BAR CODE READ METHOD AND BAR CODE READ DEVICE

摘要

A bar code reader (22) is moved in back and forth direction Y to be brought into contact with and apart from the surface of a bar code (13) with a predetermined cycle and moved in the vertical direction Z along the surface of the bar code (13) with a predetermined cycle. By a ratio of numbers of teeth of a back-and-forth-direction movement gear (48) and a vertical-direction movement gear (49) of a drive mechanism (27), the movement cycle in the back and forth direction Y and the movement cycle in the vertical direction Z are set in the bar code reader (22). The movement cycle of the bar code reader in the vertical direction Z is made shorter than the movement cycle in the back and forth direction Y. The bar code reader (22) moves in the back and forth direction Y and the vertical direction Z so as to read the bar code (13).