JPH10155065A - Image input device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the image input device whose cost is reduced through the simplified components and miniaturized input device. SOLUTION: In the case of reading an image of a photo print, the photo print is inserted from a photo print insert port 52 and carried by drive rollers 56A, 56B and retainer rollers 56B, 58B. Then a lighting lamp 71 lights the photo print and an image light reflected in the photo print is reflected in mirrors 74A, 74B, 74C and a lens 72 is used to form the image on a CCD line sensor 70. On the other hand, in the case of reading an image of a developed photo film, a transmission original holder 12 to which the photo film is loaded is inserted from the film holder insertion port 54, and a rack 19 and a pinion 58D are used to carry the transmission original holder 12. Then the lighting lamp 71 lights the photo film and the image light transmitted through the photo film is reflected in a mirror 76 and its image is formed on the CCD line sensor 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input apparatus, and more particularly, to an image input apparatus that captures an image of a reflection original or a transparent original using the same line sensor.

[0002]

2. Description of the Related Art Conventionally, there has been known an image input device which captures a reflection document or a transmission document by a line sensor and inputs an image of the document. JP-A-7-23180 discloses a first optical system for reading a reflective original and a second optical system for reading a transparent original.
There is described an image input device which has a first optical system and a first optical system, and reads a reflective original and a transparent original by the same line sensor.

[0003]

However, the image input apparatus described in the above-mentioned Japanese Patent Application Laid-Open No. Hei 7-23180 has a problem that when a reflective original and a transmissive original are placed at dedicated reading positions and the reflective original is read. When an optical system including a line sensor is scanned and a transparent original is read, the transparent original is scanned. For this reason, there has been a problem that the number of parts increases and the structure becomes complicated and large.

The present invention has been made in view of such circumstances, and in an image input apparatus for reading a reflection original and a transmission original, an image input apparatus for reducing costs by simplifying the components and reducing the size of the apparatus. The purpose is to provide.

[0005]

In order to achieve the above object, the present invention provides a first transporting means for transporting a reflective original, and a second transporting means for transporting a transparent original different in form from the reflective original. A line sensor for outputting an electric signal corresponding to image light incident on a light receiving surface, and illuminating a reflection original conveyed by the first conveying means, and applying the image light reflected on the reflection original to the line A first optical system that forms an image on a light receiving surface of a sensor, and a transmissive original conveyed by the second conveying means are illuminated, and image light transmitted through the reflective original is formed on a light receiving surface of the line sensor. It is characterized by comprising: a second optical system for forming an image; and switching means for switching the image light formed by the first or second optical system to the line sensor for incidence.

According to the present invention, the reflective original is transported by the first transporting means, the transparent original having a different form from that of the reflective original is transported by the second transporting means, and the reflective original or the transparent original is respectively transported by the first transporting means. Or the second optical system. When the image light of the reflection original is imaged, the image light formed by the first optical system is caused to enter the light receiving surface of the line sensor by the switching unit, and the image light of the transmission original is imaged. Is the second
The image light formed by the optical system is incident on the light receiving surface of the line sensor.

Thus, the optical system for forming the image light of the reflection document and the transmission document on the light receiving surface of the line sensor is fixed, and the image of the reflection document and the transmission document can be read by one line sensor. The components can be simplified and the size of the device can be reduced.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of an image input device according to the present invention will be described below in detail with reference to the accompanying drawings. An image input device according to the present invention is connected to an image processing device such as a personal computer or a printer, for example, to input an image of a transparent document or a reflective document, and to transfer the input image data to the image processing device or the printer. It is.

The following image input apparatus is described as an apparatus for reading a negative image of a 35 mm negative film as a transparent original and for reading a photograph (photograph print) printed on L-size photographic paper as a reflective original. . When a negative film image is input to the image input device, a negative film 8 (a negative film 8 is, for example, a series of negative film pieces composed of six frame images) as shown in FIG. Loaded into the image holder 12 and inserted into the image input device.

