Paper-feeding mechanism in small-sized printer

Abstract

Abstract PURPOSE: To provide a small-sized printer in which shaft diameters at an insertion part of a roller shaft into a rubber roller are slightly different from each other in the proximity of a part where the rubber roller engages a printing paper, and which performs an inexpensive and high-reliable paper-feeding. CONSTITUTION: (A) In a paper-feeding roller shaft 18a outside which a rubber roller 18b is inserted, sizes of 2 spots shown in arrow marks are slightly different from each other. As a result, the rubber roller 18b is different in also the outside diameters at the 2 spots, and a leftward and a rightward feeding of the printing paper 5 are different from each other, whereby the printing paper 5 is fed in a manner to be always put a side in one-way direction. Thus, it is guided by means of a frame, and is reliably fed without zigzagging. (B) In case the 2 rubber rollers 18b are employed as well, the outside diameters of the 2 rubber rollers 18b are different from each other. (C) The shaft at a part, where the paper-feeding roller shaft 18a is inserted into the rubber roller 18b, can be formed in a taper. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Haruhiko Koto

Bibliographic Details