Serial printer
US4512675A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1983 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | May 31, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J1/50
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A serial printer suitable for use in desk-top calculators or the like. The serial printer has a rotary shaft rotatable together with two type wheels. The power supply to the rotary shaft is made by a motor which operates continuously only in one rotational direction through a first clutch. A second clutch is provided to make a selective power transmission between the rotary shaft and the member for actuating the hammer, as well as the member for causing the carrying operation. The states of the first and the second clutches are controlled by a change-over arm which in accordance with the operation instruction given by an operation instruction coil, such that these clutches are alternatingly turned on and off to make various operations such as printing, column shift, paper feeding and so forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.