PRINT ROLLER, CASSETTE FOR PRINTER HAVING PRINT ROLLER, AND PRINTER

摘要

PROBLEM TO BE SOLVED: To attach or remove a print roller efficiently by improving the peripheral structure of the print roller disposed at the printer section of an electronic balance with printer. SOLUTION: A power transmission gear is fitted removably to the shaft 80 of a print roller. A groove 84 is made in the roller shaft 80 side and a pallet- like protrusion 86 is formed on the gear side. When the gear is fitted to the roller shaft 80, the protrusion 86 is engaged in the groove 84. When the gear is removed from the roller shaft 80, the protrusion 86 is disengaged in the groove 84. Since the gear can be fitted to or removed from the print roller easily by one touch, the print roller can be attached to or removed from the frame 30 easily in a short time.