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GB1391661A - Toner powder and its use in electrophotographic copying processes - Google Patents

Toner powder and its use in electrophotographic copying processes

Info

Publication number
GB1391661A
GB1391661A GB285572A GB285572A GB1391661A GB 1391661 A GB1391661 A GB 1391661A GB 285572 A GB285572 A GB 285572A GB 285572 A GB285572 A GB 285572A GB 1391661 A GB1391661 A GB 1391661A
Authority
GB
United Kingdom
Prior art keywords
toner
image
developer
paper
carrier
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
GB285572A
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.)
Canon Production Printing Holding BV
Original Assignee
Oce Van der Grinten NV
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 Oce Van der Grinten NV filed Critical Oce Van der Grinten NV
Priority to GB285572A priority Critical patent/GB1391661A/en
Priority to FR7301884A priority patent/FR2156414B1/fr
Publication of GB1391661A publication Critical patent/GB1391661A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y15/00—Nanotechnology for interacting, sensing or actuating, e.g. quantum dots as markers in protein assays or molecular motors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/1075—Structural characteristics of the carrier particles, e.g. shape or crystallographic structure
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/06—Developing
    • G03G13/08—Developing using a solid developer, e.g. powder developer
    • G03G13/09—Developing using a solid developer, e.g. powder developer using magnetic brush
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/087—Binders for toner particles
    • G03G9/08742—Binders for toner particles comprising macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/08766—Polyamides, e.g. polyesteramides
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/1087—Specified elemental magnetic metal or alloy, e.g. alnico comprising iron, nickel, cobalt, and aluminum, or permalloy comprising iron and nickel

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nanotechnology (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

1391661 Electrographic developer OCE-VAN DER GRINTEN NV 19 Jan 1973 [20 Jan 1972] 2855/72 Heading G2H [Also in Division C3] In an electro-photographic process for making copies on paper, a two-component developer powder is used, comprising magnetically attractable carrier particles and a toner. The toner of particle size < 40 Ám comprises by 1-10 wt per cent colouring matter and 99-90% of a mixture of two polyamides (P 1 and P 2 ) each derived from an alkylene diamine and a dimerized unsaturated carboxylic acid, the m.p. of (P 1 ) being 100-125‹C and of (P 2 ) being 175-200‹C, the wt. ratio (P 1 )/ (P 2 ) being from 4 to 3. The colouring matter is preferably a mixture of C black and nigrosine. The toner may have particle size 2-40 Ám. The carrier particles may be of size 40-200 Ám. They may be spherical hollow Fe particles. The developer preferably contains by weight 4-6 parts toner and 96-94 parts carrier, and can be replenished during copying with a 1 : 1 mix of toner and carrier. The process comprises integrally projecting an image of a static original on a negatively-charged photoconductive layer, e.g. containing ZnO coated on a flexible support e.g. paper shaped as a zig zag folded endless belt, continuously moving at # 5 m/min, developing the latent charge image with the developer by the magnetic brush method, transferring the powder image to a receiving paper under the influence of an electric field and fixing the image on the paper e.g. by heating to 125- 150‹C and cleaning the photo-conductive layer after the transfer of the powder image.
GB285572A 1972-02-20 1972-02-20 Toner powder and its use in electrophotographic copying processes Expired GB1391661A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB285572A GB1391661A (en) 1972-02-20 1972-02-20 Toner powder and its use in electrophotographic copying processes
FR7301884A FR2156414B1 (en) 1972-02-20 1973-01-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB285572A GB1391661A (en) 1972-02-20 1972-02-20 Toner powder and its use in electrophotographic copying processes

Publications (1)

Publication Number Publication Date
GB1391661A true GB1391661A (en) 1975-04-23

Family

ID=9747245

Family Applications (1)

Application Number Title Priority Date Filing Date
GB285572A Expired GB1391661A (en) 1972-02-20 1972-02-20 Toner powder and its use in electrophotographic copying processes

Country Status (2)

Country Link
FR (1) FR2156414B1 (en)
GB (1) GB1391661A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1147192A (en) * 1978-04-06 1983-05-31 John L. Webb Electrostatographic developer including toner of diameter between 3 and 15 microns and carrier of diameter between 15 and 65 microns
JP2005528483A (en) * 2002-05-01 2005-09-22 チバ　スペシャルティ　ケミカルズ　ホールディング　インコーポレーテッド Pigment preparation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL297491A (en) * 1962-09-06 1900-01-01
GB1211208A (en) * 1967-10-31 1970-11-04 Addressograph Multigraph Electrophotographic developer mixes

Also Published As

Publication number Publication date
FR2156414B1 (en) 1977-01-07
FR2156414A1 (en) 1973-05-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee