JP2004151581A - Image printing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To form an image in which a liquid crystal element image is arranged at a plurality of places relative to one liquid crystal element of a liquid crystal panel by making an exposure lens deviated from the optical axis of a light source optical system for example, rotating it around this optical axis, thereby varying the image-forming position of image-forming light, in exposing on a photosensitive material the image displayed in the liquid crystal panel. <P>SOLUTION: The image forming light passed through the liquid crystal panel 61 is made to pass through the exposure lens 63 in which the optical axis is deviated from that of the light source optical system emitting light to the liquid crystal panel 61. The image forming light is then made to form the image on a photographic paper 5 for printing. The image forming light passed through the exposure lens 63 forms the image at the position deviated from the optical axis of the light source optical system; therefore, by rotating the exposure lens 63 approximately at 90° and successively performing exposure, the image can be obtained in a high density liquid crystal element image. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image printing apparatus for printing an image displayed on a liquid crystal panel on a photosensitive material such as photographic paper.
[0002]
[Prior art]
The development of digital technology has also contributed to the technology of printing photographs, converting the original image formed on the film by photography into digital image data, reproducing the original image based on the image data on the LCD panel, and printing this reproduced image. 2. Description of the Related Art Image printing apparatuses for printing on paper have become widespread. As shown in FIG. 5, the light transmitted through the liquid crystal panel 201 is transmitted through the exposure lens 202 and forms an image on the photographic paper 203, so that the image reproduced on the liquid crystal panel 201 is printed on the photographic paper 203. It is. The liquid crystal panel is configured by arranging a plurality of liquid crystal elements, each of which has a controlled transmission state, and an original image can be reproduced on the liquid crystal panel by associating the image data with each element. If light is transmitted through the original image reproduced on the liquid crystal panel, it can be printed on a photosensitive material.
[0003]
By the way, the liquid crystal panel has a structure in which liquid crystal elements are arranged vertically and horizontally and the like, and there is a gap between the liquid crystal elements where no element exists. If the density of the liquid crystal element is high, the gap becomes small, and the image obtained by printing on the photosensitive material with the liquid crystal panel is formed of a high-density liquid crystal element image, and reproducibility more faithful to the original image is obtained. . However, there is a limit to increasing the density of the liquid crystal elements due to reasons such as securing a wiring space for each element and manufacturing costs.
[0004]
For this reason, in the image printing apparatus disclosed in Patent Literature 1, the number of liquid crystal element images on the photosensitive material is increased in a pseudo manner by printing one liquid crystal element on a plurality of portions on the photosensitive material to form the photosensitive material. In some cases, a technique of interpolating between the liquid crystal element images is used. That is, this image printing apparatus is composed of a plurality of liquid crystal elements arranged vertically and horizontally, electrically controls a transmission state of each liquid crystal element, displays an image corresponding to each liquid crystal element, and outputs light from a light source to each of the liquid crystal elements. A liquid crystal panel that transmits light in a transmission state corresponding to the liquid crystal element, and is disposed on an optical axis of an optical path transmitted through the liquid crystal panel, and an optical axis at the time of emission is an optical axis parallel to the optical axis at the time of incidence. Deflecting means for deflecting the light at the time of incidence and at the time of emission according to the inclination angle having the optical axis as a normal line, and the same. And positioning means for allocating and positioning at different angles. As the deflecting means, there is adopted a structure in which a glass plate disposed in an image forming optical path is swingably provided about an axis orthogonal to the optical axis.
[0005]
Patent Document 2 proposes an image printing apparatus in which a printed image created by slightly vibrating a color liquid crystal display device apparently increases a contrast level and improves saturation. As a mechanism for minutely vibrating the liquid crystal display device, a roller rotatable around a direction parallel to a side portion of the liquid crystal display device is supported on a frame portion of the liquid crystal display device supported by elastic support columns. There is described a structure in which an eccentric cam is brought into contact with a roller, and the eccentric cam is rotated by a motor.