The transparent document holder 12 is made of an opaque member, and is provided at a predetermined interval with a window 2 facing the opposite side.
0, 20,... Are provided. Then, each frame image of the negative film 8 is aligned with each window 20, 20,... Of the transparent document holder 12, and the negative film 8 is sandwiched. Also, a frame detection hole 18 is provided at a predetermined distance from the tip of each window 20.
18,... Are drilled. The device side has this frame detection hole 1
The timing for reading the frame image in each window 20 is controlled by detecting 8, 18,.

As shown in FIG. 1, a rack 19 is provided above the transparent document holder 12. The rack 19 is such that the transparent document holder 12 can be reliably transported by a pinion. FIG. 2 is an external view showing an embodiment of the image input device according to the present invention. As shown in the figure, the image input device 50 has a photo print insertion slot 52 and a film holder insertion slot 54. When an image of a photo print (reflection original) is input, the photo print is converted to a photo print. Insert from the insertion slot 52. To input an image of a negative film (transparent original) loaded in the transparent original holder 12, the transparent original holder 12 is inserted through the film holder insertion opening 54.

The input photographic print or negative film image data is transferred to an image processing apparatus such as a personal computer via a cable 55, for example. FIG. 3 is a configuration diagram showing the structure of the image input device according to the present invention. The image input device shown in FIG. 3 transports a photographic print (indicated by reference numeral 49 in FIG. 4) inserted from the photographic print insertion slot 52 to a photographing position (a position indicated by a two-dot broken line 73 in FIG. 5). System, a transport system for transporting the transparent document holder 12 inserted from the film holder insertion opening 54 to a photographing position (a position indicated by a two-dot broken line 75 in FIG. 7), and a photographic print transported to each photographing position. Or an imaging unit for photographing a negative film.

The photographic print transport system includes drive rollers 56A, 56A, 58 for carrying the photographic prints to and from the shooting position.
A, 58A and these drive rollers 56A, 56A, 58
A, pressing roller 56B provided opposite to 58A,
56B, 58B, and 58B. Drive roller 5
6A and 56A are fixed to the same rotating shaft 56, and the drive rollers 58A and 58A are fixed to the same rotating shaft 58. Gears 56C, 58C are fixed to one ends of the rotating shafts 56, 58, and the gears 56C, 58C are engaged with a gear 60 rotated by a drive motor (not shown).

The pressing rollers 56B, 56B, 58
B and 58B are urged downward by a spring (not shown). Thereby, the driving rollers 56A, 56A, 58
A, 58A and pressing rollers 56B, 56B, 58B, 5
8B, the drive motor rotates and the gear 60 rotates, and the drive roller 56
A, 56A, 58A, 58A rotate in the same direction, and the photographic print is conveyed.

A photo print detection sensor 62 is provided near the photo print insertion slot 52. The photo print detection sensor 62 is provided with, for example, a light emitting element and a light receiving element opposed to each other above and below a transport path of a photo print, receives light emitted from the light emitting element by the light receiving element, and indicates the presence or absence of this light reception. Outputs a detection signal. Based on the detection signal, the leading end of the photographic print is detected to detect that the photographic print has been inserted from the photographic print insertion slot 52.

The transport system of the transparent document holder 12 has a pinion 58D fixed to the rotation shaft 58, and the pinion 58D is mounted on the rack 1 of the transparent document holder 12.
9 is provided at a position where it passes. Although not shown, a guide roller is provided below the transport path of the transparent document holder 12. When the motor rotates and the gear 60 rotates, the pinion 58D rotates, and the pinion 58D meshes with the rack 19 of the transparent document holder 12 to convey the transparent document holder 12.

A holder detection sensor 64 is provided in the vicinity of the film holder insertion opening 54. The holder detection sensor 64 is a photo print detection sensor 62.
Similarly, for example, a light-emitting element and a light-receiving element are provided above and below the transport path of the transparent document holder 12 so as to face each other, and a detection signal indicating the presence or absence of light reception of the light-receiving element is output. Based on this detection signal, the tip of the transparent document holder 12 is detected to detect that the transparent document holder 12 has been inserted from the film holder insertion opening 54.

The holder detection sensor 64 is
A frame detecting hole 18 of the transparent document holder 12 is provided so as to be detectable (for example, by providing a light emitting element and a light receiving element at the passage position of the frame detecting hole 18, a frame detecting hole 18 is provided depending on whether the light receiving element receives light. 18 can be detected.), And the position of the frame image of the negative film loaded in each window 20 is detected by detecting the frame detection hole 18 of the transparent document holder 12.

