| 摘要 |
PURPOSE:To adjust the zero point of a blade easily, and to improve the efficiency of adjustment work by loading a screw shaft device on an adjusting screw screwed into a machine body under the state in which the adjusting screw can advance or retreat in the same direction as a screw shaft. CONSTITUTION:When a second gear 3 is turned by a motor 1, a bush 8 and a screw shaft 10 are each rotated by the different number of revolution in an adjusting screw 7 through a third gear 4 and a fourth gear 5. The screw shaft 10 is moved in the left and the right to the bush 8 by forward and reverse revolution in the direction of rotation of the second gear 3. A blade 12 is shifted brought into contact with the screw shaft 10 by a return spring 13 with the movement of the screw shaft 10, and a clearance between the nose of the blade 12 and the outer circumferential surface of an original roller 14 is expanded or narrowed, thus increasing or reducing the quantity of ink supplied to the original roller 14. The adjusting screw 7 is screwed into a tapped hole 15 formed to a machine body 6, and the position of the blade 12 is brought near to or separated from the original roller 14 through the screw shaft 10, etc. by the advancing or retreating of the adjusting screw 7. |
