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. 12, 2005
Filed:
Jul. 18, 2003
Kazuhiko Tanaka, Kuwana, JP;
Kazuhiko Tanaka, Kuwana, JP;
Denso Corporation, , JP;
Abstract
An object of the present invention is to disclose an apparatus and method for printing a spark plug, wherein an excellent print quality is obtained and maintained. The printing apparatus comprises: a marking roller for forming an ink film on an intaglio on itself; a transfer roller for transferring the ink film from the intaglio to the spark plug insulator; an ink supply nozzle for supplying the intaglio with the printing ink; and a doctor blade for scratching a surplus ink which does not contribute to form the ink film. the concave depth of the intaglio is made to be between 15 μm and 20 μm, both inclusive, thereby optimizing the ink drying.