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:
May. 15, 1984
Filed:
Mar. 16, 1982
Keiji Hasegawa, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An impact printing apparatus automatically discriminates the kind of a type element mounted on a reciprocating carriage of the printer and interchangeable with another type element. A print control program is selected in conformity to the specific kind of type element while desired printing is carried out according to the selected program. Each of the interchangeable type elements is provided with a mark or marks or coded data to be detected by a sensor which is located in a predetermined position on a stationary part of the printer. The mark or coded data is sensed while the type element is rotated or while the carriage carrying the type element is moved. A single mark in the form of a slit is formed in a rotary hub of the type element, and the sensor for detecting the mark comprises a light emitting element mounted on the carriage and a light receiving element mounted on the stationary part of the printer which corresponds to the light emitting element. A plurality of marks in the form of magnetic pieces are arranged on the rotary hub, tongue or mark bracket of the type element, and the sensor comprises a magnetic sensor mounted on the stationary part of the printer.