JP2001147492A - Rotation adjusting mechanism for image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange a circular-arc guiding surface taking the center axis of the image display screen of a CRT as a center of curvature on the supporting frame of a CRT frame in order to adjust the in-plane tilt of the image display screen of the CRT without moving the center of the image display screen, and to displace the CRT frame with rotation along the guiding surface. SOLUTION: The circular-arc guiding surfaces 81a and 81a taking the center axis of the image display screen 4a of the CRT 4 as the center of curvature are arranged on the supporting frame 74, and the rotational displacement of the image display screen 4a is quantified by the rotation adjustment angle of screw members 83L and 83R.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotation adjusting mechanism for an image display device such as a CRT, and more particularly, to an image display device which is rotationally displaced around a central axis of the image display surface. Related to a mechanism for adjusting the inclination of.

[0002]

2. Description of the Related Art A general photographic printing apparatus used conventionally has, for example, a structure schematically shown in FIG. That is, on the upper part of the main body 2 of the photographic printing device 1,
A light source unit 42 for illuminating the print target frame set in the negative carrier unit 41 is provided. Light transmitted through the print target frame is imaged on a photosensitive material (paper) 44 by a film image print lens 43. Paper 4
4 is pulled out from the roll paper 45 and set at the printing position, and the exposed paper 44 is
After being sent to the development processing unit 47 through the developing unit 6 and developed, it is dried in the drying unit 48 and sent to the sorter unit 50. A space 51 exists between the film image printing lens 43 and the paper print position below the film image printing lens 43. In this space 51, an optical unit for performing special printing is detachably mounted. It has become so.

Recently, with the development of digital cameras and the like,
It is possible to selectively print a film image (analog image) recorded on photographic film and a video image (digital image) displayed on a CRT on a photosensitive material, or to synthesize an analog image and a digital image. Demand for color photographic printing apparatuses is increasing.

A photographic printing apparatus for selectively printing such an analog image and a digital image displayed on a CRT on a photosensitive material is disclosed in, for example, JP-A-63-257742. In the photographic printing apparatus disclosed in this publication, an analog image printing lens and a photosensitive material are sequentially arranged below a photographic film, and a CRT having an image display surface facing upward is arranged alongside the photosensitive material. A first mirror (sub-mirror) above the light-sensitive material and a second mirror above the photosensitive material
Mirrors (main mirrors) are arranged, and a lens for digital image printing is arranged between the mirrors. At the time of digital image printing, light from the CRT is guided to the photosensitive material via the first and second mirrors, and analog image printing is performed. Sometimes the first and second mirrors are configured to be pulled out of the optical path.

However, as described above, there is an increasing demand for a photographic printing apparatus capable of selectively printing a film image as an analog image and a video image displayed on a CRT as a digital image on a photosensitive material. That said, most small labs (labs) currently have photographic printing equipment dedicated to analog image printing, and can process both analog and digital images. A so-called digital kit, which can add a digital image printing function by a relatively simple modification to a conventional photographic printing apparatus having only an analog image printing function because a simple photographic printing apparatus is expensive. Is required.

This digital kit comprises a digital image display unit including a CRT as a means for displaying a video image, and an optical unit including a mirror and a lens for exposing the image displayed on the CRT onto paper. Will be.

[0007]

Incidentally, in the photographic printing apparatus 1 to which the above-mentioned digital kit is retrofitted, when printing a video image, the image may be printed on the paper at an inclined angle. This phenomenon occurs for the following reasons.

(1) The position of the paper is shifted from the exposed image due to the paper being conveyed obliquely with respect to the exposed image. (2) The image is printed obliquely due to the variation of the optical unit. (3) The display position of the image on the CRT varies, and the display image itself is inclined.

In order to solve these problems, it is conceivable to electrically adjust the display screen of the CRT and adjust the inclination of the image by correcting it. However, in order to electrically control the display of the image, A circuit board for that purpose is required, which increases the cost.

Further, since the CRT is easily affected by geomagnetism, the image is likely to be shifted depending on the installation location and the orientation of the photographic printing apparatus 1. Therefore, when a digital kit is mounted on the photographic printing apparatus 1, the CRT must be installed. It is necessary to adjust the inclination of the image display surface of the CRT in each of the individual photoprinting apparatuses by supporting the image display surface so as to be rotatable about the central axis thereof.

