JP2513141B2 - Document holder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document holding device,
Particularly, the present invention relates to a document holding device suitable for a high resolution type facsimile device and the like.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 3, a document holding apparatus of this type also functions as a lid between the support table 51 which is a case body and a document table 58. An elastic member 57 that holds the transparent plate 53 in parallel is provided on the transparent plate 53 side. Further, a positioning pin 54 for positioning the transparent plate 53 in parallel with the original placing table 58 when the transparent plate 53 is closed at a position where one end of the support table 51 abuts the transparent plate 23.
A magnet 55 for restricting the movement of the transparent plate 53 in the opening direction is provided, and the original 30 is pressed and held by the magnet 55.

[0003]

However, in the above-mentioned conventional example, the original 30 is placed on the original placing table 58, and the transparent plate 53 is closed to press and hold the original 30, so that the original 30 is transparent. for wind pressure generated by the closing <br/> when closing plate 53, it is placed on the document table 58
There is an inconvenience that the document 30 that has been moved moves.

[0004]

An object of the present invention is to improve the inconvenience of the conventional example, and particularly to effectively eliminate the movement of the document due to the wind pressure generated by the opening and closing of the transparent plate, thereby improving the operability of the document holding. The purpose is to provide a device.

[0005]

According to the present invention, a document placing table 8 mounted on the supporting table 1 via a plurality of elastic members 7 and positioning pins 6, and an undulating opening / closing on the outer surface side of the document placing table 8 are provided. It is provided with a plate-shaped transparent body 3 which is freely installed, and a transparent body shaft support portion 2 which fixes the plate-shaped transparent body 3 on the document table 8 so as to be openable and closable.

[0006] Then, the document table 8, the rear surface side is partitioned by a predetermined respective partition plates 14. Further, the document placing table 8 is provided with a plurality of ventilation holes 8a. And
Furthermore, features the back surface side of the document table 8 partitioned by the partition plate 14, an intake mechanism 20 for setting the negative pressure state separately for each space partitioned by the partition plate to the support 1, the document
The range of negative pressure is changed according to the size of . This aims to achieve the above-mentioned object.

[0007]

[Function] A fan unit 11 provided at the bottom of the document table 8,
The on-off valve 12 and the partition plate 14 allow the operator to copy the original 10
By inputting the size of the
The air in the required part of the bottom is sucked out. In particular,
If a large original is placed on the original table 8, all
Air is sucked out from the ventilation holes of the part. On the other hand, a small manuscript
When placed on, air is sucked in only from some ventilation holes.
Will be served. As a result, the upper portion of the document placing table 8 has a negative pressure. Therefore, since the original 10 is attracted to the original placing table 8, the original 10 does not move due to the wind pressure generated by opening and closing the plate-shaped transparent body 3.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the embodiment shown in FIGS. 1 and 2, the support base 1 is provided via a plurality of elastic members 7 and positioning pins 6.
A document placing table 8 mounted on the document placing plate 8, a plate-shaped transparent body 3 provided on the outer surface of the document placing table 8 so as to open and close freely, and the plate-like transparent body 3 can be opened and closed on the document placing table 8. And a transparent body support shaft 2 for supporting the transparent body.

[0009] document table 8, the rear surface side is partitioned by a predetermined respective specifications <br/> cutting plate 14. Further, the document placing table 8 is provided with a plurality of ventilation holes 8a. An intake mechanism section 20 for setting the back side of the document placing table 8 partitioned by the partition plate 14 into a negative pressure state is attached to the support table 1.

The air intake mechanism 20 is provided individually for each space partitioned by the partition plates 14 on the back surface side of the document placing table 8 partitioned by the partition plates 14. Specifically, Hara
If a large manuscript is placed on the draft table 8,
Air is sucked out from the ventilation holes of the. On the other hand, a small manuscript
If placed, it will absorb air only through some ventilation holes.
It is supposed to be served. And this intake mechanism part 2
Reference numeral 0 denotes a fan 11 for discharging the air on the back side of the document placing table 8 to the outside, and a ventilation path 12 provided between a space partitioned by a partition plate 14, and an opening / closing provided in the ventilation path 12. And the valve 13. Among them, in the embodiment shown in FIG. 1, two sets of the intake mechanism parts 20 are equipped so as to share the fan 11.

More specifically, the document holder 8 is
A support base 1 forming the main body of the apparatus, a plate-shaped transparent body 3 rotatably supported at one end of the support base 1 about a transparent body support shaft 2, and a plurality of plates provided on the other end of the support base 1. Box which has a positioning pin 4, a magnet 5 fixed in the vicinity of the positioning pin 4, and a coil-shaped spring 7 at the lower end and which is fixed on the side surface of the support base 1 and moves vertically The original placing table 8 has a shape. As described above, the plate-shaped transparent body 3 is supported by the transparent body support shaft 2 at one end of the support base 1 and can be opened upward. The plate-shaped transparent body 3 is made of a transparent body such as a glass plate, and has good parallelism on both sides so that optical distortion does not occur.

The plurality of positioning pins and the magnet 5 are provided on the other end of the support base 1, whereby the plate-shaped transparent body 3 is provided.
The lower surface of the plate-shaped transparent body 3 when the
At the same time, the plate-shaped transparent body 3 stands still horizontally with respect to the document placing table 8 so that the distance between the plate-shaped transparent body 3 and the document placing table 8 is kept constant. Further, as shown in FIG. 1, the document placing table 8 is supported by pins 6 fixed to both side surfaces of the supporting table 1 and the elastic force of a plurality of coiled springs 7 at the lower end portion is guided by the pins 6. You can move up and down with. Then, the document table 8 are drilled a plurality of vent holes 8a.

As described above, the bottom of the document placing table 8 is
It is divided into a plurality of parts by a partition plate 14, and tubes 12 and 12 are connected from each part to the fan part 11. An on-off valve 13 is provided in the middle of the tube 12. Then, the operator inputs the size of the manuscript 10 from an operation unit (not shown), and the opening / closing valve 13
Is operated to open and close only the required portion, and the air at the bottom of the document placing table 8 of the required portion based on the size of the original 10 can be sucked out.

Next, the operation of this embodiment will be described.

A fan unit 1 provided at the bottom of the document table 8
The operator inputs the size of the original 10 into the operation unit by means of the opening / closing valve 12, the partition plate 14, and the air in a necessary portion of the bottom of the original placing table 8 is sucked out. As a result, the upper part of the document placing table 8 becomes negative pressure. Therefore, manuscript 1
Since 0 is attracted to the document placing table 8, the plate-shaped transparent body 3
The original document 10 does not move due to the wind pressure generated by opening and closing.

The fan unit 11 may be constructed so that the closing of the plate-shaped transparent body 3 is detected by a microswitch or the like, and the fan unit 11 is stopped in conjunction with this. This makes it easy to take out the original 10 from the transparent plate 3.

[0017]

Since the present invention is constructed and functions as described above, according to this, since the upper portion of the document placing table has a negative pressure, the document is securely adsorbed on the document placing table, and accordingly, , It is possible to reliably prevent the original from moving due to the wind pressure generated by opening and closing the plate-shaped transparent body,
As a result, it is possible to provide an original document holding device which is excellent in the conventional art in which the troublesomeness in operation can be eliminated and the operability can be improved.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention.

FIG. 2 is a schematic perspective view of the embodiment shown in FIG.

FIG. 3 is a schematic cross-sectional view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support base 2 Transparent body support shaft 3 Plate-shaped transparent body 6 Positioning pins 8 Original placement table 8a Ventilation hole 10 Original document 11 Fan 12 Tube as a ventilation path 13 On-off valve 14 Partition plate 20 Intake mechanism section

Claims (2)

(57) [Claims] 1. A document placing table mounted on a supporting table through a plurality of elastic members and positioning pins, and a plate-shaped transparent body provided on the outer surface side of the document placing table so as to be capable of opening and closing.
In a document holding device provided with a transparent body fixing means for fixing the plate-shaped transparent body on the document placing table so as to be openable and closable, the back side of the document placing table is partitioned into a plurality of predetermined partition plates and Multiple ventilation holes are provided on the platen, and the back side of the original platen partitioned by the partition plate is divided into
Multiple negative pressure settings are made individually for each space partitioned by ribs.
Equipped with several suction mechanism parts on the support,
It is characterized by changing the range of negative pressure according to
Paper holding device. 2. The back surface of the document placing table, wherein the suction mechanism is
Side with the fan that exhausts the side air to the outside and the partition plate.
The air passage installed between the cut space and this air passage
It is composed of an on-off valve installed in
The document holding device according to claim 1.