PAPER GUIDE DETACHING MECHANISM OF DOT PRINTER

PROBLEM TO BE SOLVED: To prevent a paper guide from coming in contact with an adjacent member on a passage in which it is guided to move by a slide rail by installing at least each two pieces of slide bush projections and slide rail channels respectively at the time of take-out and insertion of a paper guide. SOLUTION: Two pieces of projections are formed on a slide bush 29 in order to prevent a rubber roller 8, a platen 4, a printing head, or the like arranged on a passage for retraction and insertion of a paper guide 26 frome interfering with a paper guide 26, and also two channels of slide rails 30 are formed as well. These two projections are restrained in its rotation, and the range of its movement is limited in rotation so that the paper guide 26 does not come in contact with the printing head 1 and platen 4. Also, when the paper guide 26 is fastened to a mechanical frame 15, the inside guide curved part 16 is pressed against a stay 17 to make a projection 19 to fit in the recessed part 20 of the mechanical frame 15. Therefore, the paper guide can be taken out and inserted readily without damaging other parts.