Imaging device
US4729687A · kind A · utility
30Cited by
9References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1986 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Sep 26, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249995
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Improved imaging device for applying temporary indicia to substrate of the type having a base covered with a relatively light color, opaque, open cell microvoid-containing layer that is rendered translucent when the microvoids are filled with a liquid having a refractive index similar to that of the layer. The improvement in the imaging device involves insuring that the imaging liquid contains no substance having an evaporation rate less than about one-half of the liquid, thereby permitting the imaging device to be repeatedly applied to the same area of the substrate without leaving ghost images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.