The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jul. 01, 2014

Filed:

Mar. 03, 2008
Applicant:

Seung Bok Jung, Seoul, KR;

Inventor:

Seung Bok Jung, Seoul, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A duplex image forming apparatus includes a driving unit which has driving rollers and driven rollers to reversely feed the paper printed on the first surface to a duplex printing part or discharge the paper printed on the first and second surfaces, and a separation unit which separates the driven rollers from the driving rollers while the paper printed on the first surface is reversely fed and registered by duplex rollers of the duplex printing part. Accordingly, when the paper is registered by the duplex rollers, because the paper is not caught in the driving rollers and the driven rollers, the paper can be easily registered.


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