[0006]
Also, when an image displayed on a liquid crystal display device is reduced and formed on a photosensitive material to form an image as in an image printing device described in Patent Document 3, the entire liquid crystal display device is vibrated by a rotational motion having a small radius. There are things that I tried to do. This is a structure in which shafts that rotate eccentrically are provided at four corners of a support frame of a liquid crystal display device so as to penetrate therethrough, and a timing belt is wound around pulleys fitted on each of the four shafts. The liquid crystal display device is made to circularly move by the eccentric movement of the pulley caused by the endless circulating movement of the timing belt by the output rotation of the motor.
[0007]
[Patent Document 1]
JP 09-080634 A [Patent Document 2]
JP-A-11-142978 [Patent Document 3]
JP-A-2002-082390
[Problems to be solved by the invention]
However, the following problem may occur in the above-described conventional image printing apparatus that interpolates between liquid crystal element images. In the interpolation between the liquid crystal element images by the image printing apparatus described in Patent Document 1 and Patent Document 2, the liquid crystal element image shown in FIG. 6A is shifted to the respective positions shown in FIG. To artificially increase the density of the liquid crystal element image. That is disposed at a position where the liquid crystal element image in FIG. (B) is shifted vertically, the case where the liquid crystal device image P ₁₀ is exposed to a position downward of the liquid crystal element images P _11, figure ( In the case c), the liquid crystal element image is arranged at a position displaced vertically and obliquely. The arrangement density of the liquid crystal element image is apparently doubled as compared with the case where the position is not shifted, and the portion where the liquid crystal element image is formed is increased. However, in the states shown in FIGS. 6B and 6C, since the liquid crystal element images are formed at a plurality of positions on the straight line, the liquid crystal element images in the direction intersecting the straight line are formed. In this relation, a gap is still formed between the liquid crystal element images. For this reason, interpolation is not sufficiently performed, and fine unexposed portions may be generated in an image printed on the photosensitive material.
[0009]
The mechanism for shifting the optical axis of the gap between the liquid crystal element images remaining as the unexposed portion in the above-described conventional image printing apparatus causes the glass plate to swing about a direction orthogonal to the optical axis in the case of Patent Document 1. This is because the structure disclosed in Patent Document 2 is a structure in which the liquid crystal display device is linearly moved back and forth, and can only be shifted between two positions on a straight line.
[0010]
Further, in the image printing apparatus described in Patent Document 3, the unexposed portion is reduced because the liquid crystal display device makes a circular motion, but since a belt mechanism using a timing belt is used to drive the liquid crystal display device, the following is required. Such a problem may occur. This type of image printing apparatus is installed in a so-called lab such as a photo shop or a photo development shop that performs processing from development of a photographed film to printing, and is used when processing a large amount of film. For this reason, this image printing apparatus is used very frequently, and is required to have durability. However, since the belt is driven by the timing belt, the belt is likely to elongate. In the stretched state, the desired circular motion cannot be performed, and the desired effect of reducing the unexposed portions may not be achieved. . Further, the belt in the stretched state is easily broken. If it stretches or breaks, the belt must be replaced. In addition, the timing belt must have elasticity and flexibility, and since rubber is generally used as a material, friction occurs between the pulley and the pulley during the operation of the endless circulation movement, and fine powder is generated. May occur. If the generated fine powder adheres to the photosensitive material, the print becomes a defective product, so it is necessary to quickly replace the belt in which the fine powder may be generated. In these cases, it takes time to replace the belt, and the printing of the film may be stalled due to the stoppage of the image printing apparatus during that time.
[0011]
Therefore, the present invention prints an arbitrary number of positions with a single element, thereby printing the liquid crystal element images also in the gaps between the liquid crystal element images, and minimizing the unexposed portions of the image printed on the photosensitive material. It is another object of the present invention to provide an image printing apparatus in which the durability of components such as a driving mechanism of an optical member for moving a liquid crystal element image is improved and the operation time is not carelessly limited.
[00012]
[Means for Solving the Problems]
As a technical means for achieving the above object, an image printing apparatus according to the present invention forms an image displayed on a liquid crystal panel in which a large number of liquid crystal elements are arranged vertically and horizontally on a photosensitive material and exposes the image. In this case, a liquid crystal element image formed by one liquid crystal element is formed at a plurality of locations, and an image displayed on the liquid crystal panel is formed on a photosensitive material in an image printing apparatus that forms an image on the photosensitive material. A lens rotating means for supporting the exposure lens so as to be rotatable in a plane perpendicular to the optical axis; rotating the exposure lens by the rotating means; stopping the rotation at a plurality of positions; The exposure corresponding to the position is superimposed and applied.
