Low-noise type impact printer
US4636101A · kind A · utility
9Cited by
5References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Apr 1, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The noise level of an impact printer is reduced by at least 5 dB by providing a resonant absorption chamber between the printer frame and the cover which is designed so as to have a resonance frequency corresponding to the fundamental frequency of the printer noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.