Rotary printer and rotor structure
US4195936A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1977 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Oct 28, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J25/316
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention provides improved means for automatically retracting the styli away from the paper when the rotational speed of the rotor drops below a predetermined minimum level. Improved means also are provided for stably holding and accurately positioning the styli during printing. In addition, simple means are provided for adjusting the axial position of the styli to ensure proper character spacing. A snap-on housing protects the rotor and the retracted styli and allows the rotor and styli to be removed easily from the rotary printer as a single enclosed unit. An improved latch is provided for locking the rotor in one place on the drive shaft, but allowing the rotor to be removed relatively easily. The platen has a slight inclined area or ramp at the leading edge of the recording paper. The ramp smooths the travel of the styli on to the paper and increases the area of the paper which can be used for printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.