JPH07295115A - Illumination light source device - Google Patents

Abstract

PURPOSE:To obtain an illumination light source device which can obtain an image of high picture quality without color unevenness by uniform lighting of respective colors and is realized at a low cost with a simple structure. CONSTITUTION:The illumination light source device 39 has each light emitting element group 33 constituted by providing respective LED chips of B, G, and R closely to one another, and light emitting element groups 33 are arrayed at a certain pitch. Therefore, lights from the respective LED chips are in the same phase in the array direction of the light emitting element groups 33. Consequently, a photosensitive material is irradiated uniformly with lights, where the respective colors of B, G, and R are mixed almost equally, along the array direction (width direction of document) of the light emitting element groups 33, and exposed without color unevenness, so that the color image of high picture quality can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination light source device, and more particularly, to an illumination light source device used in an image recording device or the like for irradiating a document image with light to expose the image on a photosensitive material.

[0002]

2. Description of the Related Art An illumination light source device is a light source of an image recording device for exposing a photosensitive material to record an image or a liquid crystal display device (L).
It is used as a backlight for CD displays. Further, as an image recording apparatus, a reflective or transmissive original is irradiated with light from a light source, and this light (reflected light or transmitted light) is connected to a photosensitive surface of a silver salt color photosensitive material in a slit shape through an imaging lens system. It is known to image and record a color image.

By the way, for the purpose of downsizing the device, as shown in FIG. 9, LEDs emitting red (R), green (G) and blue (B) colors are arranged in a straight line at equal intervals. The present applicant has already proposed an image recording apparatus using the array 200 as an illumination light source (Japanese Patent Application No. 5-234962).

According to this image recording apparatus, by using the LED array 200 as the illumination light source, it becomes possible to control the light quantity without causing a color change easily by the current control, and the diaphragm mechanism is provided in the imaging lens system. Since it is not necessary to provide the device, the device can be downsized.

[0005]

However, in the case of using the LED array 200 as linear illumination in which a large number of LEDs (dotted elements) are simply arranged as described above, FIG.
As shown in (B), the BG along the array direction of each dot element
The emission phase of each color of R differs depending on the arrangement pitch (the phase is shifted), and therefore, there is a defect that color unevenness occurs in the photosensitive material. Since such color unevenness is more clearly perceived by human eyes than normal density unevenness due to uneven exposure amount, it is sufficiently eliminated in order to improve quality and obtain a high-quality image. There was a need, and measures for this were eagerly awaited.

In consideration of the above facts, the present invention can uniformly illuminate each color to obtain a high quality image without color unevenness.
Moreover, it is an object of the present invention to obtain an illumination light source device that can realize this with a simple structure and at low cost.

[0007]

An illumination light source device according to a first aspect of the present invention is an illumination light source device in which point light emitting elements are arranged, and a plurality of types of points emitting at least two different colors. Light emitting elements are arranged close to each other so that the light emission phases in the arrangement direction are substantially the same, and these point light emitting elements form one light emitting element group, and the light emitting element groups are arranged at a constant pitch. I am trying.

[0008]

According to the first aspect of the invention, light is emitted by each of the plurality of light emitting element groups arranged at a constant pitch. Here, in one light emitting element group, a plurality of types of point light emitting elements are provided close to each other and emit light of respective colors in substantially the same phase. Therefore, the point light emitting elements are simply arranged in a line and irradiated as they are. Case (when using a normal LED array, etc.)
There is no color unevenness depending on the arrangement pitch.

Therefore, for example, when this illumination light source device is used as an illumination light source for exposing a photosensitive material, the photosensitive material is exposed without causing color unevenness. Therefore, a high-quality image without color unevenness can be obtained.

Further, by using an LED chip or the like as the point light emitting element, the amount of light can be easily controlled by current control, and optimum illuminance control can be easily performed.
The scope of application will also be expanded.

As described above, in the illumination light source device according to the first aspect, it is possible to uniformly illuminate each color and obtain a high-quality image without color unevenness, and this is realized with a simple structure at low cost. it can.

[0012]

FIG. 4 shows a schematic overall configuration diagram of an image recording apparatus 10 to which an illumination light source device 39 according to an embodiment of the present invention is applied.

The image recording apparatus 10 is an apparatus which exposes an image on a photothermographic material and transfers the image on an image receiving material by thermal development and transfer to form an image.

