PAPER CARTRIDGE OF PRINTING DEVICE

摘要

PURPOSE: A paper cartridge of printing device is provided to stably feed papers. CONSTITUTION: A paper cartridge includes a paper guiding member(30) installed to be moved by a guide shaft(20) mounted to a paper cartridge main body(10) and aligning stored papers(P); and a frictional force providing device including a ball bearing assembly including a ball(41) installed to the paper guiding member to roll and to contact with an outside of the guide shaft and a spring elastically pushing the ball toward the guide shaft, installed to the paper guiding member and rolling on a periphery of the guide shaft for elastically pushing the guide shaft so as to suppress movement of the paper guiding member by outside force while providing frictional force between the guide shaft and the paper guiding member.