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    Toner cartridge
    1.
    发明公开
    Toner cartridge 失效
    墨粉盒

    公开(公告)号：EP0798603A3

    公开(公告)日：1998-11-18

    申请号：EP97301283

    申请日：1997-02-26

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： OKADA MITSUHARU ,  OKAMOTO KATSUMI

    IPC: G03G15/08

    CPC classification number: G03G15/0882 ,  G03G15/0872 ,  G03G2215/0665 ,  G03G2215/0675 ,  G03G2215/0687 ,  Y10S222/01

    Abstract: A toner cartridge comprises an inner tubular container (4) having a toner discharge opening (422) and accommodating a toner; an outer tubular case (6) having a toner passage opening corresponding to the toner discharge opening (422), and being fitted into the inner tubular container (4) relatively rotatably; and a seal member (8) having a sealing portion (82) for covering the toner discharge opening (422), the sealing portion (82) being strippably bonded to the outer peripheral surface of the inner tubular container (4), and an action portion (84) formed as a continuum of the sealing portion (82) and having a front end part secured to the outer tubular case (6). The sealing portion (82) of the seal member (8) has a longitudinal bond portion (821) and a peripheral bond portion (823) defined along the surroundings of the toner discharge opening, and a cut groove (86) provided inwardly of the peripheral bond portion (823) at the peel start side end part thereof.

    ELECTROPHOTOGRAPHIC TONER
    2.
    发明专利
    ELECTROPHOTOGRAPHIC TONER 失效

    公开(公告)号：JPH0695425A

    公开(公告)日：1994-04-08

    申请号：JP24293992

    申请日：1992-09-11

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： NAKANO TETSUYA ,  SHIMIZU YOSHITAKE ,  ISHIMARU SEIJIROU ,  HIGUCHI TAKASHI ,  OKAMOTO KATSUMI

    IPC: G03G9/08

    Abstract: PURPOSE:To provide an electrophotographic toner having high fluidity even in continuous copying in an environment at high temp. and humidity in spite of its small particle diameter, leaving little spent toner on a carrier, an electrifying blade and a photosensitive body and ensuring a high speed of kick-off of electrostatic charge and stable electrostatic chargeability. CONSTITUTION:This electrophotographic toner consists of toner particles, fine hydrophobic silica particles and fine alumina particles. The toner particles are fine particles having

    METHOD FOR MEASURING CHARGE CONTROL AGENT DISPERSED STATE IN DEVELOPER
    5.
    发明专利
    METHOD FOR MEASURING CHARGE CONTROL AGENT DISPERSED STATE IN DEVELOPER 失效

    公开(公告)号：JPH05142195A

    公开(公告)日：1993-06-08

    申请号：JP30798891

    申请日：1991-11-22

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： ISHIMARU SEIJIROU ,  OKAMOTO KATSUMI

    IPC: G01N27/26 ,  G01N27/416 ,  G03G9/097

    Abstract: PURPOSE:To accurately measure not only the concn. of the charge control agent present on the surface of toner but also the surface area of the charge control agent, that is, the dispersed particle size thereof in the dispersed state of said agent as numerical data. CONSTITUTION:In measuring the surface dispersion state of a charge control agent in a developer, toners or carriers 6 whose surfaces are constituted of a resin composition containing the charge control agent are dispersed in a water-containing water miscible org. solvent 2 dissolving the charge control agent but not a resin to measure the potential difference accompanied by the dissolution of the charge control agent and, from the obtained dissolution curve, the surface concn. and surface area of the charge control agent are evaluated.

    TONER SUPPLY CONTROL METHOD AND DEVICE USED THEREFOR
    6.
    发明专利
    TONER SUPPLY CONTROL METHOD AND DEVICE USED THEREFOR 失效

    公开(公告)号：JPH05119622A

    公开(公告)日：1993-05-18

    申请号：JP30540391

    申请日：1991-10-23

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： OKAMOTO KATSUMI

    IPC: G03G21/00 ,  G03G15/00 ,  G03G15/08

    Abstract: PURPOSE:To prevent the occurrence of a failure caused by an environmental change, and to attain application to even the toner of small particle diameter. CONSTITUTION:A toner hopper having three kinds of toner whose static charge characteristic is different according to humidity, is provided. A magnetic sensor 120 detecting that the toner inside a developing unit is reduced to be less than a prescribed quantity, and a humidity sensor 110 measuring the humidity, are provided. A driving circuit 170 and a motor 180 are operated by a CPU 130, based on the output of the magnetic sensor 120, and a clutch 30a or 30b or 30c is turned on by a changeover circuit 140, to rotate a stirring shaft 25a, or 25b or 25c, so that the toner showing a prescribed static charge characteristic according to the humidity is supplied out of three kinds of toner.

    METHOD FOR MEASURING SURFACE AREA INFORMATION OF CHARGE CONTROL AGENT EXISTING ON TONER SURFACE
    7.
    发明专利
    METHOD FOR MEASURING SURFACE AREA INFORMATION OF CHARGE CONTROL AGENT EXISTING ON TONER SURFACE 失效

    公开(公告)号：JPH05119507A

    公开(公告)日：1993-05-18

    申请号：JP30540491

    申请日：1991-10-23

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： OKAMOTO KATSUMI ,  ISHIMARU SEIJIROU

    IPC: G01N15/08 ,  G01N21/59 ,  G03G9/08

    Abstract: PURPOSE:To measure the surface area information of the charge control agent existing on a toner surface. CONSTITUTION:Methanol 14 which dissolves the charge control agent is put into a container 10. The methanol 14 is circulated between a cell 20 for a light- transmissive spectrophotometer and the container 10 by an injector 30, etc., so as to be charged by a prescribed amt. each into the cell 20. After the toner contg. the charge control agent is charged into the container 10, the cell 20 is irradiated with the light of the prescribed light quantity and the absorbance is measured with lapse of time by the spectrophotometer. The surface area information of the charge control agent is obtd. in accordance with the absorbance.

    ELECTROPHOTOGRAPHIC TONER AND ITS PRODUCTION
    9.
    发明专利
    ELECTROPHOTOGRAPHIC TONER AND ITS PRODUCTION 失效

    公开(公告)号：JPH07104501A

    公开(公告)日：1995-04-21

    申请号：JP10962692

    申请日：1992-04-28

    Applicant: MITA INDUSTRIAL CO LTD

    Inventor： SHIMIZU YOSHITAKE ,  NAKANO TETSUYA ,  ISHIMARU SEIJIROU ,  HIGUCHI TAKASHI ,  OKAMOTO KATSUMI

    IPC: G03G9/08 ,  G03G9/087

    Abstract: PURPOSE:To obtain a fine toner having high flowability, a high rising speed of electrostatic charge and stable electrostatic chargeability by using toner particles having a specified average particle diameter and two kinds of hydrophobic fine silica particles different from each other in the average particle diameter of primary particles. CONSTITUTION:This toner consists of toner particles, hydrophobic fine silica particles and fine alumina particles. First hydrophobic fine silica particles having 15-20nm average particle diameter of the primary particles and second hydrophobic fine silica particles having

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