JP2653932B2 - Plate inspection equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate making apparatus,
In particular, the present invention relates to a plate inspection apparatus for producing a plate inspection used for checking the quality of a color printed matter using an ultraviolet light and an ultraviolet-sensitive photosensitive material.

[0002]

2. Description of the Related Art Conventionally, there are various types of plate inspection making apparatuses, each of which has a drawback.

[0003] One of the typical methods of the plate inspection making apparatus is an overlay method. In this method, an image is reproduced by superimposing each color material film, and it is inevitable to see the image through the film, and the image deteriorates.

[0004] In addition, there is a method called a surprint method as a method for obtaining an image on one sheet. In this method, images are obtained by sequentially superposing four color photosensitive films on one support. This method includes Chromalin (DuPont), Match Print (3M
Co., Ltd.) and color art (Fuji Photo Film) are known, but each requires four photosensitive films and generates waste.

In addition, a color paper system is known as a method for forming a color image on one photosensitive sheet. In this method, a film original is brought into close contact with color paper, exposed using each color filter, and wet developed to obtain a color image. Fine checkers (Fuji Photo Film) and consensus (Konica) are known. I have. In this method, since the sensitivity range of the color paper is in the visible range, a dark room or an exposure device having a dark room is required for handling, and maintenance management of the developer is required.

These methods require a plurality of sheets, generate waste such as transfer sheets and toner, are difficult to handle in a bright room, and require a developing system using a developing solution. Therefore, there is a need for improvement.

On the other hand, a latent image is formed on the photocurable composition by ultraviolet light, and components related to color development or decolorization are diffused in the photosensitive material according to the latent image by heating to form a color image. A heat-developable photosensitive recording medium has been proposed, but in order to prepare a plate inspection using this method, an image document is passed through, the photosensitive recording medium is irradiated with ultraviolet light, and photo-cured in an exposed portion. To form a latent image, and then
By heating the photosensitive recording medium, a portion related to color development or decoloring of the uncured portion is diffused to form a visible image, which may be used as a plate inspection.

As the ultraviolet-sensitive photosensitive material that develops color by thermal development, a latent image in which the exposed portion of the photocurable composition is photocured by exposure is formed, and components related to the color development of the uncured portion are heated. A heat-developable photosensitive material that moves from the outside of the microcapsule to the microcapsule according to the latent image to form a colorless dye in the microcapsule to form an image, or the exposed portion of the photocurable composition is exposed to light. A cured latent image is formed, and the components related to the decolorization of the uncured part are moved by heating from the outside of the microcapsule to the microcapsule according to the latent image and the dye in the microcapsule is decolorized to form an image Heat-developable photosensitive materials are preferred. For a specific method for producing a photosensitive material and the form of the photosensitive material that can be preferably used in the present invention, see
-72358 or EP-A-0412570.
The description in A2 can be referred to.

In this case, an electrodeless light source is used as a light source for emitting ultraviolet light, and the ultraviolet light generated by the electrodeless light source is cyan (C), magenta (M), and yellow ( Y) is divided into photosensitive wavelength regions of the photosensitive recording medium corresponding to (Y), and this ultraviolet light is irradiated on the photosensitive recording medium via image originals corresponding to each color, thereby forming a plate inspection. Conceivable.

When exposure for a predetermined time is performed in such a plate inspection making apparatus, when the electrodeless light source is deteriorated and the amount of light is reduced, the amount of light applied to the photosensitive material is reduced. As a method, when the light in the entire wavelength range from the electrodeless light source reaches, an integrating light meter is provided between the electrodeless light source and the dye filter, and when the light amount measured by the integrating light meter reaches a predetermined value. The exposure may be terminated.

[0011]

However, such a dye filter is relatively easy to manufacture and can be manufactured in a large size, but has the disadvantage that the color is severely faded and the durability is low. For this reason, a plate inspection apparatus using ultraviolet light using an interference filter instead of the dye filter can be considered.

However, it is difficult to manufacture the interference filter as compared with the dye filter, and a large filter cannot be manufactured.
Therefore, a structure in which a small interference filter is arranged near the electrodeless light source is obtained. For this reason, the distance between the interference filter and the electrodeless light source becomes narrow, and it becomes difficult to provide an integrating light meter at this position. Is conceivable.

In consideration of the above facts, the present invention can reliably integrate the light amounts of light emitted from a light source and before being incident on an interference filter, and can prevent quality deterioration of an exposed image due to insufficient exposure. The purpose is to obtain a plate inspection machine.

[0014]

According to the first aspect of the present invention, there is provided an ultraviolet-sensitive photosensitive material which forms a color image by irradiating light in an ultraviolet wavelength range and heating the same. A plate inspection creating device that includes a light source and irradiates the photosensitive material with ultraviolet light from the light source through an image original to create an inspection plate, wherein an interference disposed between the light source and the image original It is characterized in that it has a filter and light quantity integrating means in which a light receiving section is inserted in an optical path between the interference filter and the light source.

Further, the invention according to claim 2 is provided with a light source for irradiating ultraviolet light to an ultraviolet-sensitive photosensitive material that forms a color image by irradiating and heating light in an ultraviolet wavelength range, A plate inspection creating apparatus that creates an inspection plate by irradiating the photosensitive material with ultraviolet light from the light source through an image original, wherein an interference filter disposed between the light source and the image original, Light amount integrating means for integrating the light amount of the light source, a light transmission cable in which a light receiving unit is arranged in an optical path between the interference filter and the light source, and a light extraction unit is arranged toward the light amount integrating unit, It is characterized by having.

Further, the invention according to claim 3 is provided with a light source for irradiating ultraviolet light to an ultraviolet-sensitive photosensitive material which forms a color image by irradiating and heating light in an ultraviolet wavelength range, A plate inspection creating apparatus that creates an inspection plate by irradiating the photosensitive material with ultraviolet light from the light source through an image original, wherein an interference filter disposed between the light source and the image original, Light amount integrating means for integrating the light amount of the light source, and light reflecting means disposed in an optical path between the interference filter and the light source and reflecting a part of the irradiation light from the light source toward the light amount integrating means And having the following.

[0017]

According to the first aspect of the present invention, the light receiving section of the light quantity integrating means is inserted in the optical path between the interference filter and the light source. Therefore, the light amounts of the light emitted from the light source and before being incident on the interference filter can be reliably integrated. For this reason, even when the electrodeless light source deteriorates and the light amount decreases,
The required amount of light can be applied to the photosensitive material, and the deterioration of image quality due to insufficient exposure can be prevented.

According to the second aspect of the present invention, the light receiving section of the light transmission cable is arranged in the optical path between the interference filter and the light source, and the light extracting section is arranged to face the light quantity integrating means. I have. Therefore, part of the light emitted from the light source and before being incident on the interference filter is emitted to the light quantity integrating means via the light transmission cable. For this reason, even if the distance between the interference filter and the light source is narrow, it is possible to reliably integrate the light amounts of the light emitted from the light source and before being incident on the interference filter. Therefore, even when the light source is deteriorated and the light amount is reduced, the required amount of light can be applied to the photosensitive material, and the deterioration of the image quality due to insufficient exposure can be prevented.

According to the third aspect of the present invention, the light reflecting means is disposed in the optical path between the interference filter and the light source, and the light reflecting means reduces a part of the light emitted from the light source. The light is reflected toward the integrating means and irradiated to the light quantity integrating means. For this reason, even if the distance between the interference filter and the light source is narrow, it is possible to reliably integrate the light amounts of the light emitted from the light source and before being incident on the interference filter. Therefore, even when the light source is deteriorated and the light amount is reduced, the required amount of light can be applied to the photosensitive material, and the deterioration of the image quality due to insufficient exposure can be prevented.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS.

The plate inspection apparatus 10 shown in FIG.
Before the actual printing using the original film that has been color-separated into plate, M, C and BK (Sumi) plates, make sure that the original film layout is correct, that there is no color difference, and that the characters are correct. This is a plate inspection production device for producing a color proof for inspecting for originals, etc.
After being positioned one by one and sequentially superimposed on an ultraviolet light-sensitive material and subjected to multiple contact exposures, heat development is performed to form a color proof.

FIG. 1 of the casing 12 of the plate inspection apparatus 10
At the upper left side of the image forming apparatus, a photosensitive material roll accommodating section 14 is provided. The photosensitive material roll accommodating box 14 is loaded with a magazine 18 accommodating a photosensitive material 16. An opening 14 </ b> A is provided on the upper surface of the photosensitive material roll housing 14.

A rotary knob 20 is provided on the front surface of the photosensitive material roll accommodating section 14, and when the rotary knob 20 is rotated clockwise, the photosensitive material 16 opens the opening 14A.
It is to be carried out from. Photosensitive material roll storage unit 1
A cutter 22 is provided in the fourth opening 14A.
The cutter 22 is interlocked with a slide knob 24 provided at an upper part of the front surface of the photosensitive material roll accommodating section 14, and cuts the photosensitive material 16 by operating the slide knob 24. Therefore, the operator can control the photosensitive material roll storage unit 14.
The photosensitive material 16 drawn out from the nip can be cut into a predetermined length by the cutter 22.

A substantially central portion of the upper surface of the casing 12 is an exposure section 26. A rectangular notch is formed in the exposure unit 26, and a transparent glass plate 28 is inserted into the notch. Exposure section 26 of casing 12
A pair of positioning pins 30 are provided upright on the front side of the device, and the positioning pins 30 are connected to the Y, M, C, and B plates.
Each original film 32 can be easily and accurately positioned by being inserted into a positioning hole formed in an edge of each original film 32 that has been color-separated into a K (sumi) plate.

The exposure section 26 is covered with an upper lid 34. The upper lid 34 is attached to the casing 12 via a hinge 36, and the upper lid 34 can swing about the hinge 36 as a center of rotation.

As shown in FIG. 2, the upper lid 34 is a box-shaped body having an internal space 37, and a suction pipe 38 is connected thereto. This suction pipe 38 is
2 is connected to a blower 40 disposed therein. The blower 40 is provided with a control device 4 provided in the casing 12.
2, and the blower 40 is controlled to be turned on and off by a control device 42. Therefore, when the blower 40 operates, the upper lid 3 is moved through the suction pipe 38.
The inside of the internal space 37 is sucked and decompressed.

A plurality of small holes 35 are formed in a surface (pressing surface) 34A of the upper cover 34 which presses the photosensitive material 16, and when the inside space 37 of the upper cover 34 is depressurized, the pressing surface is formed. The photosensitive material 16 is adsorbed on 34A.

As shown in FIG. 3, a Fresnel lens 29 is adhered to the lower portion of the glass plate 28 in the casing 12 so that the photosensitive material 16 is irradiated with parallel light through each original film 32. Has become. An electrodeless light source 44, which is a light source, is provided below the Fresnel lens 29. The electrodeless light source 44 includes a reflector 46 having a substantially hemispherical shape. A position slightly shifted from the focal point of the reflector 46 to the opposite side (the lower side in FIG. 3) of the glass plate 28 is defined as the electrodeless light source 44. Is a light emitting point 48. Accordingly, a part of the light emitted from the light emitting point 48 is emitted as direct light toward the glass plate 28, and a part of the light emitted from the light emitting point 48 is reflected light reflected by the reflector 46. Is irradiated in the direction of the glass plate 28.

In the vicinity of the electrodeless light source 44 between the electrodeless light source 44 and the Fresnel lens 29, the interference filter unit 4
9 are arranged. This interference filter unit 49
Is composed of a disk-shaped turret 50 and a drive motor 52 having a drive shaft connected to the axis of the turret 50. The turret 50 is provided with four circular holes 54 at substantially equal intervals around the axis.
Three interference filters 56 and a transparent glass 57 for performing exposure corresponding to the color separation original film 32 of the Y, M, C, and BK (Sumi) plates are attached.

The filter unit 49 is provided with a turret (not shown) coaxially with the turret 50. The turret is provided with two holes, and one of these holes has an original film. A light reduction filter for reducing the amount of light of the electrodeless light source 44 is attached according to the sensitivity of the light source 32, and the other hole is a through hole.

In this embodiment, in the case of a positive photosensitive material, the original film 32 is used as a Y-plate, a BK (Sumi) plate,
The BK (Sumi) plate is superimposed on the M plate and the BK (Sumi) plate is superimposed on the C plate, and the BK (sumi) plate is brought into close contact with the photosensitive material in order. , The photosensitive wavelength region of the photosensitive material corresponding to yellow (Y) (C = 400 to 435 nm, M = 365 to 400 nm,
(Y = 330 to 365 nm), and the exposure is performed three times by decomposing by the interference filter 56 (state of FIG. 3). In this case BK
The plate is placed closer to the light source. In the case of a negative photosensitive material, the Y, M, C, and
The BK (sumi) plate is sequentially brought into close contact with the photosensitive material 14, and the ultraviolet light generated by the electrodeless light source 44 is applied to the photosensitive wavelength region of the photosensitive material corresponding to cyan (C), magenta (M), and yellow (Y), respectively. Then, the light is decomposed by the interference filter 56, and is exposed by the transparent glass 57 that transmits ultraviolet light in the entire photosensitive wavelength range of the photosensitive material corresponding to BK (Sumi). Further, only the filter insertion hole may be used without using the transparent glass, or a neutral gray filter may be used. At the time of exposure corresponding to BK, a correction filter having absorption in the ultraviolet may be used instead of the transparent glass 57 or the neutral gray filter in order to correct the spectral sensitivity in the ultraviolet region.

The number of interference filters 56 may be one for each transmission wavelength range, but it is preferable to reduce the half width by combining two or more filters.

The drive motor 52 is constituted by a stepping motor. The drive motor 52 rotates the turret 50 by a predetermined angle in accordance with a signal from the control device 42, and causes each interference on the optical path between the electrodeless light source 44 and the Fresnel lens 29. Filter 56
And the transparent glass 57 are put in and out.
Further, the control unit 42 includes an exposure unit 26 of the casing 12.
Is connected to a filter selection button 62 provided on the front side, and the control device 42 inserts the interference filter selected by the filter selection button 62 into the optical path between the electrodeless light source 44 and the Fresnel lens 29. To be,
The rotation of the drive motor 52 is controlled.

The filter selection button 62 is used to select the type of the original film, ie, the C, M, and Y original films 32.
, The filter selection buttons 62A, 62B,
62C and a filter selection button 62D for the BK (sumi) plate original film 32 in the case of a negative photosensitive material.

An exposure start button 63 and an exposure stop button 65 are provided near the filter selection button 62. The exposure start button 63 and the exposure stop button 65 are connected to the control device 42, respectively. .

A heat-insulating filter 45 is disposed between the interference filter 56 and the light source 44, thereby preventing the temperature of the interference filter 56 from rising. In addition, the interference filter 5
A blow port of the blower 55 is open near 6 to prevent the temperature of the interference filter 56 from rising due to the blow from the blower 55.

A temperature sensor 58 is attached to each interference filter 56. These temperature sensors 58 are connected to the control device 42, and when the temperature of the interference filter 56 exceeds a predetermined value, the control device 42 prohibits the start of the exposure process and the temperature of the interference filter 56. When the temperature becomes equal to or lower than the predetermined temperature, the controller 42 can start the exposure.
A lamp 60 for warning a rise in temperature is provided on the front side of the exposure unit 26 of the casing 12, and is turned on and off by the output of the control device 42.

As shown in FIG. 3, a louver 64 is disposed on the electrodeless light source 44 side of the interference filter 56 along the optical path.

As shown in FIG. 4, the louver 64 is composed of a plurality of (seven to eight) ring-shaped fins 66A, 66B,... Arranged coaxially. , 66B,... Are connected to each other by two beams intersecting at substantially right angles passing through the axis. Are enlarged from the electrodeless light source 44 side (the lower side in FIG. 4) to the interference filter 56 side, and the fins arranged on the outer side increase in diameter. The rate has been increased. Also, the outermost fin 66A (louver 6)
4) The maximum diameter D is approximately 160 mm, and the louver 64
Has a length M of 40 mm in the optical path direction. Therefore, the louver 64 allows only the light incident at a predetermined range of the incident angle of the light emitted from the electrodeless light source 44 to pass through. That is, only the direct light emitted from the light emitting point 48 and the light reflected by the reflector 46 and incident on the louver 64 from substantially the same direction as the direct light of the reflected light can pass through the louver 64. I have.

As shown in FIG. 3, an integrated light meter 68 as a light amount integrating means is provided on the electrodeless light source 44 side of the louver 64.
Are arranged, and the light receiving section 68A of the integrating light meter 68 is provided.
Is inserted in the optical path between the interference filter 56 and the electrodeless light source 44. The integrated light meter 68 is connected to the control device 4
2 and the control device 42 includes an integrated light meter 68
The amount of exposure is calculated based on the input of (1), and when the amount of exposure reaches a predetermined value, the electrodeless light source 44 is turned off.

As shown in FIG. 5, the control device 42 includes a microcomputer 70. The micro computer 70 includes a CPU 72, a RAM 74, an R
It comprises an OM 76, an input / output port 78, and a bus 80 such as a data bus or control bus connecting these.

The input / output port 78 of the micro computer 70 is connected to a stepping motor 52, an electrodeless light source 44, a blower 40, a temperature sensor 58 and the like via a driver 82.

As shown in FIG. 1, a heat developing section 84 is provided on the right side of the casing 12 of the plate making apparatus 10, and a photosensitive material insertion hole 8 is provided above the heat developing section 84.
4A is drilled. Further, a heat roller 86 is built in the heat developing section 84. The heater (not shown) and the temperature sensor (not shown) of the heat roller 86 are connected to the control device 42, respectively, and the heat of the heat roller 86 is controlled by the control device 42 to a predetermined temperature. . Therefore, the photosensitive material insertion hole 84
A, the exposed photosensitive material 16 inserted from A
Along the heat roller 86 and about 3
During the 回 転 rotation, the photosensitive material 16 is conveyed while being in contact with the photosensitive material 16, thereby being thermally developed. Further, a photosensitive material discharge hole 84B is formed in the right side surface of the heat developing section 84, and the thermally developed photosensitive material 16 is discharged from the photosensitive material discharge hole 84B, and a lower portion of the photosensitive material discharge hole 84B is formed. Are accommodated in a tray 90 disposed in the tray.

The operation of the present embodiment will be described below with reference to the control flowchart of FIG. First, the operator places the original film 32, for example, Y, on the exposure unit 26 of the plate inspection making device 10.
Set the BK (Sumi) plate on top of the plate. in this case,
The operator inserts the positioning pins 30 on the near side of the exposure unit 26 into the positioning holes formed in the edge of each original film 32. Thereby, the positioning of each original film 32 can be performed easily and accurately.

Next, the operator cuts the photosensitive material 16 pulled out of the photosensitive material roll accommodating portion 14 into a predetermined length by the cutter 22 and closes the upper cover 34 by bringing the photosensitive material 16 into close contact with the original film 32.

On the other hand, when the power switch of the plate inspection making device 10 is turned on, the control device 42 operates to start the temperature control of the heat roller 86 of the heat developing section 84, and it is detected that the temperature reaches an optimum temperature for the heat development. A plate preparation state is entered, and the control routine of FIG. 6 is started.

When the control routine starts, step 1
In step 02, the blower 40 is turned on, and in step 104, it is determined which of the filter selection buttons 62A, 62B, 62C and 62D has been pressed.

In step 104, if the original film 32 to be exposed is selected as the Y plane, the rotation of the drive motor 52 is performed in step 106 so that the interference filter A corresponding to the original film 32 to be exposed is arranged at a predetermined position. The angle is controlled and inserted into the optical path. If the original film 32 to be exposed is selected as the M plate, the original film 3 to be exposed
In step 106, the rotation angle of the drive motor 52 is controlled so that the interference filter B corresponding to the second filter is disposed at a predetermined position, and the interference filter B is inserted into the optical path. Original film 3 to be exposed
2 is selected as the C plate, the original film 32 to be exposed is
In step 106, the rotation angle of the drive motor 52 is controlled so that the interference filter C corresponding to the above is disposed at a predetermined position, and is inserted into the optical path.

In the case of the negative type, in addition to the interference filters A, B, and C, a filter selection button 62D is pressed as a BK (sumi) plate original film. ) 57 is inserted.

As described above, since the interference filter 56 of the photosensitive wavelength range of the photosensitive material corresponding to the original film 32 is selected and inserted on the optical path, the photosensitive material is selected according to the type of the original film. Exposure can be performed with ultraviolet light in the photosensitive wavelength range.

In this way, the first interference filter corresponding to the first original film 32 to be exposed is selected (step 106).

In step 108, it is determined whether or not the exposure start button 63 has been pressed. When the exposure start button 63 is pressed, in step 112, the temperature T of the interference filter 57 inserted in the optical path is detected by the temperature sensor 58, and the temperature T of the interference filter 57 detected by the temperature sensor 58 is It is determined whether or not the predetermined value T0 is exceeded. If the temperature of the interference filter exceeds the predetermined value, the process proceeds to step 116, where the electrodeless light source 44 is not turned on, and the lamp 60 is turned on and off as a warning until the temperature of the interference filter falls below the predetermined value. Return to If the temperature of the interference filter is equal to or lower than the predetermined value, the process proceeds to step 114. In step 114, the exposure amount Pi (i = Y,
(Corresponding to any one of the M, C, and BK versions), and proceeds to step 118. In step 118, the electrodeless light source 44 is turned on to start exposure.

Therefore, it is possible to automatically prevent the exposure from being performed in a state where the filter characteristics of the interference filter have changed due to the heating. Therefore, the image of the color mixture or the like due to the change in the absorption characteristics of the filter of the interference filter due to the heating can be prevented. Quality deterioration can be prevented. Further, by blinking the lamp 60, it is possible to notify the worker that the temperature of the interference filter has risen.

Then, when the electrodeless light source 44 is turned on, in step 120, the measurement of the exposure amount is started based on the output from the integrating luminometer 68, and the routine proceeds to step 122.
In step 122, it is determined whether or not the exposure amount P has reached a predetermined exposure amount Pi. If the exposure amount P has reached the exposure amount Pi corresponding to the original film 32, the process proceeds to step 124, where the electrodeless light source 44 is turned off.

As described above, since the photosensitive material is irradiated with the exposure amount according to the type of the original film 32, even when the original film 32 is replaced, the irradiation is performed with the appropriate exposure amount according to the type of the original film 32. You. Thus, the operator can perform the operation without changing the exposure amount depending on the type of the original film 32. Further, the light receiving section 68A of the integrated light meter 68 is inserted in the optical path between the interference filter 56 and the electrodeless light source 44. Therefore, it is possible to reliably integrate the light amounts of the light emitted from the electrodeless light source 44 and before being incident on the interference filter 56. Therefore, even when the electrodeless light source 44 is deteriorated and the light amount is reduced, the necessary light amount can be applied to the photosensitive material 16 and the quality of an exposed image due to insufficient exposure can be prevented.

The blower 40 is kept in operation during the exposure of each original film, and when the operator opens the upper cover 34, the photosensitive material 16 is removed from the upper cover 3.
It is stuck on 6. For this reason, the worker is required to
The document film 32 can be easily replaced without the necessity of performing the alignment of the document film 6. When the exchange of the original film 32 is completed and the upper cover 34 is closed, the process returns to step 102, and waits until the next filter is selected by the filter selection button 62, and then the exposure of the next original film 32 is started. You. In this way, when the exposure of the first original film is completed, the process returns to step 104, and the same exposure operation is performed a total of four times for a negative photosensitive material and a total of three times for a positive photosensitive material. Done.

On the other hand, if the exposure of each original film 32 has been completed and the exposure stop button 65 has been pressed by the operator, it is determined in step 110 that the exposure operation has been completed. The control is stopped, and the control routine ends.

Thereafter, when the exposed photosensitive material 16 is inserted into the thermal developing section 84 from the photosensitive material insertion hole 84A by the operator, the photosensitive material 16 inserted into the thermal developing section 84 is
The sheet is nipped and conveyed by a pair of heat rollers 86, thermally developed, and discharged from the photosensitive material discharge hole 84 </ b> B to the tray 90.

Here, in this embodiment, the electrodeless light source 44 is used as the light source, and the ultraviolet light emitted from the electrodeless light source 44 is applied to the photosensitive material 16 via the interference filter 56. Therefore, the interference filter 56 transmits only the ultraviolet light in the ultraviolet photosensitive wavelength region that forms a predetermined dye image in one exposure, and does not transmit the ultraviolet light in the ultraviolet photosensitive wavelength region that forms another dye image. Therefore, it is possible to create a color proof with good color separation without causing color mixture. Since the high intensity ultraviolet light is emitted by using the electrodeless light source 44, the photosensitive material 16 is irradiated with the appropriate intensity ultraviolet light. Therefore, exposure of the photosensitive material can be completed in a short time without lengthening the exposure time.

Further, of the light emitted from the electrodeless light source 44, only the light incident on the louver 64 at an incident angle within a predetermined range passes through the louver 64. That is, only the direct light emitted from the light emitting point 48 and the light reflected by the reflector 46 and incident on the louver 64 from substantially the same direction as the direct light of the reflected light pass through the louver 64. For this reason, the angle of incidence of the incident light on the interference filter 56 can be limited, whereby the quality of the image can be improved.

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

As shown in FIG. 7, in the optical path between the interference filter 56 and the electrodeless light source 44, one end (light receiving portion) 67A of an optical fiber 67 as a light transmission cable is provided.
Is disposed, and the other end (light extraction portion) 67B of the optical fiber 67 is provided with an integrated light meter 6 as light amount integrating means.
Nine light receiving sections 69A. Therefore, part of the light emitted from the electrodeless light source 44 and before being incident on the interference filter 56 is emitted to the integrating light meter 69 via the optical fiber 67. Therefore, the interference filter 56
Even when the distance between the electrodeless light source 44 and the electrodeless light source 44 is narrow, the amount of light emitted from the electrodeless light source 44 and before entering the interference filter 56 can be reliably integrated. Therefore, the electrodeless light source 4
Even when the amount of light is reduced due to deterioration of the photosensitive material 4, the required amount of light can be applied to the photosensitive material 16 and the deterioration of image quality due to insufficient exposure can be prevented.

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

As shown in FIG. 8, a mirror 71 as a light reflecting means is disposed in an optical path between the interference filter 56 and the electrodeless light source 44. A part of the irradiation light is reflected toward the light receiving portion 73A of the integrating light meter 73 as the light amount integrating means.

Therefore, a part of the irradiation light from the electrodeless light source 44 is converted by the mirror 71 into the light receiving portion 73 of the integrating luminometer 73.
The light is reflected toward A and irradiates the integrated light meter 73. Therefore, even if the space between the interference filter 56 and the electrodeless light source 44 is narrow, the interference filter 56
It is possible to reliably integrate the amount of light before being incident on the. Accordingly, even when the electrodeless light source 44 is deteriorated and the light amount is reduced, the necessary light amount can be applied to the photosensitive material 16 and the deterioration of the image quality due to insufficient exposure can be prevented.

[0066]

Since the present invention has the above-described structure, the amount of light emitted from the light source before being incident on the interference filter can be reliably integrated, and the quality of an image can be prevented from being deteriorated due to insufficient exposure. Can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a plate inspection making device according to a first embodiment of the present invention, as viewed obliquely from the front.

FIG. 2 is a side sectional view showing an upper lid of the plate inspection making device according to the first embodiment of the present invention.

FIG. 3 is a schematic sectional view showing an exposure unit of the plate making apparatus according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a louver of the plate inspection apparatus according to the first embodiment of the present invention.

FIG. 5 is a control block diagram of the plate inspection creating apparatus according to the first embodiment of the present invention.

FIG. 6 is a control flowchart of the plate inspection creating apparatus according to the first embodiment of the present invention.

FIG. 7 is a schematic sectional view showing an exposure section of a plate inspection making device according to a second embodiment of the present invention.

FIG. 8 is a schematic sectional view showing an exposure section of a plate inspection making apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 plate inspection device 16 photosensitive material 44 electrodeless light source (light source) 49 interference filter unit 56 interference filter 68 integrated light meter (light amount integrating means) 68A light receiving unit 67 optical fiber (light transmission cable) 67A light receiving unit 67B light extraction unit 69 integrated light amount Total 69A Light receiving unit 71 Mirror (light reflecting means) 63 Integrated light meter 63A Light receiving unit

Claims (3)

(57) [Claims] 1. A light source for irradiating ultraviolet light to an ultraviolet-sensitive photosensitive material that forms a color image by irradiating and heating light in an ultraviolet wavelength range, and the ultraviolet light from the light source is used as an image original. A plate inspection creating apparatus that creates a plate inspection by irradiating the photosensitive material through a light source, and an interference filter disposed between the light source and the image document; and an interference filter between the interference filter and the light source. A plate light quantity integrating means in which a light receiving section is inserted in an optical path. 2. A light source for irradiating ultraviolet light to an ultraviolet-sensitive photosensitive material that forms a color image by irradiating and heating light in an ultraviolet wavelength range, and the ultraviolet light from the light source is used as an image original. A plate inspection creating apparatus for creating a plate inspection by irradiating the photosensitive material through a light source, an interference filter disposed between the light source and the image document, and a light amount for integrating the light amount of the light source. A plate inspection system comprising: an integrating means; and a light transmission cable in which a light receiving section is arranged in an optical path between the interference filter and the light source, and a light extracting section is arranged toward the light quantity integrating means. Creating device. 3. A light source for irradiating ultraviolet light to an ultraviolet-sensitive photosensitive material which forms a color image by irradiating light in an ultraviolet wavelength range and heating the ultraviolet light, wherein the ultraviolet light from the light source is used as an image original. A plate inspection creating apparatus for creating a plate inspection by irradiating the photosensitive material through a light source, an interference filter disposed between the light source and the image document, and a light amount for integrating the light amount of the light source. Integrating means, and a light reflecting means arranged in an optical path between the interference filter and the light source to reflect a part of the irradiation light from the light source toward the light amount integrating means,
A plate inspection making device, comprising: