EP1565792B1 - Utilisation de combinaisons a base de cires dans des toners et toners correspondants - Google Patents

Utilisation de combinaisons a base de cires dans des toners et toners correspondants Download PDF

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Publication number
EP1565792B1
EP1565792B1 EP03757974A EP03757974A EP1565792B1 EP 1565792 B1 EP1565792 B1 EP 1565792B1 EP 03757974 A EP03757974 A EP 03757974A EP 03757974 A EP03757974 A EP 03757974A EP 1565792 B1 EP1565792 B1 EP 1565792B1
Authority
EP
European Patent Office
Prior art keywords
wax
toners
waxes
toner
photo
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
EP03757974A
Other languages
German (de)
English (en)
Other versions
EP1565792A1 (fr
Inventor
Gerd Hohner
Michael Bayer
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.)
Clariant Produkte Deutschland GmbH
Original Assignee
Clariant Produkte Deutschland GmbH
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 Clariant Produkte Deutschland GmbH filed Critical Clariant Produkte Deutschland GmbH
Publication of EP1565792A1 publication Critical patent/EP1565792A1/fr
Application granted granted Critical
Publication of EP1565792B1 publication Critical patent/EP1565792B1/fr
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
    • G03G9/087—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
    • G03G9/09733—Organic compounds

Definitions

  • the present invention relates to the use of wax-containing combinations in photo-toners as well as photo-toners containing such combinations.
  • photo-toners which consist of resins, pigments, charge control agents and waxes and optionally flow aids.
  • the powdered photo toners usually form the copy initially to be copied on a transfer roller during the copying process, are transferred from there to the copy paper and then thermally fixed.
  • the waxes contained in the toner as a formulation component promote release of the photo-toner from the fixing roller as a release agent and anti-offset agent, act as adhesion promoters in the transfer to the paper and contribute to the homogeneous distribution of the pigments in the preparation of the toner as a dispersing aid.
  • Hydrocarbon waxes such as polyethylene or polypropylene waxes have hitherto predominantly been used as wax components in photo-toners. These waxes do not meet the demands of modern high speed copiers in all aspects. In particular, there is a need for wax components having improved anti-offset activity, improved adhesion to printing on paper, and further optimized pigment dispersing properties.
  • JP-A-1 142 560 describes the use of erucic acid amide in liquid toners. Due to its low hardness, erucaamide is only conditionally suitable for use in toners.
  • the invention therefore relates to the use of a combination of erucaamide and one or more wax (s) in photo-toners.
  • the wax is selected from the group of natural or semi-synthetic waxes.
  • the wax has a Nadelpenetrationskohl of a maximum of 10 mm -1 .
  • the wax has a melting point of 50 to 160 ° C.
  • the invention also relates to photo-toners containing a combination of erucaamide and one or more waxes.
  • the wax is selected from the group of natural or semi-synthetic waxes.
  • the wax has a Nadelpenetrationskohl of a maximum of 10 mm -1 .
  • the wax has a melting point of 50 to 160 ° C.
  • waxes for example, vegetable waxes such as carnauba or candellila wax or waxes of animal origin such. Shellac wax in question.
  • Suitable partially synthetic waxes are, for example, bleached, optionally chemically e.g. montan waxes modified by esterification and / or by partial saponification.
  • Corresponding products are described, for example, in Ullmann's Encyclopedia of Industrial Chemistry, 5th ed., Vol. A 28, Weinheim 1996 in Chapters 2.2, 2.3 and 3.1-3.5.
  • Non-polar polyolefin waxes can be prepared by thermal degradation of branched or unbranched polyolefin plastics or by direct polymerization of olefins.
  • Suitable polymerization processes are, for example, free-radical processes in which the olefins, generally ethylene, are converted at higher pressures and temperatures into more or less branched waxes;
  • processes in which ethylene and / or higher 1-olefins are polymerized by means of organometallic catalysts, such as Ziegler-Natta or metallocene catalysts to give unbranched or branched waxes.
  • Polar polyolefin waxes are formed by appropriate modification of nonpolar waxes, for example by oxidation with air or by grafting polar olefin monomers, for example ⁇ , ⁇ -unsaturated carboxylic acids and / or derivatives thereof, such as acrylic acid or maleic anhydride.
  • polar polyolefin waxes can be prepared by copolymerizing ethylene with polar comonomers, for example, vinyl acetate or acrylic acid; further by oxidative degradation of higher molecular weight, non-waxy ethylene homopolymers and copolymers.
  • polar comonomers for example, vinyl acetate or acrylic acid
  • Corresponding examples can be found, for example, in Ullmann's Encyclopedia of Industrial Chemistry, 5th ed., Vol. A 28, Weinheim 1996, Chap. 6.1.5.
  • the waxes used according to the invention have needle penetration numbers of not more than 10 mm -1 , preferably of not more than 5 mm -1 , and also dropping points of from 50 to 160 ° C., preferably from 60 to 120 ° C., particularly preferably from 70 to 90 ° C.
  • photo toners usually contain resins based on polyesters or styrene-acrylate copolymers.
  • charge control means which assist in transferring the toner from the photo-roll to the paper base, e.g. quaternary ammonium salts used for a positive charge and, for example, aluminum azo complexes for a negative charge of the toner powder.
  • quaternary ammonium salts used for a positive charge and, for example, aluminum azo complexes for a negative charge of the toner powder.
  • small amounts of highly dispersed silicic acids can be added to the toner powder.
  • suitable black or color pigments are added to the toners already in the thermoplastic mixture.
  • styrene-acrylate resin type CPR 100, manufactured by Mitsui, glass transition temperature 60 ° C., MFR / 140 ° C. 5 g / 10 min
  • a black pigment carbon black of particle size 2 ⁇ m, manufactured by Timcal
  • a charge control agent ®Copy Charge N4S, manufacturer: Clariant GmbH
  • 4 parts by weight of an erucamide-wax combination used according to the invention from Table 1 in a kneader mixed This mixture was then crushed to a toner powder of average particle size 12 microns (100% ⁇ 20 microns).
  • toner powder was now applied to a paper in an area of 20 ⁇ 100 mm.
  • This image was then fixed with a roller assembly consisting of a rigid heatable roller and an elastic cold roller at 160 ° C and a flow rate of 150 mm / s.
  • another white sheet was passed through the hot roll pair and examined for toner residues. There were no "ghost pictures" on the white sheet.
  • Table 1 Erucaamide combinations used example wax Weight ratio erucaamide: wax 1 ®Licowax E (Clariant GmbH) (NPZ approx. 1, dropping point approx.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Claims (8)

