Impact printing apparatus with interchangeable rotary type wheels

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