G - Physics – 03 – G
Patent
G - Physics
03
G
G03G 15/09 (2006.01) G03G 13/09 (2006.01)
Patent
CA 2374783
The invention relates generally to processes for electrostatic image development and setpoints that provide uniform image development. In particular, an apparatus and process having a magnetic brush (14) formed from a developing mixture (16) of hard carriers and toner, a rotating magnetic core (20), and a rotating shell (18) enclosing the magnetic core is disclosed. The process implements one or more of the following optimum setpoints: a range of shell surface speeds that prevent toner plate-out, a skive spacing that minimizes sensitivity to variation, a magnetic core speed that minimizes sensitivity to variation, and an imaging member spacing that minimizes sensitivity to variation.
De manière générale, l'invention concerne des procédés de développement d'une image électrostatique ainsi que des points de consigne permettant de développer une image uniforme. Plus particulièrement, l'invention concerne un appareil et un procédé faisant intervenir une brosse magnétique (14) formée à partir d'un mélange de développement (16) de supports durs et de toner, un noyau magnétique rotatif (20) ainsi qu'une enveloppe rotative (18) entourant ce noyau magnétique. Ce procédé met en oeuvre un ou plusieurs des points de consigne optimaux suivants: une gamme de vitesses superficielle d'enveloppe empêchant le dépôt du toner, un espacement de biseau réduisant la sensibilité aux variations, une vitesse de noyau magnétique réduisant la sensibilité aux variations, et un espacement d'élément d'imagerie réduisant la sensibilité aux variations.
Eck Edward M.
Guth Joseph E.
Regelsberger Matthias H.
Stelter Eric C.
Eastman Kodak Company
Heidelberg Digital L.l.c.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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