Ultrasonic transfer printing with multi-copy, color and low audible noise capability
US4046073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1976 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Jan 28, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing or copying system in which ink is transferred from an ink-bearing medium to a printing medium through the use of ultrasonics. The ink-bearing medium may be an ink ribbon, carbon paper or the like which is in contact with a printing medium such as paper. Ultrasonic energy is applied to the ink-bearing medium through transmission fibers, wires or bundles thereof, causing the viscosity of the ink to be reduced due to the ultrasonic vibrations and conversion of the ultrasonic energy into heat such that the ink is transferred to the printing medium. Multi-copy capability is achieved by having alternate layers of carbon paper or the like in contact with the paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.