| 摘要 |
<p>PURPOSE:To discharge a sheet, processing, such as perfect printing, of which is completed, to the outside as rapidly as possible, in a running passage switching mechanism for a sheet effective to a perfect printing device wherein after printing is applied on the surface of a sheet, such as an ordinary sheet, the sheet is turned over and conveyed to a transfer part again, and a toner image is transferred to the back also and fixed. CONSTITUTION:In a device wherein a sheet running in a one-way through rolling forward of forward reverse rollers 16... is run in a reverse direction through reversing of the forward reverse rollers 16... and enters a different conveyance passage and in this way, a running passage for the sheet is switched, the forward reverse rollers 16... are set so that a velocity of periphery during reversing is increased to a value higher than that during running forward.</p> |
