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Patent

Document feed device

TLDR
In this article, a document feed device is described, which utilizes intermittently operated endless drive belts to transport a document sheet from an entry guide to an exposure zone and from there to an exit hopper where the drive belts are tensioned over the trailing and leading edges of the work station to provide concentrated drive forces at those points and where the leading edge is slightly elevated from the plane of the paper to provide a region of force relief immediately after passing a leading edge.
Abstract
A document feed device is disclosed which utilizes intermittently operated endless drive belts to transport a document sheet from an entry guide to an exposure zone and from there to an exit hopper where the drive belts are tensioned over the trailing and leading edges of the work station to provide concentrated drive forces at those points and where the leading edge is slightly elevated from the plane of the work station to provide a region of force relief immediately after passing the leading edge. The document is moved into engagement with the drive belt by picker roll mechanism which controls initiation of feed and is accelerated away from the work station by an accelerator roll arrangement which drives the document at a speed faster than it is normally fed to make room for the next document. Alignment is accomplished by an alignment guide having fingers inter-digitated with the plurality of feed belts and providing a positive stop against which the document is lightly urged by the feed belts. The feed belt/work station surface arrangement is such as to provide an increasing urging force in the direction of feed.

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Citations
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Patent

Copier document handler

TL;DR: In this paper, a vacuum belt system in a platen cover unit is described for a xerographic copier with automatic feeding onto, and ejection of documents from, a full size conventional document copying platen.
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TL;DR: In this paper, the registration system includes energy absorbers to absorb a substantial portion of the impact of a document sheet with registration fingers, to protect the document sheet from damage, by providing preset resilient energy absorbing limited movement of the registration fingers.
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TL;DR: In this article, a document sheet is fed with a document feeding belt over the imaging station of a copier, and the document registration is provided on the platen without impacting the document edge, using at least one minor spectrally reflective patch.
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TL;DR: A paper feeding unit for a printing apparatus including conveyance and friction rollers conveying paper from a paper cassette to an image transfer zone, the paper being urged against a frame, having a surface substantially parallel with the image-transfer zone, with one end of a spring mounted on the end of the cantilevered paper guide as discussed by the authors.
References
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Patent

Document handling apparatus

TL;DR: In this paper, a document handling apparatus consisting of an input module (500) for feeding documents one-by-one into the machine, a note handling assembly (400) including a note transport system, secure document analysis assembly, diverter and stacker module.
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Original document feeder with registering gate and movable platen

TL;DR: In this article, a document feeding attachment for a reproducing machine having a exposure station including a transparent supporting member is presented, in which a registering member is adapted to be positioned over the exposure station of the reproducing machines to define therewith a portion of a guide path between a document supply tray and a document receiving tray.
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Apparatus for handling sheets

TL;DR: In this paper, an apparatus for successively cutting a plurality of similar sheets from the leading end of a web which is being fed forwardly, including means for pulling the sheets forwardly from the cutting station, means for forming the travelling sheets into a shingled stream of sheets with the leading ends of each sheet overlying the trailing end of the previously fed sheet, and means for forwarding the turned over shingles to a stacker which is fed from the bottom of the stack.
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Document feeding apparatus

TL;DR: In this paper, a movable catch tray for holding the documents at the supply station and a separator cooperable with the catch tray to maintain documents returning from a supply station segregated from other documents awaiting feeding, at least until the supply of other documents is used up.