JPS57173867A - Magnet roll and its manufacture - Google Patents

Magnet roll and its manufacture

Info

Publication number
JPS57173867A
JPS57173867A JP5995881A JP5995881A JPS57173867A JP S57173867 A JPS57173867 A JP S57173867A JP 5995881 A JP5995881 A JP 5995881A JP 5995881 A JP5995881 A JP 5995881A JP S57173867 A JPS57173867 A JP S57173867A
Authority
JP
Japan
Prior art keywords
bar
developer
roll
hole
magnet body
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
JP5995881A
Other languages
Japanese (ja)
Inventor
Kunio Okumura
Yasuo Fukuyama
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.)
YAMAUCHI GOMU KOGYO KK
Yamauchi Rubber Industry Co Ltd
Original Assignee
YAMAUCHI GOMU KOGYO KK
Yamauchi Rubber Industry 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 YAMAUCHI GOMU KOGYO KK, Yamauchi Rubber Industry Co Ltd filed Critical YAMAUCHI GOMU KOGYO KK
Priority to JP5995881A priority Critical patent/JPS57173867A/en
Priority to CA000400935A priority patent/CA1198766A/en
Priority to US06/368,998 priority patent/US4517719A/en
Priority to EP82103277A priority patent/EP0063377B1/en
Priority to DE8282103277T priority patent/DE3272271D1/en
Priority to DK175882A priority patent/DK156498C/en
Publication of JPS57173867A publication Critical patent/JPS57173867A/en
Priority to US06/692,681 priority patent/US4640808A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration

Abstract

PURPOSE:To obtain a roll which can be manufactured easily and can be handled easily by a simple constitution, by consituting so that a bar-like magnet body for attracting a developer such as a mgnetic toner, etc., and a bar-like or plate-like magnet body holding a developer are held in the circumference of a roll shaft by use of a holding layer made of synthetic resin having specific hardness. CONSTITUTION:A metallic mold 12 having a round hole 17 is placed on a metallic mold 11 provided with a cylindrical base 14 which has an insertion hole 15 of a roll shaft 1 in the center part, and has each insertion hole 16 of a bar-like magnet body 2 for attracting the developer and a bar-like magnet body 3 holding the developer in the circmference of said hole 15, and the roll shaft 1 and said bar-like magnet bodies 2, 3, on which an adhesive agent has been applied are inserted into each insertion hole of the base 14 and are erected. Subsequently, an upper metallic mold 13 which is provided with a cylindrical base 18 of the same type as the lower metallic mold 11 and has a resin injection hole 21 is placed, and all the metallic molds are sealed tightly. Subsequently, its heating and hardening are executed by injecting reaction injection molding foamed urethane, etc. from the injection hole 21. When a magnet roll 5 obtained in this way is concentrically inserted through a sleeve 6 made of Al, etc. and is tightly stuck, a magnetic brush developing roll 10 is completed.
JP5995881A 1981-04-20 1981-04-20 Magnet roll and its manufacture Pending JPS57173867A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP5995881A JPS57173867A (en) 1981-04-20 1981-04-20 Magnet roll and its manufacture
CA000400935A CA1198766A (en) 1981-04-20 1982-04-14 Magnetic rolls and a method of making the same
US06/368,998 US4517719A (en) 1981-04-20 1982-04-16 Magnetic rolls for electrostatic recording devices
EP82103277A EP0063377B1 (en) 1981-04-20 1982-04-19 Magnetic rolls and a method of making the same
DE8282103277T DE3272271D1 (en) 1981-04-20 1982-04-19 Magnetic rolls and a method of making the same
DK175882A DK156498C (en) 1981-04-20 1982-04-20 MAGNETIC ROLL FOR AN ELECTROSTATIC REPRESENTATION SYSTEM
US06/692,681 US4640808A (en) 1981-04-20 1985-01-18 Method for making magnetic rolls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5995881A JPS57173867A (en) 1981-04-20 1981-04-20 Magnet roll and its manufacture

Publications (1)

Publication Number Publication Date
JPS57173867A true JPS57173867A (en) 1982-10-26

Family

ID=13128167

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5995881A Pending JPS57173867A (en) 1981-04-20 1981-04-20 Magnet roll and its manufacture

Country Status (1)

Country Link
JP (1) JPS57173867A (en)

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