JPH07191419A - Original holding device for image forming device - Google Patents

Abstract

PURPOSE:To realize the opening and closing action of a pressing member suitable for original size and to facilitate workability and handleability by providing the pressing member with different supporting points to realize the opening and closing action in at least two directions corresponding to the original size, making the opening and closing area thereof on a plane surface by the opening and closing action different and integrally constituting it. CONSTITUTION:A small pressing plate part 2 is pivotally supported by a shaft 4 so as to be freely turned and a roller 5 is supported by the shaft 4 so as to be freely turned. A roller 7 is supported by a shaft 6 supported by a large pressing plate part 1 so as to be freely turned. Then, one-end sides of plural tension springs 8 are fitted to one end 3A of a white-color sheet 3 through a reinforcing plate 11 in order to uniformly pull the sheet 3. The other end sides are hung on the spring hanging part 1A of the plate part 1. The sheet 3 is provided with two different supporting points of a hinge unit 15 for freely opening and closing the sheet 3 by the plate part 1 and the shaft 4 for freely opening and closing the sheet 3 by the plate part 2. Then, the opening and closing directions of the sheet 3 make almost a right angle and the opening and closing area on the surface of a glass plate 18 by the opening and closing action can be changed according to the original size.

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 of an image forming apparatus applied to a reading section for optically reading a document of an image forming apparatus such as a copying machine, a printer and a facsimile.

[0002]

2. Description of the Related Art Conventionally, a document reading apparatus in a well-known image forming apparatus places a document on a glass plate surface arranged at the top of the apparatus body and then mounts it on the back side, as is applied to a copying machine. The document holding device is configured to be pressed and held by the pressing plate.

[0003]

However, the openable document holding device for pressing and holding the document placed on the glass plate surface on the top of the main body of the apparatus has a larger area than the maximum readable document. Was to have. For this,
The operator must open the entire document holding device even when setting a small-sized document.

That is, even when a copying machine having a maximum readable document size of A3 is used, the frequency of use of small size documents such as A4 B5 rather than A3 is easy to read and filing. Despite the large number of documents, I had to open the large document holder for A3 size and set the document.

Further, the document holding device occupies most of the area of the top of the main body of the device. Therefore, when reading a plurality of originals, unused originals are often placed on the original holding means.

However, if the document holding means is opened with the document placed by mistake, the document may be dropped to the back of the main body of the apparatus, damaging an important document or moving the main body for recovery. May be necessary.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a document holding device for an image forming apparatus, which is capable of opening and closing in accordance with the size of a document, improves workability, and is easy to handle in order to solve the above problems. It is in.

[0008]

In order to achieve the above object, the present invention has a pressing member for pressing a placed original, and an original of an image forming apparatus for holding the original by the pressing member. In the holding device, the pressing member has different fulcrums that allow opening and closing in at least two directions depending on the size of the original, and the opening and closing area on the plane due to opening and closing is different
In addition, the document holding device of the image forming apparatus is characterized by being integrally configured.

According to one embodiment of the present invention, a flexible member is provided on at least one end of the pressing member.

According to another embodiment of the present invention, the flexible member is a spring member, and the opening / closing direction of the pressing member is substantially perpendicular.

[0011]

By adopting the document holding device of the image forming apparatus of the present invention, the pressing member has different fulcrums that allow opening and closing in at least two directions depending on the size of the document, and the opening and closing area on the plane by opening and closing. Differently and integrally configured, a flexible member is provided on at least one end of the pressing member, and the flexible member is a spring material, and the opening and closing direction of the pressing member is made substantially right angle to adapt to the document size. The document holding means can be opened and closed, workability is improved, and its handling is easy.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a sectional view of FIG. 1, in which (A) is a closed state and (B) is a partially open state. 1 and 2, a document holding device 30 of the image forming apparatus is mainly configured integrally with a large pressure plate portion 1, a small pressure plate portion 2 and a white sheet 3 which is a pressing member.

The large pressure plate portion 1 is large enough to cover the original placing glass plate 18 arranged on the top of the apparatus main body, and a hinge unit 15 is provided to freely open and close the surface of the glass plate 18. And Further, the small pressure plate portion 2 is rotatably supported by a shaft 4 provided at one end, and
A plurality of rollers 5 are rotatably supported in the.

A plurality of rollers 7 are rotatably supported on the shaft 6 supported by the large pressure plate 1. One end of a plurality of tension springs 8 is attached to one end 3A of the white sheet 3 via a reinforcing plate 11 in order to pull the sheet 3 uniformly, and the other end is a spring hook portion 1A of the large pressure plate portion 1.
Is hung on.

The white sheet 3 passes through the rollers 7 and 5 and has the other end 3B of the sheet fixing portion 2A of the small pressure plate portion 2.
It is fixed with Velcro or double-sided tape (not shown).