The image recording apparatus 10 is formed in a box shape as a whole, and the inside of the machine base 12 can be exposed by opening the doors provided on the front and side surfaces of the machine base 12.

Further, on the upper surface of the machine base 12 of the image recording apparatus 10, there is provided a mounting base 13 for mounting the original 42. The mounting table 13 is supported by rails (not shown) and is movable in the left-right direction in FIG. A rectangular hole is provided in the mounting table 13 and a transparent glass plate 45 is attached to the mounting table 13. Further, a holding cover 15 that can be opened / closed is attached on the transparent glass plate 45 with the side on the back side of the device as an axis. . Further, as shown in FIG. 3, a rack 28 is provided below the mounting table 13 and is connected to a motor 30 via a plurality of gears 29. Therefore, when the motor 30 operates, the mounting table 13 is moved along with the pressing cover 15 along the rail.

On the other hand, a photosensitive material magazine 14 is arranged in the machine base 12 of the image recording apparatus 10, and the photosensitive material 16 is wound and stored in a roll shape. This photosensitive material 16
Is wound with the photosensitive (exposure) surface facing downward of the apparatus.

A nipping roller 18 and a cutter 20 are arranged in the vicinity of the photosensitive material take-out port of the photosensitive material magazine 14 so that the photosensitive material 16 can be cut out after the photosensitive material 16 is pulled out from the photosensitive material magazine 14 by a predetermined length.

A plurality of conveying rollers 19, 21, 23, 24, 26 and a guide plate 27 are arranged on the side of the cutter 20, and the photosensitive material 16 cut to a predetermined length is sent to the exposure section 22. Can be transported.

The exposing section 22 is located between the carrying rollers 23 and 24, and the exposing material (exposure point) is defined between the carrying rollers to allow the photosensitive material 16 to pass therethrough. In synchronization with the passage of the photosensitive material 16, the motor 30 is operated and the mounting table 13 moves in the same direction.

Above the exposed portion 22 and the transparent glass plate 4
An exposure device 38 is provided in the space below 5. As shown in detail in FIG. 3, the exposure device 38 includes an illumination light source device 39 as a linear illumination (light source) that emits each color of BGR, and a rod lens array 41 as a linear imaging system.
Is arranged, and the original 42 on the mounting table 13 that moves in synchronism with the conveyance of the photosensitive material 16 can be irradiated with light and a reflected image thereof can be formed on the photosensitive surface of the photosensitive material 16.

The illumination light source device 39 is constructed by arranging a plurality of LED chips as point light emitting elements. That is, as shown in FIGS. 1 and 2, an LED chip for B light, an LED chip for G light, and an LED chip for R light are provided close to each other along the scanning direction of the original 42,
The light emitting element group 33 is configured by these. Further, the light emitting element groups 33 are arranged at a predetermined pitch P ₁ (usually about 3 mm) along the width direction of the document 42. Therefore, an LED chip for B light,
The G light LED chip and the R light LED chip have the same light emission phase (the same phase) in the arrangement direction of the light emitting element groups 33 (the width direction of the document 42). Further, a rod lens 34 is arranged in front of each LED chip (light emitting element group 33) of the BGR, and each LED
The light emitted from the chip (light emitting element group 33) can be collected and emitted. As a result, the illumination light source device 39 causes the original 4
Light having a mixture of BGR colors is evenly distributed along the width direction of 2, and the screen of the document 42 can be scanned as the document 42 moves.

Further, each LED chip of the illumination light source device 39 can independently control the light emission time and the light emission brightness. Therefore, it is not necessary to provide a color filter or a diaphragm mechanism for controlling the light quantity and the light quality on the optical axis, and the light quantity and the light quality can be controlled by the current control of the LED chip.

On the other hand, the rod lens array 41 has a structure in which the lenses corresponding to each of the plurality of light emitting element groups 33 of the illumination light source device 39 are arranged and assembled in a straight line at a predetermined pitch. Thus, the reflected light (image light of the document 42) from the document 42 due to the light of the illumination light source device 39 can be imaged on the photosensitive surface of the photosensitive material 16.

An exposure amount correction plate (aperture) 31 is arranged as an exposure amount adjusting means in the optical path near the exposure point of the exposure unit 22 (between the transportation rollers 23 and 24). A slit-shaped opening 32 is formed in the exposure amount correction plate 31. One side of the opening 32 is formed in a shape (waveform) according to the arrangement pitch of the light emitting element group 33 of the illumination light source device 39 and each lens of the rod lens array 41. That is, as shown in FIG. 5 (A), the illumination light source device 39 has uneven illuminance (light amount) according to the arrangement pitch of the light emitting element groups 33, and the rod lens array 41 corresponds to the arrangement pitch of each lens. Similarly, the illuminance is uneven. The shape of the opening 32 is set according to the waveform of this integrated unevenness. As a result, when the reflected light from the original 42 due to the light from the illumination light source device 39 is applied to the photosensitive material 16 via the rod lens array 41, the photosensitive material 16 is exposed by passing through the opening 32 of the exposure amount correction plate 31. The exposure amount to the material 16 is made uniform.

A switchback unit 4 is provided on the side of the exposure unit 22.
0 is provided, and a water application section 62 is provided below the exposure section 22. The photosensitive material 16 that has risen to the side of the photosensitive material magazine 14 and has been exposed in the exposure unit 22 is provided below the exposure unit 22 by the reverse rotation of the transport roller 26 after being fed into the switchback unit 40 once. It is configured to be fed to the water coating section 62 via the above-mentioned transport path.

A plurality of pipes are connected to the water application section 62 so that water can be supplied.

On the side of the water application section 62, the heat development transfer section 10 is provided.
4 is arranged so that the photosensitive material 16 coated with water is fed.

On the other hand, the machine base 12 on the side of the photosensitive material magazine 14
An image receiving material 106 is provided in the image receiving material 1
08 is rolled up and stored. A dye fixing material having a mordant is applied to the image forming surface of the image receiving material 108, and the image forming surface is wound toward the upper side of the apparatus.

The receiving material magazine 106 is the sensitive material magazine 14
Similarly, it is composed of a body portion and a pair of side frame portions fixed to both end portions of the body portion, and the front side of the machine base 12 (the front side of the plane of FIG. 4, that is, the width of the wound image receiving material 108). direction)
It is possible to withdraw to.

A nip roller 110 is arranged in the vicinity of the image receiving material take-out port of the receiving material magazine 106 so that the image receiving material 108 can be pulled out from the receiving material magazine 106 and the nip can be released. A cutter 112 is arranged beside the nip roller 110.

On the side of the cutter 112, the photosensitive material magazine 1
An image receiving material transporting section 180 is provided at the side of 4. The image receiving material transport unit 180 includes a transport roller 186,
190, 114 and a guide plate 182 are arranged, and the image receiving material 108 cut into a predetermined length can be conveyed to the heat development transfer section 104.

The photosensitive material 16 conveyed to the heat development transfer section 104 is sent between the bonding roller 120 and the heating drum 116, and the image receiving material 108 is the photosensitive material 1.
In synchronism with the conveyance of 6, the photosensitive material 16 is fed between the laminating roller 120 and the heating drum 116 in a state of being preceded by a predetermined length so as to be superposed.

Inside the heating drum 116, a pair of halogen lamps 132A and 132B are arranged so that the surface of the heating drum 116 can be heated.

The endless pressure contact belt 118 is wound around five winding rollers 134, 135, 136, 138, 140, and the endless outside between the winding rollers 134 and 140 is a heating drum. It is pressed against the outer periphery of 116.

A bending guide roller 142 is provided below the heating drum 116 on the downstream side in the material supply direction of the endless pressure welding belt 118.
Are arranged. A peeling claw 154 is rotatably supported by a shaft below the heating drum 116 on the downstream side of the bending guide roller 142 in the material supply direction.

The photosensitive material 16 peeled by the peeling claw 154 is wound around the bending guide roller 142 and accumulated in the waste photosensitive material storage box 178.

A peeling roller 174 and a peeling claw 176 are arranged near the heating drum 116 on the side of the bending guide roller 142. Peeling roller 174 and peeling claw 176
A receiving material guide 170 is arranged below the receiving material discharge rollers 172, 173, and 175.
The peeling roller 174 and the peeling claw 176 can guide and convey the image receiving material 108 peeled from the heating drum 116.

The image receiving material 108 peeled from the outer circumference of the heating drum 116 by the peeling claw 176 is received by the material receiving guide 170.
In addition, the material receiving rollers 172, 173, and 175 convey the sheet and discharge it to the tray 177.

Next, the operation of this embodiment will be described. After the document 42 is placed on the table 13 (transparent glass plate 45) and the pressing cover 15 is closed, the magnification of the image to be recorded, the number of images to be processed, etc. are designated, and when a start instruction is given, the image processing is started.