[0013]
By rotating the exposure lens in a plane perpendicular to the optical axis, the in-focus state is maintained at any position, and the image position on the photosensitive material also moves in accordance with the position of the exposure lens. If the movement is stopped at 90 ° positions and the exposure is performed sequentially, an image having no unexposed portions can be formed, and apparently the density of the liquid crystal element image increases, and the unexposed portions of the printed image are removed. Removed as much as possible.
[0014]
In the image printing apparatus according to the second aspect of the present invention, when an image displayed on a liquid crystal panel in which a large number of liquid crystal elements are arrayed vertically and horizontally is formed on a photosensitive material and exposed, a single liquid crystal element is used. In an image printing apparatus for forming an image on a photosensitive material by forming an image of the liquid crystal element at a plurality of locations, an exposure lens for forming an image displayed on the liquid crystal panel on the photosensitive material is perpendicular to the optical axis. The exposure lens is turned by the turning means, and the photosensitive material is exposed while the turning is continued.
[0015]
That is, the exposure is applied while the rotation of the exposure lens is continued. When forming a liquid crystal element image at a plurality of positions, the liquid crystal element image can be formed by stopping the exposure lens at each corresponding position and applying exposure, but by rotating and exposing, the liquid crystal element image can be formed within the exposure time. All the points on the locus drawn by are exposed, and the unexposed portion due to the gap between the pixels can be minimized, and the opening and closing of the exposure shutter can be performed only once.
[0016]
According to a third aspect of the present invention, in the image printing apparatus, the lens turning means holds the exposure lens in a lens holder rotatable around an optical axis, and biases the exposure lens with respect to the lens holder. And a holder rotating mechanism for rotating the lens holder.
[0017]
Since the exposure lens is biased and held with respect to the lens holder, when the lens holder rotates, the exposure lens turns around the center of rotation. This makes it possible to change the image forming position of the image forming light transmitted through the exposure lens. By applying exposure at a plurality of positions, liquid crystal element images can be formed at the plurality of positions.
[0018]
An image printing apparatus according to a fourth aspect of the invention is characterized in that the lens barrel of the exposure lens is attached to the lens holder via an adjustment block.
[0019]
Since the lens barrel is mounted via the adjustment block, by adjusting the position of the adjustment block with respect to the lens holder, it is possible to adjust the amount and posture of the lens with respect to the center of rotation of the lens holder, the focus and the magnification. The adjustment of the position in the optical axis direction can be set to an optimum state.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an image printing apparatus according to the present invention will be specifically described based on the illustrated preferred embodiments.
[0021]
FIG. 4 shows a schematic structure of a printer processor 1 provided with an image printing apparatus according to the present invention. The printer processor 1 exposes the image reproduced on the liquid crystal panel 61 based on the image data of the photographic original image recorded on the provided photographic film such as a negative film or a positive film to a photographic paper 5 as a photosensitive material and prints the image. This is a device that completes a photographic print by performing development, fixing, washing and drying. The exposure and printing processes on the photographic paper 5 are performed by the printer unit 7, and the processes from development to drying are performed by the processor unit 9.
[0022]
The printing paper 5 is stored in a magazine 5a while being wound on a reel (not shown), and is supplied to the printer processor 1 together with the magazine 5a. The photographic paper 5 is pulled out of the magazine 5a by a pair of pull-out rollers (not shown), and the guide rollers 13a and 13b are separated by guide rollers 13a and 13b vertically spaced apart from each other by a distance necessary for a printing operation described later. The printing paper 5 is fed in the vertical direction. The photographic paper 5 on the guide rollers 13a and 13b is exposed to light, and the image displayed on the liquid crystal panel 61 is printed.
[0023]
A buffer 15 is formed downstream of the lower guide roller 13b by bending the photographic paper 5 by a required amount, and is provided to the processor 9 via the buffer 15. In the processor unit 9, the photographic paper 5 is sequentially fed, and the developing, fixing, and washing processes are performed. The washed photographic paper 5 is dried in the drying unit 17 and cut by the cutter 19 in accordance with the frames formed in a predetermined area of the photographic paper 5.
[0024]
The liquid crystal panel 61 is placed on the work table 25. A light source unit 27 is provided below the work table 25. The light source unit 27 is provided with a light source 27a. Light emitted from the light source 27a is reflected by a reflecting mirror 27b, passes through a color correction filter 27c, and irradiates a liquid crystal panel 61 mounted on a work table 25. I have to do it.
[0025]
An exposure lens 63 and a reflecting mirror 31 are sequentially provided above the work table 25. Light transmitted through the liquid crystal panel 61 passes through the exposing lens 63 and is reflected by the reflecting mirror 31, and the reflected light is At the exposure position in the middle of feeding in the vertical direction by the guide rollers 13a and 13b, the light enters the photographic paper 5 and is exposed. Further, a lens turning means is connected to the exposure lens 63, and the exposure lens 63 is turned as described later.
[0026]
1 to 3 show a schematic structure of a mechanism for moving the exposure lens 63. FIG. 3 is a view for explaining a state in which the exposure lens 63 is moved to shift the liquid crystal element image. FIG. 3A shows liquid crystal element images P ₁₀ , P ₂₀ , P formed by exposing a photosensitive material. ₃₀ , P ₄₀ , P ₅₀ , and P ₆₀ are shown. In FIG. 6B, the optical axis of the exposure lens 63 (hereinafter, referred to as “sub-optical axis S”) coincides with the optical axis of the optical system of the light source (hereinafter, referred to as “main optical axis M”). 3 shows a liquid crystal element image P formed by rotating the exposure lens 63 around the main optical axis M and exposing it at a desired position. The swivel, with reference to FIG. (A), description will be given of a liquid crystal device image P _50. The straight line passing through the respective centers of the liquid crystal element image P ₅₀ and the liquid crystal device image P ₂₀ and L _1, a straight line passing through the respective centers of the liquid crystal element image P ₅₀ and the liquid crystal element image P ₆₀ and L _2. In addition, as the midpoint between the liquid crystal element image _{P 50} and the liquid crystal element image _{P 60,} a straight line parallel to the straight line _{L 1} and _{L 3,} through the intermediate point between the liquid crystal element image _{P 50} and the liquid crystal device image _{P 20} , and _{L 4} a straight line parallel to the straight line _{L 2.} Assuming circle passing through the intersections of these four straight lines L ₁ ~L _4, if caused to pivot the liquid crystal element images P ₅₀ the center of the circle as the axis, the center of the liquid crystal element images P ₅₀ is along this circle To make a turn. Then, by forming a liquid crystal element image _{P 50} above each intersection, and FIG. 3 (b) as shown in the and the liquid crystal element image _{P 50, P 51, P 52} , P 53 are formed, adjacent the liquid crystal element image that gap between P ₂₀ and the liquid crystal element image _{P 60} would be eliminated. Accordingly, the exposure lens 63 having the sub optical axis S deviated from the main optical axis M of the light source optical system is rotated about the main optical axis M so that the center of each liquid crystal element image P passes through the intersection. Just do it. That is, if the exposure lens 63 is moved so that one liquid crystal element of the liquid crystal panel 61 is located at a position between another liquid crystal element adjacent thereto, all the liquid crystal elements of the liquid crystal panel 61 become liquid crystal adjacent thereto. The liquid crystal element image can be formed between the liquid crystal element images formed from the liquid crystal panel 61. Since the distance between the liquid crystal elements of the liquid crystal panel 61 is generally about 60 μm, for example, when the size of the liquid crystal element is 30 μm and the printing magnification is 1 ×, the liquid crystal element image moves on a circular orbit on the photosensitive material. In this case, if the exposure lens 63 is moved on a circumference of about 21 μm in diameter so as to make a circular motion of about 42 μm in diameter, an image with the least unexposed portions can be obtained.
[0027]
1 and 2 show a schematic structure of a mechanism for rotating the exposure lens 63. FIG. The exposure lens 63 is accommodated and held in a lens frame 71 which is a lens barrel, and the lens frame 71 is in a state of being inserted into a receiving hole 72 a of a lens holder 72. An annular receiving ring 73 is provided on the upper surface of the lens holder 72. A pulley portion 72b is formed below the lens holder 72. The lens frame 71 has an upper large-diameter portion 71a and a lower small-diameter portion 71b formed in a continuous cylindrical shape, and the receiving ring 73 is provided so as to be fitted to the small-diameter portion 71b. The lens holder 72 is held by a support ring 74, and the receiving ring 73 is placed on the upper surface of the support ring 74. A bearing 75 is fitted on the outer peripheral surface of the support ring 74, and the bearing 75 is held by a housing part 76 a opened to the support base 76. Therefore, the exposure lens 63 is held by the support base 76 so as to be pivotable. ing.
[0028]
A drive motor 77 is attached to the support base 76, and a drive belt 79 is stretched over a drive pulley 78 fitted on an output shaft 77 a of the drive motor 77 and a pulley portion 72 b of the lens holder 72. I have.
[0029]
As shown in FIG. 2, three positioning blocks 80 are attached to the upper surface of the support ring 74 at substantially equal intervals. Note that the positioning block 80 and the receiving ring 73 constitute an adjustment block. The positioning block 80 includes a fixed block 80a and a movable block 80b located inside the fixed block 80a. The fixing block 80a is provided with an adjusting screw 80c so that it can be operated from outside the fixing block 80a. The adjusting screw 80c is provided to penetrate the fixed block 80a, and its tip is engaged with an engaging recess 80d formed on the outer surface of the movable block 80b, that is, the surface facing the fixed block 80a. Therefore, when the adjusting screw 80c is rotated, the movable block 80b moves forward and backward with respect to the fixed block 80a according to the direction.
[0030]
Through holes 73a are formed in the receiving ring 73 at substantially equal intervals at three locations, and fixing screws 81 (see FIG. 1) are loosely inserted into the through holes 73a. For this reason, the receiving ring 73 is slightly movable when the fixing screw 81 is not tightened. In this state, the sub optical axis S of the exposure lens 63 is fixed by adjusting the amount of deviation from the main optical axis M and the like.
[0031]
Although not shown, an initial position detecting means for detecting an initial position of the exposure lens 63 is provided.
[0032]
The operation of the embodiment of the image printing apparatus of the present invention configured as described above will be described below.
[0033]
The receiving ring 73 is fitted into the lens frame 71, the receiving ring 73 is placed on the supporting ring 74, the fixing screw 81 is loosely inserted into the through hole 73a, and the receiving ring 73 is temporarily fixed to the supporting ring 74. . In this state, one adjustment screw 80c of the three positioning blocks 80 is tightened or loosened. By tightening the adjustment screw 80c, the movable block 80b moves in the direction away from the fixed block 80a, that is, inward. By loosening the adjusting screw 80c, the movable block 80b moves toward the fixed block 80a, that is, moves outward. Thereby, the receiving ring 73 can be biased with respect to the support ring 74. Since the lens frame 71 is accommodated in the receiving ring 73, the sub optical axis S of the exposure lens 63 held by the lens frame 71 can be deviated from the main optical axis M.
[0034]
When the position of the exposure lens 63 is determined, the fixing screw 81 is tightened to fix the receiving ring 73 to the support ring 74, and the sub-optical axis S of the exposure lens 63 is shifted from the main optical axis M by a predetermined distance. It is kept biased by the amount. In this state, the image displayed on the liquid crystal panel 61 can be printed on the printing paper 5. At the time of printing, the light transmitted through the liquid crystal panel 61 is transmitted through the exposure lens 63 deviated by the predetermined amount to form an image on the photographic paper 5, so that printing can be performed.
[0035]
As shown in FIG. 1, the image-forming light transmitted through the liquid crystal panel 61 is transmitted through the exposure lens 63, forms an image on the photographic paper 5, and gives exposure. At this time, when the main optical axis M and the sub optical axis S coincide with each other, the image formed on the liquid crystal panel 61 is at the intersection of the main optical axis M and the sub optical axis S with the printing paper 5. Form an image. On the other hand, when the main optical axis M does not coincide with the sub optical axis S, the image forming position on the photographic paper 5 is shifted from the main optical axis M. This shift amount changes according to the amount of deviation between the sub optical axis S and the main optical axis M. Therefore, by setting the amount of deviation of the sub optical axis S from the main optical axis M to a desired value, the position of the liquid crystal element image printed on the printing paper 5 can be adjusted. Then, by rotating the exposure lens 63 about the main optical axis M and giving an exposure at a rotation angle of every 90 °, the photographic paper 5 is not exposed to the liquid crystal element image P as shown in FIG. It can be printed without parts.
[0036]
To rotate the exposure lens 61, the drive motor 77 is operated. That is, the rotation of the output shaft 77 a of the drive motor 77 is transmitted from the drive pulley 78 to the pulley portion 72 b of the lens holder 72 via the drive belt 78. Therefore, the pulley portion 72b rotates, and the exposure lens 63 linked to the lens holder 72 rotates. Therefore, if the exposure lens 63 is sequentially rotated by approximately 90 ° to perform exposure, the liquid crystal element image can be arranged so that an unexposed portion does not occur.
[0037]
In the above-described embodiment, a mechanism for rotating the exposure lens 63 by belt driving has been exemplified. However, a driving mechanism using a gear device may be used. That is, a drive-side gear is fitted to the output shaft of the drive motor 76, a driven-side gear is formed on the outer peripheral surface of the holder accommodating ring member 72, and rotation of the drive motor is transmitted from the drive-side gear through a desired gear train. It can also be transmitted to the driven gear.
[0038]
Further, in this embodiment, the structure in the case where the transmission type is used as the liquid crystal panel 61 has been described, but the reflection type can be used as the liquid crystal panel.
[0039]
【The invention's effect】
As described above, according to the image printing apparatus of the present invention, since the image forming position of the image forming light changes due to the rotation of the exposure lens, if the exposure is performed at each position, the gap between the liquid crystal element images is reduced. No image is formed on the photosensitive material. For this reason, the unexposed portion of the liquid crystal element image is eliminated, the saturation and density of the printed print are improved, and a visually appropriate print can be obtained. Further, unlike the case where the plate-shaped liquid crystal panel is moved in the plane, there is no need to provide a mechanism for guiding the movement, and the lens barrel has a cylindrical shape and is rotated. Because it is a mechanism, standard bearings can be used, and durability and reliability can be secured at low cost. Further, the belt of the drive mechanism for rotating the exposure lens has a small load applied thereto and may be short, so that there is little fear of elongation or breakage, and dust due to abrasion hardly occurs.
[0040]
According to the image printing apparatus of the second aspect of the present invention, since the liquid crystal element image is formed by exposing while rotating the exposure lens, one frame of exposure can be performed by one opening and closing of the shutter. The exposed part can be made as small as possible. Further, unlike the case where the plate-shaped liquid crystal panel is moved in the plane, there is no need to provide a mechanism for guiding the movement, and the lens barrel has a cylindrical shape and is rotated. Because it is a mechanism, standard bearings can be used, and durability and reliability can be secured at low cost. Further, the belt of the drive mechanism for rotating the exposure lens has a small load applied thereto and may be short, so that there is little fear of elongation or breakage, and dust due to abrasion hardly occurs.
[0041]
According to the image printing apparatus of the third aspect of the present invention, since the exposure lens is rotated by rotating the lens holder holding the exposure lens, the exposure lens can be reliably rotated with a simple structure. Can be. Further, unlike the case where the plate-shaped liquid crystal panel is moved in the plane, there is no need to provide a mechanism for guiding the movement, and the lens barrel has a cylindrical shape and is rotated. Because it is a mechanism, standard bearings can be used, and durability and reliability can be secured at low cost. Further, the belt of the drive mechanism for rotating the exposure lens has a small load applied thereto and may be short, so that there is little fear of elongation or breakage, and dust due to abrasion hardly occurs.
[0042]
According to the image printing apparatus of the fourth aspect of the present invention, the exposure lens can be easily moved, and the position of the exposure lens can be easily adjusted because the adjustment is performed on the positioning block. Can be done. In addition, the output of the drive motor can be transmitted to the exposure lens with a simple structure. Further, unlike the case where the plate-like liquid crystal panel is moved in the plane, there is no need to provide a mechanism for guiding the movement, and the lens barrel has a cylindrical shape and is rotated. Because it is a mechanism, standard bearings can be used, and durability and reliability can be secured at low cost. Further, the belt of the drive mechanism for rotating the exposure lens has a small load applied thereto and may be short, so that there is little fear of elongation or breakage, and dust due to abrasion hardly occurs.
[Brief description of the drawings]
FIG. 1 is a schematic view showing a part of an exposure apparatus that transmits image forming light transmitted through an image displayed on a liquid crystal panel to an exposure lens and gives exposure to a photosensitive material, and a mechanism for rotating the exposure lens. It is a front view which shows the schematic structure of.
FIG. 2 is a schematic plan view of the turning mechanism shown in FIG.
FIG. 3 is an enlarged view of the surface of a photosensitive material for explaining the principle of giving exposure in the image printing apparatus according to the present invention. FIG. 3 (a) shows a state where respective liquid crystal element images are printed at predetermined positions. b) shows a state in which the liquid crystal element image is rotated and printed at approximately 90 ° positions.
FIG. 4 is a structural diagram illustrating a schematic structure of a printer processor provided with the image printing apparatus according to the present invention.
FIG. 5 is a schematic perspective view showing a part of an exposure apparatus for applying exposure to a photosensitive material using a liquid crystal panel.
6A and 6B are diagrams for explaining a conventional principle of exposing a liquid crystal element image while shifting it, and correspond to FIG. 3; FIG. 6A shows a state in which each liquid crystal element image is printed at a predetermined position; Indicates a state in which the liquid crystal element image is moved and printed.
[Explanation of symbols]
1 printer processor 5 photographic paper (photosensitive material)
25 work table 27 light source 27a light source 27b reflector 27c color correction filter 31 reflector 61 liquid crystal panel 63 exposure lens 71 lens frame 72 lens holder 72a receiving hole 72b pulley 73 receiving ring 73a through hole 74 support ring 75 bearing 76 support base 76a Housing part 77 Drive motor 77a Output shaft 78 Drive side pulley 79 Drive belt 80 Positioning block 80a Fixed block 80b Movable block 80c Adjusting screw 80d Engagement concave part 81 Fixing screw M Main optical axis S Secondary optical axis

Claims (4)

When an image displayed on a liquid crystal panel in which a large number of liquid crystal elements are arrayed vertically and horizontally is formed on a photosensitive material and exposed, a liquid crystal element image formed by one liquid crystal element is formed at a plurality of locations. In an image printing apparatus for forming an image on a photosensitive material,
An exposure lens that forms an image displayed on the liquid crystal panel on a photosensitive material is provided with a lens turning unit that supports the exposure lens so as to be turnable in a plane perpendicular to the optical axis, and the turning unit turns the exposure lens.
Stop the turning at a plurality of positions,
An image printing apparatus, wherein exposures corresponding to the plurality of positions are applied to a photosensitive material in an overlapping manner. When an image displayed on a liquid crystal panel in which a large number of liquid crystal elements are arrayed vertically and horizontally is formed on a photosensitive material and exposed, a liquid crystal element image formed by one liquid crystal element is formed at a plurality of locations. In an image printing apparatus for forming an image on a photosensitive material,
An exposure lens that forms an image displayed on the liquid crystal panel on a photosensitive material is provided with a lens turning unit that supports the exposure lens so as to be turnable in a plane perpendicular to the optical axis, and the turning unit turns the exposure lens.
An image printing apparatus, wherein the photosensitive material is exposed while the rotation is continued. The lens turning means,
Holding the exposure lens in a lens holder that can rotate around the optical axis,
Biasing and holding the exposure lens with respect to the lens holder,
The image printing apparatus according to claim 1, further comprising a holder rotating mechanism that rotates the lens holder. 4. The image printing apparatus according to claim 3, wherein the lens barrel of the exposure lens is attached to the lens holder via an adjustment block.

Images