| 摘要 |
PURPOSE:To remarkably enhance an operability with respect to a cartridge and reduce the size of the cartridge by a method wherein knob parts of a plurality of cartridge are so provided that the knob parts of adjacent cartridges are disposed on different positions. CONSTITUTION:The heights of knob parts 12a-15a of cartridges 12-15 from a stage 10a are all different from each other. The heights are reduced in the order of the knob parts 14a, 12a, 15a, and 13a. In this construction, a sufficient space can be obtained between the knob parts of the adjacent cartridges, thereby preventing occurrence of such an erroneous operation that together with a specific cartridge to be removed, a cartridge adjacent thereto is also erroneously removed by the same operation. In addition, the knob parts 12a-15a are corresponding to fitting holes 17-20 of a cartridge holder 10c in a ratio of 1:1. |
