Print carriage positioning with normal and precision modes
US5257869A · kind A · utility
2Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Sep 8, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/202
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a typewriting apparatus in the invention, the carrier is driven by a stepping motor. Characters printed by this apparatus are divided into two groups, one for characters frequently used but requiring no higher printing position precision and the other for characters less frequently used but requiring higher printing position precision. Furthermore, each group can be printed in a normal printing mode or in a boldface printing mode. These four kinds of printing are executed by selecting their respective suitable pulse rates of the stepping motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.