  1. Utilisation d'une combinaison d'érucamide et d'une ou plusieurs cires dans des photo-toners.
  2. Utilisation selon la revendication 1, caractérisée en ce que la cire est choisie dans le groupe des cires naturelles ou des cires partiellement synthétiques.
  3. Utilisation selon la revendication 1 ou 2, caractérisée en ce que la cire pénètre un indice de pénétration à l'aiguille au maximum de 10 mm-1.
  4. Utilisation selon l'une ou plusieurs des revendications 1 à 3, caractérisée en ce que la cire a un point de fusion de 50 à 160°C.
  5. Photo-toner contenant une combinaison d'érucamide et d'une ou plusieurs cires.
  6. Photo-toner selon la revendication 5, caractérisé en ce que la cire est choisie dans le groupe des cires naturelles ou des cires partiellement synthétiques.
  7. Photo-toner selon la revendication 5 ou 6, caractérisé en ce que la cire présente un indice de pénétration à l'aiguille au maximum de 10 mm-1.
  8. Photo-toner selon l'une ou plusieurs des revendications 5 à 7, caractérisé en ce que la cire a un point de fusion de 50 à 160°C.
EP03757974A 2002-10-22 2003-10-14 Utilisation de combinaisons a base de cires dans des toners et toners correspondants Expired - Lifetime EP1565792B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10249059A DE10249059B3 (de) 2002-10-22 2002-10-22 Verwendung von Wachse enthaltende Kombinationen in Fototonern
DE10249059 2002-10-22
PCT/EP2003/011372 WO2004038511A1 (fr) 2002-10-22 2003-10-14 Utilisation de combinaisons a base de cires dans des toners et toners correspondants

Publications (2)

Publication Number Publication Date
EP1565792A1 EP1565792A1 (fr) 2005-08-24
EP1565792B1 true EP1565792B1 (fr) 2006-06-14

Family

ID=32114815

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03757974A Expired - Lifetime EP1565792B1 (fr) 2002-10-22 2003-10-14 Utilisation de combinaisons a base de cires dans des toners et toners correspondants

Country Status (7)

Country Link
US (1) US20060008722A1 (fr)
EP (1) EP1565792B1 (fr)
JP (1) JP2006504125A (fr)
CN (1) CN1705916A (fr)
DE (2) DE10249059B3 (fr)
ES (1) ES2266856T3 (fr)
WO (1) WO2004038511A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090155705A1 (en) * 2007-12-12 2009-06-18 Rick Owen Jones Release Agent Formulation for Chemically Prepared Toner
KR102034253B1 (ko) * 2013-04-12 2019-10-21 삼성디스플레이 주식회사 유기 발광 표시 장치 및 이의 제조 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643960A (en) * 1980-06-02 1987-02-17 Minnesota Mining And Manufacturing Company Developing powder composition containing a fatty acid amide component
JPH0774910B2 (ja) * 1987-01-14 1995-08-09 富士ゼロックス株式会社 乾式トナ−
JPH06175393A (ja) * 1992-12-04 1994-06-24 Fuji Xerox Co Ltd 導電性トナー、その製造法および画像形成法
US6156473A (en) * 1995-08-31 2000-12-05 Eastman Kodak Company Monodisperse spherical toner particles containing aliphatic amides or aliphatic acids
JP3241003B2 (ja) * 1998-09-03 2001-12-25 富士ゼロックス株式会社 静電荷現像用トナー及びその製造方法、現像剤、並びに画像形成方法
JP2000181141A (ja) * 1998-10-05 2000-06-30 Sekisui Chem Co Ltd トナ―用樹脂組成物及びトナ―
US6582867B2 (en) * 2000-08-30 2003-06-24 Fuji Xerox Co., Ltd. Toner for developing electrostatic latent image, process for producing the same, and process for forming image
JP3794264B2 (ja) * 2000-12-12 2006-07-05 富士ゼロックス株式会社 電子写真用現像剤および画像形成方法

Also Published As

Publication number Publication date
DE50303878D1 (de) 2006-07-27
CN1705916A (zh) 2005-12-07
EP1565792A1 (fr) 2005-08-24
ES2266856T3 (es) 2007-03-01
JP2006504125A (ja) 2006-02-02
DE10249059B3 (de) 2004-07-29
WO2004038511A1 (fr) 2004-05-06
US20060008722A1 (en) 2006-01-12

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