JP3205064B2 - Image reading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine, a scanner,
More specifically, the present invention relates to an image reading apparatus with an automatic document feeder provided with a document feed unit and a document feed direction changing unit, such as a facsimile.

[0002]

2. Description of the Related Art As a document conveying means and the document conveying direction changing means conventional automatic document feeder with an image reading apparatus having, for example 5乃those as displayed resides in optimum Figure 6. FIG. 5A is a perspective view of a conventional image reading apparatus.
6B is a side sectional view of a conventional image reading apparatus main body with an automatic document feeder, FIG. 6A is an enlarged explanatory view of a main part of the conventional technology, and FIG. 6B is a main part of another conventional technology. An enlarged explanatory diagram of
FIG. 6C is an enlarged explanatory view of a main part of another conventional technique.
In FIG. 5A, a document rake guide 102 is fixed on a contact glass 101 on which a document is placed.
When image information is read in FIG.
Is fed and conveyed by a paper feed roller 104, and reads image information by a reading unit 105.
The document is scooped up by a document scooping guide 102 mounted on the sheet 1, and then conveyed in the direction of arrow a and discharged. At this time, the document scooping guide 102 is provided with a groove 106 in the contact glass 101 in order to scoop up the document 103. As shown in FIG. 6A, when the guide 102 protrudes above the contact glass 101 without providing a groove, the vertical portion 1 located at the front end of the rake guide 102 of the document
It is difficult to make the height t 07 thinner than the thickness of the document 103. Therefore, the original 103 is the rake guide 1 of the original.
There was an inconvenience of being caught on the vertical portion 107 of the second.

[0003] Therefore, as shown in FIG.
In order to prevent 03 from being caught, a groove 106 for burying and fixing the document rake guide 102 is provided in the contact glass 101. Also, as shown in FIG. 6C, the document rake guide 1 on the contact glass 101
6 is provided on the contact glass 101 so as to be in contact with the front end edge of the transparent glass 108 so as to reach the reading unit 105.
Some have a configuration substantially similar to that of FIG. In the above-described conventional image reading apparatus, it is difficult to make the height of the vertical portion 107 of the document rake guide 102 thinner than the thickness of the document, and the document rake guide is provided on the contact glass in order to prevent the document from being caught. In an image reading apparatus provided with a groove for attaching and fixing the contact glass, not only the processing cost of providing the groove for fixing to the contact glass causes an increase in cost, but also the provision of the groove for forming the contact glass. Weakens,
There is a problem that the contact glass is broken at the groove. Further, in the conventional example of FIG. 6 (c), transparent
Insufficient light quantity at the time of reading by the plate 108 occurs, causing a problem that the read image is degraded or the apparatus is enlarged.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and can maintain the strength of a contact glass without providing a groove in the contact glass or overlapping a transparent plate.
It is an object of the present invention to provide an image reading apparatus with an automatic document feeder which is inexpensive, has no deterioration in the read image, has a compact apparatus, and can reliably scoop up a document.

[0005]

To achieve the above object, according to the Invention The present application first invention comprises a document feeder, the image reading apparatus with an automatic document feeder having a document conveying direction changing means, the document The means for changing the conveyance direction is a
Place the original conveyed by the feeding means on the contact glass.
Immediately after the reading section in the transport direction and on the contact glass
A scooping member formed by curing a fluid or adhesive
And changes the conveying direction of the document by. According to a second aspect of the present invention, there is provided an image reading apparatus with an automatic document feeder provided with a document feeder and a document feeder direction changing means, wherein the document feeder direction changing means comprises:
Place the original conveyed by the conveying means on the contact glass.
The contact glass immediately after the reading direction of the reading section
A scooping part formed by curing a fluid or adhesive on the top
Material and a rake guide continuously provided behind the scooping member
Thus, the conveyance direction of the document is changed .

The third invention of the present application is directed to the second invention of the present application.
The scooping member in a direction perpendicular to the original transport direction.
Set up a fixed space and place a rake guide
A projection at the front edge of the projection, and projecting the projection into the space.
It is characterized by being put out .

[0007]

In the image reading apparatus constructed as described above, the pick-up member uses a small amount of fluid or adhesive to contact the contact.
It is hardened on a lath.
The tip of the lifting member is almost flat with the contact glass
The transfer direction can be changed when the transfer paper is
Scoop up the document without getting caught on the lifting member
Can be In addition, by combination with the rake guide,
Furthermore, the original can be picked up and the transport direction can be changed.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1A is a perspective view of an image reading apparatus showing one embodiment of the present invention, FIG. 1B is a plan view of a main part of the image reading apparatus showing an embodiment of the present invention, and FIG. AA in FIG. 1 (b)
FIG. 2B is an enlarged view of a section taken along line BB of FIG. 1B. As shown in FIG. 1 (a), a scooping member 2 for a document, which is formed by applying or adhering a fluid or an adhesive and hardening, is provided on a contact glass 1.
A rake guide 4 is provided at the rear of the rake guide. By the cooperation of the scooping member 2 and the rake guide 4, the conveying direction of the document 3 can be changed obliquely upward from a direction parallel to the contact glass.

