JP3388658B2 - 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 an image reading apparatus for reading an image signal and a document holder for holding a film mount on which a document to be read is mounted and conveying it to a reading position.

[0002]

2. Description of the Related Art In the fields of printing and plate making, a system is adopted in which originals for photographs and line drawings are read and electrically processed to prepare a master plate for plate making. In the image reading apparatus used for constructing this system, a document is mounted on a document holder, and the document holder is conveyed to a document reading position by a conveying means, and a CCD
The image of the original is read using a photoelectric conversion element such as (CHARGE-COUPLED DEVICES).

In this case, for example, 135 film (35 m
An original made of a film such as m film), 120 or 220 film (Brownie film), or 4 × 5 inch film is usually mounted on the film mount. In order to read the image of the original mounted on the film mount, it is necessary to remove the original from the film mount, which complicates the work.

For this reason, Japanese Patent Laid-Open No. 3-164730 proposes a document holder which can hold a document mounted on a film mount and convey it to a reading position of an image reading device.

FIG. 15 is a perspective view showing an outline of such a document holder 500.

The original holder 500 includes a frame 510 and
Rectangular opening 520 formed in the center of the frame 510
And a mounting plate member 530 to be mounted on. The mounting plate member 530 is provided with a pair of recesses 540 for accommodating the film mount. This recess 540
Is slightly larger than the dimensions of the film mounts it contains.

Further, the mounting plate member 530 has a ring-shaped spring 550 for urging the film mount housed in the recess 540 in the direction of the arrow Y in FIG. 15, and a plate spring for pressing and fixing the film mount from above. 560
And are provided.

In the original holder 500, the film mount housed in the recess 540 of the mounting plate member 530 is constantly urged in one direction (direction of arrow Y) by the ring-shaped spring 550, and the plate spring 560 is also provided. The lifting force is prevented by the pressing force of.

[0009]

In the conventional document holder 500 shown in FIG. 15, since the film mount is configured to be pressed from above by the plate spring 560, the projection of the plate spring 560 on the upper surface of the document holder 500. Will exist. For this reason, when the document holder 500 is stored, the protrusions become obstacles, and it becomes difficult to stack and store a plurality of document holders. In addition, the number of parts is increased, and further, the number of assembling steps is additionally required.

On the other hand, in the original holder 500 shown in FIG. 15, when the leaf spring 560 for pressing and fixing the film mount from above is omitted, the original holder 500 biases the film mount in one direction by the ring-shaped spring 550. With such a configuration, the film mount is bent, which makes it difficult to read the image accurately. That is, when a thin plate-like object such as a film mount is pressed from only one direction of its end face, the thin plate-like object is easily deformed into an arc shape by the pressing force. Figure 15
In the document holder 500 shown in FIG. 7, such a bow-shaped deformation is prevented by pressing the film mount from above by the plate spring 560. In the configuration of the document holder 500, an accurate image is obtained. It is impossible to omit the leaf spring 560 for reading.

Further, the conventional document holder 5 shown in FIG.
In 00, since the film mount is biased only in one direction, the film mount may move in a direction orthogonal to this biasing direction, and when the document holder 500 is conveyed in the image reading apparatus, the film mount may be moved there. The retained film mount can be misaligned. In the image reading apparatus, before the final reading of the image, an image reading called a prescan is performed, the read data is displayed on a display device such as a CRT and trimming designation is performed, and then a main scan is called. Although the final reading is generally performed, if the film mount on which the original to be read is mounted moves during the final reading, a problem occurs in that the final reading is performed on a portion different from the portion to be originally read.

The length and width of the film mount are fixed in accordance with the standards, but the thickness is not constant among manufacturers. Therefore, in the conventional document holder 500 shown in FIG. 15, it is difficult to select the leaf spring 560.

[0013]

The present invention employs the following configurations as means for solving the above problems.

