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:
Jul. 30, 2013
Filed:
Nov. 25, 2009
Changgang Gu, Shandong, CN;
Zhigang Xu, Shandong, CN;
Guangdong HU, Shandong, CN;
Yuguo Wang, Shandong, CN;
Xiangang Yang, Shandong, CN;
Changgang Gu, Shandong, CN;
Zhigang Xu, Shandong, CN;
Guangdong Hu, Shandong, CN;
Yuguo Wang, Shandong, CN;
Xiangang Yang, Shandong, CN;
Shandong New Beiyang Information Technology Co., Ltd, Weihai, Shandong, CN;
Abstract
A thermal print head detecting device comprises a power supply (), a power supply switch (), a power supply switch control circuit (), a first detecting resistor (Ra), a second detecting resistor (Rb), a print head () to be detected and a print head control circuit (); an output end of the power supply () is connected to a common joint (N) of respective heating elements of the print head through the power supply switch (), the first detecting resistor (Ra) is connected in parallel with the power supply switch (); an output end of the power supply switch control circuit () is connected to a control end of the power supply switch (); the second detecting resistor (Rb) has one end connected to the common joint (N) of the heating element units, and the other end grounded; and the print head control circuit () controls strobing of each heating element unit of the print head. The thermal print head detecting device does not need an exclusive power supply, which prominently simplifies the circuit of the detecting device and decreases the cost.