As shown in FIGS. 1 (b), 2 (a) and 2 (b), an epoxy paint is applied and cured immediately after the reading section 5 on the contact glass 1 is conveyed. A scoop-up member 2 is provided. The above scooping member 2
A rake guide 4 made of resin or the like is fixed and attached to the rear side with a double-sided adhesive tape 9. A scooping member 2 formed by applying and curing this epoxy paint.
Is thicker than the thickness of the skirt end 8 of the rake guide 4 (T> T ′). The scooping member 2 is provided with a plurality of spaces 6 provided in a direction orthogonal to the document conveying direction as shown in the drawing, and a plurality of protrusions 7 protruding from the front edge of the rake guide 4 are arranged in each of the spaces 6. I have. The thickness of the leading end 10 of the scooping member 2 is thinner than the thickness t of the document 3, and the document 3 is scooped once at the leading end 10 of the scooping member 2, Ride Guide 4 The reason why the tip 10 can be made thinner in this way is that the scooping member 2 is configured by curing the applied resin paint.

FIG. 3 is a plan view of a main part of an image reading apparatus showing another embodiment of the present invention. In FIG. 3, a scooping member 2 projects a very small amount of fluid or adhesive as shown in FIG. It is characterized by a configuration in which it is applied or adhered in a dot form during 7 and cured. Therefore, the material cost is low, which is convenient. The scooping member 2 of this embodiment also has an advantage that the document conveyance direction can be changed smoothly, similarly to the above embodiment.

FIGS. 4 (a) and 4 (b) are a plan view and a CC sectional view of another embodiment of the present invention.
An original scooping guide 4 is fixedly attached to the top with a double-sided adhesive tape 9, and a scooping member 2 coated with an epoxy-based paint is provided so as to overlap an end 11 of the scooping guide 4. Then, it is scooped up by the scooping member 2 coated with the epoxy-based paint, guided to the scooping guide 4, and smoothly conveyed in the discharge direction.

The scooping member 2 coated with the epoxy-based paint has a tip portion 10 having a thickness smaller than the thickness of the document 3,
If the relationship of T> T 'is maintained, the thickness of the apex may be a paint, an adhesive, or a resin of another material, and is not limited to the above, and may be either inorganic or organic.
In the above embodiment, the scooping member 2 partially overlaps with the end portion 11 of the rake guide 4, but may overlap with the entire length of the end portion 11 of the rake guide 4.

[0013]

As described above, according to the present invention, the scooping member 2 is used to apply a small amount of fluid or adhesive to the contact glass.
It is hardened on the
The tip 10 of the material 2 is flat with respect to the contact glass 1
Since the transport direction can be changed in a close state,
Rake the original 3 without getting caught on the lifting member
Can be raised. In addition, a small amount of the scooping member 2
Curing the fluid or adhesive on the contact glass
It is not necessary to provide grooves in the contact glass or stack transparent plates, so that the strength of the contact glass is maintained, work steps are omitted, and costs are reduced.
And eliminate the deterioration of the read image, and make the device compact.
be able to. In addition, by using together with the rake guide 4,
Furthermore, the original can be picked up and the transport direction can be changed.

[Brief description of the drawings]

FIGS. 1A and 1B are a perspective view and a plan view of a main part of an image reading apparatus according to an embodiment of the present invention.

FIGS. 2 (a) and (b) are an enlarged view of an AA section and an enlarged view of a BB section of FIG. 1 (b).

FIG. 3 is a plan view of a main part of an image reading apparatus according to another embodiment of the present invention.

FIGS. 4A and 4B are a plan view and an enlarged cross-sectional view taken along line CC of a main part of an image reading apparatus according to another embodiment of the present invention.

5A and 5B are a perspective view of a conventional image reading apparatus and a side sectional view of a conventional image reading apparatus main body with an automatic document feeder.

FIGS. 6 (a), (b) and (c) are an enlarged explanatory view of a main part of the prior art, an enlarged explanatory view of another main part of the prior art, and an enlarged explanatory view of another main part of the prior art. .

[Explanation of symbols]

1 contact glass, 2 rake members, 3
..Documents, 4 ... Rake guide, 5 ... Reading unit, 6
... space, 7 ... projection, 8 ... hem end, 9 ...
Double-sided adhesive tape, 10 ... tip, 11 ... end, 1
01: contact glass, 102: rake guide, 103: original, 104: paper feed roller, 10
5: reading unit, 106: groove, 107: vertical part, 108: transparent plate.

Claims (3)

(57) [Claims] 1. An image reading apparatus provided with an automatic document feeder , comprising: a document feeder; and a document feeder.
Of the original conveyed by the scanner on the contact glass
Flow on the contact glass immediately after the
By a scoop member made by curing the moving body or adhesive
An image reading apparatus, wherein a direction in which the document is transported is changed. 2. An image reading apparatus with an automatic document feeder comprising a document feeder and a document feeder direction changing means, wherein the document feeder direction changing means is the document feeder.
Of the original conveyed by the scanner on the contact glass
Flow on the contact glass immediately after the
A scoop-up member obtained by curing a moving body or an adhesive;
With a rake guide connected to the rear of the rake member
An image reading apparatus, wherein a direction in which the document is transported is changed . 3. The apparatus according to claim 1, wherein the scooping member is moved in a direction perpendicular to the original conveying direction.
With a predetermined space in the direction of the line
A projection provided on a front edge of the rake guide;
3. The image reading apparatus according to claim 2, wherein the image is projected into the space .