JP2842151B2 - Image printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projection exposure section for projecting and exposing a film image on a photosensitive material, and to image information divided into a large number of areas and divided into a plurality of pieces of color information for each area. Further, the present invention relates to an image printer provided with an image exposure unit for exposing the photosensitive material, and a transport unit for transporting the photosensitive material along a transport path via the projection exposure unit and the image exposure unit.

[0002]

2. Description of the Related Art In such an image printer, a projection exposure section and an image exposure section are used independently as required, or a photosensitive material is transported through both exposure sections by a transport means. Exposure of the image of the film and exposure in the image exposure section are performed repeatedly on the same portion on the photosensitive material, that is, so-called multiple exposure is performed. . Conventionally, an image exposure unit of such an image printer is configured to expose a photosensitive material to a display image of a CRT which displays image information divided into a plurality of areas and decomposed into a plurality of pieces of color information for each area. It had been.

[0003]

In the above prior art, C
Due to the increase in size and complexity of the image exposure unit configured using the RT, it is difficult to reduce the size and simplification of the entire apparatus, and improvements have been desired.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an image printer capable of reducing the size and simplifying the configuration and suppressing a decrease in exposure work speed. is there.

[0005]

According to a first characteristic configuration of the image printer according to the present invention, the image exposure section divides the image information into a plurality of lines and sets each of the exposure colors of the plurality of color information. A plurality of exposure means for separately projecting light corresponding to the photosensitive material, and a moving means for vertically moving the plurality of exposure means and the photosensitive material relative to the divided line; And a transfer exposure control means for controlling the operation of the plurality of exposure means and the moving means, wherein the transfer exposure control means performs exposure by the plurality of exposure means in parallel. It is configured to execute transfer exposure control.

According to a second characteristic configuration, in the first characteristic configuration, the plurality of exposure units project light beams corresponding to a plurality of exposure colors for exposing the photosensitive material, respectively. Means, and a plurality of exposure control units arranged separately for each of the plurality of light projecting means, wherein the exposure control unit controls the exposure of the photosensitive material by light from the light projecting means. A plurality of exposure control shutters for controlling each of a plurality of regions divided in a direction orthogonal to a relative movement direction of the exposure means and the photosensitive material, wherein the plurality of exposure control units are The point is that they are provided side by side along the relative movement direction in a state of approaching the transport path.

A third characteristic configuration is that, in the first or second characteristic configuration, the plurality of exposure control units are arranged so as to expose the same portion of the photosensitive material.

In a fourth characteristic configuration, in the first, second, or third characteristic configuration, an optical path for individually guiding light from each of the plurality of light projecting means to the plurality of exposure control units is an optical fiber. The point is that it is formed.

A fifth characteristic configuration is the first, second, and third aspects.
Alternatively, in the fourth aspect, the exposure control unit is provided with a diffuser that diffuses light emitted from the optical fiber, the diffuser being positioned closer to the optical fiber than the plurality of exposure control shutters. .

According to a sixth aspect, in the first, second, third, fourth, or fifth aspect, the light source constituting the light projecting means is provided outside a housing covering the transport path. It is in that point.

[0011]

According to the first aspect of the present invention, the transporting means includes:
If necessary, in either the projection exposure unit or the image exposure unit,
Alternatively, the photosensitive material is transported while being exposed in both the projection exposure section and the image exposure section. Of these, in the exposure in the image exposure section, exposure by each of the plurality of exposure means is performed in parallel. That is, exposure using a plurality of exposure colors is performed in parallel. By the way, it is assumed that one of the exposure means configured to be able to perform exposure with a plurality of exposure colors by switching is provided and the exposure is performed while sequentially switching the exposure color. According to the first feature configuration, since exposure with a plurality of exposure colors is performed in parallel, the exposure work speed can be increased.

According to the second characteristic configuration of the present invention, the light emitted from the exposure control section by controlling the plurality of exposure control shutters individually is directly irradiated on the photosensitive material to expose the photosensitive material. Incidentally, the exposure control section is provided in a state separated from the photosensitive material transport path, and a plurality of optical fibers (hereinafter, referred to as irradiation optical fibers) for guiding light from the respective exposure control shutters to the photosensitive material are provided. However, according to the second characteristic configuration, it is not necessary to provide such a plurality of irradiation optical fibers.