That is, the original holder according to the first aspect is an original holder that holds a film mount on which an original is mounted and conveys it to the reading position of the image reading apparatus, and forms the opening for reading the original. In the main body and the main body
The film mau provided on the outer peripheral portion of the opening
Film mount with a depth greater than the thickness of the
Consists of a recess for payment and a side wall formed by the recess
A first contact portion that contacts the first end surface of the film mount, and a sidewall formed by the recess.
A second contact portion that contacts a second end surface extending in a direction orthogonal to the first end surface of the film mount; and the recess.
Inside, a height substantially the same as the depth of the concave portion that abuts on the end surface of the film mount opposite to the first end surface and biases the film mount in the direction of the first abutting portion.
A first urging means having, and in the concave portion, abutting on an end surface of the film mount facing the second end surface,
Biasing the film mount in the direction of the second contact portion ,
And a second urging means having a height substantially the same as the depth of the recess .

In such a document holder, since the film mount is biased from the two end face directions orthogonal to each other toward the respective abutting portions, the film mounted on the film mount is not bent or misaligned. The mount can be retained. Also, the depth of the recess is
Since it is thicker than the thickness of the mu-mount, the first and second contact parts
To the film mount over the entire thickness direction of the end face
Stabilize the film mount by abutting over
Can be held. In addition, the first and second biasers
Since the step has almost the same height as the depth of the recess,
This is convenient when stacking draft holders.
In addition, an image reading device that uses this document holder
It is also suitable for measurement.

According to a second aspect of the present invention, in the original holder according to the first aspect, each side of the opening is formed.
Is longer than the length of the long side of the document .

In such a document holder, the fill
If the vertical mount is set vertically or horizontally,
Even if it is, you can effectively read the entire image of the original,
Also, you can easily mount the film without touching the original.
It can be removed.

Furthermore, the document holder according to claim 3 is
The original holder according to claim 1 or 2, wherein the original holder holds a plurality of film mounts, and at least one of the first and second biasing means includes the film mount in the center of the original holder. Bias in the direction.

In such a document holder, since the image area formed by a plurality of documents is the smallest,
In the image reading process, the amount of data to be stored in the memory can be reduced.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a first embodiment of a document holder 10 according to the present invention, and FIG. 2 is a plan view thereof.

The document holder 10 shown in these figures is composed of 13
It is a type that can hold four film mounts for 5 films (35 mm film), and a resin main body 12,
The main body 12 has four recesses 14 for mounting a film mount, and an opening 16 for reading an original formed at the bottom of each recess 14.

The recess 14 of the film mount mounting is square in plan view, and atmospheric Kuna' than the thickness of the film mount a depth which is attached thereto. Also,
An elastic member 18 is attached to each of the two side walls of the recess 14 which are located outside the main body 12.

The elastic member 18 is a member having a height substantially equal to the depth of the recess 14 and formed in a substantially arc shape and extending from the side wall of the recess 14. This elastic member 18
Is made of the same resin as that of the main body 12.
Is manufactured simultaneously with the main body 12 by molding such as injection molding. Therefore, the elastic member 18 is easy to manufacture and has a stable elastic force. A hole 19 is provided below each elastic member 18 to facilitate the integral molding of the elastic member 18.

Further, the distance L1 (see FIG. 2) from the central portion of the elastic member 18 to the opposite side wall is set to be slightly smaller than the length (50 mm) of one side of the film mount for the 135 film (35 mm film). It is configured.

The opening 16 for reading an original formed in the bottom of the recess 14 is square, and the length L2 of one side thereof is L2.
Is 135 film (35 mm film) as the original
If the length of the long side of (35mm) or more, 135 film (3
The length of one side of the film mount for a 5 mm film is less than 50 mm. Also,
The center of each opening 16 is closer to the body 12 than the center of each recess 14.
Is eccentric in the central C direction

A long hole 20 is formed at one end of the main body 12, and on the surface of the long hole 20, identification information such as the individual number of the document holder 10 itself and the type of document held therein is shown. The seal member 22 is attached. The seal member 22 is formed by printing a plurality of black areas on a transparent film. For example, as shown in FIG. 3, the light transmission areas S1 and S are formed.
3, S5, S7 and light non-transmissive regions S2, S4, S6, S8
The identification information is expressed by the combination of the arrangement of and. The identification information by the seal member 22 is read by a photo sensor, a CCD or the like (hereinafter, the photo sensor will be described as an example) in an image reading process described later.

