JPH065314Y2 - Document feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a document feeder for manually feeding a document to a platen.

[Conventional technology]

The entrance side of the document conveying belt arranged on the platen and the exit side of the document feeding mechanism are continuously connected by a conveyance path equipped with conveyance rollers, and the document fed by the document feeding mechanism is fed along the conveyance path by the document feeding belt. 2. Description of the Related Art There is known an automatic document feeder that conveys a document to the entrance side, conveys the document along a platen with a document conveying belt, and sends the document to the platen for setting.

On the other hand, there is known a semi-automatic document feeder that manually inserts a document up to the entrance side of the document transport belt and feeds it onto the platen by the document transport belt in the same manner as described above.
A document feeding device used in this semi-automatic document feeder is provided with a registration gate and a registration roller, and the document is inserted up to the registration gate with the pinch roller constituting the registration roller being separated from the driving roller, and thereafter. It is known that the pinch roller is pressed against the driving roller and the registration gate is opened so that the registration roller feeds.

[Problems to be solved by the invention]

With such a document feeder, the document must be manually inserted to the registration gate, and the operation is troublesome, and when two documents are inserted side by side, one document is inserted and the registration roller is inserted. Although the other original is inserted after being held by, the pinch roller of the registration roller needs to be separated from the drive roller at this time, and thus the original inserted may be displaced.

Therefore, according to the present invention, a document can be conveyed to the registration gate by inserting a document into the manual feed entrance.
An object of the present invention is to provide a document feeding device which prevents the previously inserted documents from being displaced when the documents are inserted side by side.

[Means and Actions for Solving Problems]

In a document feeder that feeds two documents in parallel to a platen by hand, a feed roller 7 is provided at the entrance side of the transport path 5, a registration gate 9 is provided at the exit side, and a drive roller 11 is provided in the middle. A document feeding device provided with a registration roller 8 composed of a pinch roller 12 and a pinch roller 12, and means for independently controlling the left and right of the pinch roller 12.

Thus, when two originals are inserted side by side, the next original can be inserted while the first inserted original is held by one pinch roller and the driving roller, and the original can be conveyed to the registration gate by the feeding roller. It was done like this.

〔Example〕

As shown in FIG. 1, the original conveying belt 2 is mounted on the platen 1.
And a document feeding device A is provided at the entrance side of the document feeding belt 2, and the document feeding device A is provided with a feeding path 5 including an upper chute 3 and a lower chute 4 for feeding the same. A feeding roller 7 is provided near the entrance 6 for manual feeding of the path 5, a pair of left and right registration rollers 8 is provided in the middle, and a registration gate 9 is provided at the exit side.

The feed roller 7 is connected to a motor (not shown) provided on the upper chute 3 side, and is pressed against the lower chute 4 by a weak force, and the motor of the feed roller 7 is driven by a detection signal of the entrance sensor 10. .

The registration roller 8 comprises a driving roller 11 and a pinch roller 12, which are arranged on both sides of the conveying path 5, and each pinch roller 12 has a leaf spring 13.
While being pressed against the drive roller 11 with a strong force, the solenoid 14 and the link 15 move against the leaf spring 13 to separate from the drive roller 11.

That is, as shown in FIGS. 2 and 3, the link 15 is composed of a horizontal plate 15a and a vertical plate 15b, a shaft 17 is supported between the supporting sides 16 and 16 of the horizontal plate 15a, and a pinch is provided on the shaft 17. The roller 12 is attached, the leaf spring 13 is supported by the shaft 17, the horizontal plate 15a is supported by the support shaft 18 so as to be vertically swingable, and the solenoid 14 is supported by the vertical plate 15b.
The pin 19 provided on the movable portion 14a is engaged, the link 15 for exciting the solenoid 14 swings downward against the leaf spring 13, and the pinch roller 12 is separated by the drive roller 11.

Further, as shown in FIG. 4, a pair of inlet sensors 10 are provided on the left and right, and the feed roller 7 is a motor 7a.
The drive rollers 11 of the pair of registration rollers 8 are driven by the motor 11a, respectively, and the motor 11a, the motor 7a and the solenoid 1 are driven.
As shown in FIG. 5, reference numeral 4 is a detection signal from the entrance sensor 10 and its operation is controlled by the controller 20.

Then, when a document is inserted from one of the left and right sides of the manual feed inlet 6, one of the inlet sensors 10 operates to detect, and one solenoid 14 is excited by the detection signal and one of the registration rollers 8 via the link 15. The pinch roller 12 is rocked against the leaf spring 13 to separate from the drive roller 11, and the motor 7a is driven to feed the feed roller 7
To rotate.

As a result, the original is placed on one of the registration rollers 8
It is fed until it abuts on the registration gate 9 through the through hole, positioned and waits, and when a predetermined time elapses, the solenoid 14 that is excited is demagnetized and the pinch roller 12 swings toward the drive roller 11 side by the leaf spring 13 and pinches. The original is pressed and held by the roller 12 and the driving roller 11.

Next, when a document is inserted from the left and right sides of the manual feed inlet 6, the other inlet sensor 10 performs a detection operation, and the detection signal causes the solenoid 14 of the other registration roller 8 to be excited to cause the pinch roller 12 to move. It swings downward against the leaf spring 13 and separates from the drive roller 11.

As a result, the original is sent to the registration gate 9 by the sending roller 7.

At this time, since the pinch roller 12 of one of the registration rollers 8 is swung upward by the plate spring 13 and holds the original fed earlier, the position does not shift.

Then, when a predetermined time elapses after the fed document is brought into contact with the registration gate 9 and positioned, the solenoid 14 is demagnetized and the pinch roller 12 causes the leaf spring 13 to move.
The original is held by being swung by.

After that, the registration gate 9 is opened at a predetermined timing, and the motor 11a is driven to feed two originals toward the platen 1 by the pair of registration rollers 8 and 8.

Also, when one large-sized document is inserted, the two entrance sensors 10 and 10 detect and operate the left and right solenoids 1.
4 is excited and the left and right pinch rolls 12 are driven by the drive roller 11.
Since they are further separated from each other, they can be conveyed to the registration gate 9 by the feeding roller 7.

[Effect of device]

When two originals are inserted side by side from the left and right sides of the conveyance path 5, the next original can be inserted while the first inserted original is pressed against the driving roller 11 by the left and right pinch rollers 12, so that the first original can be inserted first. The inserted document does not shift.

Further, since the inserted document is conveyed to the registration gate 9 by the feeding roller 7, the document may be manually inserted a little, and the operation is simplified.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a front view, FIG. 2 is a bottom view, and FIG. 3 is a perspective view of a pinch roller operating part.
The figure is a plan view, and FIG. 5 is a control circuit diagram. 5 is a conveying path, 7 is a feed roller, 8 is a registration roller, 9 is a registration gate, 11 is a drive roller, and 12 is a pinch roller.

Claims (1)

[Scope of utility model registration request] 1. A document feeder for feeding two originals in parallel to a platen by hand, a feed roller 7 is provided at the entrance side of a conveyance path 5, and a registration gate 9 is provided at the exit side. A document feeding apparatus characterized in that a registration roller 8 comprising a driving roller 11 and a pinch roller 12 is provided in the middle, and means for independently controlling the right and left of the pinch roller 12 is provided.