The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 01, 2008
Filed:
Nov. 05, 2003
Jeffrey L Conroy, Rumford, RI (US);
Robert S Afzal, Providence, RI (US);
Allison Berube, Somerset, MA (US);
Nabil M Lawandy, N. Kingstown, RI (US);
Dana Lewis, North Kingstown, RI (US);
Thomas Pizzuti, Providence, RI (US);
Andrei Smuk, Providence, RI (US);
Jeffrey L Conroy, Rumford, RI (US);
Robert S Afzal, Providence, RI (US);
Allison Berube, Somerset, MA (US);
Nabil M Lawandy, N. Kingstown, RI (US);
Dana Lewis, North Kingstown, RI (US);
Thomas Pizzuti, Providence, RI (US);
Andrei Smuk, Providence, RI (US);
Spectra Systems Corporation, Providence, RI (US);
Abstract
Optical media having markings that are non-interfering, or substantially non-interfering with readout of data from the optical media are disclosed. The optical media make use of certain formulations of color forming coatings described herein. Protective coatings used to enhance the color forming coatings are also presented. Methods for incorporating the coatings into the optical media are included. In preferred embodiments, the marking is formed in a photosensitive coating that is applied to the optical media, and then cured with a first light. A second light, having a substantially separate band of wavelengths from the first light, is used to image a marking into the coating. The coating is robust to many external influences, such as ambient environmental conditions, and physical wear.