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:
Oct. 25, 2016
Filed:
Jul. 23, 2012
Applicant:
John Cridland, Cheshire, GB;
Inventor:
John Cridland, Cheshire, GB;
Assignee:
DATALASE LIMITED, Widnes Cheshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/44 (2006.01); B41M 5/28 (2006.01); B41M 5/34 (2006.01); G03C 1/73 (2006.01); G03F 7/025 (2006.01);
U.S. Cl.
CPC ...
B41J 2/44 (2013.01); B41M 5/285 (2013.01); B41M 5/34 (2013.01); G03C 1/73 (2013.01); G03F 7/025 (2013.01);
Abstract
The present invention relates to a method of marking a substrate that comprises a color forming material, comprising the steps of: activating a region of the substrate so as to transform it from an inactive, low reactive state to an active, high reactive state; irradiating a part of the activated region with an initial color changing radiation to effect an initial color change to a first color; and irradiating a part of the substrate that has been changed to the first color with a high power density beam of visible electromagnetic radiation to effect a further color change of the irradiated region to a second color.