In view of the above-mentioned circumstances, an object of the present invention is to provide a rotation adjusting mechanism of an image display device which is suitable, for example, when the above-mentioned digital kit is attached to a photographic printing device dedicated to film image printing. .

[0012]

According to the present invention, there is provided a rotation adjusting mechanism for an image display device, comprising: a first frame to which the image display device is fixed; a second frame supporting the first frame; An arcuate guide provided on the second frame to guide the first frame so that the image display device fixed to the frame can be rotationally displaced around a central axis perpendicular to the image display surface. And an adjusting screw member attached to the second frame so as to press the first frame to rotate and displace the first frame along the arc-shaped guide surface. It is assumed that.

The arcuate guide surface is formed with the center axis of the image display surface as the center of curvature.

[0014] In one embodiment of the present invention, the image display device is arranged such that the image display surface of the first image display device faces upward.
Consisting of a CRT mounted on a frame of
Has a square front panel parallel to the image display surface of the CRT and mounted on the second frame, and two adjacent corners of the front panel are formed on the upper surface of the second frame. Are configured to be guided along a pair of arcuate guide surfaces provided in the first and second guides.

[0015]

According to the present invention, the second frame is provided with an arc-shaped guide surface for guiding the first frame so as to be able to rotate and displace about a central axis perpendicular to the image display surface. Therefore, by the rotation of the adjusting screw member,
The tilt of the image display surface within the surface can be adjusted without moving the center of the image display surface.

Further, since the rotation angle of the screw member is proportional to the amount of movement in the axial direction, the amount of rotation movement of the image display surface can be quantified by the rotation adjustment angle of the screw member. It has the advantage of being easier.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 show perspectively only essential parts of a photographic printing apparatus having substantially the same configuration as that shown in FIG. 19, with a digital kit to which the present invention is applied. It is a schematic front view and a side view. FIG. 3 is an explanatory diagram schematically showing the configuration of the digital kit.

In the figure, a digital kit 3 includes a digital image display unit 5 fixedly attached to the front surface of a main body 2 of a photographic printing apparatus 1 including a CRT 4 with an image display surface 4a facing upward, and The optical unit 6 is detachably mounted from the front side in a space 51 of FIG. 19 along a fixed rail (not shown).

The optical unit 6 includes a filter turret 8 having three color filters 7R, 7G, and 7B.
And a sub-mirror 9 for horizontally reflecting image light transmitted vertically upward through one of the three color filters 7R, 7G, 7B of the filter turret 8, and an image light reflected by the sub-mirror 9. 10A and 10B having a horizontal optical axis for forming an image on paper
And a main mirror 11 for reflecting image light emitted from one of the lenses 10A and 10B toward paper.

The filter turret 8 is a CRT 4
Is provided to convert a red component image, a green component image, and a blue component image, which are monochrome images, sequentially displayed in three times on the image display surface 4a into a red image, a green image, and a blue image, respectively. . The main mirror 11
Is provided to switch between film image printing and digital printing.
The main mirror 11 is guided by rails 16 and 16 to be described later and retracts to the left in FIG.
It is configured to allow exposure on four sides.

The two lenses 10A and 10B are composed of, for example, a standard lens and an optional lens.
One of the lenses 10A and 10B is configured to be selectively interposed in the optical path according to the purpose.

The digital image display unit 5 includes:
In order to protect the image display surface 4a directed upward from the CRT 4, a shutter 12 that covers the image display surface 4a when the optical unit 6 is not mounted is provided. The shutter 12 is mechanically opened by a member of the optical unit 6 when the optical unit 6 is inserted into the space, thereby exposing the image display surface 4a. The operations of the digital image display unit 5 and the optical unit 6 are controlled by the control unit 13.

FIG. 4 is a plan view of the optical unit 6. The main mirror 11 is fixed to a mirror holder 14, and the mirror holder 14 is cross-linked horizontally and horizontally along both side walls extending in the longitudinal direction (the left-right direction in FIG. 4) of the housing 15 of the optical unit 6. Two pipe-shaped rails 1
It is slidably supported on 6,16. In this case, the mirror holder 14 is integrally provided on both sides with support arms 14a, 14b supported by the rails 16, 16 in such a manner that the rails 16, 16 are respectively penetrated. A rack 17 is extended along the rail 16 and a rack 17 is engraved on the support arm 14a along the longitudinal direction.

