JP2000292870A - Image reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reader by which high image quality can be guaranteed, and whose reliability is excellent. SOLUTION: The image information of an original is read by using a reading sensor. This reader has a common attaching part to which plural kinds of accessories 4 having different shapes can be attached, a selecting means 3 selecting any of the accessories 4 capable of being attached to the attaching part, and an inhibiting means inhibiting the means 3 from selecting another accessories 4 when the accessory 4 selected by the means 3 is attached to the attaching part. The attaching part has an aperture part by which the shape of the aperture can be changed, so that the accessory 4 inserted through the aperture part becomes in a condition where the accessory 4 is attached to the reader. The aperture part has an aperture shape changing means changing the aperture shape of the aperture part, and the aperture shape changing means is provided as the selecting means of the accessory capable of being attached to the reader.

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 image information of a document such as a developed photographic film using a reading sensor such as a line sensor.

[0002]

2. Description of the Related Art A film scanner (film image reading apparatus) is a conventional example of a device to which this kind of accessory can be attached.
The case will be described with reference to FIGS. Here, FIG. 17 is a perspective view of a main part of a film holder which is one of accessories and an accessory insertion slot of a conventional film scanner.
Is a perspective view of a main part of a film adapter, which is one of accessories and an accessory insertion slot of the film scanner shown in FIG. 17,
19 and 20 are views of the film scanner shown in FIGS. 17 and 18, respectively, when the accessory insertion opening is viewed from the front. FIG. 19 shows a state where the film holder can be inserted into the film scanner, and FIG. 20 shows a state where the film adapter can be inserted into the film scanner.

[0003] In the figure, 101 is a film scanner,
Reference numeral 102 denotes an accessory insertion slot of the film scanner 101, and (I) shows a state where a film holder can be inserted (FIG. 1).
7) and (II) shows a state where the film adapter can be inserted (FIG. 18). Reference numeral 103 denotes a door for adjusting the opening shape of the accessory insertion port 102, and has a handle 103a.

As shown in FIG. 17, reference numeral 104 denotes a film holder, which comprises a base 104a and a cover 104b. Then, the base 104a and the cover 104b
A film (not shown) is interposed therebetween, so that the film image can be read through the window 104c. The arrow a indicates the direction in which the film holder 104 is inserted into the film scanner 101.

As shown in FIG. 18, reference numeral 105 denotes a film adapter for feeding a film (not shown) stored in the cartridge, and reference numeral 106 denotes a cartridge for storing the film. The film adapter 105 has a lid 105a for inserting and removing the cartridge 106 and a window 105b for reading a film image. Then, by opening the lid 105a, the cartridge 106 can be inserted into the film adapter 105 from the direction of arrow c. The arrow b indicates the film scanner 1
The arrow c indicates the direction in which the cartridge 106 is inserted into the film adapter 105.

Next, a method for inserting the film holder 104 and the film adapter 105 into the film scanner 101 will be described. When inserting the film holder 104 into the film scanner 101, the handle 10 of the door 103 is used.
Raise 3a. Thus, the film scanner 101
The accessory insertion opening 102 is set in a state where the film holder shown in FIG. 17 or FIG. 19 can be inserted. Then, the film holder 104 can be inserted into the accessory insertion opening 102 in this state from the direction of arrow a.

When inserting the film adapter 105 into the film scanner 101, the handle 1 of the door 103
Push down 03a. This allows the film scanner 10
The accessory insertion slot 102 is set in a state in which the film adapter shown in FIG. 18 or 20 can be inserted. Then, the film adapter 105 is inserted into the accessory insertion slot 102 in this state.
Can be inserted from the direction of arrow b. The film adapter 105 has a unit for feeding the film in the cartridge 106.

[0008]

However, in the above-mentioned conventional example, the accessory insertion slot 102 is placed in the state shown in FIG.
That is, it is possible to move the door 103 even when the film adapter 105 is inserted and the film adapter 105 is inserted. For this reason, the film adapter 10
If the door 103 is mistakenly pulled up while the door 5 is inserted into the accessory insertion slot 102, the door 103 and the film adapter 105 will collide. In such a case, an excessive force is applied to the positioning portion of the film adapter 105,
If the positioning portion is deformed, it becomes difficult to insert the film adapter 105 into the film scanner 101 at an accurate position. Further, there is a possibility that removal of the film adapter 105 from the film scanner 101 becomes difficult.

