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    BACKUP ROLL CLEANING SYSTEM FOR A HEATED ROLL FUSER
    1.
    发明专利
    BACKUP ROLL CLEANING SYSTEM FOR A HEATED ROLL FUSER 未知

    公开(公告)号：CA1106904A

    公开(公告)日：1981-08-11

    申请号：CA321416

    申请日：1979-02-13

    Applicant: IBM

    Inventor： BERNARDELLI WILLIAM J ,  BRANDON FRED Y

    IPC: G03G15/20 ,  G03G21/00

    Abstract: BACKUP ROLL CLEANING SYSTEM FOR A HEATED ROLL FUSER A hot roll fuser includes a heated roller and a substantially non-deformable backup roll forming a nip through which a carrier with unfused toner may pass, the toner becoming fused by virtue of the heating action from the hot roll. A cleaning arrangement for cleaning the backup roll comprises a support and a pair of scraping blades, each supported in contacting relationship with the backup roll. To insure good scraping action, each of the blades has a serrated or interrupted scraping edge, and the serrations or interruptions of the first and second blades are offset so that the entire surface area of the backup roll is scraped either by the first or second blades, or both.

    ELECTROPHOTOGRAPHIC DEVELOPER WITH CARRIER OVERFLOW CONTROL
    2.
    发明专利
    ELECTROPHOTOGRAPHIC DEVELOPER WITH CARRIER OVERFLOW CONTROL 未知

    公开(公告)号：CA1108844A

    公开(公告)日：1981-09-15

    申请号：CA309376

    申请日：1978-08-15

    Applicant: IBM

    Inventor： ABBOTT JERRY J ,  BERNARDELLI WILLIAM J ,  CAUDILL ALLISON H ,  THOMPSON JOHN A

    IPC: G03G15/09

    Abstract: ELECTROPHOTOGRAPHIC DEVELOPER WITH CARRIER OVERFLOW CONTROL A magnetic-brush developer for use in an electrophotographic machine wherein the magnetic brush is used to transport toner-coated carrier particles to an elevated development zone from a pickup zone. A path for so moving the carrier is provided between the magnetic brush roll and an overflow plate, the lower end of which also serves as a doctoring blade. The carrier is moved to the top of the roll where a doctoring blade limits the amount of carrier entering the development zone. Excess carrier is accumulated in an expanded spatial area near the doctoring blade and returned to the vicinity of the pickup zone by falling back between the overflow plate and the housing. An area is provided near the doctoring blade at the top of the roll where no magnetic field is present. The overflow plate is made of non-magnetic material.

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