Printer and copier for performance-adjusted monochrome...

G - Physics – 03 – G

Patent

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Details

G03G 15/23 (2006.01) G03G 15/01 (2006.01)

Patent

CA 2282846

The invention relates to a printing or copying apparatus for performance-adjusted monochrome or colour printing on one or both sides of a recording medium. On both sides of a transport channel (11) said apparatus has an electrophotography module (E1, E2) with an endless photoconductor (13) and a transfer module (T1, T2) with an endless transfer ribbon (19). A control device (ST) controls the electrophotography modules (E1, E2), transfer modules (T1, T2) and transport device (38) in such a way that, in a collective state, colour-separated toner images are serially transferred from the electrophotography module to the transfer ribbon (19). The collective toner image generated in this way is transferred to the recording medium in a start-stop operation. In a continuous operating state assigned to monochrome printing, individual toner images are transferred directly from the electrophotography module via the transfer module to the recording medium (10).

L'invention concerne un dispositif d'impression et de copie pour réaliser une impression monochrome ou en couleurs, adaptée à des performances, sur un ou deux côtés d'un support. Ledit appareil comporte, sur les deux côtés d'un canal de transport (11), un module électrophotographique (E1, E2) comportant un photoconducteur sans fin (13), ainsi qu'un module de transfert (T1, T2) avec une bande de transfert sans fin (19). Une unité de commande (ST) commande les modules électrophotographiques (E1, E2), les modules de transfert (T1, T2) et une unité de transport (38) de sorte que, à l'état combiné, des images de toner à sélection de couleurs soient transférées de façon sérielle par le module électrophotographique sur la bande de transfert (19). L'image de toner combinée ainsi obtenue est transférée en mode arrêt-marche sur le support d'impression. En mode continu, affecté à l'impression monochrome, des images de toner individuelles sont transférées directement du module électrophotographique au support d'impression (10) par l'intermédiaire du module de transfert.

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