Stock material or miscellaneous articles – Article having latent image or transformation
Patent
1975-09-12
1977-05-24
Kendall, Ralph S.
Stock material or miscellaneous articles
Article having latent image or transformation
428204, 428325, 428210, 427163, 40137, 40130B, G23F 1302, G23F 1314
Patent
active
040256740
ABSTRACT:
A reflex light reflecting sheet or reflective structure whereby incident light is reflected from a reflective layer on the rear of the structure through a plurality of small transparent balls, wherein a surface coating layer which is transparent and flat is formed over the surfaces of said balls, said layer being composed of two sub-layers between which is provided a printed portion using fine lines for printing, such that the printed portion is visible in scattered light in the daytime but invisible in reflected light in the nighttime.
REFERENCES:
patent: 2827720 (1958-03-01), Phillippi
patent: 3247005 (1966-04-01), Parry et al.
Kendall Ralph S.
Seibu Polymer Kasei Kabushiki Kaisha
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