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. 20, 1992
Filed:
Dec. 18, 1991
Minoru Tanaka, Suwa, JP;
Takashi Asada, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An improved impact dot print head having improved electrical integrity and improved heat radiating qualities is provided. The print head includes a magnetic frame, a plurality of solenoids coil for driving print wires mounted on the frame, a nose for guiding the wires, a printed circuit board mounted on the nose and electrically connected to a terminal part of the solenoid coil holes in a spacer disposed between the frame and printed circuit board. The spacer, frame, printed circuit board and nose are positioned to prevent rotational and translational movement. The spacer is an insulating material or metal coated with an insulator for radiating heat away from the print head and allows a low viscosity silicone resin to be injected into the frame for assisting in transferring heat.