That is, with the photosensitive material magazine 14 set, the nip roller 18 is operated and the photosensitive material 16
Are pulled out by the nickel roller 18. Photosensitive material 1
When 6 is pulled out by a predetermined length, the cutter 20 operates and the photosensitive material 16 is cut into a predetermined length.

After the operation of the cutter 20, the photosensitive material 16 is
The sheet is inverted and conveyed to the exposure section 22 with its photosensitive (exposure) surface facing upward. Simultaneously with the transportation of the photosensitive material 16, the mounting table 13 starts to move by the operation of the motor 30, and the exposure device 38 also operates. Here, the moving speed of the mounting table 13 is determined at a predetermined magnification with respect to the conveying speed of the photosensitive material 16 according to the designated magnification.

In the exposure device 38, the illumination light source device 39 is turned on, the image surface of the original 42 is line-scanned, and the reflected light is scanned by the rod lens array 41 onto the photosensitive surface of the photosensitive material 16 located in the exposure section 22. Exposed.

In this case, from the illumination light source device 39 to the document 42.
The light radiated to is emitted by the plurality of light emitting element groups 33 arranged at a constant pitch.

Here, in the case of irradiating light with an ordinary LED array 200 configured by simply arranging LED chips (point-like light emitting elements) as shown in FIG. 9 in a linear form, for example, FIG. Also, as shown in (B), not only unevenness in illuminance (light amount) occurs according to the arrangement pitch of the LED chips, but also color unevenness occurs according to the arrangement pitch of the LED chips. On the other hand, in the illumination light source device 39, since each LED chip of BGR in each light emitting element group 33 is provided close to each other and emits each color in substantially the same phase, FIG.
As shown in, there is no color unevenness. Therefore, the photosensitive material 1
No. 6 is exposed without causing color unevenness.

Further, in this case, when the reflected light from the original 42 is applied to the photosensitive material 16 through the rod lens array 41, it passes through the opening 32 of the exposure amount correction plate 31. Here, the light emitted from the illumination light source device 39 includes
As shown in (A), there is unevenness in the light amount along the arrangement direction of the light emitting element groups 33. However, since the opening 32 of the exposure amount correction plate 31 is formed in a waveform corresponding to the illuminance unevenness caused by the array pitch of the light emitting element group 33 of the illumination light source device 39 and the lenses of the rod lens array 41, the illuminance is The unevenness is corrected by passing through the opening 32 of the exposure amount correction plate 31, and the exposure amount of the photosensitive material 16 is made uniform without unevenness.

Further, in this case, when the illumination light source device 39 is turned on, since each LED can independently control its light emission brightness and light emission time, it depends on the density of the original 42 to be applied and the color balance of the photosensitive material 16. Controlled. That is, even if the color filter and the diaphragm mechanism are not provided on the optical axis, it is possible to obtain the optimum light quantity and light quality only by controlling the current to each LED, so that the configuration of the exposure device 38 is simplified.

After the exposure is started by the exposure device 38, the exposed photosensitive material 16 is temporarily switched back to the switchback section 40.
After being fed to the water application section 62, it is fed to the water application section 62 by the reverse rotation of the transport roller 26.

In the water application section 62, water is applied to the photosensitive material 16, and the squeeze roller 68 removes excess water and passes through the water application section 62.

The photosensitive material 16 coated with water as an image forming solvent in the water coating section 62 is squeezed roller 6.
It is sent to the heat developing and transferring section 104 by 8.

On the other hand, when the scanning exposure of the photosensitive material 16 is started, the image receiving material 108 is also pulled out from the receiving material magazine 106 by the nip roller 110 and conveyed. When the image receiving material 108 is pulled out by a predetermined length, the cutter 112 operates and the image receiving material 108 is cut into a predetermined length. After the operation of the cutter 112, it is conveyed by the conveying rollers 190, 186, 114 while being guided by the guide plate 182, and is in a standby state immediately before the heat development transfer section 104.

In the heat development transfer section 104, when it is detected that the photosensitive material 16 has been fed between the outer periphery of the heating drum 116 and the laminating roller 120 by the squeeze roller 68, the conveyance of the image receiving material 108 is restarted. The heating drum 11 is fed to the laminating roller 120 as well.
6 is activated.

In this case, the guide plate 122 is arranged between the laminating roller 120 and the squeeze roller 68 of the water application section 62, and the photosensitive material 16 sent from the squeeze roller 68 is surely bonded to the laminating roller 120. Be guided to.

The photosensitive material 16 and the image receiving material 108, which are superposed by the laminating roller 120, remain in the superposed state, and the heating drum 116 and the endless pressure contact belt 11 are kept.
It is sandwiched between the heating drum 116 and the heating drum 116, and approximately 2/3 of the circumference (between the winding roller 134 and the winding roller 140).
Be transported to. As a result, the photosensitive material 16 and the image receiving material 108 are heated to release the movable dye, and at the same time, the dye is transferred to the dye fixing layer of the image receiving material 108 to obtain an image.

After that, when the photosensitive material 16 and the image receiving material 108 are nipped and conveyed and reach the lower portion of the heating drum 116, the peeling claw 154 is moved by the cam 130 and the image receiving material 1
08, the peeling claw 154 engages with the leading end of the photosensitive material 16 that is conveyed by a predetermined length, and peels the leading end of the photosensitive material 16 from the outer periphery of the heating drum 116. Further, the pinch roller 157 presses the photosensitive material 16 by the returning movement of the peeling claw 154, whereby the photosensitive material 16 is wound around the bending guide roller 142 while being pressed by the pinch roller 157, and is moved downward to be discarded photosensitive material. It is accumulated in the storage box 178.

On the other hand, the heating drum 1 is separated from the photosensitive material 16.
The image receiving material 108 that moves while being in close contact with 16.
Is sent to the peeling roller 174 and peeled.

The image receiving material 108 peeled from the outer periphery of the heating drum 116 by the peeling claw 176 is further wound around the peeling roller 174 and moved downward, and guided by the material receiving guide 170 while receiving the material receiving rollers 172, 1.
It is conveyed by 73, 175 and discharged to the tray 177.

As described above, in the illumination light source device 39 according to the present embodiment, each color can be uniformly illuminated, so that a high-quality image without color unevenness can be obtained, and a simple structure is provided. Can be realized at low cost.

Further, the illumination light source device 39 is provided for each L of BGR.
Since the emission brightness and emission time of the ED chip can be controlled independently, the amount of light can be easily controlled by current control, color correction and adjustment can be performed, and there is no need to provide an aperture and a color filter mechanism. It is possible to reduce the size of the device.

Further, in the image recording apparatus 10 to which the illumination light source device 39 is applied, the light emitting element group 33 of the illumination light source device 39 as the linear illumination and the respective lenses of the rod lens array 41 as the linear imaging system are formed. Even if the illumination unevenness occurs at each array pitch, the exposure amount correction plate 3 having the openings 32 formed in a waveform corresponding to the uneven illumination caused by these array pitches.
1 is provided in the optical path, the exposure amount correction plate 3
The exposure amount of the photosensitive material 16 exposed through the first opening 32 is constant without unevenness. Therefore, a high quality image without image unevenness can be obtained.

Further, if there is illumination unevenness at each array pitch as described above, it is necessary to use a filter for each color, but since the illumination light source device 39 can illuminate without color unevenness as described above, a single exposure is performed. The unevenness of the exposure amount can be corrected only by the amount correction plate 31, and the cost is reduced.

In the above-described embodiment, the illumination light source device 39 includes the LED chip for B light, the LED chip for G light, and the LED chip for R light as the dot-like light emitting element of the original 42. Although the light emitting element groups 33 are arranged close to each other along the scanning direction and the light emitting element groups 33 are arranged at a predetermined pitch P ₁ along the width direction of the document 42,
The arrangement direction and the number of the LED chips of the BGR are not limited to this.

For example, as shown in FIG. 6, an LED chip for B light, an LED chip for G light, and an LED chip for R light as point light emitting elements are arranged at a pitch P along the width direction of the original 42. ₂ may be provided close to each other by about 0.5 mm to form a light emitting element group 35, and the light emitting element groups 35 may be arranged at a predetermined pitch P ₁ along the width direction of the document 42, or FIG. As shown in FIG. 7, the light emitting element group 36 may be configured by providing LED chips of a color having a light amount smaller than that of other LED chips (for example, LED chips for B light) more than the other LED chips. In this case, the light emitting phases of the LED chips of the light emitting element group 36 are substantially the same as in the above-described embodiment, and the color unevenness can be significantly reduced as compared with the related art.

Further, for example, as shown in FIG. 8, LED chips as point light emitting elements are provided in two rows or three or more rows close to each other in the scanning direction and the width direction of the original 42 to form the light emitting element group 37. It may be configured. In this case, the LED of the color with less light than other LED chips
Chip (for example, LED chip for B light) to other LED
It is possible to provide more LEDs than the chips, or to set the number according to the sensitivity of the photosensitive material 16, and to set the LED chips that are provided more in a distributed manner in one light emitting element group 37. preferable. Also in this case, the light emitting phases of the LED chips of the light emitting element group 37 are substantially the same as in the above-described embodiment, and the color unevenness can be significantly reduced as compared with the conventional case.

Further, in the above-mentioned embodiment, the illumination light source device 39 has the constitution using the LED chip of BGR as the point light emitting element, but the point light emitting element is not limited to this, and for example, iR, You may use the false light system of R, G, or the light source which combined the wavelength of 4 or more types of colors.

Further, in the above-described embodiment, the example in which the illumination light source device 39 is applied to the image recording device 10 for exposing the photosensitive material 16 accommodated in a roll is explained.
It is naturally applicable to an image recording apparatus configured to expose a sheet-shaped photosensitive material. Further, in the above-described embodiment, the example in which the illumination light source device 39 is applied to the image recording device 10 configured to irradiate the reflection original 42 with light has been described, but it is applicable even when a transparent original is used. is there.
In this case, the transparent original may pass between the illumination light source device 39 and the rod lens array 41.

Furthermore, in the above-mentioned embodiment,
The original 42 is irradiated with light and the image of the original 42 is exposed to the photosensitive material 1
Although the illumination light source device 39 is applied to the image recording apparatus 10 configured to expose and record 6 to prevent color unevenness, the present invention is not limited to this, and such an illumination light source device 39 is used. The technique can be applied to an image recording device having another configuration.

For example, the illumination light source device 39 as described above may be applied to an exposure apparatus having a liquid crystal shutter panel to control the exposure process by operating the liquid crystal shutter panel to prevent color unevenness. Further, the illumination light source device 39 may be applied to an image recording device having a structure in which light from a light source is directly irradiated onto a photosensitive material via a rod lens array to be exposed, or a CCD configured in a line shape is used. It is also possible to prevent color unevenness by using the illumination light source device 39 as the linear illumination (light source) in the image recording apparatus having the configuration.

[0068]

As described above, the illumination light source device according to the present invention can uniformly illuminate each color to obtain a high quality image without color unevenness, and realize this with a simple structure and at low cost. It has an excellent effect that it can be done.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an illumination light source device according to an embodiment of the present invention.

FIG. 2 is a plan view showing an arrangement state of LED chips of the illumination light source device according to the embodiment of the invention.

FIG. 3 is a front view showing a configuration of an exposure device of an image recording device to which the illumination light source device according to the embodiment of the invention is applied.

FIG. 4 is a schematic overall configuration diagram of an image recording device to which an illumination light source device according to an embodiment of the present invention is applied.

5A and 5B show an illumination state of an illumination light source device according to an embodiment of the invention, FIG. 5A is a diagram showing light amount unevenness, and FIG. 5B is a diagram showing color unevenness.

FIG. 6 is a plan view showing another example of the arrangement state of the LED chips of the illumination light source device according to the embodiment of the invention.

FIG. 7 is a plan view showing another example of the arrangement state of the LED chips of the illumination light source device according to the embodiment of the invention.

FIG. 8 is a plan view showing another example of the arrangement state of the LED chips of the illumination light source device according to the embodiment of the invention.

FIG. 9 is a plan view showing an element array state of a conventional LED array.

FIG. 10 shows a lighting state of a conventional LED array,
(A) is a diagram showing light amount unevenness, and (B) is a diagram showing color unevenness.

[Explanation of symbols]

 10 Image Recording Device 16 Photosensitive Material 33 Light Emitting Element Group 35 Light Emitting Element Group 36 Light Emitting Element Group 37 Light Emitting Element Group 38 Exposure Device 39 Illumination Light Source Device 42 Original

Claims (1)

[Claims] 1. An illumination light source device comprising an array of dot-like light emitting elements, wherein at least two or more kinds of dot-like light emitting elements for emitting different colors have substantially the same emission phase in the arrangement direction. As described above, the illumination light source device is characterized in that these point-like light emitting elements are provided in close proximity to each other as one light emitting element group, and the light emitting element groups are arranged at a constant pitch.