| 摘要 |
PURPOSE:To get rid of the slippage of printing position in overlap printing by preventing the meandering of matter to be conveyed, by a method wherein the rigid conveying component on the surface of which a high friction part is formed, is installed near a platen 1 and the matter to be conveyed is carried by being pinched with both sides of conveying component having the platen between them. CONSTITUTION:In the conveying apparatus of the matter to be printed for the purpose of overlap printing of plural colors on a sheet of blank form, the standard conveying roller 26 installed near a platen 21 is composed of the rigid metal roller to the surface of which fine powders of tungsten carbide, diamond, or ceramics, etc. are adhered. Therefore, when the blank form P is conveyed, the roller 26 conveys the blank form P thrusting its surface with the fine powders and has the very high friction coefficient to the blank form P. Then, when the blank form is conveyed, the very precise conveyance of blank form P is possible without meandering. Further, in the case where the blank form P is conveyed withthe standard conveying roller 26 and the pinch rollers 25 following it by pressure contact in a load Pp, when the standard conveying roller 26 is, in the reverse direction, rotated after it has been rotated by one rotation, the blank form P is back conveyed to the perfectly same position as that before the conveyance because the standard conveying roller 26 is metallic. |
