| 摘要 |
PROBLEM TO BE SOLVED: To enable easy control of the amount of ink supply in a wide range. SOLUTION: An ink fountain roller 290 constituting an ink fountain 72 and a cam 328 rotate synchronously with each other, being driven by a motor, and thereby an arm 323 having a cam follower 325 being in contact with the cam 328 swings around a support shaft 322. In a state wherein the cam follower 325 comes into contact with a root part of the cam 328, an ink ductor 297 supported in the fore end of a first arm part 397 in the arm 323 comes into contact with the ink fountain roller 290, and in a state wherein the cam follower 325 comes into contact with a ridge part of the cam 328, the ink ductor 297 supported in the fore end of the first arm part 397 in the arm 323 comes into contact with an ink distributing roller 296. |
