JPS5526529A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS5526529A
JPS5526529A JP9934978A JP9934978A JPS5526529A JP S5526529 A JPS5526529 A JP S5526529A JP 9934978 A JP9934978 A JP 9934978A JP 9934978 A JP9934978 A JP 9934978A JP S5526529 A JPS5526529 A JP S5526529A
Authority
JP
Japan
Prior art keywords
axial length
photosensitive material
sleeve
permanent magnet
drum
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
JP9934978A
Other languages
Japanese (ja)
Inventor
Koji Noguchi
Keitaro Yamashita
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.)
Proterial Ltd
Original Assignee
Hitachi Metals 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 Hitachi Metals Ltd filed Critical Hitachi Metals Ltd
Priority to JP9934978A priority Critical patent/JPS5526529A/en
Publication of JPS5526529A publication Critical patent/JPS5526529A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To make conduction constant and eliminate the occurrence of uneven development by making the axial length of the permanent magnet to be mounted in an insulation sleeve shorter than the axial length or a circular cylindrical drum and longer than the axial length of photosensitive material.
CONSTITUTION: Photosensitive material 2 is coated to a conductive circular cylindrical drum 1 by the width of l1. A plastic-made sleeve 4 is built in with a permanent magnet 5 to convey magnetic toner 7 to the drum 1 and rub the electrostatic latent images formed on the photosensitive material 2. The axial length l2 of the circular cylindrical permanent magnet 5, the axial length l3 of the sleeve 4 and the axial length of the photosensitive material 2 are made l1<l2≤l3. Since the sleeve 4 is non-conductive, the production of flaws by the magnetic toner is obviated and corrosion by air and moisture does not occur. In addition, conduction is accomplished directly to the drum substrate, not by the formation of a conductive path by shaft and frame and therefore there are no troubles and since the conduction constant is maintained constant, there is not occurrence of uneven development or the like.
COPYRIGHT: (C)1980,JPO&Japio
JP9934978A 1978-08-15 1978-08-15 Magnetic brush developing device Pending JPS5526529A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9934978A JPS5526529A (en) 1978-08-15 1978-08-15 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9934978A JPS5526529A (en) 1978-08-15 1978-08-15 Magnetic brush developing device

Publications (1)

Publication Number Publication Date
JPS5526529A true JPS5526529A (en) 1980-02-26

Family

ID=14245127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9934978A Pending JPS5526529A (en) 1978-08-15 1978-08-15 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS5526529A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61220146A (en) * 1985-03-26 1986-09-30 Aiwa Co Ltd Optical pickup device
JPS6257135A (en) * 1985-09-05 1987-03-12 Pioneer Electronic Corp Pickup device in optical information recording and reproducing device
JPS6478441A (en) * 1987-09-18 1989-03-23 Sanyo Electric Co Optical pickup device
CN102073249A (en) * 2011-01-21 2011-05-25 珠海天威飞马打印耗材有限公司 Magnetic roller and processing box

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61220146A (en) * 1985-03-26 1986-09-30 Aiwa Co Ltd Optical pickup device
JPS6257135A (en) * 1985-09-05 1987-03-12 Pioneer Electronic Corp Pickup device in optical information recording and reproducing device
JPS6478441A (en) * 1987-09-18 1989-03-23 Sanyo Electric Co Optical pickup device
CN102073249A (en) * 2011-01-21 2011-05-25 珠海天威飞马打印耗材有限公司 Magnetic roller and processing box

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