US3236639A - Two component partially removable electrophotographic developer powder and process for utilizing same - Google Patents

Two component partially removable electrophotographic developer powder and process for utilizing same Download PDF

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Publication number
US3236639A
US3236639A US50316A US5031660A US3236639A US 3236639 A US3236639 A US 3236639A US 50316 A US50316 A US 50316A US 5031660 A US5031660 A US 5031660A US 3236639 A US3236639 A US 3236639A
Authority
US
United States
Prior art keywords
toner
acid
toners
image
weight
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 - Lifetime
Application number
US50316A
Other languages
English (en)
Inventor
Tomanek Martha
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.)
Azoplate Corp
Original Assignee
Azoplate Corp
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 Azoplate Corp filed Critical Azoplate Corp
Application granted granted Critical
Publication of US3236639A publication Critical patent/US3236639A/en
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
    • 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
    • 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
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture

Definitions

  • resins of the types that may be used for the preparation of the positive toners may be added to the negative toners in quantities of up to 50% by weight.
  • proportions of the waxes and organic compounds mentioned above of low melting point i.e., between about 40 and 150 C. may also be added to the metal resinates.
  • dyestuffs and pigments those described in conjunction with the positive toners may be used. However, in general, the content of pigments and dyestuffs should not exceed 10% of the metal resinates, if negative polarity is to be adequately maintained.
  • the electrophotographic material used is preferably that having organic photoconductor coatings on a support, preferably metal and particularly aluminum.
  • Thickening agents such as cellulose alkyl ether, polyvlnyl alcohol or carbalkoxy celluloses may be added both to the acids and to the liquids used for the alkaline treatment,
  • a developer consisting of 10 parts by weight of a finely pulverized benzidine and 2 parts by weight of a colored ketone resin (Kunstharz EM).
  • 10 parts by weight of the resin are first melted, 2 parts by weight of carbon black are added, and the mixture is stirred. The cooled melt is ground and sieved.
  • the benzidine and the ketone resin, colored with carbon black, are used in particle sizes of 1030p.. When they are mixed, the benzidine acquires a negative charge and the colored ketone resin a positive charge.
  • a substantially dry developer for use in electrophotographic processes consisting essentially of at least one toner which in use acquires a positive charge and at least one which acquires a negative charge, the toners being of approximately equal particle size, and at least one of the toners being selected from the group consisting of water-soluble toners, alkali-soluble toners, acid-soluble toners, toners which upon decomposition by heating form only products which are soluble in one of the said media, and toners which upon decomposition by heating form only products which are completely in the gaseous phase, one of the toners being removable from a base material independently of other toners located thereon after development of an electrostatic image in an electrophotographic process.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
US50316A 1959-09-04 1960-08-18 Two component partially removable electrophotographic developer powder and process for utilizing same Expired - Lifetime US3236639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK38623A DE1197754B (de) 1959-09-04 1959-09-04 Entwickler fuer elektrophotographische Zwecke

Publications (1)

Publication Number Publication Date
US3236639A true US3236639A (en) 1966-02-22

Family

ID=7221448

Family Applications (1)

Application Number Title Priority Date Filing Date
US50316A Expired - Lifetime US3236639A (en) 1959-09-04 1960-08-18 Two component partially removable electrophotographic developer powder and process for utilizing same

Country Status (9)

Country Link
US (1) US3236639A (sv)
BE (1) BE594397A (sv)
CH (1) CH382559A (sv)
DE (1) DE1197754B (sv)
FR (1) FR1274515A (sv)
GB (1) GB944395A (sv)
LU (1) LU39099A1 (sv)
NL (1) NL255481A (sv)
SE (1) SE218046C1 (sv)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454347A (en) * 1964-05-12 1969-07-08 Heberlein & Co Ag Fabric dyeing by transferring by heating or solubilizing a dye from an electrostatically deposited,heat or solvent fused water soluble dielectric carrier
US3510297A (en) * 1966-05-05 1970-05-05 Ibm Process for producing negative transparencies
US3864125A (en) * 1969-02-10 1975-02-04 Xerox Corp Electrophotographic method of making an imaging master
US3884825A (en) * 1972-08-03 1975-05-20 Xerox Corp Imaging composition
US3928655A (en) * 1973-03-05 1975-12-23 Fuji Photo Film Co Ltd Electrostatic powder coating method
US3985559A (en) * 1973-10-23 1976-10-12 Oce-Van Der Grinten N.V. Toner powder for electrostatic images
JPS5225420B1 (sv) * 1970-12-11 1977-07-07
US4352877A (en) * 1979-08-22 1982-10-05 Fujitsu Limited Electrophotographic developing process using flash fixation and toner therefor
US4395485A (en) * 1980-04-03 1983-07-26 Toray Industries, Inc. Dry electrophotographic toner comprising small, polymer coated particles as flow agent
US4404270A (en) * 1980-05-22 1983-09-13 Hitachi Chemical Company, Ltd. Positively chargeable powdered electrophotographic toner containing dialkyl tin oxide charge control agent
US4455360A (en) * 1979-06-13 1984-06-19 Mitsui Toatsu Chemicals, Incorporated Electrophotographic toner comprising cinnamic acid
US4500616A (en) * 1982-09-20 1985-02-19 Konishiroku Photo Industry Co., Ltd. Extraction developing method for electrostatic latent images
US4921771A (en) * 1972-10-21 1990-05-01 Konishiroku Photo Industry Co., Ltd. Toner for use in developing electrostatic images containing polypropylene

