GB1478382A - Pressure-fixable developing powder - Google Patents

Pressure-fixable developing powder

Info

Publication number
GB1478382A
GB1478382A GB2890174A GB2890174A GB1478382A GB 1478382 A GB1478382 A GB 1478382A GB 2890174 A GB2890174 A GB 2890174A GB 2890174 A GB2890174 A GB 2890174A GB 1478382 A GB1478382 A GB 1478382A
Authority
GB
United Kingdom
Prior art keywords
mho
particles
conductive particles
electrically conductive
binder material
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
GB2890174A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1478382A publication Critical patent/GB1478382A/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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/0819—Developers with toner particles characterised by the dimensions of the particles
    • 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
    • G03G9/0821—Developers with toner particles characterised by physical parameters
    • 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
    • G03G9/0821—Developers with toner particles characterised by physical parameters
    • G03G9/0823—Electric parameters
    • 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
    • G03G9/08702—Binders for toner particles comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • G03G9/08704—Polyalkenes
    • 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
    • G03G9/08775—Natural macromolecular compounds or derivatives thereof
    • G03G9/08782—Waxes
    • 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
    • G03G9/097—Plasticisers; Charge controlling agents
    • G03G9/09708—Inorganic compounds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

1478382 Pressure-fixable electrographic developer powder MINNESOTA MINING & Mfg CO 28 June 1974 [29 June 1973] 28901/74 Heading G2H The developer is a flowable dry powder comprising thermoplastic, spheroidal particles, the binder material of which has a conductivity of at most 10<SP>-12</SP> mho/cm and which comprises (a) 50 to 100 parts by weight of a wax component having a melting point between 45‹C and 150‹C, and (b) 2 to 50 parts by weight of thermoplastic resin having a softening point above 60‹C, wherein electrically conductive particles are firmly anchored in the binder material at least on or near the surface region of the spheroidal particles, the electrically conductive particles having a conductivity of at least 10<SP>-2</SP>mho/cm and an average diameter below 100 millimicrons and wherein the essentially spheroidal particles exhibit: (a) an electrical conductivity ranging monatonically without decreasing from between 10<SP>-11</SP> and 10<SP>-4</SP> mho/cm in a 100v/cm DC electrical field to between 10<SP>-8</SP> and 10<SP>-3</SP>mho/cm in a 10,000v/cm DC electrical field, (b) an average particle diameter below 20 microns, and (c) a ratio of the volume of the electrically conductive particles to the total particle volume of between 0À01/100 and 4/100. The binder material may include other materials, e.g. magnetically permeable particles such as magnetite. The conductive particles may comprise carbon black. A flow agent, such as finely divided silica, may be mixed with the developer powder.
GB2890174A 1973-06-29 1974-06-28 Pressure-fixable developing powder Expired GB1478382A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US375169A US3925219A (en) 1973-06-29 1973-06-29 Pressure-fixable developing powder containing a thermoplastic resin and wax

Publications (1)

Publication Number Publication Date
GB1478382A true GB1478382A (en) 1977-06-29

Family

ID=23479777

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2890174A Expired GB1478382A (en) 1973-06-29 1974-06-28 Pressure-fixable developing powder

Country Status (6)

Country Link
US (1) US3925219A (en)
JP (1) JPS5820027B2 (en)
CA (1) CA1032394A (en)
DE (1) DE2431200A1 (en)
FR (1) FR2235404B1 (en)
GB (1) GB1478382A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194069A (en) * 1986-08-19 1988-02-24 Keisuke Hirai Negative-electrification finely-divided toner for use in production of erasable electrophotographic image

