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    42.
    发明专利
    未知

    公开(公告)号：DE2743003A1

    公开(公告)日：1978-03-30

    申请号：DE2743003

    申请日：1977-09-23

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： KATO MAMORU ,  YAMAURA SUSUMU ,  HIRAKATA OSAKA ,  KAMEZAWA YASUTOKI ,  AIZAWA TATSUO

    IPC: D21H19/24 ,  D21H21/14 ,  G03G7/00 ,  G03G13/16

    Abstract: A transfer sheet for electrostatically transferring thereon an electrically conductive or electrically semi-conductive toner in electrostatic photography or electrostatic printing, which comprises a substrate and a toner-receiving layer formed on at least one surface of the substrate, which toner-receiving layer contains a composition comprising (A) a thermoplastic acrylic polymer having a carboxyl group content of 2 to 30% by weight and (B) a thermosetting resin reactive with the acrylic polymer (A), is produced by coating on at least one surface of the substrate an aqueous composition containing the thermoplastic acrylic polymer in the form of an aqueous emulsion and the thermosetting resin in the form of an aqueous solution and drying the coated substrate to form a toner-receiving layer on the surface of the substrate. In this transfer sheet, the electric resistance can be maintained at a high level even under high humidity conditions, and a toner image can be transferred on this transfer sheet at a high transfer efficiency.

    43.
    发明专利
    未知

    公开(公告)号：DE2718045A1

    公开(公告)日：1977-11-17

    申请号：DE2718045

    申请日：1977-04-22

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： KATO YOSHIAKI ,  FUSHIDA AKIRA ,  UEDA YASUO ,  TOHI YASUSUKE ,  AIZAWA TATSUO

    IPC: B41N1/14 ,  G03G13/28 ,  B41C1/10 ,  G03G5/08

    Abstract: A plate for lithography or offset printing comprising a flexible substrate and a water-resistant coating layer formed on the flexible substrate, said water-resistant coating layer being composed of a water-insoluble resin binder and an inorganic pigment dispersed in said binder, and the water-resistant coating layer including an oleophilic ink-supporting portion composed of particles consisting essentially of at least one member selected from triiron tetroxide and gamma -type diiron trioxide, the particles being embedded in at least a part of the surface of the coating layer, and an etched hydrophilic ink-repelling portion composed of the inorganic pigment.

    44.
    发明专利
    未知

    公开(公告)号：DE2537574A1

    公开(公告)日：1976-03-04

    申请号：DE2537574

    申请日：1975-08-22

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： NAKAJIMA TADANOBU ,  AIZAWA TATSUO

    IPC: G03B27/14 ,  B41F33/00 ,  B65H7/06 ,  B65H20/04 ,  G03G15/00 ,  B65H17/22

    Abstract: A paper feed device for a copying machine, in which paper jamming at the copying paper cutting mechanism is effectively prevented is provided. This paper feed device for a copying machine comprises a feed reel for supporting a copying paper wound thereon in a roll-like form, a paper feed roller intermittently driven and rotated to take out the copying paper from the feed reel, an introduction roller disposed on the introduction side of a transfer passage for delivering the copying paper to copying treatment zones in the copying machine, and a copying paper-cutting mechanism disposed between the paper feed roller and the introduction roller to cut the copying paper taken out of the feed reel into a prescribed length. The paper feed device further comprises a paper jamming-preventing mechanism for stopping the front end of the copying paper, which is present at the cutting position when the operation of the paper-cutting mechanism is completed, at a position slightly retreated from the cutting position and making the front end of the copying paper stand by for the next copying operation at this retreated position.

    LIQUID ELECTROPHOTOGRAPHIC DEVELOPERS
    48.
    发明专利
    LIQUID ELECTROPHOTOGRAPHIC DEVELOPERS 未知

    公开(公告)号：GB1286399A

    公开(公告)日：1972-08-23

    申请号：GB2094970

    申请日：1970-04-30

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： UEDA YASUO ,  KAMEZAWA YASUTOKI ,  AIZAWA TATSUO ,  IKEDA TOSHIMITU

    IPC: G03G9/12

    Abstract: 1286399 Electro-photography MITA INDUSTRIAL CO Ltd 30 April 1970 20949/70 Heading G2H A liquid developer comprises a dispersion in a liquid hydro-carbon of an anthraquinone, azo or phthalocyanine colorant substituted by an alkyl, alkoxy, thioalkoxy, alkylamino, alkylcarbonyl, alkanamido, N-alkylsulphonamido, alkarylamino, alkarylcarbonylamino, N-alkaryl sulphonamido, N-alkylcarbonyl sulphonamido, alkylbenzenesulphonamido, alkoxyarylamino or alkylaminotriazinylamino group having 10-24 carbon atoms in each alkyl portion.

    49.
    发明专利
    未知

    公开(公告)号：DE1597868B1

    公开(公告)日：1972-05-31

    申请号：DE1597868

    申请日：1967-11-24

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： UEDA YASUO ,  TAKATSU AKIRA ,  AIZAWA TATSUO

    IPC: G03G5/05 ,  G03G5/09 ,  G03G13/00

    Abstract: 1,186,750. Electrophotographic plate. MITA INDUSTRIAL CO. Ltd. 24 Nov., 1967 [26 Nov., 1966], No. 53649/67. Heading H1K. An electro-photographic plate for chargeless electrostatic printing, comprises a base and a photo-conductive layer coated thereon, the layer comprising a photo-conductive material treated with an organic acid and dispersed in a binding material consisting of polyvinyl alcohol or a mixture of polyvinyl acetate with either polyvinyl alcohol or polyvinyl acetal. The base may be paper or polyethylene terephthalate. Citric, malic or oxalic acid may be used whilst the photo-conductor is preferably ZnO. Specification 1,186,749 is referred to.

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