According to the third characteristic configuration of the present invention, light emitted from each of a plurality of exposure control units provided separately for a plurality of exposure colors is applied to the same portion of the photosensitive material to expose the photosensitive material. Let it. That is, for example, when a plurality of exposure controllers provided separately for a plurality of exposure colors are arranged so as to expose different portions of the photosensitive material, the light of each exposure color corresponding to the same line is exposed. It is necessary to control the operation of the moving unit and each of the exposing units so as to irradiate the same portion of the photosensitive material with the light. In addition, it is possible to perform exposure with less color shift.

According to the fourth aspect of the present invention, the light from each of the plurality of light projecting means is individually guided to the plurality of exposure control units by the optical fiber. That is, when an optical fiber (hereinafter, referred to as an exposure optical fiber) for individually guiding light from each of the plurality of light projecting means to the plurality of exposure control units is not used, the light projecting means and the exposure control And the exposure control unit must be arranged on the same optical axis, and the arrangement of the light projecting unit and the exposure control unit is limited. The arrangement of the means and the exposure controller becomes flexible. Note that the exposure optical fiber may simply be provided so as to irradiate light from one light projecting unit to all of the plurality of exposure control shutters in the exposure control unit corresponding to the light projecting unit.
Precise alignment work or the like is not required, and it can be easily provided.

According to the fifth characteristic configuration of the present invention, the light emitted from the exposure optical fiber is diffused by the diffusion plate and is emitted to each of the plurality of exposure control shutters. That is, since the light is uniformly applied to each of the plurality of exposure control shutters, the amount of light applied to the photosensitive material from each exposure control shutter becomes uniform.

According to the sixth aspect of the present invention, since the light source is provided outside the housing covering the transport path, it is possible to avoid an increase in the temperature inside the housing due to heat generated from the light source. . That is, when the light source is provided inside the housing, a heat radiating unit for radiating heat from the light source to the outside of the housing is required. However, according to the sixth characteristic configuration, Without providing such a heat radiating means, it is possible to reliably avoid a rise in the temperature inside the housing. And
It is possible to suppress a change in sensitivity of the photosensitive material due to a rise in temperature.

[0017]

According to the first characteristic configuration, the image exposure unit which handles image information in a line-by-line manner is smaller and has a smaller configuration than a conventional one which handles the entire image information using a CRT. Since simplification can be achieved, and since exposure with a plurality of exposure colors is performed in parallel, a reduction in exposure work speed can be suppressed, so that projection exposure and image exposure can be performed. However, it is possible to provide an image printer in which the size of the entire apparatus is reduced and the configuration thereof is simplified, and the exposure work speed is suppressed from being reduced.

Further, according to the second characteristic configuration, as described above, there is no need to provide a plurality of irradiation optical fibers as in the case where the exposure control unit is provided apart from the photosensitive material transport path. Thus, the cost can be further reduced.

Further, according to the third characteristic configuration, as described above, the configuration for controlling the operation of the moving unit and each of the exposure units is simplified, and the exposure with less color shift can be performed. This makes it possible to print image information on a photosensitive material with higher image quality while further reducing costs.

Further, according to the fourth characteristic configuration, the arrangement of the light projecting means and the exposure control section becomes flexible as described above, so that the shape of the apparatus can be made more compact. .

Further, according to the fifth characteristic configuration, as described above, the amount of light emitted from each exposure control shutter to the photosensitive material becomes uniform, so that image information can be exposed with higher image quality. Now you can bake on the material.

Further, according to the sixth aspect, as described above, a change in the sensitivity of the photosensitive material due to a rise in temperature can be avoided without providing a heat radiating means for radiating the heat of the light source to the outside of the housing. So that while further reducing costs,
It has become possible to print image information on a photosensitive material with higher image quality.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the image printer according to the present invention will be described below with reference to the drawings. As shown in FIG. 1, the image printer 1 has a projection exposure section P for projecting and exposing image information of a film 2 on a photographic paper 3 as a photosensitive material, and dividing image information to be printed on the photographic paper 3 into lines. A transfer exposure unit M, a loop forming unit R for forming a loop of the printing paper 3 for adjusting a difference in processing speed between the projection exposure unit P and the transfer exposure unit M, a projection exposure unit P or a transfer exposure unit A development processing unit D for developing the photographic paper 3 exposed by one or both of M and a control unit C for controlling the operation of each unit of the image printer 1 are provided.

