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:
Aug. 08, 1978
Filed:
Feb. 14, 1977
Perry D Hampton, Dallas, TX (US);
Jimmie L Tobey, Garland, TX (US);
Recognition Equipment Incorporated, Dallas, TX (US);
Abstract
An ink temperature control apparatus having an enclosed heat conducting structure with ink circulating therein is provided in a ink jet printer. The temperature control apparatus includes a heating element attached to the structure and thermally engaged with the ink contained within the ink structure. A temperature sensing device is also located on the structure and is thermally engaged with the ink contained within the structure. A control system is provided to respond to the temperature sensing device and actuate the heating element in response to the temperature information communicated by the temperature sensing device. The ink is maintained at a certain predetermined temperature by the control system. Ink under pressure enters the structure from a sump after being pressurized by a pump. Subsequent to leaving the structure, the heated ink proceeds to a nozzle of the ink jet printer. Any ink exiting the nozzle which is not utilized for printing purposes is collected and returned to the sump to be recycled through the ink jet printer.