Motor driven single element printer
US4215943A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1978 |
| Grant date | Aug 5, 1980 |
| Priority date | — |
| Expiry date | Jun 21, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J7/50
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printer has a horizontally movable carrier which supports a print head including a print element on which are disposed type characters in a two dimensional array with the element controllably movable by motors in two degrees of freedom to selectively position each type character opposite a record-medium-carrying platen for printing. The print head is on a rocker having a cam follower which cooperates with a cam on a shaft driven by a variable speed motor which is also on the carrier. During printing the motor speed is controlled so that the print element is driven against the platen with a force related to the particular character being printed. The motor speed is further controlled so that there is not only a minimum wait between the printing of successive characters but there are also minimum accelerations and decelerations of the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.