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:
Jan. 19, 1988
Filed:
Sep. 19, 1985
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ; C04B / ;
U.S. Cl.
CPC ...
400124 ; 101 9305 ; 501 97 ;
Abstract
A printer guide member for guiding print wires in a dot matrix printer, which comprises a thin ceramic sintered body containing 60% by weight or more of Si.sub.3 N.sub.4 and having a plurality of guide holes perforated therethrough. In addition to Si.sub.3 N.sub.4, this thin ceramic sintered body further includes (a) not more 10% by weight of Al.sub.2 O.sub.3 and (B) at least one component as an additive selected from the group consisting of (i) not more than 10% by weight of a rare earth element oxide, (ii) not more than 10% by weight of AlN, and (iii) not more than 10% by weight of at least one oxide selected from the group consisting of TiO.sub.2, MgO and ZrO.sub.2.