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:
Jan. 10, 2006
Filed:
May. 24, 2002
Jouka Makitalo, Eura, FI;
Elina Mattila, Köyliö, FI;
Jouka Makitalo, Eura, FI;
Elina Mattila, Köyliö, FI;
Jujo Thermal Oy, Kauttua, FI;
Abstract
The present invention relates to a method of manufacturing heat sensitive recording material for the bar code reader wavelength range of 660–690 nm, the recording material containing a base layer and a coating, and the coating containing at least a color former and a developer. The method of the invention is characterized in that the color former and the developer are selected so that when the reflectance of the color former-developer compound on the recording material is determined, it remains below a target curve determined with a function Hp=1.775*Ap10, where Hp is the reflectance percent and Ap the wavelength (nm) used in the bar code reader.