On the other hand, a mirror driving motor (DC motor) 19 having a pinion 18 meshing with the rack 17 mounted on a rotating shaft is fixed to the housing 15.
Thereby, the main mirror 11 is moved between an exposure position (the position shown in FIG. 4) for exposing the video image from the CRT 4 on the paper 44 and a retracted position for allowing the exposure of the film image on the paper 44. Is configured to obtain.

A photoelectric sensor 20 for stopping the main mirror 11 at the exposure position and a microswitch 21 for stopping the main mirror 11 at the retracted position are fixed to the housing 15.

In the vicinity of the filter turret 8, a filter driving motor (pulse motor) 22 and a filter origin detecting photoelectric sensor 23 are provided, and a lens driving mechanism 24 is provided.

The lens driving mechanism 24 includes the rails 16 and
Rails 25, 2 on two parallel pipe-like rails 25, 25 bridged in a direction orthogonal to 16 and horizontally.
5, a pedestal 26 slidably supported along the pedestal 5 and two video image printing lenses 10 on the pedestal 26.
A and 10B are arranged while being held by lens brackets fixed on the pedestal 26, respectively.

On the front of the base 26 parallel to the rail 25,
A rack 27 extending parallel to the rail 25 is fixed by screws or the like. A lens switching motor (pulse motor) 28 is fixed to the housing 15.
A pinion 31 connected to the rotation shaft 8 via reduction gears 29 and 30 meshes with the rack 27. Accordingly, the pedestal 26 moves in the vertical direction in FIG. 4 with the forward / reverse rotation of the motor 28, and a selected one of the lenses 10A and 10B intervenes in the optical path connecting the mirrors 9 and 11. It is configured as follows.

The photoelectric sensor 32 is fixed to the housing 15 in the direction in which the rack 27 protrudes, and the protruding end of the rack 27 intervenes between the light emitting element and the light receiving element of the photoelectric sensor 32, so that the light receiving element The light incident on the pedestal 26 is blocked, whereby the origin position of the pedestal 26 is detected.

Standard lens 10A, optional lens 10
In order for B to intervene in the optical path, the number of drive pulses of the motor 28 is counted from this origin position, and the standard lens 10
A, the pedestal 26 may be driven by the motor 28 for the number of drive pulses of the motor 28 set for each of the optional lenses 10B.

FIG. 5 is an exploded perspective view showing the housing 15 of the optical unit 6 and a rail member 34 serving as a mounting base for the optical unit 6. 6 is a plan view showing the rail member 34 and the paper placing member 55, FIG. 7 is a perspective side view showing a part of the rail member 34, FIG. 8 is a front view of the rail member 34, and FIG. 15 is a front view of the lower section 15b of FIG. FIG. 10 is an enlarged view of a main part of FIG.

In FIG. 5, the housing 15 is composed of an upper section 15a and a lower section 15b, and the rail member 34 is, as apparent from FIG.
, A pair of rail bodies 35, 35 parallel to the insertion direction, a cross member 36 connecting between the rear ends of the rail bodies 35, 35, and a cross member 37 connecting between intermediate parts of the rail bodies 35, 35. And are formed in a frame shape.
Each rail body 35 has a flat top surface and a bottom surface that form planes parallel to each other.

The paper placing member 55 shown in FIGS. 6 and 7 provided in the photographic printing apparatus main body 2 has a substantially horizontal upper surface 55a forming a reference plane.
A paper feed belt (not shown) on which the paper 44 is placed is configured to move from left to right in FIG. The belt is a wide flat belt having a large number of holes, and the paper 44 is sucked on the upper surface 55a of the paper placing member 55 via the belt by using vacuum suction means.

The frame 56 of the photoprinting apparatus main body 2 is provided with the rail main bodies 35 of the rail member 34.
A positioning means such as a protruding edge (not shown) is provided for accurately positioning the bottom surface of the paper mounting portion 55 with respect to the upper surface 55a of the paper placing portion 55, and the rail member 34 has rail main bodies 35, 35. In such a manner that the top surface of the cross member 3 is exactly parallel to the upper surface 55 a of the paper placing portion 55, that is, parallel to the surface of the paper 44.
6 and 37 are fixed to the frame 56 of the photoprinting apparatus main body 2 via brackets 38 and 39 respectively fixed thereto.

An end surface 35a on the front side of each rail body 35 of the rail member 34 is a vertical surface, and a screw hole extending from the end surface 35a along the rail body 35 into the rail body 35 is formed on the end surface 35a. 35b are formed.

On the other hand, as is apparent from FIG. 9, the optical unit 6 has engaging grooves 57, 57 which engage with the rail bodies 35, 35 along both side edges of the bottom surface of the lower section 15b of the housing 15. It has. Also, lower section 1
5b, that is, the leading side wall when the optical unit 6 is inserted into the space 51 of the photoprinting apparatus main body 2 using the rail main body 35 as a guide,
As shown in FIGS. 7 and 10, an electric connector 58 is attached, and the space 51 of the optical unit 6 is provided.
It is configured to be fitted with a connector provided on the side of the main body 2 to achieve electrical connection with insertion into the inside.

Further, as is apparent from FIG. 10, an inclined surface 59 is formed on the bottom surface of the distal end portion of the lower section 15b, and the inclined surface 59 terminates at the stepped portion 60. 61 is fixed. The engaging member 61 is attached to the cross member 36 of the rail member 34.
And a slit 36a for engaging the optical unit 6
Is inserted into the space 51 of the photoprinting apparatus main body 2 using the rail main body 35 as a guide.
The engagement fitting 61 is engaged in the slit 36a to press the distal end of the optical unit 6 onto the rail member 34, thereby preventing the optical unit 6 from floating from the distal end rail member 34. .

In the lower section 15b of the housing 15 of the optical unit 6, stopper fittings are provided on the front side (left side in FIG. 7) of the engaging grooves 57, 57 for engaging the rail bodies 35, 35. The optical unit 6 is fixed along the rail bodies 35, 35, and the photographic printing apparatus body 2
When inserted into the inside, the front ends of these stopper fittings 62, 62 are connected to the end faces 35a, 3 3 on the near side of the rail bodies 35, 35.
5a, the optical unit 6 is positioned on the rail bodies 35 in the insertion direction.

The stopper fitting 62 is shown in FIGS.
As shown in FIG. 5, the front and rear ends of the horizontal strip are bent downward, and small holes are formed in these bent portions to fix the housing 15 to the rail member 34. The special screw 63 has a long shaft portion. That is, the stopper fitting 62 is
When the large-diameter head portion 63a of the special screw 63 is rotated clockwise with a finger, the screw portion 63b at the tip of the special screw 63 is screwed to the end surface 35a of the rail body 35, 35. The optical unit 6 is configured to be screwed into the hole 35b so that the optical unit 6 is fixed on the rail member 34. By loosening the special screws 63, 63 and releasing the screw engagement with the screw holes 35b, 35b, the optical unit 6 is released. The unit 6 can be immediately pulled out of the photoprinting apparatus main body 2. An E-ring 64 (FIG. 7) is fitted to the shaft of the special screw 63 so that the special screw 63 does not fall off the stopper fitting 62.

Next, the support structure of the CRT 4 in the digital image display unit 5 will be described.

FIG. 11 is an exploded perspective view showing the support structure of the CRT 4 together with its adjusting jig, FIG. 12 is a front view of the support structure of the CRT 4, FIG. 13 is a side view thereof, and FIG. 14 is a plan view thereof. 15 is a plan view showing a rotation adjusting mechanism of the CRT 4, FIG. 16 is a front view thereof, and FIG. 17 is a side view thereof.

In FIG. 11, the CRT 4 is fixed in a vertically long rectangular parallelepiped CRT frame 66 with its image display surface 4a facing upward. At the upper end of the CRT frame 66, the image display surface 4a of the CRT 4 faces upward. Window 67
A rectangular front panel 67 having a is fixed in a flange shape. It is desirable that the flange surface is attached in parallel with the phosphor surface of the CRT 4, and that the center of the front panel 67 guided by an arc-shaped guide surface 81 a described later coincides with the center of the CRT 4.

As shown in FIG. 12, a support member 68 of the CRT 4 includes a main frame (second frame) 71 attached to a main body frame 70 of the photographic printing apparatus 1 by four hexagon socket head bolts 69, and the main frame 71. As shown in FIG. 13, a support frame (first frame) 7 is fixed to side plate portions 72, 72 integrally provided on the left and right sides of the frame 71 by two hexagon socket head bolts 73 on each of left and right sides.
And 4. This support frame 74 has a U-shaped planar shape as shown in FIG.
With a flat top surface for mounting the front panel 67 of the T-frame 66, and by loosening the four hexagon socket head bolts 69, the main frame 71 is
As shown by arrows in FIG. 12, displacement adjustment in the vertical and horizontal directions within a predetermined range in a plane parallel to the paper surface of FIG. It is configured so that left and right inclination adjustment is possible.

The support frame 74 is pivotally supported by the side plates 72, 72 by pivot shafts 75 protruding from both sides thereof. When the four hexagon socket head bolts 73 are loosened, the support frame 74 becomes as shown in FIG. As shown in the figure, the front and rear inclinations can be adjusted by pivoting around a pivot shaft 75 within a predetermined angle range. In the support frame 74, a reference slot 76 is formed on the center line C shown in FIG.

Therefore, the support frame 74 is supported by the main frame 70 via a so-called gimbal mechanism. Since the main frame 71 needs to be vertically and horizontally adjusted with respect to the main body frame 70 in addition to the left and right inclination adjustment, the main frame 71 is not pivotally supported by the main body frame 70 even though it is a gimbal mechanism.

The adjustment jig 80 shown in FIG.
Is fixed to the main body frame 70 such that the upper surface of the support frame 74 is parallel to the upper surfaces of the rail bodies 35, 35 so that the image display surface 4a is parallel to the surface of the paper 44. Jig used for

The jig 80 is formed of a single metal plate bent at right angles along four ridges, and is in close contact with the upper surface of the support frame 74 so that the upper surface of the support frame 74 is fixed to the rail body 35, A flat central plate portion 80a for keeping parallel to the upper surface of the rail 35, and vertically rising from both sides of the central plate portion 80a to define a distance between the upper surfaces of the rail bodies 35, 35 and the image display surface 4a. Side plates 80b, 8 for
0b, and wing-like plate portions 80c, 80c which are bent outward at right angles from the upper ends of the side plate portions 80b, 80b and are present on the same plane parallel to the central plate portion 80a. The wing plate portions 80c, 80c are fixed on the rail main bodies 35, 35 by screws. Further, a projection 80d that fits into the reference elongated hole 76 of the support frame 74 is formed on the lower surface at the center of the rear edge of the central plate portion 80a.

Next, prior to mounting the mounting frame 66 on the supporting frame 74, the supporting frame 74 is fixed to the main body frame 70 using the jig 80 so that the upper surface thereof is parallel to the paper 44 surface. A method for performing the above will be described.

(1) First, all eight bolts 69 and 73 are loosened to make the main frame 71 and the support frame 74 free, and then the wing plate portions 80c and 80c of the jig 80 are placed on the rail bodies 35 and 35. Screw it.

(2) Next, the reference slot 7 of the support frame 74
6 so that the projection 80d of the jig 80 is fitted to the support member 6.
8 is moved right and left, and a support frame 74 is brought into close contact with the lower surface of the central plate portion 80a of the jig 80,
After confirming that there is no gap between the two, the eight bolts 69 and 73 are tightened to fix the main frame 71 to the main body frame 70 and the support frame 74 to the main frame 71, respectively.

(3) The jig 80 is removed from the rail main bodies 35, 35.

By going through such a procedure, the upper surface of the support frame 74 is parallel to the surface of the paper 44 and the upper surfaces of the rail bodies 35, 35, and the center of the image display surface 4a of the CRT 4 is shown in FIG. It is fixed at a position so as to be on the center line C.

After fixing the support frame 74 to the main frame 70 via the main frame 71 in this manner, a space 77 surrounded by the U-shaped support frame 74 (FIG. 14).
A CRT frame 66 having a built-in CRT 4 is dropped therein, and the front panel 67 is supported by the upper surface of the support frame 74. Then, the process proceeds to the adjustment of the inclination of the image display surface 4a within the surface.

FIG. 15 is a plan view showing an adjustment mechanism for adjusting the inclination of the image, FIG. 16 is a front view thereof, and FIG. 17 is a side view thereof. FIG. 18 is a test chart used for adjusting the inclination of the CRT 4.

In order to enable this adjustment, long holes 67b for fixing the front panel 67 on the support frame 74 using four screws 78 are provided at the four corners of the front panel 67 of the CRT frame 66. Are formed.
These long holes 67b are formed in an arc shape with the center O of the image display surface 4a as a center of curvature. When the four screws 78 are loosened, the CRT frame 66 rotates on the support frame 74 within a predetermined angle range. Will be possible.

Next, a method of adjusting the rotation of the CRT 4 will be described.

(1) First, two corners 67 on the back side of the front panel 67 are attached to the back edge on the support frame 74.
image display surface 4 for contacting each of c and 67c
a pair of arc-shaped guide surfaces 81 having the center of curvature as the center of curvature a
a, 81a with two screws 82,
Fix at 82.

(2) Next, the front panel 67 is attached to the support frame 74 with four screws 78, but the four screws 78 are loosened so that the CRT frame 66 can move on the support frame 74. .

(3) At the front edge of the support frame 74,
A jig 84 on which two adjusting screws 83L and 83R for pressing both ends of the front edge 67d on the front side of the front panel 67 are fixed by two screws 85 and 85.
Then, the adjusting screws 83L and 83R are connected to the front panel 6.
7 to the front surface 67c of the front panel 67.
a.

(4) A cover (not shown) surrounding the space between the image display surface 4a and the bottom surface of the optical unit 6 is mounted on the front panel 67, and the optical unit 6 is further mounted on the rail bodies 35. Then, the optical unit 6 is fixed to the rail main bodies 35 by tightening the special screws 63.

(5) A test chart as shown in FIG. 18 is projected on the image display surface 4 a of the CRT 4, and the test chart is printed on a paper 44.

(6) Measure the “A” and “B” dimensions of the printed test chart. When the difference between the “A” and “B” dimensions is out of the predetermined range, the special screws 63, 63 are loosened to move the optical unit 6 to the rail body 3
Remove from 5,35.

(7) By loosening one of the screws 83L, 83R and tightening the other, the two corner portions 67c, 67c on the far side of the front panel 67 are fixed to the corner guide jig 81.
In a state of sliding along the guide surfaces 81a, 81a of
Since RT4 can be rotated around the central axis, when A> B, the left screw 83L may be loosened and the right screw 83R may be tightened. If A <B, the right screw 83R may be loosened and the left screw 83L may be tightened. At the head of the screw 83L, 83R, a screw 83L,
A mark M is provided as a guide for the rotation angle of the 83R.

(8) The optical unit 6 is connected to the rail body 3 again.
5 and 35, and tighten the special screws 63 and 63.

(9) Print the test chart again, and
Check the inclination of RT4. If necessary, repeat the above procedure.

(10) If it is confirmed that the inclination of the CRT 4 is within a predetermined range, the four screws 78 are tightened and C
The front panel 67 of the RT frame 66 is fixed on the support frame 74.

As is apparent from the above description, according to the present embodiment, the support frame 74 for supporting the CRT frame 66 is connected to the photographic printing apparatus 1 via a so-called gimbal mechanism.
By being attached to the main body frame 70, the inclination of the support frame 74 in the front, rear, left and right directions can be easily adjusted. Therefore, the CRT 4 can be easily attached to the main body frame 70 so that the image display surface 4a thereof is exactly parallel to the surface of the paper 44. Therefore, the video image printing lenses 10A and 10B have a shallow depth of field. Even in this case, there is no possibility that the printed image will be partially out of focus.

The video image printing lens 10
A, 10B, and the optical unit 6
Rails 35, 35
Are fixed to the main body frame 56 in parallel with the surface of the paper 44 and the jig 80 is used to adjust the posture of the support frame 74 so that the image display surface 4a is parallel to the rail bodies 35. By performing the adjustment, the image display surface 4 a can be easily made parallel to the surface of the paper 44, and the correct mounting posture can be maintained with respect to the optical unit 6.

After the posture adjustment, the support frame 7
By fixing the CRT 4 to the main frame 71 and the main frame 71 to the main body frame 70, there is no need for adjustment when the CRT 4 is replaced later.

Further, since the bracket 81 having the arc-shaped guide surfaces 81a, 81a having the center of curvature about the central axis of the image display surface 4a of the CRT 4 is attached to the support frame 74, the turning of the adjusting screw members 83L, 83R is performed. Due to the movement, the center of the image display surface 4a is not moved and the image display surface 4a is not moved.
a can be adjusted in the plane.

Further, in the screw member, since the rotation angle and the amount of movement in the axial direction are correlated, the image display surface 4a
Can be quantified by the rotation adjustment angle of the screw members 83L and 83R, and there is an advantage that the adjustment is extremely easy.

In the above embodiment, the two adjusting screw members 83L and 83R are used. However, by using a biasing means such as a spring, the adjusting screw member is reduced to one. Is also possible.

Although the above-described embodiment uses a CRT as an image display device, the present invention can be applied to a digital image unit provided with another image display device such as a liquid crystal.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing only essential parts in a state where a digital kit to which the present invention is applied is attached to a photographic printing apparatus.

FIG. 2 is a side view thereof.

FIG. 3 is an explanatory view schematically showing a configuration of a digital kit to which the present invention is applied.

FIG. 4 is a plan view of an optical unit of the digital kit to which the present invention is applied.

FIG. 5 is an exploded perspective view of a housing of the optical unit and a rail member serving as a mounting base of the optical unit.

FIG. 6 is a plan view showing a rail member and a paper placing member.

FIG. 7 is a perspective side view showing a part of the section as a cross section.

FIG. 8 is a front view of a rail member.

FIG. 9 is a front view of a lower section of a housing of the optical unit.

FIG. 10 is an enlarged view of a main part of FIG. 7;

FIG. 11 is an exploded perspective view showing the support structure of the CRT together with its adjusting jig.

FIG. 12 is a front view of a support structure of the CRT 4;

FIG. 13 is a side view thereof.

FIG. 14 is a plan view thereof.

FIG. 15 is a plan view showing a rotation adjusting mechanism of the CRT.

FIG. 16 is a front view thereof.

FIG. 17 is a side view thereof.

FIG. 18 shows a test chart.

FIG. 19 is a schematic configuration diagram of a conventional photographic printing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Photo printing device 2 Main body of photo printing device 3 Digital kit 4 CRT (image display device) 4a Image display surface 5 Digital image display unit 6 Optical unit 7R, 7G, 7B Color filter 8 Filter turret 9 Submirror 10A, 10B Video image print Lens 11 Main mirror 12 CRT image display surface protection shutter 13 Control unit 14 Mirror holder 15 Housing 16 Rail 17, 27 Rack 18, 31 Pinion 19 Main mirror drive motor 20, 23, 32 Photoelectric sensor 21 Micro switch 22 Filter Driving motor 24 Lens drive mechanism 26 Pedestal 28 Lens switching motor 34 Rail member 35 Rail body 36, 37 Cross member 43 Film image printing lens 44 Paper (photosensitive material) 55 paper Mounting member 57 Engagement groove 58 Electric connector 61 Engagement fitting 62 Stopper fitting 63 Special screw 66 CRT frame (first frame) 67 Front panel 68 Support member 70 Main body frame 71 Main frame 74 Support frame (Second frame) 80 jig 81 bracket 81a arcuate guide surface 83L, 83R adjusting screw member

Claims (2)

[Claims] A first frame to which the image display device is fixed; a second frame supporting the first frame; and an image display surface fixed to the first frame. An arc-shaped guide surface provided on the second frame for guiding the first frame so that the first frame can be rotationally displaced around a vertical center axis; An adjustment screw member attached to the second frame so as to rotationally displace the frame along the arc-shaped guide surface. 2. A CR mounted on the first frame, wherein the image display device has an image display surface facing upward.
T, wherein the first frame comprises a square front panel parallel to the image display surface of the CRT and mounted on the second frame, wherein two adjacent corners of the front panel are: The second
2. The rotation adjusting mechanism for an image display device according to claim 1, wherein the guide is guided along a pair of the arc-shaped guide surfaces provided on the upper surface of the frame.