公开(公告)号：AU5219679A

公开(公告)日：1980-05-29

申请号：AU5219679

申请日：1979-10-25

Applicant: IBM

Inventor： DOLLENMAYER WILLIAM LEE

IPC: B41J1/30 ,  B41J7/34

Abstract: Two coaxially mounted spoked print wheels form a single printing element of a serial printer. Each wheel contains plural spokes having print characters thereon and a selected spoke is driven by a hammer to impact paper on a platen thereby effecting printing. Each wheel has a gap or window between two spokes of sufficient size to allow hammer or spoke entry. In operation, the window of one wheel and the selected spoke of the other wheel are rotated to the print position. The hammer is actuated to effect printing. The distance between the hammer and the selected spoke is maintained constant when shifting from wheel to wheel by shifting the wheel combination axially along its axis of rotation. The printing element is advanced relative to the platen and the platen is indexed to effect serial line printing. The two print wheels can readily be removed as a unit from the printer and replaced for type style interchangeability.

公开(公告)号：DE1255941B

公开(公告)日：1967-12-07

申请号：DEJ0030711

申请日：1966-04-29

Applicant: IBM

Inventor： DOLLENMAYER WILLIAM LEE

IPC: G11B27/10 ,  G11B3/70

公开(公告)号：DE1238934B

公开(公告)日：1967-04-20

申请号：DEJ0025665

申请日：1964-04-17

Applicant: IBM

Inventor： DOLLENMAYER WILLIAM LEE

IPC: B41J13/20