Abstract: An apparatus is provided for reversing a paper in a printer so as to allow printing of both sides of the paper by a printing unit. A resupplying member feeds unprinted paper to a paper feeding guide coupled to a printing unit and reversing guide. The reversing guide reverses the printed paper and outputs the paper. The resupplying member resupplies the paper having one side printed thereon into the paper feeding guide for printing of the opposite side of the paper.

Abstract: A method for printing both sides of a paper in a printer includes the steps of (1) providing a paper supply portion for guiding the entry of paper into a printing unit, a paper output portion for guiding the paper from the printing unit to be output from the printer, and a reversing portion for reversing the orientation of the paper having passed through the printing unit to be resupplied to the inlet of the printing unit, (2) supplying a sheet of paper to the printing unit through the paper supply portion to print a front image on a front side of the paper, (3) guiding the paper on which the front image is printed to the reversing portion to reverse the orientation of the paper, (4) resupplying the reversed paper to the inlet of the printing unit, (5) printing a rear image on the other side of the paper resupplied to the printing unit, and (6) outputting the printed paper through the paper output portion.

Abstract: A wet electrophotographic printer includes a plurality of electrostatic latent image forming units for forming an electrostatic latent image on a photosensitive belt on an endless track, a developer for fixing a developing solution on a portion of the belt where the electrostatic latent image is formed, a drier for drying the developing solution to form a toner image, a transfer unit for transferring the toner image to a recording sheet, and a carrier unit having a plurality of carrier rollers rotating the photosensitive belt. The transfer unit includes a transfer roller confronting a carrier roller with the photosensitive belt interposed therebetween, a pressing roller confronting the transfer roller with the recording sheet interposed therebetween, and elevating means for elevating the transfer roller and the pressing roller with respect to the transfer roller within a predetermined timing interval.

Abstract: A semiconductor manufacturing apparatus using a suctorial device for handling wafers includes a main vacuum line, a manufacturing apparatus for performing predetermined manufacturing processes with respect to the wafers, and a vacuum line for connecting the main vacuum line to the suctorial device. The vacuum line has a first vacuum line directly connected to the main vacuum line, and a second vacuum line having one end connected to the first vacuum line, the other end connected to the suctorial device through a connector installed in the manufacturing apparatus and a body installed in the manufacturing apparatus. The manufacturing apparatus may also contain a plurality of suctorial devices with a corresponding plurality of second vacuum lines and connectors.