JPH07177275A - Image input device - Google Patents

Abstract

PURPOSE:To make possible discharging operation even unless the power supply is turned ON and to securely inhibit a slide mount from being discharged by engaging a disengaging means with an engaging means and rotating it when the disengaging means moves reciprocally, and releasing a document and the engaging means from engagement. CONSTITUTION:Light transmitted through a film original is converted in optical path by 90 deg. through a 45 deg. reflecting mirror 41 and imaged on a CCD 43 through a projection lens 42. Further, a CCD holder 46 serves for light shielding and dust protection. Further, a projection system cover 44 also shields the whole projection optical system from light and protects it against dust. A spring 23 fitted to the rack carriage abuts on an injection plate 22 fitted slidably to a rack carriage 16 to energize the plate 22 as shown by an arrow A. With an injection button 19 pressed, the conic surface of an injection rod 21 abuts on the 45 deg. surface 24a of an engagement plate 24 as shown by the arrow C, and the engagement part is retracted to the plate 22 by rotating around the fulcrum of the carriage 16 as shown by an arrow B. The plate is disengaged from the engagement part to becomes movable as shown by the arrow, and a film mount comes out through the spring 23 and can be taken out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input device for reading an image on a photographic film or the like with transmitted light or reflected light.

[0002]

2. Description of the Related Art The main body of an image input apparatus is roughly divided into an illuminating section as an illuminating means for guiding illuminating light onto a transparent original, a scanning section having a carriage as a holding means for holding and moving the transparent original, and an original. It is composed of a projection unit as a reading unit for forming an image of transmitted light from the image sensor on a line sensor (CCD). The light from the illumination unit is condensed into a linear shape on the transparent original, and after passing through the original, an image is formed on the CCD, which is read as one line data. 1
After the line reading is completed, the scanning unit moves for one line to change the position of the transparent original and read again. Scanning for one screen is performed by repeating such reading and movement a plurality of times.

As a conventional image input apparatus having the above-mentioned structure, as described in JP-A-3-145881, a film insertion opening into which a film as a transparent original is inserted is formed on the surface. A configuration is known that includes a support, a conveying unit that conveys a film in a reciprocating manner from the film insertion opening to the back, and an optical reading unit that has at least a part having an optical axis orthogonal to the conveying direction of the conveying unit. is there.

[0004]

However, in the above-mentioned conventional image input device, when the film is inserted into the mounting means of the image input device from the insertion opening, the film pops out from the insertion opening. The user may inadvertently touch the film, and as a result,
There has been a problem that the conveying means is damaged due to an unreasonable force, or the film moves and tilts with respect to the conveying means and is fixed, and normal reading cannot be performed.

There is also a problem that the slide mount cannot be ejected at any time other than the scanning operation, and the ejection operation cannot be performed when the power is not turned on.

The present invention has been made in view of such a situation, and the mounted film can be surely held by the holding means without touching the user of the apparatus, and the film can be easily read after reading the film. In addition to providing an image input device that can be taken out, the slide mount can be ejected at any time other than the scanning operation, and the ejection operation can be performed even when the power is not turned on. The purpose is to ensure that emissions can be prohibited.

[0007]

In order to achieve the above object, the present invention provides a light irradiation optical system (36, 37, 38, 39, 40) for irradiating a document with reading light, and transmitted light or reflection of the document. A reading unit (41, 42, 43, 44) that forms an image of light to read an image of a document, a document holding unit (15, 16) that moves while holding the document, and a document holding unit (15, 16). Reciprocating movement guiding means (17) for guiding reciprocating movement, document urging means (23) for urging the document held in the document holding means (15, 16) in the discharge direction, and document urging means (23). Locking means (2) that engages with the document biased by the document and fixes the document to the document holding means (15, 16).
4) and a lock release means (21) for releasing the engagement between the document and the lock means (24), and the lock release means (21).
Is a rod-shaped member that reciprocates in the reciprocating direction of the reciprocating guide means (17), and the locking means (24) is a plate-like member that rotates in a direction perpendicular to the reciprocating direction of the reciprocating guide means (17). It is a member and engages with the locking means (24) when the locking release means (21) reciprocates, and the locking means (24).
It is configured to release the engagement between the document and the locking means (24) by rotating the.