On the surface of the main body 12, an arrow 2 indicating the insertion direction when inserting the document holder 10 into the image reading apparatus.
4 is engraved. A positioning notch 26 is provided on one end surface of the main body 12 and is used when the document holder 10 is mounted on a moving table of an image reading apparatus described later.

FIG. 4 shows four film mounts F1, F2, F in which the document N is mounted on the document holder 10 described above.
It is a top view showing the state where F3 was held.

In this figure, the film mount F1
Has one end (first end face) 90 a of the side wall 9 of the recess 14.
1a and the side wall 91 by the elastic member 18a that abuts on the end face 90c that faces the first end face 90a.
It is biased to the a side. Similarly, the film mount F1
The second end surface 9 extending in the direction orthogonal to the first end surface 90a
0b is in contact with the side wall 91b of the recess 14 and is in contact with the end surface 90d facing the second end surface.
It is biased toward the side wall 91b by b.

Therefore, in the film mount F1, the two end faces 90a and 90b in the directions orthogonal to each other are formed in the recess 14
Since it is pressed against the side walls 91a and 91b of the document holder 10, the document holder 10 is securely held without being displaced.

When the material of the film mount F1 is paper, etc., when the film mount F1 is pressed from only one direction, the film mount F1 may be deformed into an arc shape. As described above, when the film mount F1 is pressed from two directions, the phenomenon that the film mount F1 is deformed into an arc does not occur.

Further, in this embodiment, the concave portion 1
The heights of the side walls 91a and 91b and the heights of the elastic members 18a and 18b defined by the depth of 4 are larger than the thickness of the film mount F1 as described above. Four end faces 90
a, 90b, 90c and 90d are side walls 91a and 91b and elastic members 18a and 18b over the entire thickness direction.
And is stably held by the document holder 10.

In the 135 film (35 mm film), the size of the image portion of the original N is usually 35 mm × 24 mm, which is rectangular. On the other hand, the opening 16 of the document holder 10 has a square shape, and the length L2 of one side thereof is set to be the length (35 mm) or more of the long side of the document N as described above. Therefore, there is an advantage that the entire image of the document N can be effectively read not only when the film mount F1 is set in the vertical direction as shown in FIG. 4 but also when it is set in the horizontal direction.

Further, since the size of the opening 16 is set as described above, no matter whether the film mount F1 is set vertically or horizontally, the document N mounted on the film mount F1 is set. A part of the side portion on the long side of is located so as to face the opening 16. Therefore, when removing the film mount F1 from the document holder 10, the film mount F1 can be easily removed without touching the document N by pressing the part of the film mount F1 from the back side of the document holder 10 with a finger or the like. be able to.

Further, in this document holder 10,
The elastic member 18 for fixing the film holder F1 is
It does not project to the upper surface of the document holder 10. Therefore, it is convenient even when the document holders 10 are stacked and stored, and is also suitable for designing an image reading apparatus using the document holders 10.

As shown in FIG. 4, the other three film mounts F2, F3 and F4 are also mounted on the film mount F.
Similar to item 1, the document is set on the document holder 10.

Here, each film mount F1, F2,
Since F3 and F4 are biased toward the center C of the document holder 10 by the elastic member 18, each film mount F
1, F2, F3, and F4 are located at the portions of the recesses 14 that are displaced in the direction of the center C of the document holder 10. Therefore, each film mount F1, F2,
The four document sheets N mounted on F3 and F4 are also attached to the document holder 1
They are arranged close to each other around the center C of 0. Therefore, the image area formed by the four originals N (the area E indicated by the one-dot chain line in FIG. 4) can be minimized, and the data to be stored in the memory can be reduced at the time of prescan described later. You can

Next, the structure of the plane scanning type scanner 100 as an image reading apparatus using the document holder 10 will be described. FIG. 5 is a side view showing an internal schematic configuration of the flatbed scanner 100, and FIG. 6 is a plan view thereof.