Further, if the door 103 and the film adapter 105 come into contact with each other when reading a transparent original, the reading of the image becomes discontinuous or the color shifts, which may cause a deterioration in the quality of the read image.

The present invention has been made in view of such a problem, and has as its object to provide an image reading apparatus which guarantees high image quality and has excellent reliability.

[0011]

An image reading apparatus according to the present invention is an image reading apparatus which reads image information of a document using a reading sensor, and is capable of mounting a plurality of types of accessories having different shapes. A common mounting portion, selecting means for selecting any of the accessories that can be mounted on the mounting portion, and when the accessory selected by the selecting means is mounted on the mounting portion, another selecting by the selecting means Prohibiting means for prohibiting an accessory selection operation.

In the image reading apparatus of the present invention, the mounting portion has an opening whose opening shape can be changed, and an accessory inserted through the opening is mounted on the device. It is characterized in that it is in a state in which it is in a closed state.

Further, in the image reading apparatus of the present invention, the image reading apparatus further comprises an opening shape changing means for changing an opening shape of the opening, and the opening shape changing means is provided as the selecting means.

Further, in the image reading apparatus according to the present invention, the opening shape changing means is constituted by a sliding door or a rotating door which rotates about a predetermined rotation axis. .

Further, the image reading apparatus according to the present invention is characterized in that the image reading apparatus further comprises a detecting means for detecting an attached state of the accessory.

The image reading apparatus according to the present invention is characterized in that the attachment state of at least some of the attachable accessories can be detected by a single detecting means.

Further, in the image reading apparatus of the present invention, the detecting means is provided on a common insertion path of the plurality of types of accessories.

Further, in the image reading apparatus according to the present invention, the accessory is a transparent document holding means for holding a transparent document.

According to the present invention, when the accessory is mounted on the accessory mounting portion of the image reading apparatus, the prohibiting means for prohibiting the selecting operation of the selecting means for the mountable accessory is provided.
The quality of the product and the quality of the read image are not easily reduced, and a highly reliable and high-quality image can be obtained, so that a serious defect is hardly generated.

Further, according to the present invention, the attachment portion for the accessory has an opening and means for changing the shape of the opening of the opening. By changing the shape of the opening, it is possible to select an accessory that can be attached. And As a result, foreign matters such as dust and dust do not easily enter the inside of the image reading apparatus, and have high reliability in which serious defects are unlikely to occur.

According to the present invention, the opening shape changing means is constituted by a sliding door or a rotating door.
The above effects according to the present invention can be easily achieved with a simple configuration.

Further, according to the present invention, since the detection means for detecting the attachment state of the accessory is provided, the prohibition means can be easily controlled in the electrically controlled image reading apparatus.

Further, according to the present invention, since the mounting state of at least some of the accessories that can be mounted can be detected by a single detecting means, a simple configuration is possible even if there are many types of accessories that can be mounted. Can be addressed.

Further, according to the present invention, since the detecting means is provided on a common insertion path for a plurality of types of accessories, it can be easily realized with a simple configuration.

Further, according to the present invention, since the accessory is a transparent document holding means, it is possible to handle transparent documents having different shapes and the like.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an image reading apparatus according to the present invention will be described below with reference to the drawings.

(First Embodiment) A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a main part of a film holder which is one of accessories and an accessory insertion port of the film scanner according to the first embodiment of the present invention, and FIG. 2 is an accessory insertion of the film scanner shown in FIG. FIGS. 3 and 4 are perspective views of the film scanner shown in FIGS. 1 and 2 as viewed from the front of the accessory insertion slot. FIG.
Indicates that the film holder of the film scanner can be inserted.
FIG. 4 shows a state where the film adapter of the film scanner can be inserted.

FIG. 5 is a view of the film holder shown in FIG. 1 as viewed from a direction in which accessories of the film scanner are inserted.
FIG. 6 is a view of the film adapter shown in FIG. 2 as viewed from a direction in which accessories of the film scanner are inserted. FIG. 7 is a cross-sectional view of a main part of the film scanner shown in FIG. 1 as viewed from the side. FIG. 8 is a cross-sectional view of a main part in a state where the film holder is inserted into the film scanner shown in FIG. FIG. 9 is a cross-sectional view of a main part in a state where a film adapter is inserted into the film scanner shown in FIG.

FIG. 10 is a sectional view of a principal part of a film scanner as a modification of the first embodiment of the present invention, as viewed from the side. FIG. 11 is a cross-sectional view of a main part in a state where a film holder is inserted into the film scanner shown in FIG.

In the drawing, reference numeral 1 denotes a film scanner, 2 denotes an accessory insertion slot of the film scanner 1, (I) shows a state in which a film holder can be inserted (FIG. 3), and (II) shows insertion of an accessory of the film scanner. Fig. 4 shows a state in which the film adapter of the mouth can be inserted (Fig. 4). Reference numeral 3 denotes a door provided at an accessory insertion slot of the film scanner 1, which is provided at a handle 3a, a hole 3b forming the accessory insertion slot 2, a concave portion 3c provided below the hole 3b, and a back surface. Groove 3d and a groove 3e (see FIG. 7 and the like).

Reference numeral 4 denotes a film holder, which has a structure in which a film (not shown) is sandwiched between the base 4a and the cover 4b, so that the film image can be read through the window 4c. The film holder 4 is provided with guide grooves 4d, 4d extending in the direction of insertion into the film scanner 1.
e, and a projection 4f at the lower portion of the film holder 4.

Reference numeral 5 denotes a film adapter for feeding the film stored in the cartridge, and reference numeral 6 denotes a cartridge for storing the film. The film adapter 5 has a lid 5 that can be opened and closed to insert and remove the cartridge 6.
a and a window 5b for reading a film image. Then, by opening the lid 5a (not shown), the cartridge 6 can be inserted into the film adapter 5 from the direction of arrow C. Further, the film adapter 5 is provided with guide grooves 5c,
5d.

A carriage 7 holds accessories such as the film holder 4 and the film adapter 5 and scans a film image. The carriage 7 has guide rails 7a and 7b having a convex shape along the direction in which accessories (the film holder 4 and the film adapter 5) are inserted into the film scanner 1 (see FIGS. 3 and 4). The guide rails 7a and 7b are structured to be engageable with the guide grooves 4d and 4e of the film holder 4 and the guide grooves 5c and 5d of the film adapter 5, respectively.

When the film holder 4 or the film adapter 5 is inserted into or attached to the film scanner 1, the guide grooves 4d and 4e and the guide grooves 5c and 5d are engaged with the guide rails 7a and 7b, and The film adapter 5 is inserted into the film scanner 1. The guide rails 7a and 7b are positioned with respect to the carriage 7 and can be mounted.

Reference numeral 8 denotes a guide bar fixed to a fixed portion (not shown) of the film scanner 1, and is engaged with a sleeve portion (not shown) of the carriage 7. Reference numeral 9 denotes a locking claw rotatably held by a fixed portion of the film scanner 1. The locking claw 9 is composed of a rotating shaft 9a, a claw 9b, and a lever 9
c (see FIG. 7 and the like). Here, the locking claw 9 is a rotating shaft 9
a is rotatable about a
b is urged toward a stopper 1a provided on the film scanner 1 by urging means such as a spring (not shown).

Next, a method of inserting the film holder 4 or the film adapter 5 into the film scanner 1 will be described.

As shown in FIG. 7, the film scanner 1
When no accessories are inserted into the door 3, the claw portions 9 b of the locking claws 9 are not engaged with the grooves 3 d and 3 e provided on the back surface of the door 3. Therefore, at this time, the door 3 can be slid vertically. When the film holder 4 is inserted into the film scanner 1, the door 3
The handle 3a of the film scanner 1 is pulled up, and the accessory insertion portion of the film scanner 1 is inserted into the accessory insertion port 2 shown in FIGS.
(I), a state where the hole 3b appears. Then, the film holder 4 can be inserted into the accessory insertion opening 2 (hole 3b) from the direction of arrow A.

FIG. 8 shows a state where the film holder 4 is inserted into the film scanner 1 as described above. By inserting the film holder 4, the film holder 4
4g pushes down the lever 9c of the locking claw 9. Then, the locking claw 9 rotates clockwise in FIG. 8 about the rotation shaft 9a, and the claw 9b engages with the groove 3d of the door 3. For this reason, the door 3 is locked and the door 3 cannot be slid. And the film scanner 1
When the film holder 4 is pulled out from the above, the locking claw 9 is rotated counterclockwise around the rotating shaft 9a by the urging means (not shown) until it hits the stopper 1a, and the film scanner 1 is brought into the state shown in FIG.

When the film adapter 5 is inserted into the film scanner 1, the handle 3a of the door 3 is pulled down from the state of the film scanner 1 shown in FIG.
The accessory insertion portion of the film scanner 1 is set in a state where the accessory insertion port 2 (II) shown in FIGS. 2 and 4 appears. Then, the film adapter 5 is inserted into the accessory insertion opening 2 (II) from the direction of arrow B. In addition, the film adapter 5
Is provided with means for feeding the film in the cartridge 6.

The film adapter 5 is connected to the film scanner 1
FIG. By inserting the film adapter 5, the lower surface of the film adapter 5 pushes down the lever portion 9 c of the locking claw 9. Then, similarly to the case where the film holder 4 is inserted, the locking claw 9 rotates clockwise in FIG. 9 around the rotation shaft 9 a, and the claw 9 b engages with the groove 3 e of the door 3. For this reason, the door 3 is locked and the door 3 cannot be slid. Then, when the film adapter 5 is pulled out from the film scanner 1, the locking claw 9 is rotated by the urging means (not shown).
The film scanner 1 rotates counterclockwise around the point a until it hits the stopper 1a, and the film scanner 1 is in the state shown in FIG.

Here, as shown in FIGS. 1 and 3, when the film scanner 1 is in a state where the film holder 4 can be inserted, the film holder 4 can be inserted as a matter of course. On the other hand, it is apparent that the film adapter 5 shown in FIG. 6 cannot be inserted into the film scanner 1 through the accessory insertion slot 2 (I) (hole 3b).

As shown in FIGS. 2 and 4, when the film scanner 1 is in a state where the film adapter 5 can be inserted, the film adapter 5 can be inserted. For the film holder 4 shown in FIG.
When the guide grooves 4d and 4e are engaged with the guide grooves 4a and 7b and the attempt is made to insert the film holder 1 into the film scanner 1, the projection 4f of the film holder 4 and the handle 3a of the door 3 interfere, and the film holder 4 is inserted into the film scanner 1. I can't.

When the film scanner 1 is in a state where the film holder 4 can be inserted, the projection 4f of the film holder 4 can pass through the recess 3c of the hole 3b forming the accessory insertion slot 2 (I). . At this time, the film holder 4 can be inserted into the film scanner 1.

Next, a modified example of the first embodiment will be described with reference to FIGS. FIG.
In FIG. 0 and FIG. 11, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the drawing, reference numeral 10 denotes a locking claw rotatably held by a fixed portion of the film scanner 1. The locking claw 10 includes a rotating shaft 10a, a claw portion 10b, and a magnetic body portion 1.
0c. Here, the locking claw 10 is configured to be rotatable about a rotation shaft 10a, and its magnetic body 10
c is urged toward a stopper 1a provided on the film scanner 1 by urging means such as a spring (not shown). 1
Reference numeral 1 denotes an electromagnet provided on a fixed portion of the film scanner 1, and is electrically connected to a film scanner control circuit (not shown) by an electric signal line 11a. A sensor 12 is provided on the carriage 7 and includes a photo-interrupter and the like for detecting attachment of the film holder 4 and accessories of the film adapter 5. In addition, the sensor 12
Are electrically connected to a film scanner control circuit (not shown) by an electric signal line 12a.

The locking claw 10 in the configuration of this modified embodiment
Is different from the first embodiment in a portion electrically controlled by the electromagnet 11 and the sensor 12.

Next, a method of inserting the film holder 4 or the film adapter 5 into the film scanner 1 will be described.

When no accessories are inserted into the film scanner 1 as shown in FIG. 10, the claw portions 10b of the locking claw 10 are provided with grooves 3d and 3e provided on the back surface of the door 3.
Is not engaged. Therefore, at this time, door 3
Can be slid up and down. When the film holder 4 is to be inserted into the film scanner 1, the handle 3a of the door 3 is pulled up, and the accessory insertion portion of the film scanner 1 is inserted into the accessory insertion port 2 shown in FIG.
Is made to appear. Then, the film holder 4 is inserted into the accessory insertion slot 2 (I) (the hole 3b).

FIG. 11 shows a state where the film holder 4 is inserted into the film scanner 1 as described above. When the film holder 4 is inserted into the film scanner 1 and the sensor 12 detects the attachment to the carriage 7, the information is transmitted to a film scanner control circuit (not shown) via an electric signal line 12a. Then, the film scanner control circuit energizes the electromagnet 11 through the electric signal line 11a,
The magnetic body portion 10c of the locking claw 10 is sucked. Then, the locking claw 10b engages with the groove 3d of the door 3. For this reason, the door 3 is locked and the door 3 cannot be slid.

When the film holder 4 is pulled out from the film scanner 1, the sensor 12 detects that the film holder 4 is not mounted. When this information is transmitted to the film scanner control circuit, the power supply to the electromagnet 11 is stopped. Then, the locking claw 9 is rotated clockwise by a biasing means (not shown) around the rotating shaft 10a until it hits the stopper 1a, and the film scanner 1 is brought into the state shown in FIG.

Similarly, when inserting the film adapter 5 into the film scanner 1, the handle 3a of the door 3 is pulled down from the state of the film scanner 1 shown in FIG. The accessory insertion part of the film scanner 1 is brought into a state where the accessory insertion opening 2 (II) shown in FIGS. 2 and 4 appears. Then, the film adapter 5 is inserted into the accessory insertion slot 2 (II).

The film adapter 5 is connected to the film scanner 1
Although not shown, when the sensor 12 detects the attachment of the film adapter 5 to the carriage 7 in the same manner as when the film holder 4 is inserted, the information is transmitted to an unillustrated film scanner by an electric signal line 12a. It is transmitted to the control circuit. Then, the film scanner control circuit energizes the electromagnet 11 through the electric signal line 11a, and sucks the magnetic portion 10c of the locking claw 10. And
The locking claw 10b is engaged with the groove 3e of the door 3, so that the door 3 is locked and the door 3 cannot be slid.

When the film adapter 5 is pulled out from the film scanner 1, the sensor 12 detects that the film adapter 5 is not mounted. When this information is transmitted to the film scanner control circuit, the power supply to the electromagnet 11 is stopped. Then, the locking claw 9 is rotated clockwise by a biasing means (not shown) around the rotating shaft 10a until it hits the stopper 1a.
The state shown in FIG.

(Second Embodiment) Next, the second embodiment of the present invention will be described.
The embodiment will be described with reference to FIGS. FIG.
FIG. 13 is a perspective view of a main part of a film holder which is one of accessories and an accessory insertion slot of the film scanner according to the second embodiment of the present invention. FIG. 14 and 15 are views of the film scanner shown in FIGS. 12 and 13 as viewed from the front of an accessory insertion slot, and FIG. 14 is a film scanner. 15 shows a state where the film holder can be inserted, and FIG. 15 shows a state where the film adapter of the film scanner can be inserted. FIG.
FIG. 13 is a cross-sectional view of a principal part of the film scanner shown in FIG. 12 as viewed from the side.

The view of the film holder shown in FIG. 12 as viewed from the direction in which the accessories of the film scanner are inserted is the same as FIG. 5, and the view of the film adapter shown in FIG. 13 as viewed in the direction of the accessories of the film scanner. Are the same as those in FIG. 12 and FIG.
The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the figure, reference numeral 21 denotes a film scanner, 2
Reference numeral 2 denotes an accessory insertion port of the film scanner, (I) shows a state where the film holder can be inserted, and (II) shows a state where the film adapter can be inserted into the accessory insertion port of the film scanner. Reference numeral 23 denotes a door provided in an accessory insertion portion of the film scanner 21, a handle portion 23a, a hole portion 23b forming an accessory insertion port 22 (I), a concave portion 23c provided below the hole portion 23b, and a back surface. Have arms 23d and 23e. The arm 23e has two grooves (not shown) on its lower surface.

Further, 24 is linked with the door 23,
This is a limit lever that moves up and down in accordance with the opening and closing of. (Door 23
When the door 23 is open, as shown in FIGS. 13 and 15, the limit lever 24 is in an up state. When the door 23 is closed as shown in FIG. 12 and FIG.
It is configured such that the film holder 4 can be inserted into 3b.

A carriage 25 holds accessories such as the film holder 4 and the film adapter 5 and scans a film image (see FIG. 16). Further, the carriage 25 has convex guide rails 25a and 25b along the direction in which accessories (the film holder 4 and the film adapter 5) are inserted into the film scanner 21. The guide rails 25a and 25b are respectively attached to the film holder 4
And the guide grooves 4d and 4e of the film adapter 5 and the guide grooves 5c and 5d of the film adapter 5. When the film holder 4 and the film adapter 5 are inserted into and attached to the film scanner 21, the guide grooves 4d, 4e
The film holder 4 and the film adapter 5 are inserted into the film scanner 21 by engaging the guide grooves 5c and 5d with the guide rails 25a and 25b. The guide rails 25a and 25b are configured to be positioned and mounted on the carriage 25.

Reference numeral 26 denotes a guide bar fixed to a fixed portion (not shown) of the film scanner 21.
(Not shown). Reference numeral 27 denotes a locking claw rotatably held by a fixed portion of the film scanner 21. The locking claw 27 has a rotating shaft 27a, a claw 27b, and a lever 27c. Here, the locking claw 27 is configured to be rotatable about a rotation shaft 27a. Further, the claw portion 27b is formed by a biasing means such as a spring (not shown).
It is urged toward a stopper 21 a provided on the film scanner 21.

Next, a method for inserting the film holder 4 and the film adapter 5 into the film scanner 21 will be described. As shown in FIG.
When the accessory is not inserted into the door 23, the claw portion 27b of the locking claw 27 is not engaged with two not-shown grooves provided on the lower surface of the arm 23e of the door 23. Therefore, at this time, the door 23 can be opened and closed. When the film holder 4 is to be inserted into the film scanner 21, the door 23 is closed, and the accessory insertion portion of the film scanner 21 is brought into the state shown in FIGS. Then, the film holder 4 can be inserted into the accessory insertion opening 22 (I) (hole portion 23b) from the direction of arrow D.

The film holder 4 is moved to the film scanner 21
Then, the projection 4g of the film holder pushes down the lever portion c of the locking claw 27 as in the case of the first embodiment. Then, the locking claw 27 rotates clockwise about the rotation shaft 27a, and the claw portion 27b engages with the first groove (not shown) of the arm 23e of the door 23. For this reason, the door 23 is locked, and the door 23 cannot be opened and closed.
When the film holder 4 is pulled out from the film scanner 21, the locking claw 27 is rotated counterclockwise around the rotating shaft 27a by the urging means (not shown) until it hits the stopper 21a, and the state shown in FIG. 16 is obtained.

When inserting the film adapter 5 into the film scanner 21, the handle 23a of the door 23 is pulled to open the door 23. The accessory insertion portion of the film scanner 21 is connected to the accessory insertion port 22 shown in FIGS.
(II) appears. At this time, the limit lever 24
Is interlocked with the opening of the door 23 and rises from below to reach the state shown in FIGS. And this accessory insertion port 22
The film adapter 5 can be inserted into (II) from the direction of arrow E.

Here, when the film scanner 21 shown in FIGS. 12 and 14 is in a state where the film holder 4 can be inserted, the film holder 4 can of course be inserted. On the other hand, the film adapter 5 shown in FIG. 6 is inserted through the accessory insertion slot 22 (I) (hole 23b).
Obviously, it cannot be inserted into 1.

