Ink pump selective driver and ink jet printer incorporating the same

摘要

In a pump driver for selectively driving a plurality of pumps (7A-7D), a sun gear is rotated by a single drive source. A planetary gear (22) is meshed with the sun gear (20). A planetary carrier (21) rotatably supports the planetary gear revolvably around the sun gear. A plurality of driving gears are arranged in a one-by-one manner with respect to the pumps such that the planetary gear meshes with one of the driving gears to selectively drive one of the pumps. A revolution limiter (23) allows a revolution of the planetary gear in a first direction and restricts a revolution of the planetary gear in a second direction opposite to the first direction at a position where the planetary gear meshes with one of the driving gears. <IMAGE>