Further, an erroneous insertion prevention lever 66 is provided between the photo print insertion slot 52 and the film holder insertion slot 54 so as to rotate so that each of the insertion slots can be shielded. The erroneous insertion prevention lever 66 is rotated by the drive motor 67, and is rotated toward the film holder insertion opening 54 when a photographic print is inserted (when the photographic print detection sensor 62 detects the insertion of the photographic print). And
The film holder insertion opening 54 is shielded. When the transparent document holder 12 is inserted (when the insertion of the transparent document holder 12 is detected by the holder detection sensor 64), the transparent document holder 12 is rotated toward the photo print insertion port 52 to shield the photo print insertion port 52. . This prevents another document from being inserted from the other insertion port when a document is inserted from one of the insertion ports.

The image pickup section has a CCD line sensor 70, and sequentially forms image light of one line at a photographing position of a document traveling on a transport path on the CCD line sensor 70 by a lens 72. When an image of a photographic print is input, the photographic print is illuminated by an illumination lamp 71 provided between the photographic print conveyance path and the conveyance path of the transparent document holder 12.
The image light reflected at the photographing position 73 of the photographic print indicated by the two-dot dashed line in FIG. 3 is sequentially reflected by mirrors 74A, 74B, and 74C.
Image on 0.

On the other hand, when the image of the negative film loaded in the transparent document holder 12 is input, the negative film is illuminated by the illumination lamp 71 and transmitted through the negative film shooting position 75 shown by the two-dot broken line in FIG. Mirror 7
The light is reflected at 6 and forms an image on the CCD line sensor 70 via the lens 72. The mirror 76 has a drive motor 77
When a photo print image is input, the drive motor 77 rotates the reflection surface to a horizontal position, and retracts from an optical path through which the image light of the photo print is guided.

Since a photographic print as a reflection original has a larger image size than a negative film as a transmission original,
The optical path length of the image light of the photographic print is configured to be longer than the optical path length of the image light of the negative film so that the imaging size is equal to that of the negative film. For this reason, the position of the lens 72 is moved by the drive motor 79 between the image input of the photographic print and the image input of the negative film, and the focus is adjusted so that the image light of each document is focused on the CCD line sensor. Is performed.

FIG. 4 is a circuit diagram of the image input device. As shown in FIG.
The CPU 200 inputs detection signals from the photo print detection sensor 62 and the holder detection sensor 64, and drives the respective drive motors,
The drive rollers 56A and 58A, the pinion 58D, the erroneous insertion prevention lever 66, the lens 72, and the mirror 76 are controlled.

The image signal input from the CCD line sensor 70 is subjected to various image processing (color temperature adjustment, light quantity adjustment, shading correction,
The image data is recorded as image data in the frame memory 204. Then, the frame memory 204
Is output to an external image processing device such as a personal computer via a data transfer circuit 206. CPU
200 controls the operation of these circuits.

Next, the operation of the CPU 200 of the image input apparatus will be described with reference to the flowcharts of FIGS. First, a photographic print or transparent document holder 12
Is inserted from each of the insertion slots (the insertion slot 52 for the photo print or the insertion slot 54 for the film holder), the CPU 200
Detects the leading end of the photographic print or transparent document holder 12 by the photographic print detection sensor 62 or the holder detection sensor 64 provided near each insertion opening.

Thus, the type of the inserted original (the inserted original is a photo print or a transparent original holder 12).
To determine whether the film is loaded in the negative film). And
A program operation corresponding to the type of the inserted document is executed. Hereinafter, the operation of the CPU 200 will be described separately for a case where a photographic print is inserted and a case where the transparent document holder 12 is inserted.

FIG. 5 shows C when a photographic print is inserted.
5 is a flowchart illustrating an operation of the PU 200. When a photo print is inserted from the photo print insertion slot 52 (step S10), the CPU 200 detects the leading end of the photo print by the photo print detection sensor 62 (step S12). Photo print detection sensor 62
When the leading end of the photographic print is detected, the erroneous insertion prevention lever 66 is rotated by the drive motor 67 toward the film holder insertion opening 54 to shield the film holder insertion opening 54 (step S14). Further, the mirror 76 is driven by the drive motor 77 to retract the mirror 76 from the optical path through which the image light of the photographic print is guided (step S16), and the lens 72 is driven by the drive motor 79 to move the lens 72 to the photographic print. The focus position is set at the time of image input (step S18).