[0008]

In the image input device having the above structure, when the lock releasing means reciprocates in the reciprocating direction of the reciprocating movement guiding means, the lock releasing means engages with the locking means to rotate the locking means. By doing so, the engagement between the document and the locking means is released, so the slide mount can be ejected at any time other than the scanning operation, and the ejection operation can be performed even when the power is not turned on. Moreover, it is possible to surely prohibit the ejection of the slide mount during the scanning operation.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing an embodiment of an image input device according to the present invention.

In FIG. 1, the main body of the image input apparatus scans the film by moving an illuminating optical section as an illuminating means for guiding the illuminating light onto a film as a transparent original and a carriage as a holding means for holding the film. It is composed of a scanning unit and a projection optical unit which forms an image of the transmitted light from the film on a CCD and reads it, and is housed in a housing.

The casing is a body 1 made of aluminum die-cast.
And an upper cover 2 made of aluminum for covering the upper part of the body 1, and a front panel 3 made of polycarbonate for covering the front surface of the body 1. A mechanical body 4 for accommodating an image reading system including a scanning unit, an illumination optical unit, and a projection optical unit, and a main substrate 5 are screwed to the body 1. Further, the front side of the upper cover 2 is locked to the front panel 3, and the rear side is fixed to the body 1 with a screw (not shown). The upper cover 2 and the front panel 3 cover the image reading system.

The main board 5 (FIG. 2) and the mechanical body 4 are connected by four sets of harnesses 6, and the front panel 3
Is provided with an insertion opening 7 for inserting a film mount and an LED window (not shown) for displaying a status. In addition, from the front panel 3, the manual focus cam 27
A part of the outer periphery of the is protruding (Fig. 1), and the focusing operation can be performed from the front side. The focus cam 27 is a disk-shaped rotary cam having a surface cam on one surface. The eject button 19 also protrudes from the front panel 3 so that the eject operation of the film mount inserted into the insertion port 7 can be performed. Furthermore, body 1
The surface opposite to the front panel 3 (back side) has a large opening so that various connectors provided on the main board 5 can be connected.

The scanning unit is composed of a carriage unit having a film mount holding and moving mechanism and a film focus adjusting mechanism, and a motor unit having a power transmission mechanism for transmitting a motor driving force to the carriage unit. The motor portion is composed of a step motor 11 (FIG. 1) and a reduction gear 14a (integrated with the pinion gear 14) that reduces the rotation of the step motor 11, and is fixed to the motor mounting plate 12 (FIG. 3). The motor mounting plate 12 is screwed to the mechanical body 4. The stepping motor 11 screwed to the motor mounting plate 12 rotates the motor gear 13 press-fitted into the motor shaft, and rotates the pinion gear 14 via the reduction gear. Stepping motor 1
1 is 0. 1 per step corresponding to one line of the image.
Rotate 9 degrees.

As shown in FIG. 2, the illumination optical section includes an illumination base 36, an LED block 37, and a toric mirror 3.
It is composed of an 8- and 40-degree mirror 29 and an illumination system lid 40, and the whole is screwed to the mechanical body 4 with a screw.

The LED block 37, which is a light source, is fixed on the illumination base 36 via an insulating sheet with an insulating collar and screws. The toric mirror 38 is rotatably attached to the illumination base 36 about a cylindrical protrusion provided on the side surface, and is fixed with a screw after adjusting the angle.
The 40-degree mirror 39 is adhesively fixed to the bent portion formed on the illumination base 36. The illumination system lid 40 includes an LED block 37, a toric mirror 38, and a 40 degree mirror 39.
Is fixed via two locking portions formed on the illumination base 36 so as to cover the. Further, a slit for passing the illumination light toward the film mount is provided above the 40-degree mirror 39. In addition,
The illumination system lid 40 blocks external light that enters the illumination optical system.

