Patent Number: 6,254,221

Title: Printing apparatus with focusing of toner particles

Abstract: Various methods and apparatus are disclosed for facilitating the loading, transportation, and modulation of toner particles on a print head, as well as the transfer of toner particles onto a print medium. These methods and apparatus relate to the optimization of various elements on the print head to improve the speed and control of toner particles on the print head, as well as to the alteration of the electric field in the vicinity of the end of the print head.

Inventors: Bard; Erik Christopher (Provo, UT), Denton; Gary Allen (Lexington, KY), Dreyfuss; David Daniel (Nicholasville, KY)

Assignee: Lexmark International, Inc.

International Classification: G03G 15/00 (20060101); G03G 15/34 (20060101); B41J 002/06 (); G03G 015/08 ()

Expiration Date: 07/03/2018