US 7,623,814 B2Granted

Single-pass bypass printing method and apparatus

AssigneeXerox Corporation

InventorsYouti Kuo, Joseph H Rowe

Life of this patent

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Abstract

A single-pass bypass printing machine including: (a) a moveable photoreceptor belt for moving through an imaging path; (b) apparatus for supplying and feeding print media along a main media path and a bypass media path; (c) a first stage including at least three imaging subassemblies for forming a first color toner image on the photoreceptor; (d) a first transfer station for transferring the first color toner image onto the print media; (e) apparatus for diverting the print media from the main media path onto the bypass media path; (f) a second stage including at least one marking engine for forming a second color toner image on the photoreceptor; (g) apparatus for moving the print media from the bypass media path back into the main media path; and (h) a second transfer station for transferring the second color toner image onto the print media, forming a desired multi-color toner image on the print media.

Claims21

Dependent claims

A single-pass bypass printing method of forming a multi-color toner image in a printing machine, the method comprising:

(a) moving an endless charge retentive member having a charge retentive surface through an imaging path including a portion having a first direction;
(b) first forming a first color toner image on said moving charge retentive surface;
(c) moving a print media along a main media path having said first direction;
(d) first transferring said first color toner image at a first transfer station from said moving charge retentive surface onto a first side of said print media;
(e) diverting said print media from moving along said main media path having said first direction into moving along a bypass media path having a second and different direction;
(f) next forming a second color toner image on said moving charge retentive surface;
(g) moving said print media along said bypass media path from said second direction back into said main media path having said first direction;
and
(h) next transferring said second color toner image at a second transfer station from said moving charge retentive surface onto said first side of said print media, thereby forming a desired multi-color toner image.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/767,892Filed 25 Jun 2007
Published: US 2008/0317505 A125 Dec 2008
Granted: 24 Nov 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G03G 15/0178
Structure of complete machines: using more than one reusable electrographic recording member, e.g. one for every monocolour image
G03G 15/0189
Using more than one reusable electrographic recording member, e.g. one for every monocolour image: primary transfer to an intermediate transfer belt
G03G 15/0194
Using more than one reusable electrographic recording member, e.g. one for every monocolour image: primary transfer to the final recording medium
G03G 2215/00021
Special arrangement of entire apparatus: plural substantially independent image forming units in cooperation, e.g. for duplex, colour or…