JPH03144664A - Automatic document feeder - Google Patents

Abstract

PURPOSE:To facilitate an operation by adjusting and setting a document stopper to a prescribed position in response to the movements of document side regulating plates. CONSTITUTION:The document side regulating plates 4 and 4 are attached to a document tray 3, which is fitted to the side of a main body 2, so that it can slide in the document width direction. The document stopper 8 is provided on a document receiving tray 7 so that documents ejected from an ejection port 6 are positioned and loaded there in a neat pile. The document stopper 8 is slidably attached in the document advancing direction so that it can correspond with documents of various sizes. Additionally it is connected to the document side regulating plates 4 via a rack and pinion 9 in the main body 2. When the document side regulating plates 4 are operated by the rack and pinion 9 in order to regulate the position of a document in its width direction, the document stopper 8 follows; therefore, the position where the front end of the document in its advancing direction stops can be automatically set. Since two actions for aligning a document, the adjustment of the positions of the document side regulating plate and the document stopper, are performed only at one time, handling is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic document feeder, and more particularly to an automatic document feeder that automatically feeds a document to an image forming apparatus such as a copying machine.

[Conventional technology]

Conventionally, an automatic document feeder is used with a main body 2 placed on top of an image forming apparatus 1 such as a copying machine, as shown in FIG.

A document tray 3 for supplying the document P is attached to the side of the main body 2, and document side regulating plates 4 for regulating the width position of the document P are provided on the document tray 3.

In addition, a document supply port 5 is provided near the document tray 3 mounting portion, and the document P supplied from the document supply port 5 is copied in the main body 2 and then exits from the document discharge port 6 at the top of the main body 2. be discharged.

The document P discharged from the discharge port 6 is stacked on the document tray 7 on the upper surface of the main body 2 .

The document tray is provided with a document stopper 8 on the tray 7, which stops the document P by colliding with the leading edge of the discharged document P.

The document stopper 8 can be adjusted to a position corresponding to various document sizes by manually sliding the document holder back and forth on the tray 7 in the document advancing direction.

[Problem to be solved by the invention]

However, in the case of the conventional example, first, the position of the document P in the width direction is regulated using the document side regulating plate 4 of the document tray 3 according to the size of the document P, and then the document tray is moved to the document stopper 8 of the tray 7. Since the leading end stop position of the document was set in accordance with the length direction of the document P, there was a problem in that operability was lacking, such as having to perform document position regulation twice, vertically and horizontally.

Also, after setting the document side regulation Fi4, you may forget to set the position of the document stopper 8, and in such a case, the copied document P may not be placed in the correct position on the document tray 7. Therefore, there is a problem that there is a risk that the manuscript P may be misaligned or damaged.

The present invention aims to solve such problems.

[Means to solve the problem]

In order to achieve the above object, the present invention provides the following automatic document feeder. That is, the present invention provides an automatic document feeder including a document tray having a document side regulating plate and a document tray having a document stopper, wherein the document stopper is moved to a predetermined position in conjunction with the movement of the document side regulating plate. This is an automatic document feeder characterized in that it can be adjusted and set to a certain position.

[For production]

In the above configuration, when the document side regulating plate on the document tray side is manually operated to match the width of the document, the document holder is moved to the tray side and the document stopper is automatically moved to a predetermined position in conjunction with the movement of the document side regulating plate. The position is adjusted and set.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Regarding embodiments of the present invention, how the configuration of the present invention is actually embodied will be described below with reference to the drawings, along with its operation.

FIG. 1 is a perspective explanatory view of one embodiment of the present invention, with a portion cut away to make the interior easier to understand.

In the figure, 1 is a copying machine, and a main body 2 of an automatic document feeder (ADF) is placed on the top of this copying machine.

A document tray 3 is attached to one side of the main body 2, and this document tray 3 has two document side regulating plates 4 and 4.
4 is attached so as to be slidable in the width direction of the document.

Further, there is a supply port 5 for supplying the document into the main body 2 near the attaching/detaching portion of the document tray 3 of the main body 2, and a document discharge port 6 is provided at the top of the main body 2, and a tray 7 is provided to receive the document.
There is.

The original supplied into the main body 2 from the supply port 5 is irradiated with light on a platen (not shown) inside the main body 2 for copying, and then from the ejection port 6 at the top of the main body 2, the original document holder on the upper surface is transferred to the platen. 7 is discharged on top.

This document tray is provided with a document stopper 8 on the tray 7 so that the leading edge of the document discharged from the discharge port 6 comes into contact with the document stopper 8 and the document is positioned, aligned, and stacked.

This document stopper 8 is attached so as to be slidable in the direction in which the document advances so that it can accommodate documents of various sizes.

Further, this document stopper 8 is connected to the document side regulating plate 4 via a rack and binion 9 within the main body 2.

This rack and binion 9 is composed of two large and small integrated binions 9a and 9b, and two racks 9c and 9d corresponding to the binions 9a and 9b.

With this rack and binion 9, when the document side regulating plate 4 is operated to regulate the width direction position of the document, the document stopper 8 follows and can automatically set the stopping position of the leading edge of the document in the traveling direction. be.

The document stopper 8 has a support shaft 8a at its base and a rack 9.
d, and the document holder can be bent in response to opening and closing of the tray 7.

FIG. 2 is an explanatory plan view of the same embodiment, which explains in more detail the relationship between the document side regulating plate 4 of the document tray 3, the side receiver of the main body 2, the document stopper 8 of the tray 7, and the rack and binion 9. It is.

Generally speaking, the ratio of vertical and horizontal lengths of standard-sized manuscripts in Japan is in a relationship of one to f2.

Therefore, the ratio of the amount of movement of the document side regulating plate 4 connected by the rack and pinion 9 to the amount of movement of the document stopper 8 is l to f2, but in reality, the document side regulating plates 4, 4 are Both sides 4, 4 are guided by slits 3a, 3a, and move symmetrically to each other at the same time by a rack and binion (not shown) to regulate the document width, so that the movement of one document side regulating plate 4 is The amount should be half that amount.

That is, in this case, the two integrally formed pinions 9a and 9b of the rack and pinion 9 may have a radius ratio of 1:2f2.

The pinion 9a is the rank 9c on the side of the document side regulating plate 4.
The pinion 9b meshes with the rack 9d of eight document stoppers.

With the above configuration, when the document side regulating plates 4, 4 are moved in the direction of arrow X, the document stopper 8 is also automatically moved in the direction of arrow Y and set at a predetermined position.

Further, when the document side regulating plate 4.4 is moved in the direction opposite to the direction of the arrow X, the document stopper 8 is automatically moved in the direction opposite to the direction of the arrow Y and is set at a predetermined position.

As described above with respect to the embodiments, the present invention has a structure in which the position adjustment of the document stopper is linked to the operation of the document side regulating plate, so that by operating the document side regulating plate, the document stopper is automatically moved to a predetermined position. The position can be adjusted, which makes the operation easier and prevents forgetting to adjust the document stopper, so documents can be stacked in alignment without being damaged.

〔Effect of the invention〕

According to the present invention, since the document stopper is linked to the document side regulating plate, the two operations of aligning the document, that is, adjusting the position of the document side regulating plate and adjusting the position of the document stopper, can be performed in one time. Easier to handle.

In addition, the document stopper is linked to the document side regulation plate.
This has the effect of eliminating the need to forget to set the document stopper, ensuring that documents are always stacked in the correct position, and eliminating the risk of document misalignment or damage.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is an explanatory plan view of the same embodiment, and FIG. 3 is a diagram showing a conventional example. 2... Automatic document feeder main body, 3...
Document tray, 4...Document side regulation plate, 7...Document tray plate, 8...Document stopper. Figure 2

Claims (1)

[Claims] An automatic document feeder including a document tray having a document side regulating plate and a document tray having a document stopper, the document stopper being adjusted to a predetermined position in conjunction with the movement of the document side regulating plate. characterized by
Automatic document feeder.