| 摘要 |
PURPOSE: A double-sided printing device is provided to increase a printing speed and to reduce manufacturing cost and a size of equipment by shortening a conveying route of a printing paper. CONSTITUTION: A double-sided printing device includes a paper cassette(31) installed at a lower portion of a printer body(30), a developing unit(35) for forming an image on a paper picked up from the paper cassette(31) by means of a pickup roller(33), a resting section(40), a discharging unit(50) for discharging the paper to an exterior, a feed frame(60), a back plate(70), a duplex unit(80) and an alignment unit(90). The paper is introduced between a feeding roller(61) and a supplying roller(34) by means of the pickup roller(33). The feeding roller(61) is installed at a lower end of a feed frame(60). The developing unit(35) includes a photosensitive drum(35a). The resting section(40) is positioned at an upper portion of the developing unit(35). The discharging unit(50) includes first and second discharging rollers(51,52).
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