JP2559788Y2 - Document loading 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 document mounting device for mounting a document on an image input drum of an image scanning device.

[0002]

2. Description of the Related Art An image scanning apparatus is an apparatus for picking up an image signal by attaching an original to a transparent image input drum made of resin, glass, or the like, and rotating the image input drum to scan the original. It is. Normally, to attach / detach an original to / from the image input drum, manually attach the original to the outer peripheral surface of the image input drum using adhesive tape, and then remove the adhesive tape when removing the original. Had done more. However, it is difficult to completely attach the original to the image input drum in close contact, and in many cases, partial adhesion failure occurs, and this poor adhesion has caused Newton rings. In general, when the size of the original is large, the Newton ring appears large enough to be easily found by the operator, and can be mounted on the image input drum again. If it is small, even if Newton's ring occurs, it cannot be easily found, and the image signal is often read as it is. That is, it is difficult to avoid the occurrence of Newton's rings especially in the case of a small-sized document. In order to solve such a problem, there is known a technique in which stone powder (fine talc powder) is sprayed in advance on the surface of a document that comes into contact with an image input drum to prevent the occurrence of Newton rings. Also,
No. 26361 describes a technique for preventing the occurrence of Newton rings by using an image input drum having a window portion opened.

[0003]

However, the technique of spraying stone powder has a problem that it requires manual skill, and the technique described in Japanese Utility Model Publication No. 59-26361 discloses a technique for mounting an original. Since the possible position is limited to the window of the image input drum, there is a problem that the document cannot be mounted at a predetermined angle.

In order to improve the image quality and perform predetermined data processing, the original is adhered to a predetermined reference position along the axial direction of the original input drum or at a predetermined angle with a tape or the like. If the document cannot be placed at a predetermined angle, the document must be loaded again while preventing the Newton ring from occurring, which is a problem that the work is troublesome. Was.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, in which an original can be mounted irrespective of the position of an image input drum, and Newton rings do not occur.
It is another object of the present invention to provide a document mounting apparatus capable of mounting a document at a predetermined angle by a simple operation.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to a document mounting device for mounting a document on an image input drum of an image scanning device. A supporting sheet portion formed and having a circular opening; and a disk-shaped holder portion rotatably fitted and held in the opening, wherein the disk-shaped holder portion has a flexible sheet shape. A lower holder portion formed of a member and having an original reading opening; and a flexible sheet-like member having substantially the same shape as the lower holder portion, and one end of the lower holder portion An upper holder fixed to the edge and holding the document between the lower holder and the lower holder.

[0007]

In order to mount a document on the image input drum using the document mounting apparatus of the present invention, first, the document is sandwiched between the lower holder and the upper holder in the disk-shaped holder.
At this time, the document is set so that the reading range of the document corresponds to the reading openings formed in both holder portions. The disc-shaped holder holding the document is fitted and held in the opening of the supporting sheet, and is mounted on the outer peripheral surface of the image input drum. In this case, since the supporting sheet portion and the disk-shaped holder portion are formed from a flexible sheet-shaped member,
These are bent and closely attached to the outer peripheral surface of the image input drum. In this state, the original is read through the reading openings of both holders by scanning the image scanning device. In the reading scan, between the image input drum and the document,
The lower holder part is interposed, and the thickness of the lower holder part is a predetermined thickness that is larger than the distance at which the generation of Newton rings occurs. Therefore, an image signal obtained from the document is a signal representing a high-quality image that does not include Newton rings.

The disc-shaped holder is rotatably fitted and held in an opening of the supporting sheet. Therefore, even after the original mounting device is mounted on the image input drum, the disc-shaped holder is rotated with respect to the supporting sheet so that the document is scanned at a predetermined angle when read by the image scanning device. Matching is possible. Therefore, performing the angle adjustment of the document does not require a troublesome operation such as reattaching the document to the image input drum, and the angle adjustment of the document is easy.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the structure and operation of the present invention described above, a preferred embodiment of the present invention will be described below.

FIG. 1 is a perspective view showing a state in which a document mounting device 10E according to a first embodiment, which holds a document 3, is mounted on an image input drum 1 with an adhesive tape 5. FIG. The image input drum 1 is a thin cylinder made of a transparent material such as glass. A light source (not shown) is disposed inside the image input drum 1, and a light receiving element (not shown) is disposed outside the image input drum 1. The original 3 is read by being transmitted through the original 3 and received by the light receiving element.

As shown in FIGS. 2 to 4, the document mounting apparatus 10E includes a supporting sheet portion 100 and a disk-shaped holder portion 150. The supporting sheet portion 100
Lower supporting sheet portion 110 and supporting middle sheet portion 12
0, support upper sheet portion 130, and transparent film portion 1
40, one end of the sheet portion and the film portion is a fixed end 101 integrally fixed by thermocompression bonding or bonding, and the other end is an open end 111, 121, respectively. , 131, 141.

The supporting lower sheet portion 110, the supporting middle sheet portion 120 and the supporting upper sheet portion 130 are formed with a supporting lower layer opening 113, a supporting middle layer opening 123 and a supporting upper layer opening 133, respectively. As shown in FIG. 3, the lower support opening 113 and the upper support opening 133 are circular with the same inside diameter (R1 = 170 mm), and the middle support opening 123 is slightly larger than the inside diameter R1 (see FIG. 3). R2 = 180 mm).

Accordingly, when the sheet portions are stacked, the supporting sheet portion 100 is provided with these openings 11.
Due to the difference between the inner diameters R1 and R2 of the openings 133 and 133 and between the supporting lower sheet portion 110 and the supporting upper sheet portion 130 and the outer peripheral edge of the supporting middle sheet portion 120, An annular holder 105 for rotatably holding the holder 150 is provided. Also,
The transparent film portion 140 is a sheet-like member having no opening or the like, that is, has a shape that covers the entire supporting upper sheet portion 130. The lower supporting sheet portion 110, the middle supporting sheet portion 120, and the upper supporting sheet portion 130 are
The transparent film portion 140 is a square of 20 mm × 220 mm, and one side of the transparent film portion 140 is the same as the supporting upper sheet portion 130.
0 mm, the other side is 10 m from the supporting upper layer sheet part 130
It is a rectangle 230 m long.

On the other hand, the disk-shaped holder part 150 includes a disk-shaped lower holder part 160, a disk-shaped middle holder part 170, and a disk-shaped upper holder part 180. The disc-shaped lower holder 160, the disc-shaped middle holder 170, and the disc-shaped upper holder 180 are formed by forming a flexible sheet member into a disc shape, and one end edge thereof is heated. The fixed end 151 is integrally fixed by crimping or bonding, and the other end is an open end 161, 171, 181.

The disk-shaped lower holder portion 160 and the disk-shaped upper holder portion 180 have the same outer diameter (r1 = 169 mm), and have the lower support opening 113 and the upper support opening 13.
3, the outer diameter r2 of the disc-shaped middle holder 170 is 179 mm, and is smaller than the inner diameter R2 of the support middle layer opening 123. As described above, since the disk-shaped middle holder portion 170 is formed to have a larger diameter than the disk-shaped lower holder portion 160 and the disk-shaped upper holder portion 180 and is laminated concentrically, the disk-shaped holder The part 150 is a disc-shaped lower holder part 16.
An annular protruding portion 153 protruding from the outer periphery of the disc-shaped middle holder portion 170 from between the 0 and the disc-shaped upper holder portion 180 is provided. Also, the disc-shaped upper holder portion 180
Is formed to be bendable at a bending portion 184.

In the disk-shaped holder part 150, the disk-shaped lower holder part 160 and the disk-shaped upper holder part 180
The reading openings 163 and 183, which are slightly larger than the reading range 3a of the original 3, have a vertical a1 (98 mm) × a horizontal b1 (1
23mm), respectively.
A reading opening 173 is formed in the disc-shaped middle holder 170 in a shape of vertical a2 (102 mm) × horizontal b2 (127 mm). Therefore, the disk-shaped holder 150
Indicates that the reading opening 1 is
63, 183, 173, the reading opening 17 of the disc-shaped middle holder 170 is located between the disc-shaped lower holder 160 and the disc-shaped upper holder 180.
3 is provided with a document holding unit 155 for holding the document 3.

The flexible sheet member forming the supporting sheet portion 100 and the disk-shaped holder portion 150 is made of, for example, polyethylene terephthalate (PET), polyester, etc. in consideration of strength and flexibility. It is desirable to use the above material. The thicknesses of the sheet portion, the film portion and the holder portion are all 0.17 mm.

As shown in FIG. 1, an outer peripheral surface of the image input drum 1 has a fixed end 10
A reference line RF1 is formed in the same direction as the drum axis direction in order to align with the reference end surface RF2.

Next, the image input drum 1 of the image scanning device
The procedure for reading the original 3 with the original 3 attached thereto will be described. First, as shown in FIG.
Reference end face RF2 of image input drum 1 to reference line RF1.
The fixed end 101 of the supporting sheet portion 100 is adhered to the outer peripheral surface of the image input drum 1 using an adhesive tape 5c.

Next, while the lower supporting sheet portion 110 is brought into close contact with the outer peripheral surface of the image input drum 1 and the supporting middle sheet portion 120 is slid with respect to the supporting lower sheet portion 110, the image input drum 1, and the open end 121 of the supporting middle sheet portion 120 is attached to the image input drum 1 using the adhesive tape 5 d. As a result, the supporting lower sheet portion 110 and the supporting middle sheet portion 120 are closely attached to the image input drum 1 in a stacked state.

On the other hand, the disk-shaped upper holder portion 180 is lifted with respect to the disk-shaped middle holder portion 170 by using the disk-shaped holder portion 150 separated from the supporting sheet portion 100, and the disk-shaped upper holder portion 180 is lifted. The document 3 is held in a document holding section 155 formed by the reading openings 163 and 173 of the lower holder section 160 and the disc-shaped middle holder section 170. After that, the disc-shaped upper holder 180 is stacked on the disc-shaped middle holder 170, and the original 3 is held in the disc-shaped holder 150.

Next, the disk-shaped holder 1 holding the original 3
An operation of holding the supporting sheet 50 on the supporting sheet portion 100 is performed. That is, the support upper sheet portion 130 of the support sheet portion 100 is lifted, and the disc-shaped holder portion 150 is positioned and fitted to the annular holding portion 105. Then, as shown in FIG. 6, the supporting upper sheet portion 130 is wound around the image input drum 1 and laminated on the supporting middle sheet portion 120, and the open end 131 of the supporting upper sheet portion 130 is further removed. Adhere with adhesive tape 5e. As a result, the annular projection 153 of the disc-shaped holder 150 is held by the annular holder 105 of the supporting sheet 100, and in this state,
The disc-shaped holder 150 is held rotatably with respect to the supporting sheet 100.

Next, a turning force is applied to the disc-shaped holder 150 to move the disc-shaped holder 150 into the supporting sheet 100.
The document 3 is adjusted to a predetermined angle while being rotated with respect to. At this time, the pointer display DR provided on the upper surface of the disk-shaped holder 150 and the scale MR provided on the outer periphery of the reading opening 183.
The angle of the disc-shaped holder 150 is adjusted while visually confirming the above. At this time, since the disk-shaped holder portion 150 is formed from a flexible sheet member, the image input drum 1
It can be easily rotated while bending upward. In a state where the document 3 is set at a predetermined reference position, the transparent film section 140 is moved to the supporting sheet section 100 and the disc-shaped holder section 1.
50, and the open end 141 of the transparent film portion 140 is adhered to the outer peripheral surface of the image input drum 1 with an adhesive tape 5f. Thus, the original 3 is mounted on the outer peripheral surface of the image input drum 1. In this state, the original 3 is read through the reading openings 163, 173, and 183 of the disc-shaped holder 150 by scanning the image scanning device.