An operator can hold the handle portion 1C of the large pressure plate portion 1 and open it from the front side to the upper rear side in FIG. At this time, since the grip portion 2B of the small pressure plate portion 2 overlaps the frame 1B of the large pressure plate portion 1, the small pressure plate portion 2 does not drop downward. Further, in order to open only the small pressure plate portion 2, the operator can hold the grip portion 2B of the small pressure plate portion 2 and open from the left side to the upper right direction (FIG. 2).
(B)).

Since the pulling force of the spring 8 is an appropriate force for removing the slack of the white sheet 3, even if the state shown in FIG. The state can be maintained.

Therefore, according to this embodiment, the white sheet 3
Has two different fulcrums, that is, a hinge unit 15 that can be opened and closed from the front by the large pressure plate portion 1 and an axis 4 that can be opened and closed by the small pressure plate portion 2 from the left side to the upper right direction. The opening and closing direction of the seat 3 becomes substantially right angle, and the opening and closing area on the surface of the glass plate 18 by opening and closing,
It can be changed according to the document size.

Further, the large pressure plate portion 1 is provided with a projection portion 19 so that a sheet material such as a document 20 to be placed can be held.

3A and 3B are sectional views showing another embodiment of the present invention. FIG. 3A shows a fully closed state, FIG. 3B shows a partially opened state, and FIG. 3C shows a semi-opened state. Show. In the figure, the document holding device 40 is integrally configured from a large pressure plate portion 12, two small pressure plate portions 13 and 14 and a white sheet 3 which is a pressing member. Shafts 9 and 17 are provided between the small pressure plate portions 13 and 14 and the large pressure plate portion 12, respectively,
Further, rollers 10 and 16 are rotatably supported.

Therefore, as shown in FIGS. 3 (B) and 3 (C), a plurality of small pressure plate portions 13 and 14 can be opened and closed from the left side to the right side in two steps in this embodiment, and as shown in FIG. Similarly, since the large pressure plate portion 12 can be opened and closed from the front side to the upper rear side by the hinge unit 15, the opening and closing direction of the white sheet 3 is substantially a right angle, and the opening and closing area on the plane by a plurality of opening and closing operations is made according to the document size. Can be changed.

Further, the large pressure plate portion 12 is provided with a projection portion 19 so that a sheet material such as a document 20 to be placed can be held.

FIG. 4 is a perspective view of still another embodiment of the present invention, and FIG. 5 is an enlarged view of a main part of FIG. In FIG. 4 and FIG. 5, the document holding device 50 mainly includes the large pressure plate portion 22.
And a small pressure plate portion 23 and a white sheet 3 which is a pressing member (not shown). One end of the small pressure plate portion 22 is rotatably provided on one end of the large pressure plate portion by the shaft 4, and the small pressure plate portion 23 has a grip portion 23A and opens from the left side to the right direction by the shaft 4. Further, by holding the grip portion 22A of the large pressure plate portion 22, together with the large pressure plate portion 22, the small pressure plate portion 23 can be entirely opened from the front side to the upper rear side in the drawing by the hinge unit 24.

At this time, the small pressure plate portion 23 is provided with the stopper 23B.
This prevents falling down. The large pressure plate portion 22 is provided with a protrusion 25, so that a sheet material such as a document can be held.

The present invention is not limited to the above embodiment, but can be implemented in other modes by making appropriate design changes.

[0027]

As is apparent from the above description, in the document holding device of the image forming apparatus of the present invention, the pressing member has different fulcrums that allow opening and closing in at least two directions, and the document holding device can be opened and closed depending on the document size. The opening and closing area on the plane by opening and closing is selected, and is integrally configured, and at least one end of the pressing member is provided with a spring member that is a flexible member, and the opening and closing direction of the pressing member is substantially right angle. The technical problems are effectively solved, the document holding means adapted to the document size can be opened and closed, the workability is improved, the handling is easy, and the document can be placed on the unopened part. It can be effectively used.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of FIG. 1, in which FIG.
FIG. 3B shows a partially opened state.

3A and 3B are cross-sectional views of another embodiment of the present invention, where FIG. 3A is a fully closed state, FIG. 3B is a partially opened state, and FIG. 3C is a partially opened state. Indicates.

FIG. 4 is a perspective view of yet another embodiment of the present invention.

FIG. 5 is an enlarged view of a main part of FIG.

[Explanation of symbols]

 1,12,22 Large pressure plate part 2,13,14,23 Small pressure plate part 3 White sheet 8 Tension spring 15,24 Hinge unit 30,40,50 Document holding device

Claims (3)

[Claims] 1. A document holding device of an image forming apparatus, comprising a pressing member for pressing a placed document, and holding the document by the pressing member, wherein the pressing member has at least two directions depending on a document size. It has different fulcrums that enable the opening and closing of the
A document holding device for an image forming apparatus, which is integrally configured. 2. The document holding device for an image forming apparatus according to claim 1, wherein a flexible member is provided on at least one end of the pressing member. 3. The document holding apparatus for an image forming apparatus according to claim 2, wherein the flexible member is a spring member, and the opening / closing direction of the pressing member is substantially a right angle.