Radiation imagery chemistry: process – composition – or product th – Visible imaging using radiation only other than heating by...
Patent
1979-04-30
1980-12-30
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Visible imaging using radiation only other than heating by...
20415919, 430348, 430363, 430364, 430965, G03C 504
Patent
active
042424402
ABSTRACT:
Certain polyacetylenes exhibit reversible color changes at transition temperatures in the range -180.degree. to 220.degree. C., wherein the thermochromic cycles can be repeated many times with no apparent degradation and little change in spectroscopic properties.
These thermochromic polyacetylenes are useful in temperature-indicator and indicia-display device applications.
A process for laser-beam recording of images is described employing a thermochromic polyacetylene, in which the hysteresis properties of the polyacetylene can be suitably altered allowing for selectively storing or erasing the formed image.
REFERENCES:
patent: 3501297 (1970-03-01), Cremeans
patent: 3723121 (1973-03-01), Hausen
patent: 3822134 (1974-07-01), Rasch et al.
patent: 3999946 (1976-12-01), Patel et al.
Baughman Ray H.
Chance Ronald R.
Miller Granville G.
Patel Gordhanbhai N.
Preziosi Anthony F.
Allied Chemical Corporation
Brammer Jack P.
Fuchs Gerhard H,.
LandOfFree
Thermochromic polyacetylenes used in laser beam recording method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermochromic polyacetylenes used in laser beam recording method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermochromic polyacetylenes used in laser beam recording method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-7904