EP0594945A1 - Fluorkohlenwasserstoffgeschmierte Tonerteilchen für Drucker - Google Patents

Fluorkohlenwasserstoffgeschmierte Tonerteilchen für Drucker Download PDF

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Publication number
EP0594945A1
EP0594945A1 EP93110126A EP93110126A EP0594945A1 EP 0594945 A1 EP0594945 A1 EP 0594945A1 EP 93110126 A EP93110126 A EP 93110126A EP 93110126 A EP93110126 A EP 93110126A EP 0594945 A1 EP0594945 A1 EP 0594945A1
Authority
EP
European Patent Office
Prior art keywords
toner particles
solvent
toner
oil
fluorocarbon
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.)
Granted
Application number
EP93110126A
Other languages
English (en)
French (fr)
Other versions
EP0594945B1 (de
Inventor
John H. Stewart
Dennis P. Davidson
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.)
HP Inc
Original Assignee
Hewlett Packard 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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of EP0594945A1 publication Critical patent/EP0594945A1/de
Application granted granted Critical
Publication of EP0594945B1 publication Critical patent/EP0594945B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03G9/0802—Preparation methods
    • 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
    • G03G9/0825—Developers with toner particles characterised by their structure; characterised by non-homogenuous distribution of components
    • 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
    • G03G9/08759—Polyethers
    • 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
    • G03G9/09733—Organic compounds
    • G03G9/09766—Organic compounds comprising fluorine

Definitions

  • This invention relates to electrophotography and, more particularly, to electrophotographic toners that are subjected to high wear environments.
  • an electrostatic charge image is formed on a dielectric surface, particularly the surface of a photoconductive drum. Development of this image is commonly achieved by contacting it with a two component developer comprising a mixture of toner particles and magnetically attractable particles known as carriers.
  • the carrier particles serve as sites against which the nonmagnetic toner particles can impinge and acquire a charge that is opposite to that of the electrostatic image.
  • the toner particles are stripped from the carrier particles by the relatively strong electrostatic forces associated with the charge image.
  • a method of coating toner particles with a fluoropolymer comprises the steps of: mixing polar toner particles with a mixture of a fluorocarbon oil and a perfluoro-alkane non-polar solvent; heating the mixture to an elevated temperature in an evacuated container, the temperature being less than the melting temperature of the toner particles; and agitating the mixture during the heating step to cause a coating of the particles with the fluorocarbon oil while the heating causes volatilization of the solvent.
  • the Fig. illustrates apparatus for carrying out the method of the invention.
  • Toner particles are coated with a fluorocarbon lubricant, preferably a perfluoro poly propoxy-methoxy oil.
  • a fluorocarbon lubricant preferably a perfluoro poly propoxy-methoxy oil.
  • a fluorocarbon lubricant preferably a perfluoro poly propoxy-methoxy oil.
  • Fomblin Y is a perfluoronated poly ether.
  • Fomblin Y has a low surface tension and, therefore, creates a very thin coating on the toner particles.
  • the fluorocarbon oil exhibits a low vapor pressure, is a good lubricant and is a liquid that can be easily applied to toner particles.
  • the process further employs a solvent for the fluorocarbon oil.
  • the chosen solvent must not attack the toner particles, and must exhibit a low boiling point.
  • a preferred solvent is perfluoro alkane, a non-polar solvent that does not attack polar surfaces of toner particles and is a good solvent for fluorocarbon oils.
  • the 3M Company, Commercial Chemicals Division, 223-6S-04 3M Center, Saint Paul, Minnesota 55144-1000 markets a perfluoro alkane solvent called "Fluorinert" which was employed in the development of the invention.
  • the preferred solvent is Fluorinert (FC-72) which is a C8 perfluoro alkane.
  • the mechanism used to carry out the invention was a "Rotavapor" system such as is shown in the Fig.
  • a mixture of toner particles, fluorocarbon lubricant and a perfluoro alkane solvent was emplaced in a flask 10 that was attached to a vacuum/drive system 12.
  • Flask 10 was immersed in a heating bath 14 that enabled an elevation of the temperature of the mixture contained in flask 10. The elevated temperature is sufficiently high to enhance volatilization of the solvent, but must not exceed the melting temperature of the toner particles.
  • Flask 10 is rotated by drive system 12 while simultaneously, a vacuum is applied to flask 10. During operation, the elevated temperature of flask 10 causes volatilization of the perfluoro alkane solvent, which solvent enters the cooling system 16 via tube 18. Within cooling system 16, the solvent condenses and precipitates into receiving flask 20.
  • a magnetic ink character recognition (MICR) toner e.g. a MICR toner that is a styrene-based monocomponent-type toner, obtained from the Canon Corporation, Japan was coated with perfluoro poly propoxy-methoxy oil (Fomblin Y). The coating was accomplished by adding either 15 or 300 micro liters of Fomblin Y to 200 mL of perfluoro alkane solvent (3M FC72). One hundred grams of the monocomponent toner was added to a 500 mL round bottom flask 10 (see Fig.). A mixture of the solvent and fluorocarbon lubricant was added to the flask.
  • MICR magnetic ink character recognition
  • the fluorocarbon oil was found to be stable and nonvolatile.
  • the toner operated successfully in the printer and the perfluoro alkane solvent used did not degrade the toner.
  • the print quality was equal to noncoated toner particles.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Developing Agents For Electrophotography (AREA)
EP19930110126 1992-10-21 1993-06-24 Fluorkohlenwasserstoffgeschmierte Tonerteilchen für Drucker Expired - Lifetime EP0594945B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US96432692A 1992-10-21 1992-10-21
US964326 1992-10-21

