JPS55111967A - Light radiation method to electrophotographic photoreceptor - Google Patents

Light radiation method to electrophotographic photoreceptor

Info

Publication number
JPS55111967A
JPS55111967A JP1938279A JP1938279A JPS55111967A JP S55111967 A JPS55111967 A JP S55111967A JP 1938279 A JP1938279 A JP 1938279A JP 1938279 A JP1938279 A JP 1938279A JP S55111967 A JPS55111967 A JP S55111967A
Authority
JP
Japan
Prior art keywords
light
light source
photosensitive drum
filter
transmits
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
JP1938279A
Other languages
Japanese (ja)
Inventor
Junji Kurokawa
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 JP1938279A priority Critical patent/JPS55111967A/en
Publication of JPS55111967A publication Critical patent/JPS55111967A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To achieve the simplification of the device while preventing the fatigue phenomenon of the photoreceptor by obtaining both light sources for exposure and charged charge erasing by the use of filters from the same light source. CONSTITUTION:A reflector 4 mounted with a red color filter 5 of cylindrical form and a filter 6 which transmits light of wavelengths shorter than 650mm is disposed concentrically to a light source 3 consisting of a halogen lamp or fluorescent lamp. As a result of this, at the time when the photosensitive drum 1 passes a charging electrode 2 after the light of the light source 3 transmits through the filter 5 and is radiated onto the photosensitive drum 1 rotating in the arrow A direction to perfectly erase the charged charges on the photosensitive drum 1 and clean the photosensitive drum 1, electrostatic charges are given on its surface, after which the light images of the original platen 7 radiated through the filter 6 by the light from the light source 3 are formed through a Selfoc 8, whereby the electrostatic latent images are formed. Since the wavelengths of the light source for charged charge erasing and exposure vary, the fatigue phenomenon of the photoreceptor becomes difficult to occur.
JP1938279A 1979-02-21 1979-02-21 Light radiation method to electrophotographic photoreceptor Pending JPS55111967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1938279A JPS55111967A (en) 1979-02-21 1979-02-21 Light radiation method to electrophotographic photoreceptor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1938279A JPS55111967A (en) 1979-02-21 1979-02-21 Light radiation method to electrophotographic photoreceptor

Publications (1)

Publication Number Publication Date
JPS55111967A true JPS55111967A (en) 1980-08-29

Family

ID=11997750

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1938279A Pending JPS55111967A (en) 1979-02-21 1979-02-21 Light radiation method to electrophotographic photoreceptor

Country Status (1)

Country Link
JP (1) JPS55111967A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6151187A (en) * 1984-08-21 1986-03-13 Canon Inc Electrophotographic device
DE4237236A1 (en) * 1992-10-08 1994-05-05 Umax Data System Inc Cylindrical color filter drive device for an optical reading device
US6332064B1 (en) * 1998-07-06 2001-12-18 Oki Data Corporation Image forming apparatus including a charging power supply and a neutralizing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6151187A (en) * 1984-08-21 1986-03-13 Canon Inc Electrophotographic device
DE4237236A1 (en) * 1992-10-08 1994-05-05 Umax Data System Inc Cylindrical color filter drive device for an optical reading device
US6332064B1 (en) * 1998-07-06 2001-12-18 Oki Data Corporation Image forming apparatus including a charging power supply and a neutralizing device

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