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:
Feb. 08, 2000
Filed:
Nov. 26, 1997
Thomas E Kocher, Rochester, NY (US);
Kwok L Yip, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
In a photothermographic laser imaging system including a laser printer for exposing photothermographic media to digital data, a thermal processor for thermally developing the exposed photothermographic media to render a visual image of the digital data and a densitometer for reading the density of the visual image, a method for establishing calibration of the system comprising the steps of: reading optimum thermal processing parameters including processor temperature from a bar code associated with unexposed photothermographic media; setting the thermal processor to operate at the read parameters; exposing a calibration media by the laser printer, the calibration media including a multiple step gray scale pattern including a minimum density step, D.sub.min, and an upper density step, D.sub.UDP ; reading with the densitometer the densities of the multiple step gray scale pattern from the developed calibration media; calculating a code value to optical density look-up-table from the read densities; and if the D.sub.min and D.sup.UDP values are within tolerances, using the calculated look-up-table to process successive media; but if the D.sub.min is greater than a predetermined value, adjusting the thermal processor temperature down, and if said D.sub.UDP is less than a predetermined value, adjusting the thermal processor temperature up.