| 摘要 |
PROBLEM TO BE SOLVED: To increase a bending rigidity of a support member for supporting an ink doctor. SOLUTION: Square holes 10 formed at a plurality of movable members 8 are engaged with a prismatic support member 7 fixed to a frame so as to have gaps in a longitudinal width direction of the member 7. Ink doctors 5 are rotatably mounted at outsides of the members 8. A switching unit 17 for individually switching positions of the doctors 5 by moving the members 8 in the longitudinal width direction of the member 7 by controlling supply of the air by using a switching valve 28 between the members 8 and the member 7 is provided. Opposed grooves 12 and 13 are formed on surfaces of the holes 10 and surface of the member 7 slidably brought into contact with each other. The valve 28 is mounted at a bottom surface of the groove 13 of the member 7 and disposed in both the grooves 12 and 13.
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