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:
Dec. 27, 2005
Filed:
Mar. 30, 2005
Kin-ming Kwan, Lexington, KY (US);
Jonathan H. Laurer, Lexington, KY (US);
David T. Shadwick, Versailles, KY (US);
Audrey D. Rodgers, Lawrenceburg, KY (US);
Kin-Ming Kwan, Lexington, KY (US);
Jonathan H. Laurer, Lexington, KY (US);
David T. Shadwick, Versailles, KY (US);
Audrey D. Rodgers, Lawrenceburg, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
Methods for measuring laser light transmissivity of a specific position in a work piece prior to the work piece undergoing laser welding at the specific position with a laser beam having a specific welding wavelength. To obtain a baseline measurement reading, a laser light source projects a laser beam at the welding wavelength directly into a detector. Thereafter, the work piece becomes suspended between the laser light source and detector whereby an output of the detector now corresponds to a work piece measurement reading. Differences between the two readings reveal whether the work piece will yield a satisfactory weld at the specific position when later welded by a laser beam at the welding wavelength. Preferred work pieces include inkjet printhead lids and bodies.