| 摘要 |
PURPOSE:To provide a printer having such a construction as not to require any detecting means for a printing position or any selecting and controlling means for a preset value, by connecting a home position signal forming means to an operating lever for changing over between printing on a rolled paper and that on a sheet form paper. CONSTITUTION:In the printer 1 capable of selectively printing on the rolled paper 7 fitted in the printer or on the sheet form paper 8 placed on a table by changing over the operating lever 9, a home position detecting plate 20 is connected to a shaft 19 for the lever 9. The detecting plate 20 is placed coaxially with a hammer 13 at a position between a gear 18b and an outside surface of a type drum 10. On the top face of the detecting plate 20, a switching element 21 consisting of a ferromagnetic material is provided at a position substantially faced to the circumference of the type drum 10. When the drum 10 is rotated and a magnetic body 22 approaches the switching element 21 provided on the detecting plate 20, the element 21 constitutes a relay circuit, and generates a home position signal indicating a specified position of a plurality of types provided on the drum 10. The signal is used for controlling an electric current passed through each solenoid. |
