JP2001147491A - Optical unit for photographic printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a housing frame of a flexible structure in order to attain a light-weight unit and improve the portability while maintaining high accuracy in attaching to a photographic printer, and to make the housing frame flexible along a rail member by placing the housing frame on the rail member fixed to the photographic printer while taking the surface of a photosensitive material as a reference, in an optical unit with the housing frame which is attachably/detachably attached to the photographic printer provided with a function of printing a film image on the photosensitive material surface, and provided with a video image printing lens on the housing frame. SOLUTION: A mirror which is made movable between a 1st position above an opening part 72d where a luminous flux from a video image printing lens is reflected toward the photosensitive material surface so as to enable printing the video image and a 2nd position retreated from the 1st position for allowing to print a film image is arranged on the housing frame 15, and notched parts 71f and 71f are formed in wall parts 71g and 71g extending along the mirror traveling path on both sides of an opening part 71h of the housing frame 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical unit for a photographic printing apparatus, and more particularly, to an optical unit having a function of printing a film image on a photosensitive material surface. The present invention also relates to an optical unit including a video image printing lens on the housing frame.

[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, a light source unit 42 for illuminating a print target frame set in the negative carrier unit 41 is provided on an upper portion of the main body 2 of the photoprinting apparatus 1, and light transmitted through the print target frame is converted into a film image print lens 43. Thereby, an image is formed on the photosensitive material (paper) 44. The paper 44 is pulled out from the roll paper 45 and set at a printing position. The exposed paper 44 is sent to a developing processing unit 47 through a printing unit 46, developed, and then dried in a drying unit 48. It is configured to be 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. There is an increasing demand for color photographic printing equipment.

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 a display screen facing upward is arranged alongside the photosensitive material. A first mirror (sub-mirror) is disposed above, and a second mirror (main mirror) is disposed above the photosensitive material. A digital image printing lens is disposed between these mirrors. The first and second mirrors are guided to the photosensitive material via the first and second mirrors, and are drawn out of the optical path when an analog image is printed.

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 photo 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.

The digital kit includes a digital image display unit including a CRT as a video image display means, and an optical unit including a mirror and a lens for exposing the image displayed on the CRT onto paper. You. In order to obtain a good resolution, it is preferable to use a large display screen for the CRT. Therefore, the digital image display unit becomes large and heavy. Although the optical unit is firmly fixed, the optical unit including the mirror and the lens can be configured to be relatively small. It is conceivable that the photographic printing apparatus 1 is detachably mounted in the space 51 of the photographic printing apparatus 1 shown in FIG.

[0007]

In general, when printing a film image, a bright light source and a printing lens having a relatively large depth of field (for example, about 7 mm) are used, so that the surface of the photosensitive material is aligned with the optical axis. Even if it is slightly inclined, there is no possibility that a partial blur will occur in the printed image.

On the other hand, in printing a video image using a CRT, since the screen of the CRT, which is a light source, is relatively dark, if a lens similar to that used for film image printing is used, the exposure time must be lengthened. Therefore, the number of prints processed per unit time is reduced and the work efficiency is reduced. Therefore, a relatively large-diameter lens is inevitably used for printing video images.
Large aperture lenses have a shallow depth of field (for example, 1mm
If the optical axis of the video image printing optical unit is slightly inclined with respect to the surface of the photosensitive material, the printed image may be partially out of focus.

For this reason, when retrofitting the optical unit of the digital kit to the photoprinting apparatus 1 dedicated to film image printing, it is necessary to ensure the mounting accuracy of the optical unit strictly.

Therefore, it is considered that the housing frame of the optical unit may be formed of a strong material with high precision and this housing frame may be attached to the main body of the photographic printing apparatus based on the photosensitive material surface. Such a rigid construction inevitably increases the weight.

