywords
exposure
lamp
transfer
shutter
constitution
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
JP9117679A
Other languages
Japanese (ja)
Other versions
JPS642947B2 (en
Inventor
Tsuneki Inuzuka
Masahito Ishida
Yoshitaka Kawamo
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 JP9117679A priority Critical patent/JPS5655978A/en
Priority to GB8023091A priority patent/GB2058400B/en
Priority to DE19803026952 priority patent/DE3026952A1/en
Publication of JPS5655978A publication Critical patent/JPS5655978A/en
Priority to US06/428,956 priority patent/US4477179A/en
Publication of JPS642947B2 publication Critical patent/JPS642947B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain the stable images of good quality without intricating constitution by controlling the quantity of light from a light source thereby performing the residual image removal of a rotator and substantial uniformalization of its potential. CONSTITUTION:When a copying switch is turned on, a predestaticizing charger 24, a lamp 3, primary-, secondary- and transfer chargers 5, 6, 9 and a shutter 25 go on. Pre-coronas, primary-, secondary- and transfer coronas, blank exposure and uniform exposure are applied to the photoreceptor of a rotating drum 2 to clean the remained toner, charge, memory etc. respectively, whereby the preparation for starting copying is made. At this time, the lamp 3 is weak lighting. As the drum makes predetermined rotation, the platen 1 also moves and the lamp 3 emits light strongly, then the shutter 25 is turned off to stop blank exposure which is then changed to image exposure. The blank exposure is performed in order to prevent the occurrence of potential unevenness. Thereby, the always stable transfer images of good quality may be obtained.
JP9117679A 1979-07-16 1979-07-16 Image forming device Granted JPS5655978A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP9117679A JPS5655978A (en) 1979-07-16 1979-07-16 Image forming device
GB8023091A GB2058400B (en) 1979-07-16 1980-07-15 Electrophotographic image forming apparatus
DE19803026952 DE3026952A1 (en) 1979-07-16 1980-07-16 IMAGE GENERATION DEVICE
US06/428,956 US4477179A (en) 1979-07-16 1982-09-30 Image forming apparatus with adjustable light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9117679A JPS5655978A (en) 1979-07-16 1979-07-16 Image forming device

Publications (2)

Publication Number Publication Date
JPS5655978A true JPS5655978A (en) 1981-05-16
JPS642947B2 JPS642947B2 (en) 1989-01-19

Family

ID=14019144

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9117679A Granted JPS5655978A (en) 1979-07-16 1979-07-16 Image forming device

Country Status (1)

Country Link
JP (1) JPS5655978A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294350U (en) * 1985-11-29 1987-06-16

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010242U (en) * 1973-05-24 1975-02-01
JPS50124340U (en) * 1974-03-27 1975-10-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010242U (en) * 1973-05-24 1975-02-01
JPS50124340U (en) * 1974-03-27 1975-10-11

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6294350U (en) * 1985-11-29 1987-06-16

Also Published As

Publication number Publication date
JPS642947B2 (en) 1989-01-19

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