Browse Prior Art Database

SIMPLE AND COMPACT METHOD FOR AUTOMATED DUPLEX PRINTING

IP.com Disclosure Number: IPCOM000027274D
Original Publication Date: 1996-Feb-29
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 116K

Publishing Venue

Xerox Disclosure Journal

Abstract

Automated duplex (two-sided) printing is a feature typically not found on low-end carriage printers because of the added cost and additional space required. If cost and space requirements are minimized, a feature enhanced low-end carriage printer having an automated duplex capability may provide significant market advantage.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 54% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

SIMPLE AND COMPACT METHOD

FOR AUTOMATED DUPLEX PRINTING Int. C1. Gold 15/16
Robert V. Lorenze, Jr.

Proposed Classification

US. C1.346 139R

22

32

I

L20

FIG. 2 t \

22

XEROX DISCLOSURE JOURNAL - Vol. 21, No. 1 January/February 1996 17

[This page contains 1 picture or other non-text object]

Page 2 of 2

SIMPLE AND COMPACT METHOD FOR AUTOMATED DUPLEX

PRINTING (Cont'd)

Automated duplex (two-sided) printing is a feature typically not found on low- end carriage printers because of the added cost and additional space required. If cost and space requirements are minimized, a feature enhanced low-end carriage printer having an automated duplex capability may provide significant market advantage.

Proposed is a simple and compact paper path which reverses the side of a print medium which is exposed to a print head. The proposed paper path is combined with means for electronic image rotation such that the second side of the print medium is printed fkom bottom to top. An example of the duplex operation is shown schematically in the accompanying figures.

Referring to Fig. 1 for printing the first side of the print medium, a paper path select mechanism 16 is automatically moved into the indicated position. A sheet of paper is drawn from a main paper tray 22 and travels a path around print cylinder 12 in the direction of dotted arrows 28. The first side of the sheet of paper is printed by a carriage print head 14. As the printed sheet exits print cylinder 12, paper path select mechanism 16 directs the sheet to a single duplex tray 20. The sheet is drawn onto a stack 26 by a feed roller 18.

Duplex tray 20 is preferably of very low profile and positioned slightly above and in close proximity to the main tray 22. An even more compac...