On the other hand, the optical unit is provided in the space 51.
In some cases, other special exposure devices, such as a mask unit used for bordering a photo, may be inserted and used, so it must be configured to be detachable from a photoprinting device. The most important thing is that the optical unit must be lightweight and highly portable, so that no matter how high the precision is, a heavy and poorly portable optical unit is not only costly but also easy to transport in its packaging. It is obvious that this method is not acceptable in the market because it requires some contrivance, the package size becomes large, the weight increases, and the transportation cost increases.

In view of the above circumstances, an object of the present invention is to provide a structure of an optical unit that can satisfy both conflicting demands of reducing the weight of the optical unit and securing mounting accuracy. is there.

[0013]

An optical unit for a photographic printing apparatus according to the present invention has a housing frame detachably attached to a photographic printing apparatus having a function of printing a film image on a photosensitive material surface. In a configuration in which a video image printing lens is provided on the housing frame, a rail member is fixed at a position above the photosensitive material surface of the main body of the photographic printing apparatus, and the housing frame includes a film image printing device. And a frame that has an opening that allows both image printing and video image printing, and has flexibility that allows the optical unit to bend in accordance with the rail member by being mounted on the rail member. It is characterized by the following.

In this case, it is preferable that the rail member extends parallel to the photosensitive material surface with respect to the photosensitive material surface.

A first position above the opening for reflecting a light beam emitted from the video image printing lens toward a photosensitive material surface to enable video image printing;
A mirror movable from the first position to a second position allowing film image printing is provided on the housing frame, and the mirror is provided on both sides of the opening of the housing frame. It is preferable to adopt a structure for reducing the strength of the wall portion extending along the moving passage.

The above-mentioned strength reduction structure means that a notch is provided in a wall extending along the movement path of the mirror, thereby lowering the height of the wall and reducing the strength of the wall. means.

The operation of the present invention can be explained with reference to the schematic diagrams shown in FIGS. In addition, in order to facilitate understanding, the names and reference numerals of the respective members in FIGS. 1 and 2 correspond to the names and reference numerals of the corresponding members in the embodiment described later.

That is, FIG. 17A shows the optical unit 6.
FIG. 1 is an exaggerated side view showing a twisted state of FIG.
FIGS. 7B and 17C are a plan view and a side view showing a state where the optical unit 6 indicated by a virtual line is placed on the rail main bodies 35 of the frame-shaped rail member 34 indicated by the solid line. is there.

The top surfaces of the rail bodies 35, 35 are on a plane P1 parallel to the paper surface with respect to the photosensitive material surface (paper surface), and the optical unit 6 is mounted on the rail bodies 35, 35.
When the optical unit 6 is placed on the rail body 35, the weight of the optical unit 6 depends on its own weight because the optical unit 6 has flexibility.
The optical unit 6 bends following the upper surface of the optical unit 35, and the torsion of the optical unit 6 is corrected based on the plane P1.

FIG. 18A is an exaggerated plan view showing a state where the optical unit 6 is distorted in parallel in a horizontal plane.
FIG. 18B is a plan view showing a state where the optical unit 6 indicated by a virtual line is placed on the rail main bodies 35 of the frame-shaped rail member 34 indicated by the solid line. In this case, for example, the front end surfaces of the rail bodies 35 are on a plane P2 perpendicular to the plane P1.
For example, stopper metal fittings 62, 62 for screwing to the end surfaces of the rail main bodies 35, 35 are fixed at predetermined positions on the bottom surface of the optical unit 6. Is fixed to the end face of the rail body 35 using, for example, the screw 63, so that the distortion of the optical unit 6 is corrected with reference to the plane P2.

[0021]

According to the present invention, since the housing frame of the optical unit has a flexible structure that can be bent in accordance with the rail member by being mounted on the rail member, even the rail member is photographed. As long as it is fixed to the main body of the printing apparatus with high accuracy, by mounting the housing frame of the optical unit on this rail member, the mounting accuracy of the optical unit with respect to the main body of the photo printing apparatus can be ensured, and The weight of the unit can be reduced.

In addition, since the rail member is fixed to the main body of the photographic printing apparatus with reference to the photosensitive material surface (paper surface), the optical unit can be attached to the photosensitive material surface with high precision, and video images can be displayed. Even if the printing lens has a shallow depth of field, there is no possibility that the printed image will be partially out of focus.

Further, since the optical unit is mounted on the rail member, there is an advantage that the work of inserting and removing the optical unit can be easily performed.

Further, since the housing frame has a structure in which the strength is reduced by providing, for example, a notch on the wall along the movement path of the mirror on both sides of the opening. A flexible structure can be easily realized.

[0025]

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. 16 with a digital kit to which the present invention is applied. It is a schematic front view and a side view. FIG.
FIG. 3 is an explanatory view schematically showing a configuration of a digital kit.

In the figure, a digital kit 3 includes a digital image display unit 5 fixedly attached to the front of a main body 2 of a photographic printing apparatus 1 including a CRT 4 with a display screen 4a facing upward, and a digital kit 3 fixed to the main body 2. The optical unit 6 is detachably attached to the space 51 in FIG. 16 from the front side along a rail (not shown).

The optical unit 6 has a filter turret 8 provided with three color filters 7R, 7G, 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 three times on the display screen 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 connected to guide shafts 16
3 and retracted to the left in FIG. 3 to allow exposure of the film image light through the film image printing lens 43 of FIG.

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 display screen 4a directed upward from the CRT 4, a shutter 12 that covers the display screen 4a when the optical unit 6 is not mounted is provided. This shutter 1
2 is mechanically opened by a member of the optical unit 6 with the insertion of the optical unit 6 into the space, thereby exposing the display screen 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 used for the housing frame 1 of the optical unit 6.
5 are slidably supported on two pipe-like guide shafts 16, 16 which are parallel and horizontally bridged along both side walls extending in the longitudinal direction (the left-right direction in FIG. 4). In this case, the mirror holder 14 includes support arms 14a, 14a supported by the guide shafts 16, 16 with the guide shafts 16, 16 respectively penetrating therethrough.
b is provided integrally on both sides, but one of the support arms 14
a extends long along the guide shaft 16, and a rack 17 is engraved on the support arm portion 14a along its longitudinal direction.

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

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 frame 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 moving base driving mechanism 24 is provided. .

The lens moving base drive mechanism 24 is composed of two parallel pipe-shaped guide shafts 25, which are bridged in a direction perpendicular to the guide shafts 16 and 16 and horizontally.
25, a lens moving table 26 slidably supported along guide shafts 25, 25, and two video image printing lenses 10A, 1 on the lens moving table 26.
OB are respectively held and arranged in lens brackets fixed on the lens moving base 26.

A rack 27 extending parallel to the guide shaft 25 is fixed to the front surface of the lens moving base 26 parallel to the guide shaft 25 with screws or the like. A lens switching motor (pulse motor) 28 is fixed to the housing frame 15, and a pinion 31 connected to a rotation shaft of the motor 28 via a reduction gear meshes with the rack 27. Accordingly, the lens moving base 26 moves in the vertical direction in FIG. 4 with the forward / reverse rotation of the motor 28,
A selected one of the lenses 10A and 10B is configured to intervene in an optical path connecting the mirrors 9 and 11.

The photoelectric sensor 32 is fixed to the housing frame 15 in the direction in which the rack 27 projects.
Intervenes between the light emitting element and the light receiving element of the photoelectric sensor 32 so that light incident on the light receiving element is blocked,
Thereby, the origin position of the lens moving table 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 lens moving base 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 shows the housing frame 1 of the optical unit 6.
5 and a rail member 3 serving as a mounting base for the optical unit 6
FIG. FIG. 6 shows the rail member 3.
4 is a plan view showing the paper placing member 55, FIG. 7 is a perspective side view showing a part of the section, and FIG.
4 is a front view of FIG.

In FIG. 5, the housing frame 15 includes an upper section 71 and a lower section 72, and the rail member 34 includes a pair of rails parallel to the insertion direction of the optical unit 6, as is apparent from FIG. Main body 35, 35
And a cross member 36 connecting between the rear ends of the rail bodies 35, 35, and a cross member 37 connecting between the intermediate parts of the rail bodies 35, 35 to form a frame. 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 photographic printing apparatus main body 2 is provided with the rail main bodies 35, 3 of the rail member 34.
Positioning means such as a protruding edge (not shown) is provided for accurately positioning the bottom surface of the sheet 5 with respect to the upper surface 55a of the paper placing portion 55.
The cross member 3 is arranged such that the top surfaces of the rail bodies 35 are exactly parallel to the upper surface 55a of the paper placing portion 55, that is, in parallel with the surface of the paper 44.
The bracket is fixed to the frame 56 of the photoprinting apparatus main body 2 via brackets 38 and 39 fixed to the brackets 6 and 37, respectively.

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 into the rail body 35 along the rail body 35 is formed on the front surface 35a. 35b are formed.

FIG. 9 is a plan view of the upper section 71 of the housing frame 15, FIG. 10 is a sectional side view thereof, and FIG. 11 is a front view thereof. 12 is a plan view of the lower section 72 of the housing frame 15, FIG. 13 is a sectional side view thereof, and FIG. 14 is a front view thereof.

The housing frame 15 is formed by fitting an upper section 71 and a lower section 72 integrally formed of a hard plastic material to each other and then screwing them together. 9 and the left end of FIG. 10), a mirror mounting portion 71c inclined at 45 ° having an opening 71b for mounting the mirror 9 from above, and a handle 71d. The handle 71 d is used when the optical unit 6 is attached to the photoprinting apparatus main body 2, when the optical unit 6 is pulled out from the photoprinting apparatus main body 2, and when the optical unit 6 is carried. 12 and 13). The wall 71e at the other end of the housing frame 15 has a bottom portion when the optical unit 6 is detached from the photoprinting apparatus main body 2 and the handle 71d is placed upright on the side of the photoprinting apparatus main body 2. Become.

The upper section 71 is formed in a frame shape, and a pair of walls connecting between the two walls 71a and 71e has a notch 71f formed by cutting out the upper part thereof. The connecting portions 71g, 71g having a lower height than the connecting portions 71a, 71e are formed, thereby adopting an aggressive structure for reducing the strength, and the two wall portions 71a, 71e.
A large space 7 serving as a movement path of the main mirror 11 is provided between the spaces e.
1h, the guide rails 16, 16 of the mirror holder 14 to which the main mirror 11 is fixed are attached to both wall portions 71a, 7
Bridged through notches 71f, 71f between 1e.

On the other hand, as shown in FIGS. 12 and 13, the lower section 72 of the housing frame 15 has three color filters 7R, 7G, 7B of the filter turret 8.
And a filter turret receiving portion 72b provided with an opening 72a facing one of them, and an upper section 71 formed at an end of the filter turret receiving portion 72b.
And a handle 72c that constitutes a handle of the optical unit 6 together with the handle 71d. Further, the lower section 72 has an opening 72d in which the main mirror 11 is positioned above when a video image is printed. This opening 72d is opened for the film image printing lens 43 so that the main mirror 11 retreats to the right in FIG. 12 at the time of film image printing. Both sides (upper and lower sides in FIG. 12) of the opening 72d are relatively thin connecting portions 72d, 72d, and the lower section 72 is also formed in a frame shape.

As shown in FIG. 14, on the bottom surface of the lower section 72, engagement grooves 57, 57 for engaging with the rail bodies 35, 35 are formed along both side edges of the bottom surface.

The housing frame 15 in which the upper section 71 and the lower section 72 having the above structure are joined to each other has a size (a length of 600 mm and a width of 3 mm).
The upper section 71 is provided with notches 71f, 71f along the moving path of the main mirror 11 on both sides of a large-area opening 71h. Lower section 7
2 also has a relatively large opening 72d and is formed in a frame shape, so that it has a relatively low strength and is easily twisted around the central axis in the left-right direction in FIG.

The leading end wall of the lower section 72, that is, the leading 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, is shown in FIGS. As shown in FIG. 15, which is an enlarged view of a main part of
The optical unit 6 is configured to be fitted with a connector provided on the main body 2 side to achieve electrical connection with insertion of the optical unit 6 into the space 51.

Further, as is apparent from FIG. 15, an inclined surface 59 is formed on the bottom surface of the distal end portion of the lower section 72, 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
Using the rail body 35 as a guide
Is inserted into the space 51, the engaging fitting 61 is engaged in the slit 36a in the final position of the insertion,
The distal end of the optical unit 6 is pressed onto the rail member 34 to prevent the optical unit 6 from floating from the distal end rail member 34.

The housing frame 15 of the optical unit 6
Of the rail body 35, 35
Stoppers 62, 62 are fixed to the front side (left side in FIG. 7) of the engagement grooves 57, 57 which engage with the optical unit 6 so that the optical unit 6 moves along the rail bodies 35, 35 inside the photographic printing apparatus body 2. When the stopper fittings 62,
The front end of 62 is the end face 35 on the near side of the rail bodies 35, 35.
The optical units 6 are positioned in the insertion direction on the rail bodies 35, 35 by abutting on the rails 35, 35a.

The front end face 35 of the rail bodies 35, 35
a, 35a are aligned on a plane perpendicular to the top surfaces of the rail bodies 35, 35 set in parallel with the paper surface. The contact surfaces of the stopper members 62, 62 with respect to the end surfaces 35a, 35a of the stopper members 62, 62 on the near side of the rail bodies 35, 35, as will be described later, the front end surfaces 35a, 35a of the rail bodies 35, 35, respectively. 3
The position and the angle are set such that the distortion is corrected in the horizontal plane of the housing frame 15 of the optical unit 6 by being screwed to the optical unit 6.

Then, the optical unit 6 is connected to the rail body 3.
5 and 35 are inserted into the photoprinting apparatus main body 2 and the rail main bodies 35 and
When the positioning of the optical unit 6 in the insertion direction on the optical unit 6 is performed, the housing frame 15 of the optical unit 6 has a structure that easily bends, so that the housing frame 15 is provided with the lenses 10A, Due to the weight of the mirror 10B and the mirrors 9, 11 and the like, they bend following the rail main bodies 35, 35, and are closely attached to the rail main bodies 35, 35 to correct the distortion of the housing frame 15, so that the predetermined mounting accuracy with respect to the surface of the paper 44 is improved. can get.

The stopper fitting 62 is shown in FIGS.
As shown in the figure, the front and rear ends of the horizontal strip are bent downward, and small holes are formed in these bent portions, respectively.
The shaft portion of a long special screw 63 for fixing the screw is inserted. That is, the stopper fitting 62 also serves as a holder for the special screw 63, and the large-diameter head portion 63a of the special screw 63 is rotated clockwise with a finger, whereby
The screw portion 63b at the tip of the special screw 63 is the rail body 35,
The optical unit 6 is fixed to the rail member 34 by being screwed into a screw hole 35b of an end face 35a of the 35. Due to this fixation, the distortion of the optical unit 6 in the horizontal plane is reduced by the end faces 35a, 35a of the rail bodies 35, 35.
It is corrected based on 35a.

Then, the optical unit 6 can be pulled out of the photographic printing apparatus main body 2 simply by loosening the special screws 63, 63 and releasing the screw engagement with the screw holes 35b, 35b. An E-ring 64 (FIG. 7) is fitted on the shaft of the special screw 63,
3 does not fall off the stopper fitting 62.

As is clear from the above description, according to the present embodiment, the rail member 34 is fixed to the photographic printing apparatus main body 2 with the surface of the paper 44 as a reference, and the rail member 44 When the optical unit 6 having the body frame 15 is placed, the housing frame 15 having a flexible structure that easily bends and follows the rail bodies 35 and 35 and comes into close contact with the rail bodies 35 and 35. The optical unit 6 can be accurately attached to the surface of the video image printing lens 44, and the video image printing lens 10
Even if A and 10B have shallow depths of field, there is no possibility that a printed image will be partially out of focus.

The housing frame 15 of the optical unit 6
However, there is an advantage that the portability can be improved by permitting a flexible structure formed of a plastic material and allowing a flexible structure.

Also, since the optical unit 6 is mounted on the rail member 34, there is an advantage that the work of inserting and removing the optical unit 6 can be easily performed.

Further, when the optical unit 6 is inserted into the photographic printing apparatus main body 2, the stopper unit 62 that comes into contact with the end faces 35 a, 35 a of the rail main bodies 35, 35 is provided. The insertion position of the optical unit 6 is defined, and the distortion of the optical unit 6 in the horizontal plane is corrected with reference to the end surfaces 35a, 35a of the rail bodies 35, 35.

Further, the housing frame 1 of the optical unit 6
5 and the cross member 3 of the rail member 34 with the insertion of the optical unit 6
6 is provided so as to engage with the slit 36a of the optical unit 6 and press the optical unit 6 on the rail member 34, so that the optical unit 6 can be inserted into the photographic printing apparatus body 2 simply by inserting the optical unit 6 into the main body 2. Can be prevented from rising from the rail member 34, and there is an advantage that no excessive force is applied to the connector 58.

[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 photoprinting 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 frame 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 plan view of an upper section of a housing frame of the optical unit.

FIG. 10 is a sectional side view thereof.

FIG. 11 is a front view thereof.

FIG. 12 is a plan view of a lower section of a housing frame of the optical unit.

FIG. 13 is a sectional side view thereof.

FIG. 14 is a front view thereof.

FIG. 15 is an enlarged view of a main part of FIG. 7;

FIG. 16 is a schematic configuration diagram of a conventional photographic printing apparatus.

FIG. 17 is a schematic diagram for explaining the operation of the present invention in which the distortion of the optical unit is corrected.

FIG. 18 is a schematic view for explaining the operation of the present invention in which parallel distortion in the horizontal plane of the optical unit is corrected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Photo printing device 2 Photo printing device main body 3 Digital kit 4 CRT 4a Display screen 5 Digital image display unit 6 Optical unit 7R, 7G, 7B Color filter 8 Filter turret 9 Submirror 10A, 10B Video image printing lens 11 Main mirror 12 CRT display screen protection shutter 13 Control unit 14 Mirror holder 15 Housing frame 16 Guide shaft 17, 27 Rack 18, 31 Pinion 19 Main mirror drive motor 20, 23, 32 Photoelectric sensor 21 Micro switch 22 Filter drive motor 24 Lens Moving table drive mechanism 26 Lens moving table 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 placing member 57 engaging groove 58 electric connector 61 engaging fitting 62 stopper fitting 63 special screw 71 upper section 71h, 72d opening 71f notch 72 lower section of housing frame

Claims (3)

[Claims] 1. A housing frame detachably attached to a photo printing apparatus having a function of printing a film image on a photosensitive material surface, and a video image printing lens is provided on the housing frame. An optical unit, wherein a rail member is fixed at a position above the photosensitive material surface of the main body of the photographic printing apparatus, and the housing frame includes an opening that allows both film image printing and video image printing. An optical unit for a photographic printing apparatus, comprising: a frame-like body having a flexibility such that the optical unit is bent on the rail member when the optical unit is mounted on the rail member. 2. The optical unit according to claim 1, wherein said rail member extends parallel to said photosensitive material surface with respect to said photosensitive material surface. 3. A first position above the opening for reflecting a light beam from the video image printing lens toward the photosensitive material surface to enable video image printing, and from the first position. Second to retreat and allow film image printing
A mirror movable on the housing frame is provided on the housing frame, and a strength-reducing structure is adopted on a wall extending along the movement path of the mirror on both sides of the opening of the housing frame. 3. The method according to claim 1, wherein
An optical unit as described.