One-component development station

Details One-component development station One-component development station

G - Physics

03

G

G03G 15/08 (2006.01)

Patent

CA 2295906

The invention relates to a device and method for developing an electrostatic latent image located on a movable image carrier (1) using a non-conductive one- component toner. Said device comprises a toner supply unit (3) for delivering toner particles (5) from a toner reservoir (4) and electrically charging them; a rotating developing drum (2) which receives the charged toner particles from the toner supply unit and transports the received toner particles to a slot between the developing drum and the image carrier; and a dosing unit generating a layer thickness, which unit is positioned along the route of the toner particles from the toner supply unit to the image carrier and produces a uniform toner layer having a defined thickness and charge on the developing drum. The invention also provides for other means for rendering the toner layer homogeneous in terms of layer thickness and charge.

L'invention concerne un dispositif et un procédé qui permettent de développer une image électrostatique latente se trouvant sur un support d'images mobile (1) au moyen d'un toner non conducteur à un seul composant. Le dispositif comprend un dispositif d'alimentation en toner (3), qui amène les particules de toner (5) depuis un réservoir (4) et les charge électriquement; un tambour de développement (2) rotatif, qui reçoit les particules de toner chargées du dispositif d'alimentation et les amène dans un intervalle séparant le tambour et le support d'images; et un dispositif doseur produisant une épaisseur de couche, disposé sur le trajet des particules de toner entre le dispositif d'alimentation et le support d'images, qui produit une couche de toner uniforme ayant une épaisseur prédéfinie et la charge sur le tambour de développement. L'invention comporte d'autres moyens permettant d'homogénéiser la couche de toner dans l'épaisseur de la couche et dans la charge.

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