Publications (2)

Publication Number Publication Date
EP0594945A1 true EP0594945A1 (de) 1994-05-04
EP0594945B1 EP0594945B1 (de) 1998-12-16

Family

ID=25508417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930110126 Expired - Lifetime EP0594945B1 (de) 1992-10-21 1993-06-24 Fluorkohlenwasserstoffgeschmierte Tonerteilchen für Drucker

Country Status (3)

Country Link
EP (1) EP0594945B1 (de)
JP (1) JP3481280B2 (de)
DE (1) DE69322596T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6838114B2 (en) 2002-05-24 2005-01-04 Micron Technology, Inc. Methods for controlling gas pulsing in processes for depositing materials onto micro-device workpieces
US6955725B2 (en) 2002-08-15 2005-10-18 Micron Technology, Inc. Reactors with isolated gas connectors and methods for depositing materials onto micro-device workpieces
US6926775B2 (en) 2003-02-11 2005-08-09 Micron Technology, Inc. Reactors with isolated gas connectors and methods for depositing materials onto micro-device workpieces
US7581511B2 (en) 2003-10-10 2009-09-01 Micron Technology, Inc. Apparatus and methods for manufacturing microfeatures on workpieces using plasma vapor processes
US7584942B2 (en) 2004-03-31 2009-09-08 Micron Technology, Inc. Ampoules for producing a reaction gas and systems for depositing materials onto microfeature workpieces in reaction chambers
US8133554B2 (en) 2004-05-06 2012-03-13 Micron Technology, Inc. Methods for depositing material onto microfeature workpieces in reaction chambers and systems for depositing materials onto microfeature workpieces
JP2006285198A (ja) * 2005-03-09 2006-10-19 Hosokawa Funtai Gijutsu Kenkyusho:Kk トナー粒子、トナー粒子の製造装置及び製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386847A1 (fr) * 1977-04-07 1978-11-03 Mita Industrial Co Ltd Revelateur pour images electrostatiques
DE2940907A1 (de) * 1978-10-09 1980-04-10 Konishiroku Photo Ind Magnetischer toner
JPS5716460A (en) * 1980-07-02 1982-01-27 Sakata Shokai Ltd Preparation of powdery toner
US4369240A (en) * 1980-11-07 1983-01-18 E. I. Du Pont De Nemours And Company Element having images developed with dry nonelectroscopic toners
EP0303266A2 (de) * 1987-08-14 1989-02-15 E.I. Du Pont De Nemours And Company Nichtelektroskopische Toner mit einer Beschichtung aus organo-funktionell substituierten Fluorkohlenwasserstoffverbindungen
JPS6491141A (en) * 1987-10-02 1989-04-10 Konishiroku Photo Ind Electrostatic image developing toner
JPH0277759A (ja) * 1988-09-13 1990-03-16 Seiko Epson Corp トナーの製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386847A1 (fr) * 1977-04-07 1978-11-03 Mita Industrial Co Ltd Revelateur pour images electrostatiques
DE2940907A1 (de) * 1978-10-09 1980-04-10 Konishiroku Photo Ind Magnetischer toner
JPS5716460A (en) * 1980-07-02 1982-01-27 Sakata Shokai Ltd Preparation of powdery toner
US4369240A (en) * 1980-11-07 1983-01-18 E. I. Du Pont De Nemours And Company Element having images developed with dry nonelectroscopic toners
EP0303266A2 (de) * 1987-08-14 1989-02-15 E.I. Du Pont De Nemours And Company Nichtelektroskopische Toner mit einer Beschichtung aus organo-funktionell substituierten Fluorkohlenwasserstoffverbindungen
JPS6491141A (en) * 1987-10-02 1989-04-10 Konishiroku Photo Ind Electrostatic image developing toner
JPH0277759A (ja) * 1988-09-13 1990-03-16 Seiko Epson Corp トナーの製造方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 8210, Derwent World Patents Index; AN 82-18389E (10) *
DATABASE WPI Week 8920, Derwent World Patents Index; AN 89-147803 *
PATENT ABSTRACTS OF JAPAN vol. 14, no. 269 (P - 1059)<4212> 11 June 1990 (1990-06-11) *

Also Published As

Publication number Publication date
JPH06202372A (ja) 1994-07-22
DE69322596D1 (de) 1999-01-28
EP0594945B1 (de) 1998-12-16
JP3481280B2 (ja) 2003-12-22
DE69322596T2 (de) 1999-07-15

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