When the photographic print detection sensor 62 detects the leading end of the photographic print, the CPU 200 rotates the gear 60 (step S20) and rotates the driving rollers 56A, 56A, 58A, 58A. As a result, the photographic print is driven by the drive rollers 56A, 56A,
8A, 58A and pressing rollers 56B, 56B, 58B,
58B.

When the photographic print is conveyed, the CPU
200 inputs an image signal from the CCD line sensor 70 via the image signal processing circuit 202, and detects the leading end of the photographic print based on the image signal input from the image signal processing circuit 202 (step S22). Detect the beginning). When the leading end of the photographic print is detected based on the image signal from the CCD line sensor 70, the capture of the image is started (step S24). That is, the image of the photographic print is sequentially stored in the frame memory 20 for each line.
Record in 4.

When the reading of the image of the photo print is completed, the CPU 200 detects the rear end of the photo print based on the image signal from the CCD line sensor 70 (step S26). When the trailing edge of the photo print is detected,
U200 shifts to a photo print discharging operation (step S).
28), the photographic print is discharged from the photographic print discharge port on the back of the image input device, and when a predetermined time (time from the start of the discharge operation to the discharge of the photographic print) has elapsed since the start of the discharge operation, the CPU 200 causes The rotation of the gear 60 is stopped, and the driving rollers 56A, 56A, 58A, 58
A is stopped (step S30).

FIG. 6 is a flowchart showing the operation of the CPU 200 when the transparent document holder 12 loaded with the negative film is inserted. Transparency document holder 12
Is inserted from the film holder insertion opening 54 (step S40), the CPU 200 detects the leading end of the transparent document holder 12 by the holder detection sensor 64 (step S42). Holder detection sensor 64
When the leading end of the transparent document holder 12 is detected by
The drive motor 67 rotates the erroneous insertion prevention lever 66 toward the photo print insertion slot 52 to shield the photo print insertion slot 52 (step S44). Further, the mirror 76 is driven by the drive motor 77 to set the mirror 76 so as to guide the image light of the negative film to the CCD line sensor 70 (step S46), and the lens 72 is driven by the drive motor 79 to drive the lens 72. The focus position is set when the negative film image is input (step S48).

Further, the CPU 200 causes the image signal processing circuit 202 to perform signal adjustment such as color temperature, illumination light amount, shading correction and the like before taking in the image (step S5).
0). The CPU 200 also controls the holder detection sensor 6
When the leading end of the transparent document holder 12 is detected by the step 4, the gear 60 is rotated, and the pinion 58D is rotated (step S52). As a result, the rack 19 of the transparent document holder 12 engages with the pinion 58D, and the transmission of the transparent document holder 12 starts by the pinion 58D.

When the transparent original holder 12 is transported,
Next, the CPU 200 detects the top frame detection hole 18 of the transparent document holder 12 by the holder detection sensor 64 (step S54). Thereby, it is recognized that the rack 19 of the transparent document holder 12 is engaged with the pinion 58D, and the transparent document holder 12 is surely started to be conveyed by the pinion 58D, and then the image capturing control is started (step S56). ).

When the leading frame detecting hole 18 of the transparent document holder 12 is detected and it is confirmed that the transparent document holder 12 has been conveyed by the pinion 58D, the CPU 200 executes a frame search or a pre-processing by system control. Execute image capture such as scanning. At this time, the frame detection hole 18 corresponding to each frame is detected by the holder detection sensor 64, and the start and end of capturing each frame image are controlled based on the detected position.

When the image capture by the system control is completed and an instruction to discharge the transparent document holder 12 is issued (step S58), the gear 60 is rotated (step S60), and the transparent document holder 12 is moved to the image input device. And the transparent document holder 12 is discharged from the holder discharge port. At this time, the CPU 200 detects the frame detection hole 1 at the rear end by the holder detection sensor 64.
8 is detected (step S62), and after a lapse of a predetermined time (the time from the detection of the frame detection hole 18 at the rear end to the discharge of the transparent document holder 12), the rotation of the gear 60 is stopped. , Drive rollers 56A, 56A, 58A,
58A is stopped (step S64).

