Autography marking tape

Details Autography marking tape Autography marking tape

1990-07-05

1991-09-24

Hannaher, Constantine

Radiant energy

Luminophor irradiation

250303, 2504611, 2504621, 2504752, 378162, G03C 516

Patent

active

050515969

ABSTRACT:
Marking tape adapted for use in autography, comprising: a substrate having an upper surface, a phosphorescent coating applied to the upper surface, the coating including phosphor powder grains, the grains phosphorescing with light at a wavelength between 400 and 600 nm upon exposure to UV or visible light, the phosphorescing occurring for a period of at least 5 minutes after the exposure, the concentration of the grains being sufficient to emit sufficient photons and thereby cause X-ray film having a sensitivity of 2000 EI to darken to an optical density of between 0.2 and 3.0.

REFERENCES:
patent: 2341583 (1944-02-01), Tuve
patent: 2396219 (1946-03-01), Weagle
patent: 3631243 (1971-12-01), Byler
patent: 4181859 (1980-01-01), Vitalini
patent: 4293436 (1981-10-01), Fost
patent: 4506676 (1985-03-01), Duska
patent: 4510392 (1985-04-01), Litt et al.
patent: 4813062 (1989-03-01), Gilpatrick

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