JPS641301Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic sheet document handling device for an image forming apparatus such as a copying machine, which automatically separates multiple sheet documents, supplies them to a document exposure section, and discharges them after the copying cycle. It is.

Conventionally, this type of device was developed in Japanese Patent Application Laid-Open No.
As shown in Publication No. 113544, there is a first inlet having a first separating and feeding means for separating and feeding stacked sheet originals from the top, and a second inlet for separating and feeding stacked sheet documents from the bottom. a second inlet having separate feeding means;
It is equipped with a tray that can be moved between the first entrance and the second entrance loaded with sheet originals, and has a configuration that allows sheet originals to be selectively separated and fed from the top or the bottom. What exists is known.

In addition, as shown in Japanese Patent Application Laid-Open No. 56-17837, there is also a first
and a second separation and supply means for separating and supplying from the bottom, and by selecting and rotating either the first or second separation and supply means,
There is known a structure in which a sheet document can be selectively separated and fed from the top or the bottom.

However, the configuration of the conventional example described above has disadvantages such as being complicated and large in size.

For example, the device shown in Japanese Patent Application Laid-Open No. 53-113544 requires two inlets, a structure for switching trays, and a separate feeding means for each inlet. Therefore, the configuration becomes complicated and the device tends to become large.

In addition, the device disclosed in Japanese Patent Application Laid-Open No. 17837/1983 also requires separation and feeding means for upper separation and lower separation, respectively, as in the above-mentioned invention. The device becomes complicated and tends to increase in size.

That is, although normally one set of separating and feeding means is required, two sets of separating and feeding means are required due to the increased functionality, and the apparatus becomes larger accordingly.

The purpose of this invention is to provide an inexpensive and stable separation mechanism that eliminates the multiple mechanisms conventionally required, and also to provide an automatic sheet document separation mechanism that makes it possible to extremely easily change the order in which sheet documents are fed. The purpose is to provide handling equipment.

The automatic sheet document handling device according to the present invention is an automatic sheet document handling device that separates and feeds stacked sheet documents one by one. , a part of the rotating body is configured to be movable in the direction toward and away from the sheet original, and when separating the stacked sheet originals one by one from one side, the rotating body on one side is moved to feed the sheet original. direction, and moves the rotating body on the other side in the direction of returning the sheet original, and also moves a part of the rotating body on the other side away from the sheet original, and conversely moves the rotating body on the other side from the other side of the stacked sheet original When separating sheets one by one, the rotating direction of the rotary body is reversed and a part of the rotary body on one side is separated from the sheet document.

Embodiments of the present invention shown in the drawings will be described below. FIG. 1 shows a sheet document separating section in an embodiment of the sheet document automatic handling device according to the present invention. In the figure, numerals 1, 2, 3, and 4 are belts disposed on both sides of the sheet-original separating section, where belts 1 and 2 are sheet-original feeding belts, and 3 and 4 are sheet-original separating belts. The belts 1 and 2 are passed between rolls 5 and 6 and 7 and 8, respectively, and are driven so that the side that contacts the sheet original (lower side in the illustrated example) moves in the sheet original feeding direction. Belts 3, 4 are connected to rolls 9, 10 and 1, respectively.
1 and 12, and is driven to move the side in contact with the sheet original (the upper side in the illustrated example) in the sheet original return direction. In this way, the stacked sheet originals are separated one by one from the top and sent to the original exposure section.

However, in the above sheet document separation mechanism,
It is preferable to use two belts 1 and 2 in the sheet original feeding direction and one belt 3 in the sheet original returning direction. For this purpose, means for retracting the belt 4 downward is provided.

In the embodiment shown in FIG. 1, the belt 4 is configured to be able to swing around the axis of the roll 11, for example, to a position indicated by a broken line 4', for example, to a position where the roll 12 is separated by about 0.5 mm. A favorable separation effect is achieved by.

FIG. 2 shows how the belts 1, 2, 3, and 4 are driven in the apparatus shown in FIG. 1 so that the belts 3 and 4 are moved in the sheet original feeding direction and the belts 1 and 2 are moved in the sheet original returning direction. Show what you do. In this case, it is preferable to retract the belt 1 upward, and for this purpose, the belt 1 is constructed so that it can be swung around the axis of the roll 6 to a position where the roll 5 is separated by about 0.5 mm. , thereby obtaining a favorable separation effect.

As described above, as a mechanism for retracting the belt 4 and the belt 1, if there is an elongated hole configured so that the roller 5 and the roller 12 escape from a predetermined position for separation with the roller 6 and the roller 11 as axes, respectively. The present invention can be made even more effective by automatically approaching and separating by controlling the rotational direction.

As mentioned above, the device according to the present invention is configured to be able to selectively perform separation from the top and from the bottom with only one set of separation and supply means, so the device can be made smaller. is possible.

The reason why both types of separation can be performed with just one set of separation and supply means is that the structure is designed to reduce the number of rotating bodies that are rotated in the opposite direction by retracting a part of them to perform the separation action. . With this configuration, the feeding force by the rotary body rotating in the normal rotation direction is reliably stronger than the return force by the rotary body rotating in the reverse rotation direction, so that separation is performed reliably.

For the above reasons, upper separation or lower separation can be performed using only one set of separation and supply means by selectively switching the rotation direction of the rotating body on one side and the rotating body on the other side.

[Brief explanation of the drawing]

1 and 2 are perspective views showing a separating section of an embodiment of the present invention. 1, 2, 3, and 4 are belts, and 5 to 12 are rolls.

Claims (1)

[Scope of Claim for Utility Model Registration] In an automatic sheet document handling device that separates and feeds stacked sheet documents one by one, a plurality of rotating bodies 1, 2, 3, and 4 are arranged so as to be reversible, and the parts 1 and 4 of the rotating bodies are configured to be movable in the direction toward and away from the sheet originals, and one of the front and back sides of the stacked sheet originals. When separating sheets one by one from the side of Part 4 of the rotary body is separated from the sheet original, and conversely, when separating the stacked sheet originals one by one from the other side in the front and back direction, the rotary bodies 3 and 4 on the other side are moved to feed the sheet original. direction, the rotating bodies 1 and 2 on one side are rotated in the sheet original returning direction, and a part 1 of the rotating body on one side is separated from the sheet original. Automatic handling equipment.