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US 5,672,381 AGranted
Printing of reflective sheeting
AssigneeMinnesota Mining and Manufacturing Company
InventorJ. Sundar Rajan
Life of this patent
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Abstract
A weather resistant sign and a method of printing a sign including the steps of providing a sign component and an image definition, applying dry toner powder to surface portions corresponding to the image definition, and fusing the applied toner. Preferably, the fused toner is protected from weather by a transparent protective layer. A toner composition and a computer program for printing are also disclosed.
Claims4
A method of printing an image on a reflective sign comprising the steps of:
- A. providing a sign component selected from the group consisting of retroreflective sheeting and transparent film, said sign component having a polymeric surface;
- B. providing an embossed pattern in said sign component, the pattern providing a definition of an image to be printed;
- C. applying to the embossed pattern, dry toner powder comprising:
- (1) colorant;
- and
- (2) binding agent which adheres to said polymeric surface and which comprises a polymer;
- and
- D. fusing the applied dry toner powder to form a fixed image borne upon the embossed pattern.
5 more elements
Dependencies are inferred from the claim text.