In such a reading scan, the disc-shaped lower holder 160 of the disc-shaped holder 150 is interposed between the image input drum 1 and the document 3. The thickness of the disc-shaped lower holder 160 is 0.1 mm or more, and the distance between the document 3 and the image input drum 1 is larger than the distance that easily causes Newton rings, so that the generation of Newton rings is prevented. it can. Therefore, the image signal obtained from the document 3 is a signal representing a high-quality image that does not include Newton rings.

When the original 3 is mounted on the image input drum 1, the supporting sheet portion 100 is attached to the image input drum 1, and then the original is placed on the disk-shaped holder portion 150. 3 is carried out, and the work of attaching the disk-shaped holder 150 to the supporting sheet 100 is performed. Such an operation does not require skill, unlike the technique of spraying stone powder as described in the related art, and the original 3 can be easily mounted on the image input drum 1.

Moreover, the disk-shaped holder 150 holding the document 3 is rotatable with respect to the supporting sheet 100 even when it is mounted on the image input drum 1. Therefore, even after the disk-shaped holder 150 is mounted on the image input drum 1, the disk-shaped holder 15
The document 3 is rotated by rotating only the document 0 independently.
At a predetermined angle. As a result, since the mounting angle of the original 3 can be easily corrected, the mounting operation of the original 3 is simplified.

Further, in the disk-shaped holder portion 150, one end edge of each holder portion is a fixed end 151, and the other end edge is an open end 1
61, 171, and 181. Therefore, when the disc-shaped holder 150 is mounted on the outer peripheral surface of the image input drum 1, the open ends 161, 171, and 181 are not closed, so that the disc-shaped lower holder 160, the disc-shaped lower The middle holder portion 170 and the disk-shaped upper holder portion 180 slightly slide in the circumferential direction with respect to each other, and the original 3 is tightly held between the disk-shaped lower holder portion 160 and the disk-shaped upper holder portion 180. Can be. Therefore, the original 3 does not undulate.

Also, in the supporting sheet portion 100,
As in the case of the disk-shaped holder part 150, one end of each sheet part becomes the fixed end 101, and the other end becomes the open ends 161 and 171,
181 and the respective seat portions slightly slide in the circumferential direction with respect to each other. Therefore, the supporting sheet portion 100 does not exert a force on the disc-shaped holder portion 150 to cause the original 3 to undulate.

Further, since the supporting sheet portion 100 and the disk-shaped holder portion 150 are formed of hard plastic and have a firm frame, they are convenient to carry, and are affixed because they are hardly deformed. Excellent workability.

Further, the supporting sheet portions 100 are provided with supporting lower layer openings 113, 123, and 133, respectively.
Is provided, the width of the open ends 111, 121, 131 is narrowed and the strength is weakened. Therefore, when the supporting sheet portion 100 is attached to the image input drum 1 with the adhesive tape 5, the open end 11 of the supporting sheet portion 100
Since the forces are concentrated on the portions 1, 121, 131, the portions near the ends of the open ends 111, 121, 131 are easily damaged. However, in this embodiment, the supporting sheet portion 100
Is provided with a transparent film portion 140 laminated on the supporting upper sheet portion 130. The transparent film portion 140 presses and reinforces the supporting upper sheet portion 130 and the like. , 12
1,131 does not break during handling work.

Note that, as shown in FIG.
OE raises the open end 141 of the transparent film part 140 and further bends and lifts the disk-shaped upper holder part 180 of the disk-shaped holder part 150 at the bending part 184 to attach the original to the document holding part 155. It becomes possible to do. Therefore, when exchanging the original 3, the adhesive tape 5f is peeled off, and the open end 141 of the transparent film portion 140 is removed.
If the open end 181 of the disc-shaped upper holder portion 180 is lifted, the original 3 can be set on the original holding portion 155. Therefore, the supporting sheet portion 100 is mounted on the image input drum 1 while the supporting sheet portion 100 is mounted on the image input drum 1. The document 3 can be replaced, and the work becomes easy.

Next, a second embodiment will be described with reference to a cross-sectional view shown in FIG. 7, an exploded perspective view shown in FIG. 8, and a perspective view of main parts shown in FIG. The document mounting apparatus 10F according to the second embodiment increases the strength by slightly increasing the thickness of each of the sheet portions of the supporting sheet portion 100A and the respective holder portions of the disk-shaped holder portion 150A, and makes the sheet portion easily bendable for image input. This is an example in which adhesion to the outer peripheral surface of the drum 1 is further improved.

First, the supporting upper sheet portion 130A of the supporting sheet portion 100A will be described. As shown in FIG. 9, the supporting upper sheet portion 130 </ b> A
32A, and a sheet piece layer 132B formed by bonding a number of strip-shaped sheet pieces 132b on the upper surface of the base sheet portion 132A. Base sheet member 132
A is a flexible sheet member having a thickness of 0.1 mm and has the same outer shape as that of the first embodiment. The sheet piece 132b has a length c1 of 10 mm and a width d1 of 20 mm.
And the thickness is 0.17 mm. Using a large number of such sheet pieces 132b, the sheet pieces 132b are arranged and adhered to the upper surface of the base sheet portion 132A with a predetermined gap of 2 mm in a matrix, and are bonded together.
Is formed.

Accordingly, the sheet piece layer 132B has the striped grooves 134A formed between the sheet pieces 132b. Of the striped grooves 134A, the grooves 134a provided in the axial direction of the image input drum 1 are provided so that when the document mounting device 10F is mounted on the image input drum 1, the distance between the grooves 134a is increased so that the supporting upper layer sheet portion is formed. 13
OA is easily bent.

As shown in FIG. 7, similarly to the supporting upper sheet portion 130A, the supporting lower sheet portion 110A
Is a base sheet portion 112A and the base sheet portion 1
And a sheet piece layer 112B made of a holder piece. Further, the disc-shaped holder 1
The disk-shaped lower holder 160A and the disk-shaped upper holder 180A at 50A are respectively connected to the base holder 16
2A, 182A and holder piece layer 162 made up of holder pieces
B, 182B.

The original loading device 10F is provided with the first
Similarly to the embodiment, in a state where the disc-shaped holder 150A is mounted on the supporting sheet 100A, the disc-shaped holder 150A can be rotated to adjust the angle of the original 3 and Since each of the sheet piece layers 112B and 132B and the holder piece layers 162B and 182B are easily bent, the image input drum 1 can be brought into close contact with the outer peripheral surface.

The thickness of the disc-shaped lower holder 160 for preventing the generation of Newton rings varies depending on the wavelength λ and the diameter of the drum.
In an image scanning apparatus using a light source of about μm and a drum having a diameter of 18 cm, it is desirable that the diameter is at least 0.1 mm or more.

Further, the original mounting devices 10E and 10F can exchange various originals 3 by changing the disk holders 150 and 150A having different sizes of the original holder 155 in accordance with the size of the original 3. It can easily respond to the size.

The present invention is not limited to the above embodiment, but can be implemented in various modes without departing from the scope of the invention. For example, the following modifications are possible.

(1) As shown in FIG. 4, in the disk-shaped holder 150, one side of the fixed lower side of the document holder 155 of the disk-shaped lower holder 160 is used for temporarily fixing the document 3. May be provided. Thus, there is an effect that the document 3 can be securely held in the document holding unit 155. The adhesive is a material that can be peeled off many times, and for example, Rimuka (trade name: manufactured by Nichiban Co., Ltd.) or the like can be used.

(2) The supporting sheet portion 100 shown in FIG.
The surface of the annular holding portion 105 and the surface of the document holding portion 155 of the disk-shaped holder portion 150 that slides with the annular holding portion 105 are desirably formed of a material having a low coefficient of friction. For example, tetrafluoroethylene is used. be able to.
When the surface of such a sliding portion is formed of a material having a low friction coefficient, the disk-shaped holder portion 150 can be smoothly rotated with respect to the supporting sheet portion 100.

[0042]

As described above, according to the original mounting apparatus of the present invention, the lower holder of the disc-shaped holder is located at a distance between the image input drum and the original where a Newton ring occurs. Since a large distance is secured, a high-quality image can be obtained without generating Newton rings.

According to the present invention, as in the prior art,
There is no need to use a stone powder or a technique for using an image input drum having a window opened, and it is possible to mount a document at an arbitrary angle on the image input drum by a simple operation.

The disc-shaped holder is rotatably fitted and held in the opening of the supporting sheet. Therefore, even after the original mounting device is attached to the image input drum, the original can be set at a predetermined angle when the image scanning device reads the image by rotating the disc-shaped holder portion with respect to the supporting sheet portion. It is possible to match. Therefore, in order to adjust the angle of the original, a troublesome operation such as reattaching the original is not required, and the operation can be performed with a simple operation.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a document is mounted on an image input drum of an image scanning apparatus.

FIG. 2 is a cross-sectional view showing a state where a document is held by a document loading device in the embodiment.

FIG. 3 is an exploded perspective view showing the document mounting apparatus according to the embodiment.

FIG. 4 is an exemplary perspective view for explaining how to use the document mounting apparatus according to the embodiment;

FIG. 5 is an exemplary perspective view for explaining an operation of mounting the document mounting device according to the embodiment on an image input drum;

FIG. 6 is an exemplary perspective view illustrating an operation of mounting the document mounting device according to the embodiment on an image input drum;

FIG. 7 is a cross-sectional view illustrating a document mounting apparatus according to another embodiment.

FIG. 8 is an exploded perspective view showing a document mounting apparatus according to another embodiment.

FIG. 9 is a perspective view showing a part of a document mounting apparatus according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Drum for image input 3 ... Document 3a ... Reading range 5 ... Adhesive tape 5c ... Adhesive tape 5d ... Adhesive tape 5e ... Adhesive tape 5f ... Adhesive tape 10E ... Document mounting device 100 ... Support sheet part 101 ... Fixed end 105 ... Annular holding part 110 ... Support lower sheet part 111 ... Open end 113 ... Support lower layer opening 120 ... Support middle sheet part 121 ... Open end 123 ... Support middle layer opening 130 ... Support upper sheet part 131 ... Open end 133 ... Upper support opening 140 ... Transparent film part 141 ... Open end 150 ... Disc-shaped holder part 151 ... Fixed end 153 ... Circular protruding part 155 ... Document holding part 160 ... Disc-shaped lower holder part 161 ... Open end 163 ... Reading Opening 170: Disc-shaped middle holder 173: Reading opening 180: Disc-shaped upper holder 183: Reading opening 184: Bending Curved portion 10F Document mounting device 100A Supporting sheet portion 110A Supporting lower sheet portion 112A Base sheet portion 112B Sheet single layer 130A Supporting upper layer sheet portion 132A Base sheet portion 132B Sheet single layer 132b Sheet Piece 134A: Striped groove 134a: Groove 150A: Disc shaped holder 160A: Disc shaped lower holder 162A: Base holder 162B: Holder single layer 180A: Disc shaped upper holder 182A: Base holder 182B ... Holder single layer DR: pointer display MR: scale RF1: reference line RF2: reference end face

Claims (1)

(57) [Scope of request for utility model registration] 1. A document mounting device for mounting a document on an image input drum of an image scanning device, comprising: a supporting sheet portion formed of a flexible sheet member and having a circular opening; A disc-shaped holder portion rotatably fitted to and held by the lower holder, wherein the disc-shaped holder portion is formed of a flexible sheet-shaped member, and has a document reading opening. And a flexible sheet-like member having substantially the same shape as the lower holder, fixed to one edge of the lower holder, and a document between the lower holder. And an upper holder for holding the document.