JPS5499442A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5499442A
JPS5499442A JP529478A JP529478A JPS5499442A JP S5499442 A JPS5499442 A JP S5499442A JP 529478 A JP529478 A JP 529478A JP 529478 A JP529478 A JP 529478A JP S5499442 A JPS5499442 A JP S5499442A
Authority
JP
Japan
Prior art keywords
photoreceptor
effective width
effective
toner
occur
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
JP529478A
Other languages
Japanese (ja)
Other versions
JPS6238702B2 (en
Inventor
Akira Shimura
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 JP529478A priority Critical patent/JPS5499442A/en
Publication of JPS5499442A publication Critical patent/JPS5499442A/en
Publication of JPS6238702B2 publication Critical patent/JPS6238702B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE: To develop only the effective width of a photoreceptor and prevent the contamination of transfer paper by setting the length of a developing electrode at the same as the effective width of the photoreceptor or approximately shorter in an electrophotographic apparatus of performing reversal development of the electrostatic latent images of the photoreceptor.
CONSTITUTION: In an embodiment of using an OFT 4 for exposure system and performing reversal development through wet type development in a developing part 5, the length of a developing electrode 2 is matched to the effective width of a photoreceptor drum 1, i.e., effective part A of the photoreceptor or is set approximately shorter. Hence, deposition of toner on the effective width end part B of the photoreceptor or non-photoreceptor part C does not occur and therefore even if the width of the transfer paper 13 is large, contaminating of its portions in contact with the effective width end part B and non-photoreceptor part C by the toner will not occur.
COPYRIGHT: (C)1979,JPO&Japio
JP529478A 1978-01-23 1978-01-23 Developing device Granted JPS5499442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP529478A JPS5499442A (en) 1978-01-23 1978-01-23 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP529478A JPS5499442A (en) 1978-01-23 1978-01-23 Developing device

Publications (2)

Publication Number Publication Date
JPS5499442A true JPS5499442A (en) 1979-08-06
JPS6238702B2 JPS6238702B2 (en) 1987-08-19

Family

ID=11607216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP529478A Granted JPS5499442A (en) 1978-01-23 1978-01-23 Developing device

Country Status (1)

Country Link
JP (1) JPS5499442A (en)

Also Published As

Publication number Publication date
JPS6238702B2 (en) 1987-08-19

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