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. 06, 1992
Filed:
Jan. 24, 1991
Takeshi Niikawa, Nagoya, JP;
Masashi Suzuki, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A dot-matrix printer with a print head having plural print elements which are disposed in a row and selectively activated to form a dot or dots in a vertical row of a dot matrix pattern representing a character, having a device for adding to a content of a memory the numbers of dots which are formed by the elements; a device for measuring a time lapse; a temperature sensor for sensing a temperature of the print head; a device for substracting a predetermined value based upon the temperature sensed by the temperature sensor at predetermined time intervals; a device for checking whether the content of the memory has exceeded a reference value; and a control device for controlling the print head so as to cool the print head if the content of the memory has exceeded the predetermined value.