JPS6123056A - Positioning apparatus for original in automatic original feeding apparatus in copying machine - Google Patents

Abstract

PURPOSE:To permit the desirable feed of an original by the simple constitution by vertically moving a positioning member urged upwardly by a projection, interlocked with the opening and closing operation of an automatic original feeding apparatus. CONSTITUTION:When an automatic original feeding apparatus 1 is put into closed state, a projection 14 installed onto a cover 9 pushes a positioning member 10, and the contact part 10b retreats below the surface of a pleten glass 3. Therefore, the transport of an original is not obstructed, and the original can be transported desirably. While, with the automatic original feeding apparatus 1 in the opened state, the positioning member 10 is urged upwardly, and the contact part 10b projects over the surface of the platen glass 3. Therefore, an operator can correctly load the original (a) in the contact state to the side edge part 10b at a prescribed position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a positioning device for positioning a document on a platen glass in an automatic document feeder of a copying machine.

[Conventional technology]

FIG. 6 shows an example of a conventional automatic document feeder.

In the figure, (21) is an automatic document feeder disposed at the top of the main body of the copying machine, and has a belt (23) therein for conveying the document onto a platen glass (22). On both sides of this belt (23), there is a feed roller (25) that transports the original placed on the original sending tray (24) to the original biting position of the belt (23), and a feeding roller (25) that transports the original placed on the original sending tray (24) to the original catching position of the belt (23), and a feeding roller (25) that transports the original placed on the original sending tray (24) and ejects the original onto the output tray (26). A discharge roller (27) is provided. A document detection sensor (not shown) is disposed inside the automatic MtJlfi feeder (21), and when the sensor detects the passage of the leading and trailing edges of the document, a bell is detected.
(23), thereby transporting the original to a predetermined position on the platen glass (22).

By the way, the automatic document feeder (21) has a structure that can be opened and closed with respect to the main body of the copying machine, and when the automatic document feeder (21) is opened, the operator manually transfers the document to the platen glass ( 22). In this case, in order to align the original, an alignment member (
28), and the document is aligned by bringing the side edge of the document into contact with this.

However, in such a structure, the automatic document feeder (21
) is closed and the original is transferred using the same feeding device, the positioning member (28) protrudes from the surface of the platen glass (22), which obstructs the movement of the original. arise. Therefore, the automatic document feeder (21
) is not used, a device is required to hold the alignment member (28) below the surface of the platen glass (22) using, for example, a solenoid.
There is a problem that the device becomes complicated and expensive.

In addition, as shown in FIG. 7, a positioning section 4s (2B) is provided on the input side of the original, and the height of the positioning member (2nd) and the document delivery tray (24) are configured to be the same. Therefore, there is a structure in which the alignment member (28) does not interfere with the movement of the document and allows the document to be transferred onto the platen glass (22) without any trouble.

[Problem that the invention seeks to solve]

In such a structure, when using the automatic document feeder (21), the document is transported until the trailing edge of the document passes the alignment member (28), and then the document feeder (23) is reversed. Since it is necessary to transport the original back to a predetermined position, there are problems in that it takes a long time to feed the original and the control device that controls the operation of the heald (23) becomes complicated.

The present invention provides an automatic document feeder for a copying machine in which a positioning member for document positioning has a simple structure, can be raised and lowered without using any complicated control device, and can be manufactured at low cost. The object of the present invention is to provide an alignment device for an apparatus.

[Means and effects for solving the problem] The present invention provides an alignment member having an abutting portion that is biased to protrude above the surface of the platen glass on the document discharge side of the platen glass. When the automatic document feeder is opened, the document is aligned by bringing the side edge of the document into contact with the abutting portion, and when the automatic document feeder is closed, the document is aligned. By providing a holder that pushes the mating member, the abutting portion is retracted below the surface of the platen glass, thereby preventing any hindrance to the movement of the original when using the automatic document feeder. , and the structure is simple.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings. FIG. 1 is a side view showing the configuration of an embodiment of the present invention.

In Fig. 1, +11 is an automatic document feeder located at the top of the copying machine body, which automatically transfers the document placed on the output tray (2) from the document insertion slot to the platen glass (3).
) to the specified position. The automatic document feeder +11 has an internal belt (4) for conveying the document in contact with the surface of the platen glass (3), and the belt (4) is connected to a pair of driving rollers T51. The document is transported as described above by the +51 rotation. The document inserted from the output tray (2) is placed on the document input side of the heddle (4) by the belt (
A feed roller (6) is disposed to transport the document to the biting position of 4), and a discharge roller (8) is provided on the document discharge side to convey the document discharged from the belt (4) to the discharge tray (7).
has been set up. The passage of the document is detected by a document detection sensor (not shown) provided inside the automatic document feeder (1), and the document is transported by controlling the operation of the drive roller (5) based on the detection signal. It is meant to be controlled. Note that (9) in the figure indicates a cover.

