| 摘要 |
PURPOSE:To allow static electricity which generates in a paper holding roller during paper transport to be discharged outside and thereby prevent the storage of static electricity in the paper holding roller by using an electroconductive metal roller for holding paper and installing a metal guide plate on both ends of a shaft to which a paper holding roller is attached, to permit contact between the roller and the plate. CONSTITUTION:A paper holding roller 2 consists of the main body 10 of an electroconductive metal roller and an electroconductive hollow roller bush 5 which is fitted into the both ends of the main body. This roller bush 5 has an electroconductive shaft 6 introduced through the bush. In addition, an electroconductive guide plate 7 is installed on either one of support arms 3, 4 and maintains electroconductivity through contact with the shaft 6. The paper holding roller 2 in contact with printing paper 1 generates static electricity. However, the static electricity runs to the shaft 6 through the roller bush 5, then runs down to a side plate 7 in contact with the shaft 6 and is discharged outside after passing through a stud 8 and a spring 9. |