As shown in FIG. 2, the projection optical section is composed of a 45-degree reflection mirror 41, a projection lens 42, a CCD 43, and a projection system lid 44, and the mechanical body 4 is divided into three parts at the bottom center by walls. It is located in the part where The 45-degree reflection mirror 41 is adhesively fixed to the mechanical body 4. The projection lens 42 is composed of 6 lenses in 4 groups in a symmetrical shape, and is fixed to the lens chamber by a separation ring and a pressing ring.
The lens chamber is fixed to the mechanical body 4 with a set screw. The CCD substrate 45 on which the CCD 43 is mounted is screwed to the mechanical body 4 via a CCD holder 46.
Further, a projection system lid 44 is screwed to the outer periphery of the part partitioned by the wall.

In the above arrangement, the light transmitted through the film original is converted by the 45-degree reflecting mirror 41 in the optical path by 90 degrees, and thereafter, is imaged on the CCD 43 by the projection lens 42. The CCD holder 46 also serves as a light shield and a dust proof. Further, the projection system lid 44 also serves as a light shield and dustproof for the entire projection optical section, and also serves as a retainer for the guide bar 17 in the scanning section.

The carriage portion is composed of a carriage 15 and a rack carriage 16 that are integrally opposed to each other with a predetermined gap therebetween. One end is fitted in the groove portion of the mechanical body 4 and the other end is fitted in the focus block 25. It is movable by being guided by a pair of parallel guide bars 17 (see FIG. 2). Further, two film pressing springs 18 are fixed to both ends of the facing surfaces of the carriage 15 and the rack carriage 16, and the film mounts inserted between the carriages 15 and 16 come into contact with each other.

By balancing the urging force of the film pressing spring 18, even if film mounts having different thicknesses are inserted between the carriages 15 and 16, the film mounts are always mounted on the carriage 15 and the rack carriage 1.
Located in the center between 6 and 6. Since the centers of the carriage 15 and the rack carriage 16 are in the optical focus position, if the emulsion surface of the film is located in the center of the mount even if the mount thickness is different, focus adjustment can be omitted ( See FIG. 2).

The rack carriage 16 is integrally formed with a beveled tooth rack 16a of, for example, a module 0.3 in parallel with the moving direction. The pinion gear 14 is meshed with the beveled tooth rack 16a, and the Driving force is transmitted, whereby the carriage 15 and the rack carriage 16 are moved.

Next, the eject mechanism will be described. As shown in FIG. 11, the rack carriage 1 is made slidable.
An eject spring 23 attached to the rack carriage 16 is in contact with the eject plate 22 attached to the No. 6 and urges the eject plate 22 in the film mount ejection direction (arrow A direction). Also eject board 2
The reference numeral 2 indicates a discharging direction (direction of arrow A) due to a locking plate 24 attached to the rack carriage 16 so as to be vertically rotatable.
Movement is regulated. The engaging portion 24a protruding out of the rack carriage 16 has an inclined surface of about 45 degrees and locks the eject plate 22.

A through hole 24c is provided in the central portion of the locking plate 24, and the rack carriage 16 is provided in the through hole 24c.
The projecting portion 16g formed integrally with is inserted. Further, the locking plate 24 is held by the support portion 16f (see FIG. 11) formed near the corner of the rack carriage 16 and the corner of the rack carriage 16, and the protrusion 16g inserted into the through hole 24c. Prevents the locking plate 24 from falling off. With these combinations, the locking plate 24 rotates in the direction of arrow B in FIGS. 11 and 12 about the fulcrum 16e of the rack carriage 16 (corner of the rack carriage 16).

The eject button 19 is attached to the front panel 3 while being biased by the button spring 20 (see FIG. 8). An eject rod 21 is press-fitted into the eject button 19, and an E-ring is fitted into the eject rod 21 to prevent it from coming off. The tip of the eject rod 21 has a conical surface of about 45 degrees.

When the film mount is inserted into the insertion opening 7 and pushed in the direction opposite to the arrow A direction, the film mount comes into contact with the eject plate 22 attached to the carriage portion. When the film mount is further pushed in, the eject plate 22 is locked by the locking portion 24b of the locking plate 24 as shown in FIG. 12, and the film mount is set in the carriage portion. Since the eject spring 23 is biased in the direction of arrow A, it is in a charged state. The image reading operation is performed in this state.

The carriage portion of the film mount storage portion always returns to the carriage return position I shown in FIG. 8 when the film is inserted and after the image data is read. When the carriage is present at the carriage return position I, the eject button 19
When is pressed, the conical surface of the eject rod 21 at about 45 degrees is shown in Fig. 1.
If the eject button 19 is further pressed while hitting the approximately 45-degree surface 24a of the locking plate 24 in the direction of arrow C of 1, the portion (locking portion 24b) of the locking plate 24 that locks the eject plate 22 is With the fulcrum 16e of the rack carriage 16 as the center of rotation, the rack carriage 16 is rotated and retracted in a direction away from the rack carriage 16 (direction of arrow B in FIGS. 11 and 12) (see FIGS. 6, 12, and 13). The eject plate 22 is disengaged from the engaging portion 24b and is movable in the film mount ejection direction (the direction of arrow A in FIG. 11), and the film mount is ejected by the spring force of the eject spring 23, and the film mount is taken out. be able to.

In the auto eject, the carriage portion of the film mount storage portion is rotated to the film mount eject position II by rotating the stepping motor 11 so that the conical surface of the eject rod 21 at about 45 degrees is in the direction of arrow C in FIG. From the locking plate 24 about 45 degrees surface 2
4a, the portion of the locking plate 24 that locks the eject plate 22 is rotated and retracted in the direction away from the rack carriage 16 with the fulcrum 16e of the rack carriage 16 as the center of rotation (FIGS. 6, 12, and 13). reference). The eject plate 22 is disengaged and movable in the film mount ejecting direction (the direction of arrow A in FIG. 11), and the film mount is ejected by the spring force of the eject spring 23, so that the film mount can be ejected automatically. It will be possible.

Next, another embodiment of the film mount take-out mechanism is shown in FIG. As shown in FIG. 10, the front panel 3 has a film mount insertion opening 7 which is vertically hollowed to a position where the film mount can be picked up with a finger. Since the carriage portion of the film mount storage portion always returns to the carriage return position III when the film is inserted and after the image data is read, the shape of the film mount insertion opening 7 of the front panel 3 is changed as shown in the figure. By pulling the front panel deeper than the tip position of the carriage portion at the position, the film mount can be taken out with a finger without the eject mechanism. By making the gouging shape of the front panel conform to the shape of the finger, the gouging shape can be made smaller and the internal space can be effectively used. Also, as shown in FIG. 10, due to the internal space, even if the insertion opening 7 cannot be gotten in both the upper and lower parts,
If one of the upper and lower sides is gouged to the back and the other is gotten to the position where the film mount touches, the film mount can be easily taken out with a finger.

As described in the above embodiment, when the eject rod 21 reciprocates in the direction of the guide bar 17, the eject rod 21 engages with the engaging plate 24 to engage the engaging plate 2.
Since the engagement between the film mount and the locking plate 24 is released by rotating 4, the slide mount can be ejected at any time other than the scanning operation, and the power is not turned on. However, the ejection operation can be performed, and the ejection of the slide mount can be surely prohibited during the scanning operation.

[0030]

As described above, according to the present invention, when the locking release means reciprocates in the reciprocating direction of the reciprocating movement guiding means, the locking release means engages with the locking means and locks. By rotating the means, the engagement between the document and the locking means is released, so the slide mount can be ejected at any time other than the scanning operation, and even when the power is not turned on. It is possible to operate, and it is possible to surely prohibit the ejection of the slide mount during the scanning operation.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an image input device according to the present invention.

2 is a cross-sectional view showing an embodiment of the image input device according to the present invention, and is a cross-sectional view taken along the line AA of FIG.

3 is a cross-sectional view showing an embodiment of the image input device according to the present invention, and is a cross-sectional view taken along the line BB of FIG.

4 is a cross-sectional view showing an embodiment of the image input device according to the present invention, which is a cross-sectional view taken along the line CC of FIG.

5 is a cross-sectional view showing an embodiment of the image input device according to the present invention, and is a cross-sectional view taken along the line DD of FIG.

6 is a cross-sectional view showing an embodiment of the image input device according to the present invention, which is a cross-sectional view taken along the line EE of FIG.

7 is a cross-sectional view showing an embodiment of the image input device according to the present invention, which is a cross-sectional view taken along the line FF of FIG.

8 is a cross-sectional view showing an embodiment of the image input device according to the present invention, which is a cross-sectional view taken along the line GG of FIG.

9 is a sectional view showing an embodiment of the image input device according to the present invention, which is a sectional view taken along line HH of FIG.

FIG. 10 is a cross-sectional view showing another embodiment of the film mount take-out mechanism in the embodiment of the image input apparatus according to the present invention.

FIG. 11 is a perspective view showing an embodiment of an image input device according to the present invention.

FIG. 12 is a front view showing an embodiment of the image input device according to the present invention.

FIG. 13 is a front view showing an embodiment of the image input device according to the present invention.

[Explanation of symbols]

 1 Body 2 Top Cover 3 Front Panel 4 Mechanical Body 5 Main Board 7 Insertion Portion 11 Stepping Motor 12 Motor Mounting Plate 13 Motor Gear 14 Pinion Gear 14a Reduction Gear 15 Carriage 16 Rack Carriage 16e Support 16f Support 16g Projection 17 Guide Bar 18 Spring 19 Eject button 20 Button spring 21 Eject rod 22 Eject plate 23 Eject spring 24 Locking plate 24a Engaging part 24b Engaging part 24c Through hole 25 Focus block 27 Focus cam

Claims (4)

[Claims] 1. A light irradiation optical system for irradiating an original with reading light, a reading unit for forming an image of the original by forming transmitted light or reflected light of the original, and an original moving while holding the original. Holding means, reciprocating movement guiding means for guiding the reciprocating movement of the document holding means, document urging means for urging the document held in the document holding means in the discharge direction, and urging means for the document urging means. A locking means for engaging the biased original to fix the original to the original holding means; and a locking releasing means for releasing the engagement between the original and the locking means. The stop release means is a rod-shaped member that reciprocates in the reciprocating direction of the reciprocating guide means, and the locking means is
A plate-shaped member that rotates in a direction perpendicular to the reciprocating movement direction of the reciprocating movement guiding means, and engages with the locking means and rotates the locking means when the locking releasing means reciprocates. The image input device is characterized by releasing the engagement between the document and the locking means. 2. The original document and the locking means, wherein the locking means has an inclined portion, and when the locking releasing means reciprocates, the locking means abuts against the inclined portion to rotate the locking means. The image input device according to claim 1, wherein the engagement with the means is released. 3. The reading means when the lock releasing means has a predetermined length and the document holding means exists in a range where the lock releasing means does not engage with the lock means even when the lock releasing means reciprocates. The image input device according to claim 1, wherein the image reading device reads the image of the document. 4. When the original document holding means reciprocates while the unlocking means is in a stopped state, the unlocking means abuts on the inclined portion and rotates the locking means, whereby the original document is rotated. The image input device according to claim 1, wherein the engagement between the locking means and the locking means is released.