As described above, in the above embodiment, the illumination lamp 71 is provided with the reflection cover 150 as shown in FIG.
The amount of illumination light may be increased. In this case, the direction of the reflective cover 150 is switched between illuminating a photographic print and illuminating a negative film. Also, as shown in FIG. 8, the reflection cover 150 is set so that the light amount of the illumination lamp 71 increases on the photo print side.
And a notch 1 in the center of the reflective cover 150.
52 may be provided to illuminate the negative film from the notch 152.

In this case, as shown in FIG. 9A, the intensity distribution of the irradiation light in the photographic print when there is no notch 152 is such that the reflected light by the reflection cover is equal to the irradiation light emitted from the notch 152. Fig. 9
As shown in (B), the intensity distribution has a reduced amount of light at the center, and shading can be improved. Further, in the above embodiment, the lens for condensing the image light of the photographic print and the negative film on the CCD line sensor 70 (the lens 72) is common, and the illumination lamp for illuminating the photographic print and the negative film is common (the illumination). Although the lamp 71) is provided, these lenses and illumination lamps may be provided separately for the photographic print and the negative film, for example, as shown in the side sectional view of FIG.

As shown in FIG. 10, the photographic print inserted from the photographic print insertion port 120 is inserted into the illumination lamp 100.
And illuminates the image light reflected by the photo print with a mirror 10
An image is formed on the CCD line sensor 116 by the lens 108 via 2, 104 and 106. Further, the negative film attached to the transparent original holder inserted through the holder insertion opening 122 is illuminated by the illumination lamp 110, and the image light transmitted through the negative film is transmitted to the CCD line sensor 116 via the mirror 114 by the lens 112 via the mirror 114. Form an image.

When inputting an image of a negative film,
The mirror 114 is set as shown in the figure to make the image light of the negative film incident on the CCD line sensor 116, and when the image of the photographic print is input, the mirror 114 is set to the image of the photographic print as shown by a dotted line. Evacuates the optical path through which the light is guided and converts the image light of the photo print into a CCD
The light enters the line sensor 116.

As shown in FIG. 10, the transparent original holder 12 may be transported by rollers. Further, in the above embodiment, the imaging magnification is not switched according to the size of the reflection original or the transmission original, but the image of the reflection original or the transmission original of an arbitrary size is input at the imaging magnification corresponding to the size. A zoom lens may be used for the lenses 72 and 108 so that the zoom magnification can be switched according to the size of the document.

Further, as shown in FIG.
The zoom function may be provided by making the mirror 106 movable and making the optical path length of the image light of the photographic print variable. In this case, make the lens 108 movable,
The focus position of the lens 108 is adjusted according to the changed optical path length. Further, in the above-described embodiment, an example is shown in which a negative film image is input as a transparent original. However, the present invention is not limited to this, and a positive film image may be input, and a negative film and a positive film may be input. You may make it input both images.

When the transparent document holder 12 is conveyed by a pinion as in the above embodiment, as shown in FIG. 12, the teeth of the rack 19 at the tip of the transparent document holder 12 are fixed to the circumference of a specific radius. The transparent document holder 12 can be inserted into the pinion 58D without contacting the teeth by forming it so as to escape in the direction.

[0043]

As described above, according to the image input apparatus of the present invention, the optical system for imaging the image light of the reflection original and the transmission original on the imaging surface of the line sensor is fixed.
With a simple configuration, it is possible to read the image of the reflection original and the image of the transmission original by one line sensor, and it is possible to simplify the components and downsize the apparatus.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an embodiment of a transparent document holder for loading a negative film.

FIG. 2 is an external view showing an embodiment of an image input device according to the present invention.

FIG. 3 is a configuration diagram showing a structure of an image input device according to the present invention.

FIG. 4 is a circuit configuration diagram of an image input device according to the present invention.

FIG. 5 is a flowchart showing an operation of the image input device according to the present invention.

