JPS6026548A - Automatic document feeder of copying machine or the like - Google Patents

Abstract

PURPOSE:To smoothly discharge a document by disposing a curl pressing piece in the vicinity of a document outlet of a document storing portion. CONSTITUTION:A curl pressing piece 14 for controlling the curling of a document 5 is disposed in the vicinity of a document outlet 7 of a document storing portion 4. In this arrangement, the curled document 5 is corrected by the above curl pressing piece 14 to be discharged from the document outlet 7, which can avoid misfeed and reliably feed a document to a copying machine or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to an automatic document feeder that automatically feeds documents to a copying machine or the like.

2. Description of the Related Art Conventionally, as a document feeder for automatically supplying a document to a copying machine or the like, there is a document feeder that is provided with a vacuum conveyor at a document exit. The vacuum conveyance machine consists of an endless conveyor belt and a suction means that sucks the originals to be conveyed and brings them into close contact with the conveyor belt, and carries out the originals stored in the original @ tori section one by one from the bottom. Then, it is supplied onto the platen of the copying machine. However, in the above-mentioned conventional automatic document feeder, if the edges of the document stored in the document storage section are curled, misfeed occurs and the document cannot be fed out smoothly.

Purpose of the Invention The present invention was made with the purpose of solving such problems, and is to provide a copying machine, etc., which is capable of smoothly unloading documents one by one even if the documents stored in the document storage section are curled or the like. The present invention aims to provide an automatic document feeder.

An automatic copying machine, etc., which is provided with a curl presser near the document ejection port of the document storage section to prevent the document stored in the document storage section from curling and to ensure the reliable conveyance of the document. Document feeder.

EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the drawings. In the figure, l is the main body of this device which is placed on the platen 3 of the copying machine 2, and the document storage part 4 has an open top in the center of the upper part.
is provided, and original documents 5 to be copied are stored in this document storage section 4 in a stacked state. Reference numeral 6 denotes a vacuum conveyance mechanism provided at the lower part of the document ejecting lower side of the document storage section 4, which sucks the H document 5 with an endless feed belt 8 rotated in the direction of the arrow by a drive system (not shown). Suction means 9 such as a blower that presses onto the feed belt 8
The documents 5 stored in the document storage section 4 are sucked up one by one from below, and the feed belt 8 sends them from the carry-out lower through the conveyance path 10 to the platen 3 and the conveyor belt 11 provided above. It is designed to be sent between The conveyor belt 11 is provided with its lower side along the upper surface of the platen 3, and conveys the imported original 5 onto the platen 3, and after copying is completed, it is discharged out of the main body 1 from the discharge port 12, or is reversed. Then, it is sent to the original II4 storage section 4 again.

On the other hand, an air knife 13 is installed above the document exit port 5 of the document storage section 4. The air knife 13 has a large number of nozzles+3 that eject compressed air toward the leading edge of the document 5.
7Z, and the compressed air ejected from these nozzles 13α loosens the leading edge of the stacked originals 5, and approximately triangular curl presser pieces 14 are horizontally placed at the corners on both sides of the original transport lower. The curling of the original 5 is suppressed by pressing the leading end corner of the original 5 from above.

Note that 15 is a site guide.

Effects of the Invention As described in detail above, the present invention is provided with a curl presser piece 14 for suppressing curling of the original 5 near the original transport lower of the original storage section 4, so that even curled original 5 can be prevented from curling. Since the document is conveyed out from the document conveyance lower after the curl is corrected by the holding piece 14, it is possible to reliably supply the document to a copying machine or the like without causing misfeed.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a sectional view and FIG. 2 being a perspective view of the vicinity of the document exit. 4 is a document storage section, 5 is a document, 6 is a vacuum conveyor,
7 is a document exit, and 14 is a curl presser piece. Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Masaaki Yonehara Patent Attorney Tadashi Hamamoto

Claims (1)

[Claims] The originals 5 stored in the original storage unit 4 in a stacked state are
In a vacuum conveyor cat 6 that picks up documents one by one from below and sends them out to a copying machine or the like, there is a curl near the document transport lower of the document storage section 4 to prevent the document 5 stored in the document storage section 4 from curling. An automatic document feeder such as a copying machine, which is provided with a presser piece 14.