JPH0980635A - Photographic printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light source having no color unevenness, while reducing the heat generated and the power consumed, enhancing a dustproofing property, and eliminating the need for driving forces. SOLUTION: A dichromic mirror 28A for reflecting light of red components from an R-LED 26 and a dichromic mirror 28B for reflecting light of green components from a G-LED 27 are arranged in order on the downstream side along the direction of propagation of light from a B-LED 25. The optical axis of the red light emitted from the R-LED 26 and that of the green light emitted from the G-LED 27 are both curved to coincide with an optical axis X of exposure. Therefore, the light emitted from the B-LED 25, the R-LED 26, and the G-LED 27 is applied to a liquid-crystal panel 31 which displays an image. An exposure lens 35 is placed on the downstream side of the liquid-crystal panel 31, so that the image displayed on the liquid-crystal panel 31 is formed on photographic printing paper 54.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic printer, and more particularly to a photographic printer that displays an image on a liquid crystal panel and exposes the image on a photosensitive material.

[0002]

2. Description of the Related Art Image data of each frame of a negative film read by a scanner is stored in an image memory, and image data of a frame to be printed is selected from the image data of each frame of the negative film stored in this image memory. 2. Description of the Related Art A so-called liquid crystal photographic printer has been proposed which reads out and displays on a liquid crystal panel and exposes the displayed image on a photographic paper to process the print to produce a print.

According to such a liquid crystal photographic printer, indexes are arranged so that each frame is arranged in a matrix and printed in a reduced size so that it is possible to easily retrieve what kind of photograph is taken on one developed negative film. When making a print, image data for several frames can be read from the image memory and displayed on the liquid crystal panel, and the displayed images for several frames can be exposed and processed on photographic paper.

Further, according to such a liquid crystal photographic printer, even when producing a print of a predetermined stretched size,
Display the entire image of the frame to be printed on the LCD panel,
The displayed image can be imaged on the photographic paper at a predetermined magnification and exposed to the photographic paper.

[0005]

However, in such a liquid crystal photographic printer, when a light bulb such as a halogen lamp is used as a light source for irradiating the liquid crystal panel with a light beam, the heat generation amount and the power consumption amount increase, As a result of increasing the size of peripheral equipment such as a cooling device for cooling the light source, the size of the entire light source device also increases. Further, when a fan is used as the cooling device, the air inside the light source device is agitated by the fan, so that dust is apt to fly, and the outside air flows in, so it is difficult to prevent dust inside the light source device.

On the other hand, instead of using a light bulb such as a halogen lamp, a light emitting diode (hereinafter appropriately referred to as an LED)
It is conceivable to use LEDs as the light source, but when forming a color image using the LEDs as the light source, it is necessary to arrange, for example, LEDs of three colors on the same optical axis to prevent color unevenness and the like. Occurs. In such a case, it is necessary to move and switch the LED by the driving force of a motor or the like.

On the other hand, in the case of using a light source of LEDs in a liquid crystal printer, in order to increase the amount of light, it is conceivable to increase the density of the LEDs arranged in a range that contributes to image formation on the liquid crystal panel. However, in a color photographic printer that requires, for example, three-color LEDs, it is necessary to increase the number of LEDs while arranging these three-color LEDs in a well-balanced manner so that color unevenness does not occur. L
It is difficult to increase the density of LEDs by increasing only the number of EDs.

In consideration of the above facts, the present invention is low in heat generation and power consumption, has high dust resistance, and does not require a driving force.
A first object of the present invention is to provide a photographic printer having a light source with no color unevenness. It is a second object of the present invention to provide a photographic printer that can increase the density of LEDs of a specific color without affecting other LEDs.

[0009]

In order to achieve the above object, a photographic printer according to claim 1 has a plurality of liquid crystal panels capable of displaying an image to be exposed on a photosensitive material and a plurality of light emitting wavelengths different from each other. The light emitting diodes of different types are arranged between the liquid crystal panel and the light emitting diode, and the light beams from the plurality of types of light emitting diodes are coaxially arranged through the liquid crystal panel by selectively transmitting and reflecting according to the wavelength of light. And a dichroic mirror for sending to the photosensitive material side.

In order to achieve the above object, a photographic printer according to a second aspect of the present invention comprises a liquid crystal panel capable of displaying an image to be exposed on a photosensitive material, and a plurality of types of light emitting diodes having mutually different emission wavelengths. And a switching unit that switches the light emitting diode that irradiates the liquid crystal panel with light rays from among a plurality of types of light emitting diodes.

In order to achieve the above object, a photographic printer according to a third aspect of the present invention comprises a liquid crystal panel capable of displaying an image to be exposed on a photosensitive material, and a plurality of types of light emitting diodes having mutually different emission wavelengths. It is movably arranged between the liquid crystal panel and multiple types of light emitting diodes, and bends the light beam from any one of the multiple types of light emitting diodes to align it coaxially with the light beams of other light emitting diodes. And a movable mirror that can be positioned to feed to the photosensitive material side through a liquid crystal panel.