As shown in these figures, in the flatbed scanning type scanner 100, the front end of the document holder 10 inserted through the insertion opening 102 has a substantially U-shaped moving table 1.
Retained by 05. The moving table 105 is connected to a motor (not shown) via a synchronous belt 124 and a pair of pulleys 125, and is moved in the left and right directions shown in FIGS. 5 and 6 by driving the motor.

A light source 106 made of a fluorescent lamp is provided below the document holder 10 held by the moving table 105, and the light emitted from the light source 106 moves as the moving table 105 moves. The original document N of the film mount F held by 10 is transmitted, and is incident on the line type CCD 112 having filters of RGB colors through the folding mirror 108 and the lens 110. The light incident on the line CCD 112 is converted into an electric signal corresponding to the image of the original document N, and is captured as an image signal in a memory (not shown).

Further, the plane scanning type scanner 100
Is a photo sensor 12 for optically reading information of the seal member 22 attached to the long hole 20 of the document holder 10.
Equipped with 2.

FIG. 7 is a plan view showing the moving table 105, and FIG. 8 is a sectional view taken along line AA of FIG. In these drawings, the moving table 105 is a substantially U-shaped main body 1
30, a mounting step portion 132 of the document holder 10 recessed in the main body 130, two leaf springs 135 for pressing the upper surface of the document holder 10 mounted therein, and the document holder 10
And a lock mechanism 136 for positioning and fixing.

FIG. 9 is a plan view showing a state in which the moving table 105 holds the document holder 10. In this state, the first slider 136a moves the original holder 10
The second slider 136b is biased by the spring 137 and protrudes by being pressed by the front end surface of the second slider and moving from the position shown in FIG. As a result, the convex portion provided on the second slider 136b engages with the positioning notch portion 26 of the document holder 10 to position and fix the document holder 10. Further, the two leaf springs 135 press and fix the document holder 10 from above.

With the above structure, even when the moving table 105 is made smaller in size than the original holder 10 and only the front end of the original holder 10 is held, the original holder 10 is securely held. Can be transported. Therefore, the moving area of the moving table 105 can be minimized, and the entire image reading apparatus 100 can be downsized.

Next, the electrical construction of the flatbed scanner 100 will be described. FIG. 10 is a block diagram showing an electrical configuration of the flatbed scanner 100.

The flatbed scanning type scanner 100 includes a CPU 15
1 and a bus line 153. Also, bus line 1
Reference numeral 53 denotes a main memory 155 that stores a processing program and work data, an auxiliary memory 157 that stores image data and processing condition data, and a signal from the line CCD 112 converted by the A / D converter 175. , A shading processing unit 171 that obtains variations among the respective elements to equalize the output, a reading region control unit 177 that controls a reading region of the document N on the film mount F held by the document holder 10, and a moving table 1.
The sub-scanning control that receives a detection signal from the origin switch 181 that detects that the document holder 10 moving in the sub-scanning direction reaches the origin position by 05 and outputs a control signal to the drive motor 183 that drives the moving table 105. The section 179 is connected to the long hole reading processing section 185 which operates the photo sensor 122 to optically read the information of the seal member 22 attached to the long hole 20 of the document holder 10. Further, a CRT display 159 for displaying an image and an interface 161 for a keyboard 163 and a mouse 165 are connected to the bus line 153.

The plane scanning type scanner 100 having such a configuration
The image input processing of the document in the above will be described. Figure 1
1, FIG. 12 and FIG. 13 are flowcharts showing an image input process for a document. In addition, the image input process of the manuscript is
Pre-scan, trimming, and main scan are performed in this order.

First, the document holder 10 holding the film mount F on which the document N is mounted is inserted into the insertion opening 102, and the document holder 10 is held on the moving table 105 (step S210).

Next, by outputting a control signal from the sub-scanning control section 179 to the drive motor 183, the document holder 10 is moved in the sub-scanning direction (arrow direction shown in FIG. 6) via the moving table 105 (step). S220). Then, by determining whether or not the origin switch 181 has been turned on, it is determined whether or not the document holder 10 has reached a predetermined origin position (step S23).
0), the moving table 105 is temporarily stopped when the origin position is reached (step S240).

Thereafter, the document holder 10 is moved at a predetermined speed via the moving table 105 (step S250). Then, the shading processing unit 171
Is operated to make the outputs of the respective elements of the line type CCD 112 uniform (step S260). In this processing, a black-and-white reference plate is used, and the outputs of the respective elements are made uniform on the basis of the variation among the respective elements obtained in advance.

Subsequently, the information of the seal member 22 attached to the long hole 20 of the document holder 10 is optically read (step S270).

Next, based on the information of the seal member 22 read in step S270, the document N in the document holder 10 is read.
The size of the reading area of (step S28)
0). This area can be an image area E indicated by a dashed line in FIG. At this time, as described above,
Since the four originals N are arranged close to each other with the center C of the original holder 10 as the center, this area can be limited to the necessary minimum.
Since the image data to be stored in 57 can be limited to the minimum, the processing speed can be improved. The size of the reading area can be determined from the information of the seal member 22 because the reading area size table is stored in the auxiliary memory 157 in advance.
The size of the reading area can be determined by searching the contents of this size table.

Further, from the information of the seal member 22 read in step S270, the document N in the document holder 10 is read.
Reading conditions are set (step S290). Even in this case, the reading condition can be determined from the information of the seal member 22 because the reading condition table is stored in the auxiliary memory 157 in advance. By reading the contents of the reading condition table, the reading condition table can be read. Conditions can be set.

Subsequently, the image of the reading area obtained in step S280 is read by the line CCD 112. This reading is an operation of reading an image with a relatively coarse resolution for trimming described later, and is called prescan. The reading at this time is step S2.
The reading is performed based on the reading conditions obtained in step 90 (step S300). Then, the read image data is stored in the auxiliary memory 157 (step S310). afterwards,
An image is displayed on the CRT display 1 based on the image data.
It is displayed on 59 (step S320).

Next, trimming work is performed based on the image displayed on the CRT display 159 (step S
330). This trimming operation is an operation of designating an area in the image of the pre-scanned document N in which final reading called a main scan (hereinafter referred to as “main scan”) should be performed. This trimming operation is performed by using the mouse 165 for the image displayed on the CRT display 159.
Specify the area using.

In this case, if the image area E shown by the alternate long and short dash line in FIG. 4 is enlarged and displayed on the entire screen of the CRT display 159, the distinctiveness of the image displayed on the screen is improved and the trimming work is performed. It will be easier.

Then, a main scan for reading the image of the area designated in step S330 is performed (step S34).
0). This main scan is an operation for reading an image with a higher resolution than the prescan, and the image data obtained by this is used for color separation and the like.

Before the main scan, the same operations as steps S220 to S250 described above are performed, but these steps are omitted in the flowchart shown in FIG. Also, step S270
The reading condition of the document holder 10 set by reading the information of the seal member 22 may be used as it is as the condition of the main scan, but by reading the information of the seal member 22 again during the main scan, the condition is read again. May be set.

When the main scan is completed, the read image data is stored in the auxiliary memory 157 (step S35).
0). Then, based on the image data, the image is displayed on the CRT.
It is displayed on the display 159 (step S360), and the reading process ends.

In the above-described embodiment, the document holder 10 holding the four film mounts F1, F2, F3 and F4 for 135 film (35 mm film) has been described, but the present invention is 120 or 220 film. (Brownie film) and a document holder that holds a film mount for 4 × 5 inch film can also be applied.

FIG. 14 illustrates the present invention at 120 or 220.
Film mount F for film (Brownie film)
11 is a plan view showing an embodiment applied to a document holder 310 holding 11 and F12. FIG. As shown in this figure, each of the film mounts F11 and F12 has two elastic members 3
18a, 318b are urged from two directions,
Similar to the embodiment described above, the positioning and the fixing are surely performed. Also in this embodiment, the film mounts F11 and F12 are biased by the elastic member 318a in the directions in which they are close to each other (the central direction of the document holder 310). The image area required for the can be minimized.

As described above in detail, in the document holder according to the first aspect, the film mount urges the film mount from the two end face directions orthogonal to each other toward the contact portion, so that the document mounted on the film mount is not bent or bent. The film mount can be held without displacement. In addition,
Since the depth is larger than the thickness of the film mount,
The thickness of the end face of the second contact portion with respect to the film mount
By contacting the entire direction, the film mau
Can be held stably. In addition, the first,
The second biasing means has a height substantially equal to the depth of the recess.
Therefore, when stacking document holders, etc.
It is convenient and the image reading using this document holder
It is also suitable for designing the take-up device.

[0064] The document holder according to claim 2, off
When the film mount is set vertically or horizontally
Even in this case, the entire image of the original can be read effectively.
The film mount without touching the original.
Can be removed.

Further, the document holder according to claim 3 is
Since the image area formed by a plurality of originals is minimized, the data to be stored in the memory can be reduced during the image reading process.

[Brief description of drawings]

FIG. 1 is a perspective view of a document holder 10 according to the present invention.

FIG. 2 is a plan view of a document holder 10 according to the present invention.

FIG. 3 is an explanatory view showing a seal member 22 attached to the long hole 20.

FIG. 4 is a plan view showing a state in which a film mount is held by a document holder 10.

5 is a side view showing an internal schematic configuration of the flatbed scanning scanner 100. FIG.

6 is a plan view showing the internal schematic configuration of the flatbed scanning scanner 100. FIG.

7 is a plan view showing a moving table 105. FIG.

8 is a cross-sectional view taken along the line AA of FIG.

9 is a plan view showing a state in which the moving table 105 holds the original holder 10. FIG.

FIG. 10 is a block diagram showing an electrical configuration of the plane scanning scanner 100.

FIG. 11 is a flowchart showing an image input process.

FIG. 12 is a flowchart showing an image input process.

FIG. 13 is a flowchart showing an image input process.

FIG. 14 is a plan view of a document holder 310 according to another embodiment of the present invention.

FIG. 15 is a perspective view showing an outline of a conventional document holder 500.

[Description of Reference Signs] 10 original holder 12 main body 14 recess 16 opening 18 elastic member (biasing means) 90a, 90b, 90c, 90d end faces 91a and 91b of film mount side wall (contact portion) 100 flat-scanning scanner (image Reader) F Film mount N Original

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-3-164730 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G03B 27/00-27/80 H04N 1 / 10 H04N 1/107

Claims (3)

(57) [Claims] 1. A document holder that holds a film mount on which a document is mounted and conveys it to a reading position of an image reading apparatus, the main body having an opening for reading the document, and an outer periphery of the opening in the main body. Part provided on the
Film with a depth greater than the thickness of the film mount
The film mount includes a recess for accommodating a mount and a side wall formed by the recess, and a first contact portion that contacts the first end surface of the film mount, and a side wall formed by the recess. A second extending in a direction orthogonal to the first end face of the
Of a second abutment region against the end face, in the recess, abuts on the end face facing the first end surface of the film mount, for biasing the films mounted in the direction of the first contact portion, the Almost the same as the depth of the recess
A first biasing means having a height of, and abutting an end surface of the film mount facing the second end surface in the recess, and biasing the film mount in the direction of the second contact portion . Almost the same as the depth of the recess
And a second biasing means having a height of 10 mm . 2. The document holder according to claim 1, wherein the length of each side of the opening is equal to or longer than the length of the long side of the document.
The manuscript holder. 3. The original holder according to claim 1, wherein the original holder holds a plurality of film mounts, and at least one of the first and second biasing means is the film mount. Document holder that biases the document holder toward the center of the document holder.