Electrophotography – Document handling – Copy
Patent
1997-07-25
1998-09-29
Moses, R. L.
Electrophotography
Document handling
Copy
399401, 399364, 399309, G03G 2100
Patent
active
058157883
ABSTRACT:
A printing apparatus prints toner powder images on both sides of an image receiving support (e.g. paper). The apparatus includes an image recording medium for forming a toner powder image thereon; a transfer device for transferring a toner powder image from the image recording medium to the image receiving support; and fixing devices for fixing a transferred toner powder image on the image receiving support by pressure surfaces coming into contact with both sides of the image receiving support. The apparatus further includes image receiving support transport devices for transporting an image receiving support provided with a toner powder image on a first side back to the transfer device for transferring a toner powder image to a second side of the image receiving support. The printing apparatus also includes: adjustable image receiving support transport devices for transporting the image receiving support by transport surfaces coming into contact with the image receiving support, wherein the adjustable image receiving support transport devices, as considered in the image receiving support transport direction, are disposed immediately after the fixing devices. The apparatus employs a shifting device for adjusting the fixing devices and the adjustable image receiving support transport devices in a first and second mode where the pressure surfaces come into contact and out of contact with the image receiving support.
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