The utility model provides a printer, it follows the operation of taking off that driving pulley and from the driven pulleys took off positive chronozone easily. Printer (1) has: beat printer head (7), balladeur train (22), it keeps beating printer head (7), driving pulley (31), from the driven pulleys (32), positive chronozone (33), it is connected in balladeur train (22) to erect in driving pulley (31) and from the driven pulleys (2), tensile coil spring (65), it is with from the driven pulleys (32) to first direction (Y1) the application of force from driving pulley (31) separation, and from the driven pulleys moving mechanism (66), it makes from the driven pulleys (32) resist the effort of tensile coil spring (65) and remove to the second direction (Y2) that is close driving pulley (31).