The photographic paper 3 pulled out from the photographic paper holder 4 containing the photographic paper 3 in the form of a roll is exposed in one or both of the projection exposure section P and the transfer exposure section M, and then developed. The image is developed by the processing unit D, cut into a size including one sheet of image information, and discharged.

Hereinafter, each component will be described. The projection exposure section P includes a projection exposure light source 10, a light control filter 11 for adjusting the color balance of light irradiated on the film 2, a mirror tunnel 12 for uniformly mixing light passing through the light control filter 11, and a film 2. A printing lens 13 for forming an image on the printing paper 3 and a shutter 14 are provided on the same optical axis, and an image sensor 15 for reading color density information of an image portion of the film 2 is provided on a film 2 transport path. Is provided on the upstream side.

In the projection exposure section P, color density information of the image portion of the film 2 is read by the image sensor 15, and based on the color density information, the control section C controls the dimming filter 11 to control the projection exposure light source 10 Is adjusted to a color balance corresponding to the color density of the image on the film 2, the film 2 is irradiated with the adjusted light, and the image on the film 2 is printed on the printing paper 3.

The loop forming section R includes rollers 20, 21 for conveying the printing paper 3 and a motor M for driving the rollers 20 to rotate.
1 is provided between the rollers 20 on the upstream side in the photographic paper transport direction and the rollers 21 on the downstream side in the photographic paper transport direction. A flap is provided which can be switched between a state in which printing is performed and a state in which a loop of the photographic paper 3 as shown in FIG. 1 is formed, and printing is performed in both the projection exposure section P and the transfer exposure section M. In this case, a loop of the photographic paper 3 is formed to adjust the difference between the processing speeds of the exposure units P and M.

In the transfer exposure section M, red light projecting means Rr, green light projecting means Rg for projecting light corresponding to red, green and blue exposure colors for exposing the photographic paper 3 separately. A blue light projecting means Rb, and a red exposure control unit 30r arranged separately for each of the three light projecting means Rr, Rg, Rb;
A green exposure control unit 30g and a blue exposure control unit 30b are provided.

Each of the light projecting means Rr, Rg, Rb will be described. The red light projecting means Rr includes a light source 31r, a light control filter 32r for adjusting an exposure color, and a shutter 33.
r. Similarly, green light emitting means R
g denotes a light source 31g, a light control filter 32g, and a shutter 33.
g, and the blue light projecting means Rb includes a light source 31b, a light control filter 32b, and a shutter 33b.

The red exposure control section 30r will be described. Although not shown, the red exposure control unit 30r controls the exposure of the photographic paper 3 by light from the red light projecting unit Rr for each of a plurality of areas divided in a direction orthogonal to the transport direction of the photographic paper 3. And a plurality of exposure control shutters 30S. Although not shown, the exposure control shutter 30S includes a PLZT element having a pair of electrodes disposed between a polarizer and an analyzer, and is configured by changing an applied voltage between the pair of electrodes. The polarization direction of light passing between the electrodes is changed to switch whether or not the light is allowed to pass. That is, a plurality of PLZT elements having a pair of electrodes disposed between the polarizer and the analyzer are arranged in a direction orthogonal to the direction in which the photographic paper 3 is transported, and the red exposure control unit 30r is configured. Have been.

The green exposure control unit 30g and the blue exposure control unit 30b are configured similarly to the red exposure control unit 30r.

Each of the red exposure control unit 30r, the green exposure control unit 30g, and the blue exposure control unit 30b is arranged close to the transport path of the photographic paper 3 so that the photographic paper 3 can be exposed by the light passing therethrough. In this state, they are arranged at predetermined intervals along the transport direction of the printing paper 3.

A light source 31r, a light control filter 32r, a shutter 33r, and a red exposure control unit 30r are provided on the same optical axis, thereby constituting red exposure means Er for exposing the photographic paper 3 to red light. I have. Similarly, the light source 31
g, a light control filter 32g, a shutter 33g, and a green exposure control unit 30g are provided on the same optical axis, thereby constituting a green exposure means Eg for exposing the photographic paper 3 to green light, and a light source 31b. , A light control filter 32b, a shutter 33b, and a blue exposure controller 30b are provided on the same optical axis, thereby constituting a blue exposure means Eb for exposing the photographic paper 3 to blue light.

That is, in each of the red exposure unit Er, the green exposure unit Eg, and the blue exposure unit Eb, the voltage applied to the plurality of PLZT elements is controlled independently, so that the image divided into a large number of regions is obtained. The image information for one line of the information can be printed on the photographic paper 3 in a colorized state.

A roller 22 for transporting the photographic paper 3 and a pulse motor M2 for driving the roller 22 are provided downstream of the transport exposure section M on the photographic paper transport path.

Although not shown, the development processing section D includes a plurality of tanks filled with a processing solution for developing the exposed photographic paper 3, and the photographic paper 3 sequentially passes through the plurality of tanks. It is developed.

The control section C stores a program for controlling the operation of each section, and image information read by an image reading device or created and input by computer graphics or the like.

Each of the red exposure means Er, the green exposure means Eg, and the blue exposure means Eb exposes light of each exposure color for one line of image information divided into a plurality of areas. In order to print the entire image information on the photographic paper 3, it is necessary to convey the photographic paper 3 in synchronization with the exposure in each of the exposure means Er, Eg, Eb.
A control configuration by the control unit C that controls the relationship will be described.

As shown in FIG. 2, after the transmission of the drive signal to the pulse motor M2 is stopped to stop the operation of the pulse motor M2, the signals to the respective shutters 33r, 33g, 33b are set to the "ON" state, and 33r, 33
g and 33b are each opened. At the same time, as will be described later, exposure of one line is started in each of the exposure means Er, Eg, and Eb. Subsequently, when the exposure is completed after a lapse of a predetermined time, the signals for the respective shutters 33r, 33g, and 33b are set to the "OFF" state, and the shutters 33r and 33b are turned off.
g and 33b are closed. At the same time, a drive signal is transmitted to the pulse motor
2, the photographic paper 3 is transported by a length corresponding to one line. This is sequentially repeated.

Next, referring to FIG.
r, the exposure operation control of each of the green exposure means Eg and the blue exposure means Eb will be described. Red exposure control unit 3
0r, green exposure controller 30g and blue exposure controller 3
0b are arranged at intervals corresponding to n lines along the transport direction of the printing paper 3.

First, as shown in FIG. 3A, when the portion corresponding to the first line of the photographic paper 3 is conveyed to the exposure position of the blue exposure means Eb, it is stored in the control unit C. The voltage applied to the electrodes of each PLZT of the blue exposure control unit 30b is controlled based on the image information of the blue component of the first line of the image information, and the photographic paper 3 is exposed to the first line. Thereafter, similarly, the second line, the third line,..., The (n + 1) th line are sequentially exposed by the blue exposure means Eb.

Subsequently, as shown in FIG. 3B, when the portion corresponding to the first line of the photographic paper 3 is transported to the exposure position of the green exposure means Eg, it is stored in the control section C. The voltage applied to the electrodes of each PLZT of the green exposure control unit 30g is controlled based on the image information of the green component of the first line of the image information, and the photographic paper 3 is exposed to the first line. At the same time, the control unit C is controlled by the blue exposure means Eb.
The voltage applied to the electrodes of each PLZT of the blue exposure control unit 30b is controlled based on the image information of the blue component of the (n + 2) th line among the image information stored in the photographic paper 3.
To expose the (n + 2) th line. Thereafter, in the same manner, (the second line and the (n + 3) th line), (the third line and the (n + 4) th line)... (The (n + 1) th line and the (2n + 2) th line) are sequentially performed by the green exposure unit Eg and the blue exposure unit Eb. Expose.

Subsequently, as shown in FIG. 3C, when the portion corresponding to the first line of the photographic paper 3 is transported to the exposure position of the red exposure means Er, it is stored in the control section C. The voltage applied to each PLZT electrode of the red exposure control unit 30r is controlled based on the image information of the red component of the first line of the image information, thereby exposing the photographic paper 3 to the first line. At the same time, the control unit C is controlled by the green exposure means Eg.
The voltage applied to the electrodes of each PLZT of the green exposure control unit 30g is controlled based on the image information of the green component of the (n + 2) th line among the image information stored in the photographic paper 3.
Is exposed to the (n + 2) th line, and 2n + 3 of the image information stored in the controller C by the blue exposure means Eb.
Based on the image information of the blue component of the line, the voltage applied to each PLZT electrode of the blue exposure control unit 30b is controlled to expose the photographic paper 3 to the 2n + 3rd line. In this state, for the first line, printing has been completed for all the components of each color of the image information. Thereafter, similarly, the red exposure unit Er, the green exposure unit Eg, and the blue exposure unit Eb perform (second line, n + 3 line, and 2n + 4 line), (3rd line, n + 4 line, and 2n + 5 line). Are sequentially exposed to print one sheet of image information.

The image printer 1 has a mode in which the image printed by the projection exposure unit P is overprinted by the above-mentioned transfer exposure unit M to synthesize an image, and the projection exposure unit P or the transfer exposure unit M
Can be switched to a mode in which each of them can be used independently. This switching operation is performed from the input device I connected to the control unit C.

Accordingly, the control section C and the transfer exposure section M include an image exposure section G for exposing the printing paper 3 based on image information divided into a large number of areas and divided into a plurality of pieces of color information for each area. The rollers 20 and 22, the motor M1, and the pulse motor M2 function as a transport unit H that transports the photographic paper 3 along the transport path via the projection exposure unit P and the image exposure unit G. Further, the roller 22, the pulse motor M2, and the control unit C include a plurality of exposure units Er, E
g, Eb and the photographic paper 3 function as a moving means T for vertically moving relative to the divided line;
Functions as transfer exposure control means B for controlling the operations of the plurality of exposure means Er, Eg, Eb and the movement means T.

[Another Embodiment] Another embodiment will be described below. In the above-described embodiment, the exposure unit for red Er, the exposure unit for green Eg, and the exposure unit for blue Eb are arranged. However, the exposure unit for one of these colors may be omitted, or another unit such as orange may be used. A color exposure means may be additionally used.

In the above embodiment, the photographic paper 3 is used as the photosensitive material, but other photosensitive materials such as a positive film and a photosensitive drum used for a copying machine may be used.

As shown in FIG. 4, the operation timing of each of the exposure means Er, Eg, Eb and the movement means T may be controlled based on a clock signal.

In the above embodiment, the exposure control shutter 30S uses an optical shutter using a PLZT element, but an optical shutter using a liquid crystal element or the like may be used.

Another embodiment will be described with reference to FIG. In this embodiment, the same members as those in the embodiment shown in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted.

A housing K for covering the transport path of the photographic paper 3 is provided. The red exposure control unit 30r, the green exposure control unit 30g, and the blue exposure control unit 30b are provided inside the housing K in a state where they are arranged to expose the same portion of the photographic paper 3.

The light from the light source 40 is transmitted to an optical fiber 41.
r, 41g and 41b respectively, the dimming filters 32r and 32
g, 32b. 4 in the figure
Reference numeral 2 denotes a shutter. That is, the light emitting means Rr for red
A light source 40, a shutter 42, an optical fiber 41r, and a dimming filter 32r;
Is composed of a light source 40, a shutter 42, an optical fiber 41g, and a dimming filter 32g. The blue light projecting means Rb is composed of a light source 40, a shutter 42, an optical fiber 41b, and a dimming filter 32b. That is,
The light source constituting each of the light projecting means Rr, Rg, Rb is constituted by one light source 40. In the figure, 43 is an IR cut filter, and 44 is a cooling fan. The light source 40,
The shutter 42, the IR cut filter 43, and the cooling fan 44 are housed in a casing 45, and the casing 45 is provided outside the housing K.

The light from the red light emitting means Rr, the green light emitting means Rg, and the blue light emitting means Rb are respectively transmitted by the optical fibers 46r, 46g, 46b to the red light emitting means Rb disposed inside the housing K. Exposure controller 30r, green exposure controller 30
g and the blue exposure control unit 30b. That is, the light from the red light projecting means Rr, the green light projecting means Rg, and the blue light projecting means Rb are respectively transmitted to the red exposure control section 30r, the green exposure control section 30g, and the blue exposure control section 30b. An optical path for guiding each is formed by each of the optical fibers 46r, 46g, 46b.

Further, as shown in FIG. 6, the exposure controller 30r for red has a diffuser 47r for diffusing the light projected from the optical fiber 46r.
It is provided so as to be located closer to the optical fiber 46r than OS. Although not shown, similarly to the diffuser 47r provided in the red exposure control section 30r, the green exposure control section 3r is provided.
0 g is provided with a diffuser 47 g and the blue exposure control unit 30.
b is provided with a diffuser 47b. Although not shown, each of the optical fibers 46r, 46g, and 46b is configured by bundling a plurality of optical fibers in a state of being arranged in a row. Accordingly, the red light projecting means Rr, the optical fiber 46r, and the red exposure control unit 30r constitute a red light exposure means Er, and the green light projecting means Rg, the optical fiber 46g, and the green light exposure control unit 30g,
A green exposure unit Eg is configured, and a blue light projection unit Rb,
The optical fiber 46b and the blue exposure control unit 30b constitute a blue exposure unit Eb. The red, green, and blue components of the same line are exposed in parallel by the red exposure unit Er, the green exposure unit Eg, and the blue exposure unit Eb.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an image printer according to an embodiment of the present invention.

FIG. 2 is a diagram showing a timing chart according to the embodiment of the present invention.

FIG. 3 is a view showing an example of a printing state according to the embodiment of the present invention;

FIG. 4 is a timing chart according to another embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of an image printer according to another embodiment of the present invention.

FIG. 6 is a partially cutaway perspective view of the vicinity of an exposure control unit according to another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 3 photosensitive material 30r, 30g, 30b exposure control unit 30S exposure control shutter 40 light source 46r, 46g, 46b optical fiber 47r, 47g, 47b diffuser Er, Eg, Eb exposure unit G image exposure unit H transport unit B transfer exposure control unit K housing P projection exposure unit Rr, Rg, Rb light projecting means T moving means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 27/32 G03B 27/46 G03B 27/52 G03B 27/73

Claims (6)

(57) [Claims] 1. A projection exposure section (P) for projecting and exposing an image of a film onto a photosensitive material (3), based on image information divided into a number of regions and divided into a plurality of color information for each of the regions. Then, the photosensitive material (3) is exposed along the transport path via the image exposure section (G) for exposing the photosensitive material (3), the projection exposure section (P) and the image exposure section (G). An image exposing section (G) for dividing the image information into a plurality of lines, and exposing each of the exposure colors of the plurality of color information. A plurality of exposure means (E) for exposing the photosensitive material (3) by projecting light corresponding to
r), (Eg) and (Eb), and the plurality of exposure means (Er), (Eg) and (Eb) and the photosensitive material (3) are relatively moved in the vertical direction with respect to the divided line. Moving means (T); and a plurality of exposure means (Er), (Eg), (Eb), and a transfer exposure control means (B) for controlling the operation of the moving means (T). The transfer exposure control means (B) is configured to execute the transfer exposure control in a state where the exposure by each of the plurality of exposure means (Er), (Eg), and (Eb) is performed in parallel. Printer. 2. The method according to claim 1, wherein the plurality of exposure means (Er), (E
g) and (Eb) are a plurality of light projecting means (Rr) for separately projecting light corresponding to a plurality of exposure colors for exposing the photosensitive material (3),
(Rg) and (Rb), and a plurality of exposure controllers (30) respectively arranged for the plurality of light projecting means (Rr), (Rg) and (Rb).
r), (30g), and (30b), and the exposure control units (30r), (30g), and (30b).
The exposure of the photosensitive material (3) with light from the light projecting means (Rr), (Rg), (Rb) is performed by the exposure means (Er), (Eg), (Eb) and the photosensitive material ( 3) A plurality of exposure control shutters (30S) for controlling each of a plurality of areas divided in a direction orthogonal to the direction of relative movement with (3).
The plurality of exposure control units (30r), (30g), and (30
2. The image printer according to claim 1, wherein b) is provided side by side along the relative movement direction in a state of being close to the transport path. A plurality of exposure controllers (30r), (3r)
The image printer according to claim 1, wherein the first and second portions are arranged so as to expose the same portion of the photosensitive material. 4. The light emitting means (Rr), (Rr)
g) and (Rb), the optical paths for individually guiding the light to the plurality of exposure controllers (30r), (30g) and (30b) are optical fibers (46r), (46g) and (46b).
4. The image printer according to claim 1, wherein the image printer is formed by: 5. The exposure control section (30r), (30r)
g) and (30b), the optical fiber (46r),
The diffusers (47r), (47g), and (47b) for diffusing the light emitted from the (46g) and (46b) are provided by the optical fibers (46r) and (46g) more than the plurality of exposure control shutters (3OS). 5. The image printer according to claim 1, wherein the image printer is provided so as to be located on the side of (), (46b). 6. The light emitting means (Rr), (Rg), (R
The light source (40) constituting b) is provided outside a housing (K) covering the transport path.
Or the image printer according to 5.