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    TONER COMPOSITION FOR DEVELOPING ELECTROSTATIC LATENT IMAGE
    3.
    发明公开
    TONER COMPOSITION FOR DEVELOPING ELECTROSTATIC LATENT IMAGE 失效
    TONERZUSAMMENSETZUNG ZUR ENTWIDELUNG ELKTROSTATISCHER BILDER

    公开(公告)号：EP0896253A4

    公开(公告)日：2000-05-10

    申请号：EP98901577

    申请日：1998-02-10

    Applicant: TORAY INDUSTRIES

    Inventor： NAGASE KIMIKAZU ,  ISHIYAMA MASAAKI ,  TAIRA TAKASHI ,  TAKAHATA HIROYUKI ,  YOTSUDUKA KOUSUKE ,  HANO SHIGEHIRO ,  CHUJO YOSHIHIRO

    IPC: G03G9/08 ,  G03G9/097 ,  G03G15/20 ,  G03G9/09

    CPC classification number: G03G9/08 ,  G03G9/097 ,  G03G9/09733 ,  G03G15/201

    Abstract: The invention in this application relates to a toner composition for electrostatic latent image development which is characterized in that, in a toner composition comprising at least binder resin, colorant and charge control agent, to be used in a print forming method provided with a print fixing device which fixes the toner image on a recording medium by means of a light flash, the concentration of benzene generated by heating for 90 seconds at 330 DEG C is no more than 60 mu g/g, and the invention provides a toner composition for electrostatic latent image development which either extends the filter life or does not require the use of a filter.

    Abstract translation: 一种用于图像形成方法的静电潜像显影用调色剂组合物，所述图像形成方法使用通过闪光将调色剂图像定影在记录介质上的图像定影装置，所述调色剂组合物至少包含粘合剂树脂，着色剂和电荷控制剂 。 通过在330℃对组合物进行90秒热处理而产生的苯的浓度不大于60μg/ g。 该组合物延长过滤器的使用寿命或不需要使用过滤器。

    ELECTROPHOTOGRAPHIC CARRIER, IMAGE FORMING METHOD AND IMAGE FORMING DEVICE
    4.
    发明专利
    ELECTROPHOTOGRAPHIC CARRIER, IMAGE FORMING METHOD AND IMAGE FORMING DEVICE 失效

    公开(公告)号：JP2000267360A

    公开(公告)日：2000-09-29

    申请号：JP6746099

    申请日：1999-03-12

    Applicant: TORAY INDUSTRIES

    Inventor： ISHIYAMA MASAAKI ,  TSUCHIMOTO TATSURO ,  TAIRA TAKASHI

    IPC: G03G9/107

    Abstract: PROBLEM TO BE SOLVED: To produce an electrophotographic carrier used for a two-component developer capable of ensuring stable image quality even in continuous printing. SOLUTION: At least a bonding resin and a magnetic material are melted, kneaded and cooled, the kneaded material is comminuted and classified and the resulting powder is heat-treated in a higher temperature range than the glass transition temperature of the bonding resin preferably by 5-15 deg.C to produce the objective electrophotographic carrier. This carrier constitutes a two- component developer by combination with a toner, contains at least the bonding resin and the magnetic material and has

    PRODUCTION OF ELECTROPHOTOGRAPHIC MAGNETIC TONER, TONER, TWO-COMPONENT DEVELOPER CONTAINING SAME, IMAGE FORMING METHOD AND IMAGE FORMING DEVICE
    5.
    发明专利
    PRODUCTION OF ELECTROPHOTOGRAPHIC MAGNETIC TONER, TONER, TWO-COMPONENT DEVELOPER CONTAINING SAME, IMAGE FORMING METHOD AND IMAGE FORMING DEVICE 失效

    公开(公告)号：JP2000267351A

    公开(公告)日：2000-09-29

    申请号：JP6745999

    申请日：1999-03-12

    Applicant: TORAY INDUSTRIES

    Inventor： TAIRA TAKASHI ,  ISHIYAMA MASAAKI ,  TSUCHIMOTO TATSURO

    IPC: G03G9/08 ,  G03G9/083 ,  G03G9/087 ,  G03G15/08

    Abstract: PROBLEM TO BE SOLVED: To produce an electrophotographic magnetic toner that does not cause filming on the surface of a photoreceptor even in long-time or high-speed image formation and therefore prevents the occurrence of image defects. SOLUTION: When at least a bonding resin and a magnetic material are melted and kneaded, the resulting kneaded material is comminuted and classified to form toner particles and inorganic fine particles are added to the toner particles and mixed to produce an electrophotographic magnetic toner, a high concentration mixture of the inorganic fine particles is prepared in such a way as to attain 3-30 times the targeted addition rate of the inorganic fine particles and then the toner particles are added to the mixture and mixed to dilute the concentration of the inorganic fine particles to the targeted addition rate.

    POSITIVELY CHARGEABLE ELECTROSTATIC LATENT IMAGE DEVELOPING TONER COMPOSITION AND ELECTROPHOTOGRAPHIC DEVELOPER COMPOSITION
    7.
    发明专利
    POSITIVELY CHARGEABLE ELECTROSTATIC LATENT IMAGE DEVELOPING TONER COMPOSITION AND ELECTROPHOTOGRAPHIC DEVELOPER COMPOSITION 失效

    公开(公告)号：JPH11218967A

    公开(公告)日：1999-08-10

    申请号：JP2313098

    申请日：1998-02-04

    Applicant: TORAY INDUSTRIES

    Inventor： TAKAHATA HIROYUKI ,  NAGASE KOICHI ,  ISHIYAMA MASAAKI

    IPC: G03G9/087 ,  G03G9/08 ,  G03G9/097 ,  G03G9/10

    Abstract: PROBLEM TO BE SOLVED: To provide a positively chargeable electrostatic latent image developing toner which produces no white speckles and to provide an electrophotographic developer. SOLUTION: This electrostatic charge image developing toner consists of at least a binder resin, a coloring agent and silica particles. The silica particles have 0.1 to 2 μm average particle size measured by a centrifugal sedimentation method. The electrophotographic developer consists of toner particles comprising at least a binder resin and a coloring agent, silica particles having 0.1 to 2 μm average particle size measured by a centrifugal sedimentation method of silica particles, and carrier particles. This developer is controlled in such a manner that the electrification sequence of the constituent particles is made of, from the lower side, carrier particles, toner particles and silica particles.

    IMAGE FORMING METHOD AND PRINTED MATTER PROVIDED WITH IMAGE
    8.
    发明专利
    IMAGE FORMING METHOD AND PRINTED MATTER PROVIDED WITH IMAGE 失效

    公开(公告)号：JPH10282718A

    公开(公告)日：1998-10-23

    申请号：JP8271797

    申请日：1997-04-01

    Applicant: TORAY INDUSTRIES

    Inventor： NAGASE KOICHI ,  NAKAJO YOSHIHIRO ,  ISHIYAMA MASAAKI

    IPC: G03G9/09 ,  G03G15/20

    Abstract: PROBLEM TO BE SOLVED: To provide an image forming method for preventing falsification, with excellent workability by coloring the surroundings of a printing part with a coloring component included in toner. SOLUTION: In the case of forming an image on a printed material, the surroundings of the printing part are colored by the coloring component included in the toner. By this constitution, the surroundings of the printing part of the printed material are colored so that even if toner grains are physically removed to attempt the falsification of the numbers of securities, etc., in the case the fixation of toner powder is insufficient, evidence of printing is left because a surrounding part is colored, to prevent such an illegal falsification. As the printed material, an arbitrary one can be used. In other words, a special limit is not set but preferably a sheet of paper is used. Further, as the surroundings, normally most of the surroundings of the printing part are mentioned but it is good that the surroundings of at least a part of the printing part are obtained. Further, as the image forming method, it is preferable that an electrophotographic method can be used.

    MANUFACTURE OF ELECTROSTATIC LATENT IMAGE DEVELOPING CARRIER
    9.
    发明专利
    MANUFACTURE OF ELECTROSTATIC LATENT IMAGE DEVELOPING CARRIER 失效

    公开(公告)号：JPH1090952A

    公开(公告)日：1998-04-10

    申请号：JP24607996

    申请日：1996-09-18

    Applicant: TORAY INDUSTRIES

    Inventor： SUZUKI YOSHIO ,  ISHIYAMA MASAAKI ,  TAIRA TAKASHI

    IPC: G03G9/107 ,  G03G15/20

    Abstract: PROBLEM TO BE SOLVED: To provide a resin carrier suitably used for a dual component magnetic brush developing system low in cost and having high reliability. SOLUTION: In manufacture of a magnetic material dispersion type resin carrier by melting and mixing, the carrier being used in the electrophotographic device of a dual component magnetic brush developing system or an electrostatic recorder and being made of at least a magnetic material and a connecting resin, grains having composition similar to that of the magnetic material dispersion type resin carrier are added before melting and mixing. For the grains having composition similar to that of the carrier, fine powder and/or coarse powder obtained daring manufacture by, for instance, crushing and classifying the carrier is used, but the use is not limited to this. Further, the amount of addition is set lower than, preferably 70wt.% of the entire mixed material or more preferably lower than 60wt.%.

    ELECTROPHOTOGRAPHIC TONER
    10.
    发明专利
    ELECTROPHOTOGRAPHIC TONER 失效

    公开(公告)号：JPH09258471A

    公开(公告)日：1997-10-03

    申请号：JP6603096

    申请日：1996-03-22

    Applicant: TORAY INDUSTRIES

    Inventor： SUZUKI YOSHIO ,  ISHIYAMA MASAAKI ,  TAIRA TAKASHI

    IPC: G03G9/08 ,  G03G9/083 ,  G03G9/087

    Abstract: PROBLEM TO BE SOLVED: To obtain a toner compsn. excellent in low-temp. fixability, giving a void-free image having high image quality and not causing spending even under stirring in a developing machine. SOLUTION: This toner compsn. consists essentially of a bonding resin, a colorant and wax and has 5×10 -5×10 Pa.s apparent viscosity at 100 deg.C and 5×10 -5×10 Pa.s apparent viscosity at 120 deg.C. The heat of fusion of the wax is 84-251J/g.

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