In order to achieve the above object, a photographic printer according to a fourth aspect of the present invention comprises a liquid crystal panel capable of displaying an image to be exposed on a photosensitive material, and a plurality of types of light emitting diodes having mutually different emission wavelengths. A light source switching device in which a plurality of types of light emitting diodes are movably installed, and a plurality of types of light emitting diodes can be selectively arranged on the same optical axis by moving the plurality of types of light emitting diodes.

The operation of the photographic printer according to claim 1 will be described below. Multiple types of light-emitting diodes emit light of different wavelengths, and a dichroic mirror selectively transmits and reflects light according to wavelengths, aligns light rays from multiple types of light-emitting diodes on the same axis, and exposes the photosensitive material. The exposure light is sent to the photosensitive material side through the liquid crystal panel capable of displaying an image to be displayed.

Therefore, since the light emitting diode is used as the light source, heat generation and power consumption are reduced, and a cooling device for cooling the light source is not required, and the entire device can be miniaturized. Along with this, there is no need to use a fan as a cooling device, which facilitates dust prevention inside the device.

Further, since the dichroic mirror arranges the light rays from a plurality of types of light emitting diodes coaxially, it is not necessary to arrange a plurality of types of light emitting diodes on the same optical axis, and the light emitting diodes can be used as a power source for a motor or the like. There is no need to move and switch. Therefore,
Since there is no moving part for moving the light emitting diode, the failure of the photo printer is reduced.

On the other hand, for example, if a plurality of light emitting diodes of each color are arranged, the light quantity can be easily increased / decreased only by selectively lighting these light emitting diodes.

The operation of the photographic printer according to claim 2 will be described below. The plurality of types of light emitting diodes emit light having different wavelengths from each other, and the switching unit switches the light emitting diodes for irradiating the liquid crystal panel with light rays among the plurality of types of light emitting diodes. Then, the switched light beam from the light emitting diode is transmitted to the photosensitive material side through the liquid crystal panel capable of displaying an image to be exposed on the photosensitive material.

Therefore, since the switching means switches the light emitting diodes for irradiating the liquid crystal panel with light rays among the plurality of types of light emitting diodes, it becomes possible to disperse the light emitting diodes. As a result, it is possible to arrange a large number of light emitting diodes of each kind in a well-balanced manner so as not to cause color unevenness, increase the number of light emitting diodes, and increase the density.

The operation of the photographic printer according to claim 3 will be described below. Multiple types of light emitting diodes emit light of different wavelengths, the movable mirror moves, and a light beam from one of the multiple types of light emitting diodes is bent to become a light beam of another light emitting diode. Position it so that it is coaxially aligned and sent to the photosensitive material side through the liquid crystal panel. Therefore, the movable mirror switches the light emitting diode that irradiates the liquid crystal panel with light rays among a plurality of types of light emitting diodes, and the light ray from the light emitting diode thus switched can display an image to be exposed on the photosensitive material. Is transmitted to the photosensitive material side.

Therefore, similarly to the second aspect, since the movable mirror switches the light emitting diodes for irradiating the liquid crystal panel with light rays among a plurality of types of light emitting diodes, it becomes possible to dispose the light emitting diodes in a dispersed manner. . As a result, it is possible to arrange a large number of light emitting diodes of each kind in a well-balanced manner so as not to cause color unevenness, increase the number of light emitting diodes, and increase the density.

The operation of the photographic printer according to claim 4 will be described below. A plurality of types of light emitting diodes emit light having different wavelengths from each other, and a light source switching device moves the plurality of types of light emitting diodes to selectively arrange these light emitting diodes on the same optical axis. Therefore, the light source switching device switches the light emitting diode that irradiates the liquid crystal panel with a light beam among a plurality of types of light emitting diodes, and the light beam from the switched light emitting diode can display an image to be exposed on the photosensitive material. It passes through the panel and is sent to the photosensitive material side.

Therefore, since the light source switching device switches the light emitting diodes for irradiating the liquid crystal panel with light rays among a plurality of types of light emitting diodes, it is possible to disperse the light emitting diodes. Become. As a result, it is possible to arrange a large number of light emitting diodes of each kind in a well-balanced manner so as not to cause color unevenness, increase the number of light emitting diodes, and increase the density.

[0023]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment according to the present invention will be described below with reference to the drawings.

The configuration of the printer processor 10 in this embodiment will be described with reference to FIGS. 1 and 2. The printer processor 10 whose outside is covered with a casing 12 performs a process of developing, fixing, rinsing, and drying a printer unit 58 that exposes the printing paper of the main print and the sub-print, and the exposed printing paper. And a processor unit 72.

First, the structure of the printer unit 58 will be described.
A work table 14 protruding from the casing 12 to the left in FIG. 1 is installed in the printer processor 10, and a negative film 16 is provided on the upper surface of the work table 14.
There are arranged a negative carrier 18 for setting and a keyboard 15 for the operator to input commands, data and the like.

A main exposure light source section 36 is installed below the work table 14. A light source 38 is installed in the main exposure light source section 36, and the light emitted from the light source 38 is
Color correction filter (hereinafter, Color-Correction Filter: C
The negative film 16 set on the negative carrier 18 is reached via a C filter 40) and a diffusion tube 42.
The CC filter 40 has C (cyan), M (magenta), Y
It is composed of three sets of (yellow) filters, and each filter operates under the control of the CC filter control unit 39,
The insertion amount is variable on the optical axis of the light emitted from the light source 38.

A cover 44 is arranged on the downstream side of the negative carrier 18 (upper side in FIG. 1).
A main exposure optical system 46 and a sub-printing section 22 for exposing sub-printing such as index printing are provided therein.

A half mirror 43 is arranged at the bottom of the main exposure optical system 46, and the light transmitted through the negative film 16 set on the negative carrier 18 reaches it. An exposure lens 48 for changing the magnification of an image to be exposed and a black shutter 50 for blocking the exposure light are sequentially arranged on the downstream side of the optical path passing through the half mirror 43. A mirror 51 that reflects exposure light in a substantially right-angled direction is arranged downstream of the black shutter 50, and the exposure light reflected by the mirror 51 is applied to a photographic printing paper 54 that is a photosensitive material set in an exposure chamber 52. The photographic paper 54 is exposed by the irradiation.

On the other hand, on the downstream side of the optical path reflected by the half mirror 43, a photometric lens 45 for changing the magnification of the photometric image is arranged, and on the downstream side of the photometric lens 45, a half A mirror 47 is arranged. A scanner 108 composed of an image sensor or the like is arranged in the direction in which light is reflected by the half mirror 47.
The scanner 108 is connected to the image signal processing unit 102 that performs predetermined image processing on the image data of each frame of the negative film 16 read by the scanner 108.

A simulator 104 as an image display device is connected to the image signal processing unit 102, and the simulator 104 displays images of each frame of the negative film 16 in the case of being produced under the set conditions. A print simulation image is displayed.

An image memory 106 for storing image data is connected to the image signal processing unit 102, and the image signal processing unit 102 stores the image data of each frame of the negative film 16 read by the scanner 108. Each of the three color components is stored in the image memory 106.

A negative density measuring unit 56 for measuring the image density of each frame of the negative film 16 is provided on the downstream side of the optical path passing through the half mirror 47, and the negative density measuring unit 56 has an image sensor. Scanner 56B composed of the like and the negative film 1 read by the scanner 56B
Negative density measuring device 56A for measuring the image density of each frame of 6
And are installed.

On the other hand, as shown in FIGS. 2 and 4, in the sub-printing section 22, a light emitting diode (hereinafter, referred to as a light emitting diode) for emitting a red component of light is used as an exposure light source for index printing.
R-LED) 26, a light emitting diode that emits a green component of light (hereinafter, referred to as G-LED) 27, and a light emitting diode that emits a blue component of light (hereinafter, B-LED)
Are provided corresponding to the openings 110A of the case 110, respectively.
4, the operation is controlled.

The B-LED 25 among the LEDs 25, 26 and 27 is arranged on the exposure optical axis X,
The R-LED 26 and the G-LED 27 are arranged outside the exposure optical axis X, respectively. Therefore, the dichroic mirror 28A that reflects the red component light from the R-LED 26 is provided on the downstream side in the traveling direction of the light emitted from the B-LED 25.
Also, a dichroic mirror 28B that reflects the green component light from the G-LED 27 is sequentially arranged, and R-
The optical axis of the red light emitted from the LED 26 and the G-LE
The optical axis of the green light emitted from D27 is bent to match the exposure optical axis X.

The dichroic mirror 28A transmits light components other than the red component, and the dichroic mirror 2
8B transmits light components other than the green component, so that B-
The blue component light emitted from the LED 25 passes through the dichroic mirrors 28A and 28B, and the red component light emitted from the R-LED 26 is transmitted to the dichroic mirror 2.
8B is transmitted.

In the above description, an example of an optically advantageous arrangement is shown from the relationship between the light amount of each LED and the sensitivity of the photosensitive material. However, as a specific arrangement of claim 1, in addition to the arrangement of this embodiment, the R-LED 26 and the G-LED 27 are arranged.
R-LED26 and G-LED, which are three types of LEDs, respectively at three positions where the B-LED25 and the B-LED25 are arranged.
By arranging 27 and the B-LED 25 in various combinations, five combinations in total, that is, six combinations in total are possible. If the arrangement is other than the arrangement of the present embodiment, it is necessary to change the type of dichroic mirror.

As shown in FIG. 2, a mirror 30 is arranged at the downstream side of the dichroic mirror 28B in the light traveling direction and at the end of the optical path (a position that does not affect the image). A light source light amount sensor 2 for measuring the light amount of the light emitted from the light source in the reflection direction.
9 are arranged.

On the downstream side of the arrangement position of the mirror 30,
The liquid crystal panel 31 is arranged along a plane perpendicular to the exposure optical axis X. Image display surface 37 of liquid crystal panel 31
(See FIG. 3), a large number of pixels (not shown) capable of displaying white, black, and their intermediate colors with 256 gradations are regularly arranged by electrical means.

The liquid crystal panel 31 includes the liquid crystal panel 3
The liquid crystal panel driver 32 for driving the drive unit 1 is connected to the liquid crystal panel driver 32. The liquid crystal panel driver 32 is connected to the sub control unit 23 that monitors and controls various processing states in the sub printing unit 22. The sub-control unit 23 is a CPU, R (not shown).
It is composed of an AM, a ROM, an input / output controller and the like, and is connected to the above-mentioned image memory 106 via the input / output controller.

The sub-control unit 23 reads out any image data in each frame of the negative film 16 stored in the image memory 106, and an image corresponding to this image data is displayed on the liquid crystal panel 31 by the liquid crystal panel driver 32. Can be displayed.

Further, the sub control unit 23 controls the image memory 10
The image data of each frame of the negative film 16 stored in 6 is read out, one index image data in which frame images are arranged according to a predetermined rule is formed, and a predetermined number of the formed one index image data is formed. An image corresponding to image data for one frame, for example, five frames (one column) can be displayed on the liquid crystal panel 31 by the liquid crystal panel driver 32. Further, it is also possible to display on the liquid crystal panel 31 an image corresponding to the image data of only the R, G, and B color components of the image data for one column.

A mirror 34 is arranged at the end of the optical path (a position that does not affect the image) downstream of the position where the liquid crystal panel 31 is arranged, and the liquid crystal panel 31 is arranged in the light reflection direction by the mirror 34. A transmitted light amount sensor 33 for measuring the amount of light transmitted through is disposed.

On the downstream side of the arrangement position of the mirror 34,
A plurality of exposure lenses 35 for changing the magnification of the image of the sub-print to be exposed are arranged, and the image of the index print displayed on the liquid crystal panel 31 and projected by the exposure light is printed on the photographic paper 54. Exposure lens 35
Is imaged at a predetermined magnification.

Further, the light source control unit 24, the light source light amount sensor 29, and the transmitted light amount sensor 33 described above are further connected to the sub control unit 23, and the sub control unit 23 measures R measured by the light source light amount sensor 29. , G, and B, the appropriate light amount correction amount is calculated based on the light amount values, and the B-LED 25,
The light source control unit 24 corrects the amount of light emitted from the R-LED 26 and the G-LED 27. Similarly, the sub-control unit 23 controls the liquid crystal panel driver 32 based on the transmitted light amount value measured by the transmitted light amount sensor 33 to adjust the density of the image displayed on the liquid crystal panel 31 so as to obtain an appropriate transmitted light amount. I do.

As with the sub controller 23, the main controller 20 for controlling and monitoring the entire printer processor 10 is installed below the exposure chamber 52. The main control unit 20 includes a CPU, RAM, ROM,
It is composed of an input / output controller and the like. The main control unit 20 includes the CC filter control unit 39, the negative density measuring device 56A, the image signal processing unit 102, and the sub control unit 23 described above.
Is connected to monitor the operation of each of these components.
Controlling.

On the other hand, as shown in FIG. 1, the casing 12
A mounting portion 60 is provided at a corner portion of the upper surface of the paper, and a paper magazine 64 for accommodating the photographic printing paper 54 wound around the reel 62 in layers is mounted on the mounting portion 60.

A pair of rollers 66 is arranged near the mounting portion 60, and holds the photographic printing paper 54 in a horizontal state to expose it in the exposure chamber 5.
Transport to 2. The photographic printing paper 54 is wound around a roller 67 in front of the cover 44, turned 90 degrees and hung down. A first stock unit 69 is provided between the roller 66 and the roller 67 to guide and stock the photographic paper in a substantially U-shape.

A roller 68 is provided below the exposure section of the exposure chamber 52.
A, 68B, and 68C are arranged, and the printing paper 54 on which the image of the negative film 16 is printed in the exposure chamber 52 is turned by approximately 90 degrees by each of the rollers 68A, 68B, and 68C, and is turned to a processor unit 72 described later. Conveyed.

A cutter 71 is arranged on the downstream side of the roller 68A, and the cutter 71 cuts the rear end of the photographic printing paper 54 after the exposure processing. The printing paper 54 that has been cut by the cutter 71 and left in the exposure chamber 52 can be rewound into the paper magazine 64 again. Also, the roller 68
A between the printing paper 54 and the roller 68B.
There is provided a second stock portion 73 for guiding and stocking in a substantially U shape. In the second stock unit 73,
By stocking the printing paper 54, the printer unit 58
And the difference in processing time between the processor unit 72 and the processor unit 72 is absorbed.

Next, the configuration of the processor section 72 will be described. The processor section 72 is provided with a color developing processing tank 74 storing a color developing processing liquid, a bleach-fixing processing tank 76 storing a bleach-fixing processing liquid, and a plurality of rinsing processing tanks 78 storing a washing processing liquid. The photographic printing paper 54 is sequentially transported through the color developing tank 74, the bleach-fixing tank 76, and the plurality of rinsing tanks 78, so that the developing, fixing, and rinsing processes are sequentially performed. Photographic paper 54 that has been washed
Is transported to the drying section 80 adjacent to the rinsing tank 78,
In the drying section 80, the photographic paper 54 is wound around rollers and exposed to high-temperature air to be dried.

The printing paper 54 is nipped by a pair of rollers (not shown), and is discharged from the drying section 80 at a constant speed after the completion of the drying process. A cutter unit 84 is provided on the downstream side of the drying unit 80, and the cutter unit 84 has a cut mark sensor 86 for detecting a cut mark applied to the photographic printing paper 54.
A paper density measuring unit 90 for measuring the density of the printing paper 54 and a cutter 88 for cutting the printing paper 54 are installed. The cut mark sensor 86, the paper density measuring unit 90, and the cutter 88 are respectively the main control unit 20.
It is connected to the. In the cutter unit 84, the photographic printing paper 54 is cut by the cutter 88 for each image frame, and the photographic print is completed.

The completed photographic prints are discharged to the sorter unit 92, sorted in the sorter unit 92, and subjected to a predetermined inspection work. By this verification work, after defective prints such as so-called out-of-focus images are extracted, normal photographic prints are returned to the customer together with the negative film.

Next, the operation of the present embodiment will be described. First, the exposure process of the main print in the printer unit 58 of the printer processor 10 will be described. Black shutter 5
With 0 closed, the negative film 16 on which the image to be printed is recorded is set on the negative carrier 18, the light source 38 is turned on, and the density of the image of the negative film 16 formed by the light transmitted through the negative film 16 is adjusted. Negative density measuring unit 56
To measure. Based on the measured image density of the negative film 16, the main control unit 20 sets appropriate exposure conditions (for example, the amount of each filter of the filter unit 40 inserted). Next, the black shutter 50 is opened, and the image on the negative film 16 is exposed on the photographic printing paper 54 based on the set exposure conditions.

Next, as an exposure process of the sub print in the printer unit 58, the photographic paper 54 is printed by the sub print unit 22.
The case where the index print is exposed will be described.

First, the negative film 16 on which the image to be printed is recorded is set on the negative carrier 18. After that, the light source 38 is turned on, and the image of the negative film 16 formed by the light transmitted through the negative film 16 is scanned by the scanner 1
Read sequentially at 08. Then, the read image data is stored in the image memory 106 by the image signal processing unit 102.

The sub-control unit 23 reads out image data for several frames from the image memory 106, and the red component of the image data (hereinafter referred to as a red image) is printed on the photographic paper 54.
The image corresponding to the red image is displayed on the liquid crystal panel 31 so that the image is formed on the R-LED 26, and the R-LED 26 is turned on for a time corresponding to the exposure condition set above. As a result, the red component light is reflected by the dichroic mirror 28A and transmitted through the dichroic mirror 28B, and the red image in the image data is exposed on the photographic paper 54.

Similarly, the green component (green image) of the image data is displayed on the liquid crystal panel 31 and G
-LED 27 is turned on, light of the green component is reflected by dichroic mirror 28B, and the green image of the image data is exposed on photographic paper 54. The blue component (blue image) is also displayed on the liquid crystal panel 31, the B-LED 25 is turned on, and the blue component light is emitted from the dichroic mirror 28A.
The blue image in the image data is exposed on the photographic printing paper 54 through 28B.

As a result of the above, the images of the index print to be printed are successively exposed on the printing paper 54 as shown in FIG.

That is, the plurality of LEDs 25, 26, 27 emit lights having wavelengths different from each other, and the dichroic mirrors 28A, 28B selectively transmit and reflect in accordance with the wavelength, and the LEDs 25, 26, 27 emit light. Light is coaxially arranged, transmitted through the liquid crystal panel 31 capable of displaying an image to be exposed on the photographic paper 54, and the exposure light is sent to the photographic paper 54 side.

Therefore, the LEDs 25, 26, 2 are used as the light source.
Since No. 7 is adopted, heat generation and power consumption are reduced, a cooling device for cooling the light source is unnecessary, and the entire sub print unit 22 can be downsized. Along with this, there is no need to use a fan as a cooling device, and dust prevention in the sub print unit 22 becomes easy.

Further, the dichroic mirrors 28A, 28
B arranges the light rays from the plurality of LEDs 25, 26, 27 coaxially, so that the plurality of LEDs 25, 2 are arranged on the same optical axis.
It is no longer necessary to arrange 6 and 27,
There is no need to move 25, 26, 27 by the power of a motor or the like to switch them. Therefore, the LEDs 25, 26,
Since there are no moving parts to move 27, printer processor 10 failures are reduced.

Next, the processing in the processor section 72 will be described. After the image to be printed is exposed on the printing paper 54 as described above, the printing paper 54 is processed by the processor unit 72.
The color developing processing tank 74, the bleach-fixing processing tank 76, and the plurality of rinsing processing tanks 78 are sequentially conveyed, so that the developing, fixing, and washing processes are sequentially performed on the printing paper 54.
The photographic printing paper 54 that has been washed with water is conveyed to the drying unit 80 and is dried with high temperature air. The dried photographic printing paper 54 is conveyed to the cutter unit 84, cut by the cutter 88 for each image frame, and becomes a photographic print. Then, the photographic prints are discharged to the sorter unit 90 and sorted in the sorter unit 90.

Next, a second embodiment according to the present invention will be described with reference to FIG. The same members as those described in the first embodiment are designated by the same reference numerals, and the duplicate description will be omitted.

As shown in FIG. 5, the light emitting diode of the present embodiment is not the reflection type used in the first embodiment, but a B-LED 125, R-LE of a bullet shape.
D126 and G-LED 127 are adopted. Then, a plurality of (for example, three in this embodiment) are arranged at the same positions as in the first embodiment.

Therefore, according to this embodiment, the same operation as that of the first embodiment is achieved, but L of each color is used.
Since a plurality of EDs 125, 126, 127 are respectively arranged, there is an advantage that the light amount can be easily increased or decreased only by selectively lighting these LEDs 125, 126, 127.

Next, a third embodiment according to the present invention will be described with reference to FIG. The same members as those described in the first embodiment and the second embodiment are designated by the same reference numerals, and a duplicate description will be omitted.

As shown in FIG. 6, the light emitting diode of the present embodiment has a bullet-shaped LE as in the second embodiment.
D125, 126 and 127 are adopted respectively.
However, the R-LED 126 has the strongest light intensity, and the G-LED
Considering the characteristics of the light emitting diode in which 127 has the next highest light intensity and B-LED 125 has the lowest light intensity, for example, there are three B-LEDs 125, one R-LED 126, and G.
-Two LEDs 127 are provided respectively.

Therefore, the opening 11 above the case 110 is formed.
Corresponding to 0A, R-LED126, G-LED127
Is arranged, and the B-LED 125 is arranged corresponding to the opening 110A on the left side of the case 110. And
One dichroic mirror 28C that reflects the red component light and the green component light is used for the R-LED 126 and the G-LED.
B-LED125 while reflecting the light rays from 127.
The optical axis from the light is transmitted to match these optical axes with the exposure optical axis X.

Therefore, according to this embodiment, the same operation as that of the first and second embodiments can be achieved.

Next, a fourth embodiment according to the present invention will be described with reference to FIG. The same members as those described in the first embodiment are designated by the same reference numerals, and the duplicate description will be omitted.

As shown in FIG. 7, in the present embodiment, instead of the pair of dichroic mirrors 28A and 28B, a pair of movable mirrors 140A and 140B serving as switching means.
The structure is arranged. Each of the movable mirrors 140A and 140B has a structure in which a frame 144 to which a mirror plate 146 that reflects light rays is attached is attached to a rotating shaft 142 that is connected to a drive source such as a motor (not shown). Therefore, the pair of movable mirrors 14
When the frames 144 of 0A and 140B rotate about the rotation shaft 142, the movable mirrors 140A and 140B can take positions on the exposure optical axis X and positions off the exposure optical axis X.

Therefore, when the movable mirror 140A is rotated to be positioned on the exposure optical axis X, the movable mirror 140A moves to R
-Reflecting the red component light emitted from the LED 26,
The optical axis of the red light is bent to match the exposure optical axis X. Further, when the movable mirror 140B is rotated and positioned on the exposure optical axis X, the movable mirror 140B reflects the green component light emitted from the G-LED 27 and bends the optical axis of the green light. Match the exposure optical axis X.

As described above, when the B-LED 25 emits the blue component light, the pair of movable mirrors 140A, 140
B is rotated to a position deviated from the exposure optical axis X so that the blue component light is sent to the liquid crystal panel 31 side. Also, R-LE
When D26 emits the red component light, the movable mirror 1
40A is rotated to a position on the exposure optical axis X, and the movable mirror 140B is rotated to a position deviated from the exposure optical axis X, and is reflected by the movable mirror 140A to send the red component light to the liquid crystal panel 31 side. To Further, when the G-LED 27 emits the green component light, the movable mirror 140B is rotated to a position on the exposure optical axis X, and the movable mirror 140B is rotated.
The light of the green component is reflected to be sent to the liquid crystal panel 31 side.

Next, the operation of this embodiment will be described. Move the movable mirrors 140A and 140B to rotate,
Multiple types of LEDs 2 that emit light of different wavelengths
R-LED 26 and G-LED 27 among 5, 26 and 27
From the movable mirror 140 to bend the light beam from the light source to align it on the exposure optical axis X that is coaxial with the light beam of the B-LED 25 and send the light beam to the photographic paper 54 side through the liquid crystal panel 31.
A and 140B take. For this reason, a plurality of types of LEDs 25,
6 and 27 are switched, and the switched LED 25,
The light rays from 26 and 27 are transmitted to the photographic paper 54 side through the liquid crystal panel 31 capable of displaying the image to be exposed on the photographic paper 54.

Therefore, the movable mirrors 140A, 140B
However, since the light emitting diode for irradiating the liquid crystal panel 31 with light rays is switched among the LEDs 25, 26, 27,
It is possible to dispose 25, 26 and 27 in a distributed manner. As a result, it is possible to arrange a large number of light emitting diodes of each kind in a well-balanced manner so as not to cause color unevenness, increase the number of light emitting diodes, and increase the density. That is, it is possible to dispose a plurality of light emitting diodes instead of one each as in the light emitting diode of the present embodiment.

Next, a fifth embodiment according to the present invention will be described with reference to FIG. The same members as those described in the first embodiment and the second embodiment are designated by the same reference numerals, and a duplicate description will be omitted.

As shown in FIG. 8, the present embodiment has a structure in which a pair of dichroic mirrors 28A, 28B is replaced by a single movable mirror 140C as a switching means. And this movable mirror 140C
In the same manner as in the fourth embodiment, the structure is such that a frame 144 to which a mirror plate 146 that reflects light rays is attached is attached to a rotating shaft 142 that is connected to a drive source such as a motor (not shown). ing. Therefore, the movable mirror 1
When the frame 144 of 40C rotates, the movable mirror 14
0C can take a position on the exposure optical axis X and a position deviated from the exposure optical axis X.

However, the movable mirror 140C of the present embodiment
Is an R-LED1 arranged in place of the R-LED26
It is arranged in place of the G-LED 27 and a position where the optical axis of the red light is bent by reflecting the light of the red component emitted from the R-LED 126 so as to be opposed to the position 26 and coincides with the exposure optical axis X. G-LE facing G-LED 127
By reflecting the light of the green component emitted from D127, the position where the optical axis of the green light is bent and coincides with the exposure optical axis X can be taken.

Therefore, when the B-LED 125 emits the blue component light, the pair of movable mirrors 140C is rotated to a position off the exposure optical axis X, and the blue component light is directed to the liquid crystal panel 31 side. send. Further, when the R-LED 126 emits the red component light, the movable mirror 140C is moved to the R-LED.
The liquid crystal panel 3 is rotated to a position on the exposure optical axis X facing the 126 and reflected by the movable mirror 140C to emit the red component light.
Send to side 1. Further, when the G-LED 127 emits light of a green component, the movable mirror 140C is moved to the G-LED1.
27. The liquid crystal panel 3 is rotated to a position on the exposure optical axis X facing 27, and is reflected by the movable mirror 140C to reflect the green component light.
Send to side 1.

As described above, this embodiment also has the same operation as that of the fourth embodiment. Next, a sixth embodiment according to the present invention will be described with reference to FIG. The same members as those described in the first embodiment, the second embodiment, and the fifth embodiment are designated by the same reference numerals, and the duplicate description will be omitted.

As shown in FIG. 9, the present embodiment is the fifth embodiment.
The structure is such that a movable mirror 140C similar to that in the above embodiment is arranged. Therefore, when the frame 144 of the movable mirror 140C rotates, the movable mirror 140C can take a position on the exposure optical axis X and a position off the exposure optical axis X.

However, the R-LED 126 has the strongest light amount, the G-LED 127 has the second strongest light amount, and the B-LED 1
Considering the characteristic that 25 is the weakest amount of light, for example, B
-3 LEDs 125, 1 R-LED 126, G-
Two LEDs 127 are provided respectively.

Therefore, the opening 11 below the case 110 is formed.
Corresponding to 0A, R-LED126, G-LED127
Is arranged, and the B-LED 125 is arranged corresponding to the opening 110A on the left side of the case 110. And
R-LED 126, G-L with one movable mirror 140C
It reflects the light rays from the ED 127.

Therefore, according to this embodiment, the same operation as that of the third and fifth embodiments can be achieved.

Next, a seventh embodiment according to the present invention will be described with reference to FIG. The same members as those described in the first embodiment are designated by the same reference numerals, and the duplicate description will be omitted.

As shown in FIG. 10, on the base end side of the case 110 of this embodiment, cannonball-shaped B-LEDs 125, R are formed.
-A plurality of LEDs 126 and G-LEDs 127 (for example, three in this embodiment) are provided as support plates 152.
By being supported above, they are arranged opposite to each other.

The support plate 152 is reciprocally supported on the guide member 154 and is also connected to a belt 156 which is driven and rotated by a motor 158. Therefore,
When the belt 156 is rotated by the motor 158, the support plate 152 reciprocates along the longitudinal direction of the guide member 154, and as a result, the B-LED 125 and the R-LED 126.
And the arrangement of the G-LED 127 is changed.

On the other hand, the exposure optical axis X is located at the center of the opening 110A formed on the base end side of the case 110, and constitutes the support plate 152, the guide member 154, the belt 156, the motor 158 and the like. The light source switching device 160, which is a switching unit, includes the B-LED 125 and the R-LED 12
6 and the G-LED 127 are moved, and B is moved on the exposure optical axis X.
-LED125, R-LED126 and G-LED12
7 can be arranged respectively.

Next, the operation of this embodiment will be described. The light source switching device 160 moves the plurality of types of LEDs 125, 126, 127 that emit light having different wavelengths from each other to selectively arrange the plurality of types of LEDs 125, 126, 127 on the exposure optical axis X. Therefore, the light source switching device 160 uses a plurality of types of LEDs 125, 126, 12 that emit light rays to the liquid crystal panel 31.
LED 125, 12 switched among 7
The light rays from 6, 127 pass through the liquid crystal panel 31 and are sent to the photographic paper 54 side.

Therefore, the light source switching device 160 sets the light emitting diode for irradiating the liquid crystal panel 31 with a light beam to the LED 1
Since it switches among 25, 126, 127, LED1
It is possible to disperse 25, 126, 127. As a result, it is possible to arrange a large number of light emitting diodes of each kind in a well-balanced manner so as not to cause color unevenness, increase the number of light emitting diodes, and increase the density.

Further, although the LEDs 125, 126 and 127 are adopted as the light emitting diodes in this embodiment, the reflection type LEDs 25, 26 and 27 may be adopted.

Although each light emitting diode individually emits light in the above embodiment, when the light emitting diode is used as a halogen lamp or the like, the light emitting diodes may emit light at the same time, for each color, or in a plurality of types. You may combine. Further, the light emitting diode may be of a type other than the type described in the above embodiment. On the other hand, in the above embodiment, an example in which the present invention is applied to a printer processor having a sub-printing unit is shown. It can also be applied to a liquid crystal photographic printer having a panel and an exposure system capable of exposing an image displayed on the liquid crystal panel.

[0093]

As described above, the photographic printer according to the present invention has an excellent effect that it has less heat generation and power consumption, has high dust resistance, does not require a driving force, and has a light source with no color unevenness. ing. Further, it has an excellent effect of providing a photographic printer capable of increasing the density of LEDs of a specific color without affecting other LEDs.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a printer processor according to an embodiment.

FIG. 2 is a block diagram showing a configuration of a printer unit in the printer processor according to the embodiment.

FIG. 3 is a perspective view showing an arrangement of a liquid crystal panel and an exposure lens (only one exposure lens is shown) of the printer processor according to the embodiment.

FIG. 4 is a cross-sectional view showing a configuration around a sub printing unit in the printer processor according to the first embodiment.

FIG. 5 is a cross-sectional view showing a configuration around a sub printing unit in the printer processor according to the second embodiment.

FIG. 6 is a cross-sectional view showing a configuration around a sub print unit in the printer processor according to the third embodiment.

FIG. 7 is a cross-sectional view showing a configuration around a sub printing unit in the printer processor according to the fourth embodiment.

FIG. 8 is a cross-sectional view showing a configuration around a sub printing unit in the printer processor according to the fifth embodiment.

FIG. 9 is a cross-sectional view showing a configuration around a sub print unit in the printer processor according to the sixth embodiment.

FIG. 10 is a cross-sectional view showing a configuration around a sub print unit in the printer processor according to the seventh embodiment.

[Explanation of symbols]

 10 Printer Processor (Photo Printer) 22 Sub-Printing Part 25 B-LED 26 R-LED 27 G-LED 28A Dichroic Mirror 28B Dichroic Mirror 28C Dichroic Mirror 31 Liquid Crystal Panel 54 Photographic Paper (Photosensitive Material) 125 B-LED 126 R-LED 127 G-LED 140A movable mirror 140B movable mirror 140C movable mirror 160 light source switching device

Claims (4)

[Claims] 1. A liquid crystal panel capable of displaying an image to be exposed on a light-sensitive material, a plurality of types of light-emitting diodes having mutually different emission wavelengths, and a wavelength of light arranged between the liquid crystal panel and the light-emitting diode. A photographic printer having a dichroic mirror that selectively transmits and reflects light rays from a plurality of types of light-emitting diodes on the same axis and sends the light rays to the photosensitive material side through a liquid crystal panel. 2. A liquid crystal panel capable of displaying an image to be exposed on a light-sensitive material, a plurality of types of light emitting diodes having mutually different emission wavelengths, and a plurality of types of light emitting diodes for irradiating the liquid crystal panel with light rays. A photographic printer having switching means for switching within. 3. A liquid crystal panel capable of displaying an image to be exposed on a light-sensitive material, a plurality of types of light emitting diodes having mutually different emission wavelengths, and a movable arrangement between the liquid crystal panel and the plurality of types of light emitting diodes. A movable mirror that can be positioned so as to bend a light beam from any one of a plurality of types of light-emitting diodes, adjust it to be coaxial with the light beams of other light-emitting diodes, and send it to the photosensitive material side through a liquid crystal panel. And a photo printer having. 4. A liquid crystal panel capable of displaying an image to be exposed on a photosensitive material, a plurality of types of light emitting diodes having mutually different emission wavelengths, and a plurality of types of light emitting diodes movably installed, and
A photo printer having a light source switching device capable of moving these plural kinds of light emitting diodes and selectively arranging plural kinds of light emitting diodes on the same optical axis.