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. 30, 1990
Filed:
Dec. 05, 1988
Applicant:
Inventors:
Eitan Avni, Langhorne, PA (US);
Sal A Pace, Trenton, NJ (US);
Assignee:
Union Camp Corporation, Wayne, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01J / ;
U.S. Cl.
CPC ...
356 73 ; 250571 ; 356369 ; 356446 ;
Abstract
Devices and methods for measuring mottle of paper-like materials are provided. the invention includes directing a radiation over a paper-like material and scanning it in a plurality of directions. Radiation scattered by the paper-like material is detected to produce an output. This output is processed to provide a reading proportional to the mottle of the paper-like material. The invention uses electro-optical devices and signal processing to quantify mottle as an appearance property. Gloss measurements of the paper-like material can also be quantified and simultaneously displayed.