Emphasized character dot-matrix printer having two groups of dot-forming elements
US5037221A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | May 30, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/5056
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A dot-matrix printer for printing characters in a matrix of dots wherein columns of dots each column consisting of a suitable number of dots and extending in a given direction are arranged at a predetermined printing pitch in a printing direction intersecting the direction of the columns of dots. The printer has a print head which is moved in the printing direction and has a first and a second group of dot-forming elements for forming dots such that the dots formed by the second group correspond to the dots formed by the first group and are spaced in the printing direction, by a predetermined distance from the corresponding dots formed by the first group, if the first and second groups of dot-forming elements are activated simultaneously. A first and a second control device are provided for selectively activating the dot-forming elements of the first and second groups, respectively, during movement of the print head, according to dot information representative of characters, such that a character formed by the first group of dot-forming elements and the same character formed by the second group of dot-forming elements have a predetermined positional relation with each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.