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Browse Prior Art Database

Print Belt Exit Belt Transfer Mechanism

IP.com Disclosure Number: IPCOM000084365D
Original Publication Date: 1975-Nov-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 94K

Publishing Venue

IBM

Related People

Gravell, LR: AUTHOR [+3]

Abstract

In printing systems employing ink jet printers, to avoid ink smear it is necessary to transport the printed document without contacting the printed area prior to the time the ink dries. Shown is a system including two transport paths which accomplishes this.

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Print Belt Exit Belt Transfer Mechanism

In printing systems employing ink jet printers, to avoid ink smear it is necessary to transport the printed document without contacting the printed area prior to the time the ink dries. Shown is a system including two transport paths which accomplishes this.

As shown in the figure, documents approach the exit path lying on the print belts and clamped along the leading edge by clamps 1-5. The exit belt is continuously running at about 2.6 inches per second.

Before reaching the exit belt, the clamped document's left edge is pulled through the preentry rollers. These are two nondriven, low-inertia rollers which contact one-quarter inch of the document's left edge. The upper roller has a high-friction urethane surface. The roller beneath the document is lightly spring loaded against the upper roller. The result is a set of free-turning rollers which pinch the document between them.

The entry roller at the exit path is continuously driven by the exit belt wrapped around it. The lower roller is lightly loaded against it, and forms a continuously running driving point for documents once they have reached this point. Immediately following the entry roller, the exit belt backup pad begins its clamping effect on the exiting document.

The clamps open and release the document immediately after it gets into the entry rollers. As can be seen, the clamps diverge from the paper and go around the rear print belt pulleys soon after opening....