FIG. 6 is a flowchart showing the operation of the image input device according to the present invention.

FIG. 7 is a perspective view showing an example in which a reflection cover is attached to an illumination lamp.

FIG. 8 is a perspective view showing an example in which a reflection cover is attached to an illumination lamp.

FIG. 9 is a diagram showing a state of shading by the illumination lamp in FIG. 8;

FIG. 10 is a configuration diagram showing another embodiment of the image input device according to the present invention.

FIG. 11 is a configuration diagram showing another embodiment of the image input device according to the present invention.

FIG. 12 is a diagram illustrating an improved example of a leading end of a rack formed on a transparent document holder.

[Explanation of symbols]

 Reference Signs List 8 ... Negative film 10 ... Slide mount 12 ... Transparent document holder 18 ... Frame detection hole 19 ... Rack 20 ... Window 49 ... Photo print 50 ... Image input device 52 ... Photo print insertion 54 ... Film holder insertion 56A ... Driving roller 56B ... Pressing roller 58A ... Driving roller 58B ... Pressing roller 58D ... Pinion 62 ... Photo print detection sensor 64 ... Holder detection sensor 66 ... Incorrect insertion prevention lever 70 ... CCD line sensor 71 ... Illumination lamp 72 ... Lens 74A, 74B , 74C… Mirror 76… Mirror

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI H04N 1/00 108 H04N 1/00 108Q 1/04 1/04 101 101 5/253 1/10 1/04 C 1/107 1 / 10 5/253 1/12 103

Claims (11)

[Claims] A first transport unit for transporting a reflective original; a second transport unit for transporting a transparent original having a different form from the reflective original; and outputting an electric signal corresponding to image light incident on a light receiving surface. A first optical system that illuminates a reflection original conveyed by the first conveyance unit, and forms an image light reflected on the reflection original on a light receiving surface of the line sensor; A second optical system that illuminates a transmissive document conveyed by the second conveying means and forms an image light transmitted through the reflective document on a light receiving surface of the line sensor; and the first or second optical system. Switching means for switching the image light formed by the optical system to the line sensor and causing the light to enter the line sensor. 2. An illumination lamp for illuminating the reflection document and the transmission document is provided between a conveyance path of the reflection document and a conveyance path of the transmission document, and the reflection document and the transmission document are transmitted by one illumination lamp. 2. The image input device according to claim 1, wherein the document is illuminated. 3. A reflection cover for reflecting a part of the light emitted from the illumination lamp, and the reflection direction of the reflection cover is switched to the reflection document or the transmission document to illuminate the reflection document or the transmission document. 3. The image input device according to claim 2, wherein the intensity of the generated light is increased. 4. A reflection cover for reflecting a part of the light emitted from the illumination lamp so that the light for illuminating the reflection original is increased, and a notch is provided in a part of the reflection cover to provide a notch. 3. The image input apparatus according to claim 2, wherein the transparent original is illuminated from a notch. 5. A mirror for making an optical axis of said first optical system coincide with an optical axis of said second optical system, and said switching means forms an image by said first or second optical system by switching said mirror. 2. The image input device according to claim 1, wherein the image input is switched to the line sensor and made incident. 6. A lens for imaging the image light guided by the first and second optical systems on a line sensor, at a position where the optical axes of the first and second optical systems coincide with each other. The switching means is arranged to switch the mirror and to switch the focus of the lens, and to switch the image light guided by the first optical system or the second optical system on the line sensor. 6. The image input device according to claim 5, wherein the image is formed on the image input device. 7. An image input apparatus according to claim 1, wherein said first and second transport means have one power source. 8. An image input apparatus according to claim 1, wherein said transparent original is a developed photographic film, and said second conveying means conveys a holder on which said photographic film is mounted. 9. The apparatus according to claim 8, wherein said second transport means transports said holder by driving a pinion by meshing a pinion with a rack provided on said holder.
Image input device. 10. An image input apparatus according to claim 1, wherein the optical path length of said first and second optical systems is made variable, and enlargement / reduction is performed by changing the optical path length. 11. An image input apparatus according to claim 10, wherein a focus adjustment of said first and second optical systems is performed according to a change in said optical path length.