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Laser method and system of scribing graphics

DC
  • US 5,990,444 A
  • Filed: 10/11/1996
  • Issued: 11/23/1999
  • Est. Priority Date: 10/30/1995
  • Status: Expired due to Term
First Claim
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1. A laser method of forming a graphic on a material comprising:

  • scribing the material with a laser beam and controlling an energy density per unit time during the scribing, where the energy density per unit time is defined as;

    ##EQU3## where continuous power is a continuous power output of the laser during the scribing, area of spot is an area of a spot formed by the laser beam on the material when the laser beam is stationary relative to the material, and speed is a speed of the laser beam relative to the material during the scribing, wherein the material is one of a fabric material, a leather material, or a vinyl material, and wherein said energy density per unit time is controlled in a way to prevent undesired carbonization, melting or burn-through.

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