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Method of operating a vacuum corrugated belt feeder to improve sheet acquisition from a feed supply

a conveyor belt and vacuum corrugated technology, applied in the field of printers and copiers, can solve the problems of difficult to separate the top sheets, difficult to get air between the sheets,

Inactive Publication Date: 2005-09-29
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] A method of operating a vacuum corrugated belt feeder during a feed cycle wherein the paper is taken away by a belt which is activated when a feed clutch is energized, and wherein the vacuum is actuated at the start of the feed cycle and de-actuated prior to, or at the same time as the feed clutch is de-energized

Problems solved by technology

The smoothness of the paper makes it difficult to get air between the sheets to allow the top sheet to be separated from the rest of the stack.
It is also more difficult to separate the top sheets when the paper is a heavier paper, or when the paper is prepunched.

Method used

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  • Method of operating a vacuum corrugated belt feeder to improve sheet acquisition from a feed supply
  • Method of operating a vacuum corrugated belt feeder to improve sheet acquisition from a feed supply
  • Method of operating a vacuum corrugated belt feeder to improve sheet acquisition from a feed supply

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Embodiment Construction

[0017] Following is a detailed description of the drawings which show the vacuum belt feeder with positive air pressure separator as described in U.S. Pat. No. 6,629,692. Although this system is described in detail, the present invention is not limited to use in this particular system. Any printer / copier which uses a combination of vacuum, positive air pressure and a high pressure air source to lift and separate the top sheets from a feed stack may make use of this invention.

[0018] The detailed description is written to a top feed vacuum corrugated feed device, but the present invention is also useful for a bottom feed vacuum belt feed device. In the case of a bottom feed device, instead of separating the top sheet, the vacuum, airknife and high pressure separator would be separating the bottom sheet.

[0019] Various aspects of the invention are presented in FIGS. 1-9 which are not drawn to scale and in which like components are numbered alike. Referring now to FIGS. 1-2, a receiver...

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Abstract

A method of operating a vacuum corrugated belt feeder during a feed cycle wherein the paper is taken away by a belt which is activated when a feed clutch is energized, and wherein the vacuum is actuated at the start of the feed cycle and de-actuated prior to, or at the same time as the feed clutch is de-energized. According to an aspect of the invention the improvement comprises pulsing the positive air pressure separator by actuating and de-actuating the positive air pressure separator during the feed cycle, and pulsing the high pressure separator by actuating and de-actuating the high pressure separator during the feed cycle.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This is a 111A application of Provisional Application Ser. No. 60 / 557,512, filed Mar. 29, 2004, entitled METHOD OF OPERATING A VACUUM CORRUGATED BELT FEEDER TO IMPROVE SHEET ACQUISTION FROM A FEED SUPPLY by Michael T. Dobbertin, et al.BACKGROUND [0002] The present invention is in the field of printers and copiers. More specifically this invention relates to a receiver sheet supply and feed apparatus, including a vacuum corrugated feeder, and which may have a positive air pressure separator on such printers and copiers. This invention is useful for the apparatus described by the U.S. Pat. No. 5,344,133 “Vacuum belt feeder having a positive air pressure separator and method of using a vacuum belt feeder” by Jantsch et al, which patent is hereby incorporated by reference in its entirety. The incorporated patent refers to a vacuum, a first positive air supply, and a second positive air supply. The first and second positive air supplies are ...

Claims

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Application Information

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IPC IPC(8): B65H3/12B65H3/48B65H7/16
CPCB65H3/124B65H3/48B65H7/16B65H2406/122B65H2515/342B65H2220/09B65H2220/02B65H2515/34
Inventor DOBBERTIN, MICHAEL T.SCIURBA, THOMAS K.SUK, ANTON
Owner EASTMAN KODAK CO