As shown in FIGS. 13 and 15, when the film scanner 21 is in a state where the film adapter 5 can be inserted, the film adapter 5 can of course be inserted. With regard to the film holder 4 shown in FIG. 5, when the guide grooves 4d and 4e are engaged with the guide rails 25a and 25b and the attempt is made to insert the film scanner 21, the projection 4f of the film holder 4 and the restriction lever 24 interfere with each other. ,
The film holder 4 cannot be inserted into the film scanner 1.

When the film scanner 21 is mounted on the film holder 4
Of the accessory insertion slot 22 (I)
The recess 23c of the hole 23b forming the
4f can pass through. At this time, the film holder 4 can be inserted into the film scanner 21.

The film adapter 5 is connected to the film scanner 2
1, the lower surface of the film adapter pushes down the lever portion 27c of the locking claw 27 as in the first embodiment. Then, similarly to when the film holder 4 is inserted, the locking claw 27 rotates clockwise around the rotation shaft 27a, and the claw portion 27b engages with the second groove (not shown) of the arm 23e of the door 23. For this reason, the door 23 is locked, and the door 23 cannot be opened and closed. When the film adapter 5 is pulled out from the film scanner 21, the locking claw 27 is rotated by the urging means (not shown).
It rotates counterclockwise around a until it hits the stopper 21a, and the state shown in FIG. 16 is obtained.

It is to be noted that, as in the modified example of the first embodiment, a sensor for detecting the mounting of the locking claw having the magnetic body portion, the electromagnet, and the accessory is used without using the locking claw 27 according to the present embodiment. You may comprise.

As described above, in the first and second embodiments, the shape of the accessory attachment portion is changed by the doors 3 and 23, and the accessory that can be attached to the film scanners 21 is selected. . That is, the doors 3 and 23 are used as means for selecting accessories that can be attached to the film scanners 21.

Here, in the embodiment of the present invention, the doors 3 and 23 are manually opened and closed. However, the doors may be opened and closed electrically by providing a motor for opening and closing the doors in the film scanner. The sliding direction of the door may be left and right instead of up and down, and the rotation of the door may be up and down instead of right and left. In other words, if the door functions as a means for selecting accessories that can be attached to the film scanner as described above,
Anything may be used.

Further, in the first embodiment, the shape of the accessory mounting portion is changed in a part of the door, and in the second embodiment, the accessory mounting portion is formed by a part of the door and a member interlocking with the door. The shape of the part is changed. This may be either, and the shape of the accessory mounting portion may be changed only by another member that does not interlock with the door. That is, in the first and second embodiments, the door is selected as an accessory that can be attached to the film scanner. However, this means that the accessory that can be attached by changing the shape of the accessory attachment portion of the film scanner is changed. Any means may be used instead of the door as long as the selecting means is used.

In the second embodiment, the door 23
The limit lever 24 is moved up and down in conjunction with the opening and closing of. It has a door open / closed state detecting means and a driving means for raising and lowering the restricting lever 24. The output of the detecting means may drive the restricting lever 24 up and down by the driving means. The limit lever 24 may be moved up and down by linking the limit lever 24 to the opening and closing of the door 23 by mechanically connecting the lever 24. Also, the limit lever 24
Instead of moving up and down, you may move left and right to rotate.

Further, the number of accessories that can be mounted on the film scanner is not limited to two, but may be any number.

[0073]

As described above, according to the present invention, it is possible to provide an image reading apparatus in which a highly reliable and high quality image can be obtained and a serious defect hardly occurs. In this case, it can be easily achieved with a simple device configuration, and has advantages such as being extremely advantageous in terms of cost.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a film scanner and a film holder according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a main part of the film scanner and the film adapter shown in FIG.

FIG. 3 is a front view of the film scanner shown in FIG. 1 in a state where a film holder can be inserted;

FIG. 4 is a front view of the film scanner shown in FIG. 2 in a state where a film holder can be inserted;

FIG. 5 is a view of the film holder shown in FIG. 1 as viewed from a direction in which accessories of the film scanner are inserted.

