High speed dual pitch impact printer
US4235167A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1979 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Mar 12, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/58
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An impact printer is capable of printing at either ten characters per inch or fifteen characters per inch by changing the type character carrying member. The print hammers are spaced at the same distance apart as are the type characters on the carrying member or band and the hammers are displaced from a home position by one space for printing the fifteen characters per inch at a higher speed than when printing at ten characters per inch. The hammers are time shared and are caused to be moved or shifted a precise distance of 4 increments of 1/30 inch each for a standard pitch band at ten characters per inch or a precise distance of 2 increments of 1/30 inch each for a compressed pitch band at fifteen characters per inch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.