GB1071697A - Magnetic roller for use in the development of latent electrostatic images - Google Patents

Magnetic roller for use in the development of latent electrostatic images

Info

Publication number
GB1071697A
GB1071697A GB51423/64A GB5142364A GB1071697A GB 1071697 A GB1071697 A GB 1071697A GB 51423/64 A GB51423/64 A GB 51423/64A GB 5142364 A GB5142364 A GB 5142364A GB 1071697 A GB1071697 A GB 1071697A
Authority
GB
United Kingdom
Prior art keywords
magnetized
shell
core
magnets
magnetic
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.)
Expired
Application number
GB51423/64A
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.)
Kalle GmbH and Co KG
Original Assignee
Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
Publication of GB1071697A publication Critical patent/GB1071697A/en
Expired 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0268—Magnetic cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S100/00—Presses
    • Y10S100/917—Magnetic

Abstract

1,071,697. Rollers. KALLE A.G. Dec. 17, 1964 [Dec. 18, 1963], No. 51423/64. Heading F2U. [Also in Division G2] A magnetic roller, for use in developing electrostatic images, has pole shoes 1 of soft iron separated by strips 2 of non-magnetic material forming a tubular shell. A core formed by a round bar 3 of soft iron, has permanent magnets 4 magnetized, so that the poles facing the shell are of alternate N and S polarity, the magnets being spaced apart by non-magnetic material. The core is rotatable relatively to the shell. In the position shown, a permanent magnet is positioned under each shoe 1, such that the lines of force 6 extend outside the shoes, thereby attracting developer having a magnetic carrier. In the Fig. 2 (not shown) position, the magnets 4 are each opposite a strip 2 and the roller does not attract developer. The relative rotation between the core and shell may be effected automatically e.g. as a result of movement of an image carrying surface. In a modification, Fig. 3 (not shown) a curved sheet (12) of highly permeable metal is held in a fixed position, so that adjacent pole shoes are not magnetized. The cores may alternatively be formed by a sleeve (17), Fig. 4 (not shown) magnetized radially or by a rod (18), Fig. 5 (not shown) circumferentially magnetized.
GB51423/64A 1963-12-18 1964-12-17 Magnetic roller for use in the development of latent electrostatic images Expired GB1071697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK0051671 1963-12-18

Publications (1)

Publication Number Publication Date
GB1071697A true GB1071697A (en) 1967-06-14

Family

ID=7226081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB51423/64A Expired GB1071697A (en) 1963-12-18 1964-12-17 Magnetic roller for use in the development of latent electrostatic images

Country Status (7)

Country Link
US (1) US3392432A (en)
AT (1) AT257360B (en)
BE (1) BE657154A (en)
CH (1) CH427505A (en)
DE (1) DE1472993B2 (en)
GB (1) GB1071697A (en)
NL (1) NL151811B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455276A (en) * 1967-05-23 1969-07-15 Minnesota Mining & Mfg Magnetically responsive powder applicator
EP0208166A1 (en) * 1985-06-17 1987-01-14 EASTMAN KODAK COMPANY (a New Jersey corporation) Magnetic brush apparatus for developing electrostatic images

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3552355A (en) * 1968-04-22 1971-01-05 Xerox Corp Development apparatus
US3570453A (en) * 1968-08-07 1971-03-16 Xerox Corp Development apparatus
US3574301A (en) * 1969-04-02 1971-04-13 Xerox Corp Developing apparatus
BE759074A (en) * 1969-05-29 1971-05-18 Int Standard Electric Corp DEVICE AND METHOD FOR HANDLING MAGNETIC POWDER
US3575139A (en) * 1969-06-04 1971-04-20 Xerox Corp Electrostatic magnetic developer unit gating apparatus
DE2052835A1 (en) * 1969-10-20 1971-05-06 Minnesota Mining & Mfg Device for applying a magnetizable powder to a base
BE757698A (en) * 1969-10-20 1971-04-19 Xerox Corp DEVELOPMENT APPARATUS
US3828730A (en) * 1971-05-21 1974-08-13 Hitachi Metals Ltd Electrostatic record developing apparatus
GB1359381A (en) * 1971-05-21 1974-07-10 Hitachi Metals Ltd Electrostatic record developing apparatus
JPS5426172B2 (en) * 1973-05-23 1979-09-03
US3939801A (en) * 1973-09-10 1976-02-24 Minolta Camera Kabushiki Kaisha Magnetic brush developing apparatus
US3859959A (en) * 1974-04-05 1975-01-14 Data Interface Magnetic toner applicator
US4171900A (en) * 1975-03-13 1979-10-23 Brugger Richard D Copying machine
US3977361A (en) * 1975-05-13 1976-08-31 Fuji Xerox Co., Ltd. Magnetic brush developing device
NL7512356A (en) * 1975-10-22 1977-04-26 Oce Van Der Grinten Nv MAGNET ROLL.
FI52394C (en) * 1975-12-31 1977-08-10 Valmet Oy Bending compensated, end-loaded roller, in particular a press roll in a paper machine.
DE2646784C3 (en) * 1976-10-16 1980-02-28 Heinrich Dr.-Ing. 4714 Selm Spodig Permanent magnetic adhesive plate
US4266868A (en) * 1979-07-16 1981-05-12 Minnesota Mining And Manufacturing Company Multiple roll developing apparatus
US4330193A (en) * 1979-10-01 1982-05-18 Xerox Corporation Development system
US4303331A (en) * 1979-11-05 1981-12-01 Xerox Corporation Magnet for use in a magnetic brush development system
US4318606A (en) * 1980-01-21 1982-03-09 Burroughs Corporation Magnetic toner imaging-multiplexing apparatus
US4318607A (en) * 1980-07-14 1982-03-09 Xerox Corporation Magnet for a development system
US4549155A (en) * 1982-09-20 1985-10-22 The United States Of America As Represented By The United States Department Of Energy Permanent magnet multipole with adjustable strength
US4727823A (en) * 1985-05-28 1988-03-01 Xerox Corporation Magnetic roll structure for transporting single component magnetic developer
DE3637200A1 (en) * 1986-10-31 1988-05-05 Kloeckner Humboldt Deutz Ag MAGNETIC BLOCK ARRANGEMENT WITH OUTSIDE FIELD
US4811046A (en) * 1987-07-28 1989-03-07 Xerox Corporation Tri-level highlight color printing apparatus with cycle-up and cycle-down control
US5359399A (en) * 1993-08-12 1994-10-25 Xerox Corporation Hybrid scavengeless developer unit having a magnetic transport roller
WO2007033437A1 (en) * 2005-09-26 2007-03-29 Magswitch Technology Worldwide Pty Ltd Magnet arrays

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE191492C (en) *
CA507101A (en) * 1954-11-09 Spodig Heinrich Permanent magnetic separating rollers
US2177809A (en) * 1937-05-05 1939-10-31 Queneau Augustin Leon Jean Apparatus for magnetically separating materials
US2968402A (en) * 1949-10-06 1961-01-17 Spodig Heinrich Magnetic separator
US2717080A (en) * 1951-11-26 1955-09-06 Sundstrand Magnetic Products C Magnetic separator
US2786440A (en) * 1953-06-30 1957-03-26 Rca Corp Electrophotographic developing apparatus
US3040704A (en) * 1957-04-16 1962-06-26 Rca Corp Apparatus for developing electrostatic printing
US3098765A (en) * 1959-03-16 1963-07-23 Robertson Photo Mechanix Inc Xerographic brush
US3152924A (en) * 1961-05-24 1964-10-13 Robertson Photo Mechanix Inc Xerographic brush

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3455276A (en) * 1967-05-23 1969-07-15 Minnesota Mining & Mfg Magnetically responsive powder applicator
EP0208166A1 (en) * 1985-06-17 1987-01-14 EASTMAN KODAK COMPANY (a New Jersey corporation) Magnetic brush apparatus for developing electrostatic images

Also Published As

Publication number Publication date
BE657154A (en) 1965-06-15
DE1472993A1 (en) 1969-05-08
AT257360B (en) 1967-10-10
NL151811B (en) 1976-12-15
NL6414250A (en) 1965-06-21
DE1472993B2 (en) 1972-02-17
CH427505A (en) 1966-12-31
US3392432A (en) 1968-07-16

Similar Documents

Publication Publication Date Title
GB1071697A (en) Magnetic roller for use in the development of latent electrostatic images
GB1263566A (en) Apparatus and method for developing an electrostatic latent image
JPS55126266A (en) Electrophotographic method
GB1377023A (en) Developing electrostatic latent images
GB1510654A (en) Magnetic brush developing device
GB1508690A (en) Magnetic roller
GB1443667A (en) Magnetic brush type developing mechanism for an electrophoto graphic copying machine
GB1480087A (en) Development apparatus
GB2001556A (en) Magnetic brush developing apparatus
GB1347138A (en) Magnetic brush development apparatus
JPS54143237A (en) Electrostatic latent image developing apparatus
GB1405564A (en) Magnetic brush for use in developing electrophotographic images
JPS55113073A (en) Magnetic brush developing device
GB1449322A (en) Magnetic brush development apparatus
GB1359381A (en) Electrostatic record developing apparatus
JPS5730859A (en) Magnetic brush developing device
UST959003I4 (en) Electrostatic process development apparatus
GB1342684A (en) Apparatus for agitating developer material within a housing
JPS58149078A (en) Developing device of magnetic brush type
GB2001873A (en) Magnetic brush developing device
JPS5359433A (en) Developing device for electrostatic latent image
JPS52105832A (en) Developing apparatus
ES8600816A1 (en) Development apparatus for latent magnetic images.
JPS5258546A (en) Development device for electrophotography
JPS55157768A (en) Magnetic latent image developing device