| 摘要 |
PURPOSE:To take a copy at a high speed without waste by arranging outer circumferential surfaces of clamping drums having different outer diameters at an original readout position selectively, and providing fitting parts of the clamping drums to a base frame successively. CONSTITUTION:A clamping drum 3 provided oppositely at the original readout position A on contact glass 8 is composed of a cylinder part 27, flanges 28 at both its ends, and a center shaft for coupling them in one body, and both end parts of the center shaft 24 are coupled with front and rear fitting frames 30 through bearings 29. Both fitting frames 30 are fixed to a couple of front and rear fitting parts 32 formed on the base frame 31 of a copying machine by screws detachably. Namely, the front fitting part 321 has a cut groove made in the base frame 31 and screw holdes formed on the left and right hand sides of the cut groove, and the rear fitting part 322 has a cut groove and a positioning hole where a pin projecting from the rear fitting frame 302 is fitted. |