FIG. 6 is a view of the film adapter shown in FIG. 2 as viewed from a direction in which accessories of the film scanner are inserted.

FIG. 7 is a sectional view of a main part of the film scanner shown in FIG. 1 as viewed from a side.

FIG. 8 is a cross-sectional view of a main part when viewed from the side when a film holder is inserted into the film scanner shown in FIG. 1;

FIG. 9 is a cross-sectional view of a main part viewed from the side when a film adapter is inserted into the film scanner shown in FIG. 1;

FIG. 10 is a cross-sectional view of a main part of a film scanner of a modified example according to the first embodiment of the present invention, as viewed from the side.

FIG. 11 is a cross-sectional view of a main part viewed from a side when a film holder is inserted into the film scanner shown in FIG. 10;

FIG. 12 is a perspective view of a main part of a film scanner and a film holder according to a second embodiment of the present invention.

13 is a perspective view of a main part of the film scanner and the film adapter shown in FIG.

14 is a front view of the film scanner shown in FIG. 12 in a state where a film holder can be inserted.

FIG. 15 is a front view of the film scanner shown in FIG. 13 in a state where a film adapter can be inserted;

FIG. 16 is a cross-sectional view of a main part of the film scanner shown in FIG. 12, as viewed from the side.

FIG. 17 is a perspective view of a main part of a conventional film scanner and a film holder.

18 is a perspective view of a main part of the film scanner and the film adapter shown in FIG.

19 is a front view of the film scanner shown in FIG. 17 in a state where a film holder can be inserted.

FIG. 20 is a front view of the film scanner shown in FIG. 18 in a state where a film adapter can be inserted;

[Explanation of symbols]

1, 21, 101 Film scanner 1a, 21a Stopper 2 (I), 22 (I) Accessory insertion slot (film holder can be inserted) 2 (II), 22 (II) Accessory insertion slot (film adapter can be inserted) ) 3,23,103 Doors 3a, 23a, 103a Handle 3b, 23b Hole 3c, 23c Depression 3d, 3e Groove 4,104 Film holder 4a, 104a Base 4b, 104b Cover 4c, 104c Window 4d, 4e Guide groove 4f Projection portion 5,105 Film adapter 5a, 105a Lid 5b, 105b Window 5c, 5d Guide groove 6,106 Cartridge 7,25 Carriage 7a, 7b, 25a, 25b Guide rail 8,26 Guide bar 9,10,26 Locking claw 9a, 10a, 27a Rotation axis 9b, 10b, 27b Claw 9c, 27 Lever portion 10c magnetic body 11 electromagnets 11a, 12a electric signal line 12 sensors 23d, 23e arm 24 limits the lever

Claims (8)

[Claims] 1. An image reading apparatus for reading image information of a document using a reading sensor, comprising: a common mounting portion capable of mounting a plurality of types of accessories having different shapes; Selecting means for selecting any of the accessories, prohibiting means for prohibiting the selecting operation of other accessories by the selecting means when the accessory selected by the selecting means is mounted on the mounting portion, An image reading apparatus comprising: 2. The image reading device according to claim 1, wherein the mounting portion has an opening whose opening shape can be changed, and an accessory inserted through the opening is a device. An image reading device, wherein the image reading device is attached to a device. 3. The image reading apparatus according to claim 2, further comprising: an opening shape changing unit that changes an opening shape of the opening, wherein the opening shape changing unit is provided as the selecting unit. Image reading device. 4. The image reading device according to claim 3, wherein the opening shape changing means is configured by a sliding door or a rotating door that rotates around a predetermined rotation axis. Characteristic image reading device. 5. The image reading apparatus according to claim 1, further comprising a detecting unit configured to detect an attached state of the accessory. 6. The image reading apparatus according to claim 5, wherein a mounting state of at least a part of the mountable accessories can be detected by a single detecting unit. 7. The image reading apparatus according to claim 6, wherein said detecting means is provided on a common insertion path of said plurality of types of accessories. 8. The image reading apparatus according to claim 1, wherein the accessory is a transparent document holding unit that holds a transparent document.