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:
Jun. 22, 1982
Filed:
Jun. 24, 1980
Nobuo Iwata, Tokyo, JP;
Takami Suzuki, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Each of resilient tongues of a type wheel for use in a serial printing apparatus carries one or more type members. Each of the type members is provided with a curved or concave type face whose center of curvature lies on an axis of a paper supporting platen so that the type face comes into even and tight contact with the platen surface in a printing position. The curved type face is formed on a projection having a forward end which is tapered toward or away from a plane perpendicular to a rotary axis of the type wheel. Further, the each of the type members is provided with a back face which is formed on a back portion of the curved type face. The back face is driven by a hammer which is oriented in a predetermined direction toward the axis of the platen so as to be evenly and entirely engaged with a striking face of the hammer in the printing position. The back portion of the curved type face comprises a projection which is tapered toward or away from a plane perpendicular the rotary axis of the type wheel. The back face is so inclined as to be parallel to a direction perpendicular to the predetermined direction of the hammer in the printing position.