Ribbon cartridge motion control with a non-concentric drive
US4650356A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1984 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Jun 5, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J33/16
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cartridge (1) is attached to a carrier and tiltable around a tilting axis (2). The carrier is movable along platen (3) and parallel to the print line and tilting axis (2). On the rear and on the bottom of the cartridge a drive knob (4) is provided as part of the internal cartridge ribbon drive. On the carrier a ribbon feed device with wheel (6) and upright standing blades (7) is provided. Those blades (7) cooperate with walls (9) inside the knob surface and form a kind of screw driver interconnection. Both engaging parts (7) and walls (9) allow a movement perpendicular to their rotational axis and to each other. Wheel (6) with blades (7) rotates around an axis (11) and knob (4) rotates around axis (12). Intentionally the two rotational axes (11, 12) are offset to each other relative to tilting axis (2). Thus, always a moment around this tilting axis (2) is created. To force cartridge (1 ) with knob (4) down onto ribbon feed wheel (6) the rotational axis (11) of wheel (6) is closer to tilting axis (2) than rotational axis (12) of the cartridge ribbon drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.