An alignment member (101) for aligning the original is provided on the document ejection side of the platen glass (3). As shown in FIG. 2, this alignment member QOI is a flat plate made of synthetic resin or metal. One example has a structure in which the cross section is formed into a circular shape to form the attachment part (LOA), and the other side is bent downward at a substantially right angle to form the contact part (10b'). ) with both ends attached to the fuselage (
1]), thereby configuring the alignment member (101) to rotate about the shaft (11), and a spring (12) is attached to the shaft (11), and the spring (12) Aligning member θO by spring pressure
) is biased upward. Further, a protrusion (IOC) is formed at the rear of the alignment member (10), and the protrusion (IOC)
A stone bar (13) is provided below the protrusion (IOc) when the alignment member QO) is urged upward.
C) is engaged with the stopper (13), thereby regulating the upward rotation angle of the contact portion (10b'I).In this case, the contact portion (10b) is connected to the platen glass ( It is desirable to set it so that it protrudes 1 to 31 m above the surface of 3).

As shown in Fig. 3, the automatic document feeder (11) is provided at the top of the copying machine body so that it can be opened and closed with one side as a fulcrum.When using the automatic document feeder (1), the feeder fl ) is closed, the document placed on the delivery tray (2) is automatically transferred onto the platen glass (3). Furthermore, by opening the automatic document feeder t1+, the operator can manually place the document on the platen glass (3). When the automatic document feeder (1) is open, the alignment member aθ) is urged upward as described above,
As a result, the contact portion (10b) is connected to the platen glass (3).
), as shown in FIG.
The platen glass (3) can be placed in a predetermined position accurately.

On the other hand, when the automatic document feeder (11) is closed, the cover (9) is provided with a protrusion (14) as shown in FIG. The alignment member α is pushed to the position of the contact portion (10
b) is retracted below the surface of the platen glass (3). Therefore, automatic document feeder +11
When using the alignment member QOI, the abutment part (1
0b) is located below the surface of the platen glass (3), the traveling of the original is not obstructed and the original can be transported well. Note that this alignment member QOI can be used as a discharge chute during automatic feeding.

In addition, since the positioning unit 4JQO+ is configured to automatically move up and down in conjunction with the opening/closing operation of the automatic document feeder (1) using a spring (12), a stopper (13), and a protrusion (14), It can have a simple structure without using special equipment, and can be manufactured at low cost.

〔Effect of the invention〕

As explained above, according to the present invention, the document alignment member is biased upward so that the abutting portion of the document protrudes from the surface of the platen glass when the automatic document feeder is opened; The automatic document feeder is provided with a protrusion that pushes the alignment member when the device is closed, so that the abutting portion is retracted below the surface of the platen glass, thereby eliminating any defects in the automatic document feeder. When in use, the operator can manually align the document by touching it to the abutting section, and when using the automatic document feeder, the abutting section does not interfere with the document's movement, allowing the document to be transferred smoothly. can do.

In addition, since the positioning member urged upward by the protrusion is moved up and down in conjunction with the opening/closing operation of the automatic document feeder, the structure can be simplified without using any special equipment. Moreover, it has the advantage that it can be manufactured at low cost.

[Brief explanation of the drawing]

Fig. 1 is a side view of an embodiment of the present invention, Fig. 2 is a perspective view of the alignment member, Fig. 3 is a perspective view showing the automatic document feeder in an open state, and Fig. 4 is a perspective view of the alignment member. FIG. 5 is a side view of the main parts of the automatic document feeder showing the closed state, and FIG. 6.7 is a side view of the conventional automatic document feeder. (1): Automatic document feeder (2): Output tray (3)
Nibraten glass (4): Belt (5): Drive roller (6): Feed port-ra (7): Ejection tray
(8): Discharge roller (9); Cover α
ψ: Alignment member (10a): Mounting part (10b)
n Contact part (IOC): Projection part (11): Shaft (
12), Nispring (13): Strike
Horn (14): Protrusion

Claims (1)

[Claims] 1. In an automatic document feeder, which is provided on the top of the copying machine body so that it can be opened and closed with one side as a fulcrum, and which automatically transports the document from the document insertion slot to a predetermined position on the platen glass, the document discharge side of the platen glass is One side of a flat alignment member is rotatably attached to the machine body, and the other side of the alignment member is provided with abutment for bringing a side edge of the document into contact with the end surface of the platen glass. A spring is provided at the attachment portion of the alignment member to the machine body for biasing the contact portion to protrude above the surface of the platen glass when the automatic document feeder is opened; In the automatic document feeder, the alignment member is pushed when the device is closed;
A document alignment device in an automatic document feeder of a copying machine, further comprising a projection for retracting the contact portion below the surface of the platen glass.