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    Automatic ribbon takeup
    2.
    发明授权
    Automatic ribbon takeup 失效
    自动RIBBON TAKEUP

    公开(公告)号：US3612242A

    公开(公告)日：1971-10-12

    申请号：US3612242D

    申请日：1968-02-01

    Applicant: IBM

    Inventor： CASSELL JOHN N ,  ENGLE VENCIL D ,  HYMES LAWRENCE ,  ROLLER DONALD C

    IPC: B41J31/10 ,  B41J33/14

    CPC classification number: B41J31/10

    Abstract: Typewriter carbon ribbon is automatically attached to a takeup reel by the combined provision of: (1) a flexible camming plate that creates significant friction interaction between the reel and the ribbon and is constructed to be effective even when substantial amounts of ribbon have been previously wound on the reel; (2) an electrically neutral flange to eliminate the adverse effects of static electricity on automatic attachment; (3) a reel enclosure for maintaining loose ribbon in the proximity of the reel; (4) several selective control modes of operation to assist the operator; and (5) several other features of construction relating principally to effective handling of a loose flimsy ribbon end.

    THERMAL PRINTER
    4.
    发明专利
    THERMAL PRINTER 未知

    公开(公告)号：CA1241228A

    公开(公告)日：1988-08-30

    申请号：CA508030

    申请日：1986-04-30

    Applicant: IBM

    Inventor： ENGLE VENCIL D ,  HAFER CAMERON H ,  HUGHES FRANK M ,  STEGER DONALD J ,  STEWART EDWARD G ,  STREET RAMON L ,  THOMPSON JOHN A

    IPC: B41J32/02 ,  B41J33/24 ,  B41J33/26 ,  B41M5/26 ,  B41J33/00

    Abstract: THERMAL PRINTER A thermal printer (10) has a thermal transfer medium (28) fed past a thermal printhead (21) at a substantially constant velocity by a feed roll (82) engaging the thermal transfer medium just prior to the printhead to maintain a portion of the thermal transfer medium between the printhead and the feed roll relatively stiff. The feed roll is mounted on a cartridge (30) having the thermal transfer medium supplied therefrom. A drag brake (70) is disposed in the feed path of the thermal transfer medium prior to the feed roll to cause a substantially constant premetering tension to be applied to the thermal transfer medium irrespective of the coefficient of friction between the drag brake and the thermal transfer medium. A carrier (14), which supports the printhead and a feed roll driver (90), is driven separately from the feed roll driver so that various ratios between the velocities of the thermal transfer medium and the carrier are obtained to produce various print qualities. One print quality occurs in a draft mode, which is a relatively high speed, in which there is substantial conservation of the thermal transfer medium. The peel angle of the thermal transfer medium from a recording medium (12) on which printing occurs is maintained at a relatively low angle to increase the contact time between the thermal transfer medium and the recording medium.

    SELF ALIGNING PAPER FEED ROLLER ASSEMBLY
    6.
    发明专利
    SELF ALIGNING PAPER FEED ROLLER ASSEMBLY 未知

    公开(公告)号：CA1122148A

    公开(公告)日：1982-04-20

    申请号：CA336999

    申请日：1979-10-04

    Applicant: IBM

    Inventor： ENGLE VENCIL D ,  MAROWSKI RAYMOND M ,  POLLARD EDWARD E ,  PULLEN JOHN L

    IPC: B41J13/02 ,  B41J13/036 ,  B41J13/076

    Abstract: SELF ALIGNING PAPER FEED ROLLER ASSEMBLY A paper feed roll assembly is disclosed which is pivotally mounted on a central point with three degrees of freedom of movement. The feed rolls are engageable with the periphery of the platen. Additionally, the support for the paper feed rolls is deflectable about the central point by a feed roll release member to effect the withdrawal of the feed rolls from the periphery of the platen to enhance paper insertion and removal. The pivot point support provides for freedom of movement in the three necessary degrees of freedom to allow equilization of feed roll force against the platen and for alignment of the feed rolls with the periphery of the platen to insure proper paper feed. The feed roll truck frame, by virtue of its pivotal mounting, may be deflected downward to permit release or insertion of the paper. A deflection means or eccentric bar is disclosed for deflecting the truck member away from the periphery of the platen against the force of the pivot support acting toward the platen. LE9-77-009

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