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844815A (en) * 1972-12-18 1974-10-29 Xerox Corp Foron yellow as a toner colorant
DE2726263C2 (de) * 1977-06-10 1985-10-10 Hoechst Ag, 6230 Frankfurt Verfahren zum Herstellen von Druckformen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638416A (en) * 1948-05-01 1953-05-12 Battelle Development Corp Developer composition for developing an electrostatic latent image
US2735785A (en) * 1953-07-30 1956-02-21 Process of electrostatic printing
US2917460A (en) * 1955-06-17 1959-12-15 Ibm Powder compositions useful as electroscopic toners
US2919247A (en) * 1954-12-23 1959-12-29 Haloid Xerox Inc Tripartite developer for electrostatic images
US2965573A (en) * 1958-05-02 1960-12-20 Haloid Xerox Inc Xerographic developer
US3010842A (en) * 1955-08-29 1961-11-28 Xerox Corp Development of electrostatic images
US3013890A (en) * 1958-07-08 1961-12-19 Xerox Corp Process of developing electrostatic images and composition therefor
US3078231A (en) * 1959-05-13 1963-02-19 Commw Of Australia Controlled developer for use in electro-photography and electro-radiography

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2638416A (en) * 1948-05-01 1953-05-12 Battelle Development Corp Developer composition for developing an electrostatic latent image
US2735785A (en) * 1953-07-30 1956-02-21 Process of electrostatic printing
US2919247A (en) * 1954-12-23 1959-12-29 Haloid Xerox Inc Tripartite developer for electrostatic images
US2917460A (en) * 1955-06-17 1959-12-15 Ibm Powder compositions useful as electroscopic toners
US3010842A (en) * 1955-08-29 1961-11-28 Xerox Corp Development of electrostatic images
US2965573A (en) * 1958-05-02 1960-12-20 Haloid Xerox Inc Xerographic developer
US3013890A (en) * 1958-07-08 1961-12-19 Xerox Corp Process of developing electrostatic images and composition therefor
US3078231A (en) * 1959-05-13 1963-02-19 Commw Of Australia Controlled developer for use in electro-photography and electro-radiography

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454347A (en) * 1964-05-12 1969-07-08 Heberlein & Co Ag Fabric dyeing by transferring by heating or solubilizing a dye from an electrostatically deposited,heat or solvent fused water soluble dielectric carrier
US3510297A (en) * 1966-05-05 1970-05-05 Ibm Process for producing negative transparencies
US3864125A (en) * 1969-02-10 1975-02-04 Xerox Corp Electrophotographic method of making an imaging master
JPS5225420B1 (sv) * 1970-12-11 1977-07-07
US3884825A (en) * 1972-08-03 1975-05-20 Xerox Corp Imaging composition
US4921771A (en) * 1972-10-21 1990-05-01 Konishiroku Photo Industry Co., Ltd. Toner for use in developing electrostatic images containing polypropylene
US3928655A (en) * 1973-03-05 1975-12-23 Fuji Photo Film Co Ltd Electrostatic powder coating method
US3985559A (en) * 1973-10-23 1976-10-12 Oce-Van Der Grinten N.V. Toner powder for electrostatic images
US4455360A (en) * 1979-06-13 1984-06-19 Mitsui Toatsu Chemicals, Incorporated Electrophotographic toner comprising cinnamic acid
US4352877A (en) * 1979-08-22 1982-10-05 Fujitsu Limited Electrophotographic developing process using flash fixation and toner therefor
US4395485A (en) * 1980-04-03 1983-07-26 Toray Industries, Inc. Dry electrophotographic toner comprising small, polymer coated particles as flow agent
US4404270A (en) * 1980-05-22 1983-09-13 Hitachi Chemical Company, Ltd. Positively chargeable powdered electrophotographic toner containing dialkyl tin oxide charge control agent
US4500616A (en) * 1982-09-20 1985-02-19 Konishiroku Photo Industry Co., Ltd. Extraction developing method for electrostatic latent images

Also Published As

Publication number Publication date
GB944395A (en) 1963-12-11
DE1197754B (de) 1965-07-29
LU39099A1 (sv) 1960-10-24
NL255481A (sv)
FR1274515A (fr) 1961-10-27
SE218046C1 (sv) 1968-01-02
BE594397A (sv)
CH382559A (de) 1964-09-30

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