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    RIBBON FEED TENSION MECHANISM
    12.
    发明专利
    RIBBON FEED TENSION MECHANISM 未知

    公开(公告)号：DE3661602D1

    公开(公告)日：1989-02-09

    申请号：DE3661602

    申请日：1986-03-21

    Applicant: IBM

    Inventor： APPLEGATE STEVEN LEWIS ,  CRAFT JAMES ALEXANDER

    IPC: B41J32/00 ,  B41J33/52 ,  B41J35/08

    Abstract: Member (9) has a tension arm (13) over which ribbon (3) feeds. Biasing arm (17) presses member - (9) toward brake surface (7), with slot (21) moved until it encounters stud (23). At low tension of ribbon (3), brake surfaces (11) and (7) press and hold ribbon (3). As feed tension increases, tension arm - (13) forces member (9) back until stud (23) encounters the opposite end of slot (21), after which slightly higher force further opens the brake and arm (13) continues to provide feed tension. The mechanism is small, efficient, smooth functioning, and suited to incorporation as part of a ribbon cartridge.

    RIBBON CARTRIDGE LOADING MECHANISM
    14.
    发明专利
    RIBBON CARTRIDGE LOADING MECHANISM 未知

    公开(公告)号：DE3168524D1

    公开(公告)日：1985-03-07

    申请号：DE3168524

    申请日：1981-10-20

    Applicant: IBM

    Inventor： CRAFT JAMES ALEXANDER ,  OKCUOGLU SELAHATTIN ADIL

    IPC: B29B7/00 ,  B29C47/00 ,  B29C47/06 ,  B29C48/30 ,  B41J32/00 ,  B41J35/28

    Abstract: In a printing machine having a removable ribbon cartridge, means are provided for conveniently loading and unloading said ribbon cartridge on a support plate. Said means include guide means within the cartridge which cooperate with complementary guide means within the support plate for guiding the cartridge while it is being dropped-in onto the support plate; and lever operated cam/cam-follower means for then shifting the cartridge on the support plate to its final locked position. The cartridge unloading is performed through a reverse lever operation followed by a cartridge pick-up.

    SINGLE USE RIBBON CARTRIDGE WITH FRANGIBLE RESISTIVE ELEMENT FOR RESTRAINING THE TRANSLATING TAKE-UP SPOOL
    15.
    发明专利
    SINGLE USE RIBBON CARTRIDGE WITH FRANGIBLE RESISTIVE ELEMENT FOR RESTRAINING THE TRANSLATING TAKE-UP SPOOL 未知

    公开(公告)号：DE3165702D1

    公开(公告)日：1984-09-27

    申请号：DE3165702

    申请日：1981-10-20

    Applicant: IBM

    Inventor： CRAFT JAMES ALEXANDER

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

    Abstract: In ribbon cartridges (10) including a ribbon take-up spool (20) which is peripherally driven by a spacially fixed driving roller (18), it is necessary for the take-up spool (20) to move away from the driving roller (18), as the ribbon (22) accumulates on the spool (20), while remaining in proper driving engagement with the roller (18). According to the invention, this is achieved by a frangible member (24) which resists the movement of the take-up spool axle (28) except when caused by ribbon accumulation. Frangible member (24) may either be formed as an integral part of the cartridge walls or be bonded thereto. Member (24) will break or tear as axle (28) is forced away from roller (18) by the increasing diameter of take-up spool (20).

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