Small-sized printer
US4452137A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 13, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Aug 13, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J1/48
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printer for printing a row of characters on a recording medium. The printer includes at least first and second type rings having types disposed on the periphery thereof which are rotatable from a reset position to a print position. First and second pawls are associated with the first and second type rings, respectively. A control member moves the first pawl into engagement with the first type ring when in its reset position to prevent rotation thereof. The second type ring is rotated into a print position while the first type ring is held in its reset position by the first pawl. A lever associated with the first and second pawls is actuated by an electromagnet to move the second pawl into engagement with the second type ring when in a print position to stop the rotation thereof. The control member releases the first pawl from the first type ring which then rotates to a print position. The lever is then reactuated by the electromagnet to move the first pawl into engagement with the first type ring when in a print position. A positioning member positions the second pawl out of engagement with the second type ring and also acts to hold the second pawl in engagement with the second t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.