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. 04, 2007
Filed:
Dec. 06, 2005
Tadahiro Naito, Kadoma, JP;
Yutaka Noda, Sanda, JP;
Tadahiro Naito, Kadoma, JP;
Yutaka Noda, Sanda, JP;
Funai Electric Co., Ltd., Osaka, JP;
Abstract
A thermal printer comprises: a ROMfor storing a heat history correction table; a RAMfor storing the density-related energizing time data for the first and second preceding lines printed immediately before the current line to be printed and the density-related energizing time data before a correction for the current line to be printed which includes a target dot T; and a control section for comparing the density-related energizing time data for the first and second preceding lines and the density-related energizing time data before a correction for both adjacent dots Tand Tof the target dot T with the density-related energizing time data before a correction for the target dot T to select reference data, and further for performing a corrective operation for the pre-correction energizing time data for the target dot T using thus selected reference data to calculate energizing time data for the target dot T to be printed, whereby it is possible to prevent the temperature of a thermal head from being reduced excessively.