ROLL FUSER
    2.
    发明专利

    公开(公告)号:DE3060240D1

    公开(公告)日:1982-04-29

    申请号:DE3060240

    申请日:1980-03-20

    Applicant: IBM

    Abstract: An electrophotographic copier machine with a roll fuser where one of the mating rolls is comprised of a thin outer shell which takes a variable taper so that a concave shape is produced under high humidity conditions and a relatively straight roller is produced under low humidity conditions. Means for changing the support at the roll ends is provided to produce the variable taper. End plugs can be moved axially inward at high humidity to provide support for the end portions of the normally concave roll and can be moved axially outwardly under low humidity such that no support is provided until the roll ends are flattened under the pressure of a mating roll.

    HOT ROLL FUSER FOR AN ELECTROSTATIC COPIER

    公开(公告)号:DE2960672D1

    公开(公告)日:1981-11-19

    申请号:DE2960672

    申请日:1979-03-02

    Applicant: IBM

    Abstract: A roll fuser for an electrostatic copier includes a pair of scraper blades (17 and 18) positioned in parallel along the backup roll to effect cleaning thereof. In order to increase the compliance of the blades, they include a plurality of slots (17b and 18b) extending from the scraping edge. The slots in the respective blades are offset to effect cleaning of the total area of the backup roll.

    XEROGRAPHIC COPIER SYSTEM INCLUDING A HOT ROLL FUSER

    公开(公告)号:DE2860655D1

    公开(公告)日:1981-08-06

    申请号:DE2860655

    申请日:1978-08-08

    Applicant: IBM

    Abstract: The rolls (31, 32) of a hot roll fuser are normally closed at a predetermined time prior to the arrival of a copy sheet at the roll nip. If, however, the temperature of the backup roll (32) exceeds a predetermined value, the rolls are closed at a shorter time before the copy sheet arrival. A sensor (50) is coupled to threshold circuit (53) which applies enabling inputs to AND gates (64, 66). These gates receive timing signals from a counter and decoder system (71, 73, 74, 75) and, in accordance with the output from the threshold circuit (53) apply either an early or a late pulse to a fuser roll closure latch (78). Instead of directly measuring the backup roll temperature, the timing of opening and closing of the fuser rolls may be monitored to predict the temperature of the backup roll.

    HOT ROLL FUSER EARLY CLOSURE INHIBITOR

    公开(公告)号:AU3719278A

    公开(公告)日:1979-12-20

    申请号:AU3719278

    申请日:1978-06-16

    Applicant: IBM

    Abstract: The rolls (31, 32) of a hot roll fuser are normally closed at a predetermined time prior to the arrival of a copy sheet at the roll nip. If, however, the temperature of the backup roll (32) exceeds a predetermined value, the rolls are closed at a shorter time before the copy sheet arrival. A sensor (50) is coupled to threshold circuit (53) which applies enabling inputs to AND gates (64, 66). These gates receive timing signals from a counter and decoder system (71, 73, 74, 75) and, in accordance with the output from the threshold circuit (53) apply either an early or a late pulse to a fuser roll closure latch (78). Instead of directly measuring the backup roll temperature, the timing of opening and closing of the fuser rolls may be monitored to predict the temperature of the backup roll.

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