Browse Prior Art Database

FLOW REDUCTION ON GATED TRANSPORTS

IP.com Disclosure Number: IPCOM000025251D
Original Publication Date: 1984-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 73K

Publishing Venue

Xerox Disclosure Journal

Abstract

Maximizing blower utilization on a gated vacuum paper transport is achieved by implementing wide transport belts 25 with a textured exterior surface 29 as shown in Figure 2. A hole pattern is punched near both edges and along the length of each belt. A vacuum is then drawn via channels 28, that are recessed into platen surface 30 beneath the belts. As the paper contacts the belt surfaces, the texture prohibits the holes from being sealed. However, a sufficient impedence is created to distribute the vacuum over the covered exterior belt surface.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

2 20

FLOW REDUCTION ON GATED TRANSPORTS
Jonathan J. Burnard

Proposed Classification US. CI. 271/307
Int. CI. R65h 31/00

IT

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l? 1 Volume 9 Number 2 March/April 1984

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FIG. 2

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Page 2 of 2

FLOW REDUCTION ON GATED TRANSPORTS (Cont'd)

Maximizing blower utilization on a gated vacuum paper transport is achieved by implementing wide transport belts 25 with a textured exterior surface 29 as shown in Figure 2. A hole pattern is punched near both edges and along the length of each belt. A vacuum is then drawn via channels 28, that are recessed into platen surface 30 beneath the belts. As the paper contacts the belt surfaces, the texture prohibits the holes from being sealed. However, a sufficient impedence is created to distribute the vacuum over the covered exterior belt surface.

Slots 32 are located at both ends of each channel to allow air to flow down the channels into the manifold and to the blower. By splitting the channels and recessing the platen only under the belt hole patterns the width of the channels and slots can be substantially reduced. This reduction in width also decreases the amount of air flow that is required to maintain a vacuum in the channel. The reduced air flow allows the use of a smaller or less expensive blower. It also provides the flexibility of...