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2352604B2 (en) * 1972-10-21 1980-09-11 Konishiroku Photo Industry Co., Ltd., Tokio Toner for electrostatographic dry developers
JPS5725833B2 (en) * 1974-09-25 1982-06-01
JPS585426B2 (en) * 1974-12-12 1983-01-31 株式会社リコー Pressure fixing toner powder
US4189390A (en) * 1975-02-21 1980-02-19 Hitachi Metals, Ltd. One-component magnetic developer powder for developing electrostatic latent image and method of making same
ZA765807B (en) * 1975-10-07 1977-09-28 Sublistatic Holding Sa Developers
JPS5252639A (en) * 1975-10-27 1977-04-27 Mita Ind Co Ltd Electrostatic photographic developer
US4082681A (en) * 1975-11-04 1978-04-04 Mita Industrial Company Magnetic developer for electrostatic photography and process for preparation thereof
CH611438A5 (en) * 1976-07-01 1979-05-31 Sublistatic Holding Sa
JPS5289928A (en) * 1976-01-22 1977-07-28 Mita Industrial Co Ltd Pressure fixing developing agent for electrostatography
US4104066A (en) * 1976-03-01 1978-08-01 Xerox Corporation Cold pressure fix toners from polycaprolactone
JPS52119231A (en) * 1976-03-31 1977-10-06 Hitachi Metals Ltd Fixing toner composition for electrostatic charge pattern
DE2627123A1 (en) * 1976-06-16 1977-12-29 Minnesota Mining & Mfg Pressure-fixable electrophotographic toner powder - contg. 2 binder components with different shear creep compliance
JPS53104238A (en) * 1977-02-23 1978-09-11 Hitachi Metals Ltd Toner composite for use in electric charge image
US4345013A (en) * 1977-02-28 1982-08-17 Black Copy Company, Inc. Dual purpose magnetic toner
JPS53132352A (en) * 1977-04-22 1978-11-18 Sharp Corp Electrophotographic copier
US4419430A (en) * 1977-05-23 1983-12-06 Ani-Live Film Service, Inc. Dry transfer of electrophotographic images
JPS542741A (en) * 1977-06-08 1979-01-10 Canon Inc Pressure fixing toner
JPS6038699B2 (en) * 1977-09-14 1985-09-02 富士ゼロックス株式会社 electrostatic image developer
JPS5846019B2 (en) * 1978-03-23 1983-10-13 日立金属株式会社 magnetic toner
JPS556308A (en) * 1978-06-28 1980-01-17 Hitachi Metals Ltd Magnetic toner composition for electrostatic transfer
JPS5560960A (en) * 1978-10-31 1980-05-08 Agfa Gevaert Nv Composition for developing electrostatic image and method of development
US4379825A (en) * 1980-02-14 1983-04-12 Canon Kabushiki Kaisha Porous electrophotographic toner and preparation process of making
JPS56140356A (en) * 1980-04-03 1981-11-02 Toray Ind Inc Dry toner
DE3029317A1 (en) * 1980-08-01 1982-03-04 Martin 8000 München Lehmann Posters or displays produced with photosensitive colloid coating - on thermoplastics sheet by exposure and wash off then application of colouring to removed areas
JPS57138650A (en) * 1981-02-23 1982-08-27 Mita Ind Co Ltd Dry type developer for electrostaitc image and its manufacture
DE3208635C2 (en) * 1981-03-10 1986-11-20 Canon K.K., Tokio/Tokyo Electrophotographic developer and process for its manufacture
NL8104307A (en) * 1981-09-18 1983-04-18 Oce Nederland Bv COLORED TONER POWDER, A METHOD FOR ITS PREPARATION AND A METHOD FOR DEVELOPING IMAGES WITH THIS POWDER.
JPS6025784B2 (en) * 1981-12-22 1985-06-20 山陽国策パルプ株式会社 Recording paper that suppresses the amount of curling
JPS5926740A (en) * 1982-08-04 1984-02-13 Mita Ind Co Ltd Electrophotographic pressure-fixable toner and its manufacture
US4656111A (en) * 1983-04-12 1987-04-07 Canon Kabushiki Kaisha Pressure-fixable toner comprising combination of a compound having hydrocarbon chain and a compound having amino group
EP0281720B1 (en) * 1985-02-05 1992-01-22 Sicpa Holding S.A. Printing ink in dry, powdered form
JPS6143756A (en) * 1985-08-09 1986-03-03 Konishiroku Photo Ind Co Ltd Electrostatic latent image developer
US4636451A (en) * 1986-02-13 1987-01-13 Minnesota Mining And Manufacturing Company Pressure-fixable toner material and method of making same
US4745418A (en) * 1986-04-30 1988-05-17 Minnesota Mining And Manufacturing Company Reusable developing powder composition
JPS61281251A (en) * 1986-05-16 1986-12-11 Konishiroku Photo Ind Co Ltd One component type insulating magnetic toner and electrostatic charging method for its magnetic toner
US4859559A (en) * 1987-03-18 1989-08-22 E. I. Du Pont De Nemours And Company Hydroxycarboxylic acids as adjuvants for negative liquid electrostatic developers
NL9000268A (en) * 1990-02-05 1991-09-02 Oce Nederland Bv Doped tin oxide powder, a process for its preparation, and its use in electrically conductive or anti-static coatings.
US5124222A (en) * 1990-09-27 1992-06-23 Nashua Corporation Toner and developer compositions having cleaning and lubricating additives
JPH0782253B2 (en) * 1990-12-14 1995-09-06 富士ゼロックス株式会社 Method for producing electrostatic image toner
US5914209A (en) * 1991-05-20 1999-06-22 Xerox Corporation Single development toner for improved MICR
US5679491A (en) * 1995-12-07 1997-10-21 Konica Corporation Toner used for developing an electrostatic charge image
US5709740A (en) * 1996-02-23 1998-01-20 Hoechst Celanese Corp. Thermally expandable, viscosity modified wax compositions and method of use in actuators
US6228133B1 (en) * 1998-05-01 2001-05-08 3M Innovative Properties Company Abrasive articles having abrasive layer bond system derived from solid, dry-coated binder precursor particles having a fusible, radiation curable component

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE594137A (en) * 1959-08-17
GB1210665A (en) * 1966-11-23 1970-10-28 Addressograph Multigraph Photoelectrostatic developing material
NL159795C (en) * 1968-07-22 Minnesota Mining & Mfg
BE756224A (en) * 1969-09-23 1971-03-01 Teletype Corp ELECTROSTATIC INK AND PRINTING APPARATUS
US3775326A (en) * 1972-04-17 1973-11-27 Addressograph Multigraph Pressure fixable electroscopic printing powder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194069A (en) * 1986-08-19 1988-02-24 Keisuke Hirai Negative-electrification finely-divided toner for use in production of erasable electrophotographic image

Also Published As

Publication number Publication date
DE2431200A1 (en) 1975-01-09
US3925219A (en) 1975-12-09
FR2235404B1 (en) 1979-05-25
FR2235404A1 (en) 1975-01-24
CA1032394A (en) 1978-06-06
JPS5050042A (en) 1975-05-06
JPS5820027B2 (en) 1983-04-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee