JP2001100320A - Mirror moving structure for photograph printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable both of a video image and a photographic image to be printed by retreating only a mirror for an video image from an optical path for printing the photographic image as a photograph printing device selectively printing the video image and the photographic image. SOLUTION: The optical path of an analog exposure system can be secured by retreating the mirror 11 by moving it as long as a distance D1 to the position of the mirror 11a. Since the mirror 11 is inclined with respect to the optical axis 54 of the analog exposure system, it is enough that the upper end 58 of the mirror 11a is made to project outside a boundary surface 56a having the same inclination and the distance D1 becomes comparatively short. Thus, an optical unit 6 can be made compact by retreating the mirror 11 to the position shown by the mirror 11a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mirror moving structure used for an optical unit for a digital kit of a photographic printing apparatus.

[0002]

2. Description of the Related Art For example, JP-A-63-257742 discloses a film image recorded on a photographic film and a CRT.
Discloses a photographic printing apparatus which can selectively print a video image displayed on a photosensitive material.

In this photographic printing apparatus, a lens for printing a film image 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), a second mirror (main mirror) above the photosensitive material, and a video image printing lens between these mirrors.
The light from the RT is guided to the photosensitive material via the first and second mirrors, and the first and second mirrors are extracted from the optical path when printing a film image.

Recently, with the development of digital cameras and the like,
Film image (analog image) and CR
There has been a demand for a photographic printing apparatus that can selectively print a video image (digital image) displayed on a T on a photosensitive material or synthesize an analog image and a digital image. .

[0005] However, the photographic printing apparatus currently owned by the majority of small-scale developing laboratories is dedicated to analog image processing, and the photographic printing apparatus capable of processing both analog images and digital images is expensive. But because
There has been a demand for a so-called digital kit which can add a digital image exposure function by a relatively simple modification to a conventional photographic printing apparatus having only an analog image exposure system at a low cost.

A general photographic printing apparatus used conventionally has, for example, a configuration 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 printing lens 43. Thereby, an image is formed on the photosensitive material (paper) 44. Paper 44
Is pulled out of the roll paper 45 and set at the printing position, and the exposed paper 44 is placed in the printing section 46.
After passing through the developing unit 47 to be developed, the drying is performed by the drying unit 48 and then sent to the sorter unit 50. And a lens 4 for film image printing.
A space 51 exists between the position 3 and the paper print position below the space 3. An optical unit for performing special printing is detachably mounted in the space 51.

[0007]

By the way, in order to add a function of printing a digital image such as a video image to the photographic printing apparatus 1 for analog image printing having the above-described structure, the above-mentioned publication is disclosed. Similarly to the photographic printing apparatus described in the patent application, a digital image display unit including a CRT (or LCD) as an image display means based on a digital image signal, and an image displayed on the CRT is exposed on a paper 44. It is necessary to attach an optical unit for performing the operation.

In this case, the light source of the digital image is
CRT with large display screen to ensure good resolution
It is preferred to use

Since the optical unit is disposed in the space 51 and intervenes in the analog image exposure system, when printing an analog image, there is a problem that the optical unit becomes an obstacle.

In view of the above circumstances, an object of the present invention is to provide a mirror moving structure of a photographic printing apparatus which can print an analog image even when an optical unit is mounted.

[0011]

A photographic printing apparatus using a mirror moving structure according to the present invention comprises a first optical system having a diffusing light beam for printing a photographic image from a photographic film on a photosensitive material on an exposure table. And a second optical system for printing a video image displayed on the CRT. These first and second optical systems are switchable.

The second optical system has a mirror inclined with respect to the optical axis of the first optical system which enters and exits the light beam of the first optical system. The mirror moves linearly from the light beam of the first optical system during recording of a photographic image and retreats to the outside of the boundary surface defining the light beam of the first optical system, which is inclined in the same direction as the mirror. It is characterized by being constituted.

[0013]

According to the mirror moving structure of the photographic printing apparatus of the present invention, the second optical system has a mirror inclined with respect to the optical axis of the first optical system which enters and exits the light flux of the first optical system. This mirror moves linearly from the light beam of the first optical system when recording a photographic image, and is in the same direction as the mirror on the boundary surface that defines the light beam of the first optical system from the lens to the exposure table. It is configured to retract to the outside of the sloping boundary surface,
There is an effect that the moving distance of the mirror can be reduced and the optical unit can be downsized.

[0014]

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. 8 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 FIG. 1 to FIG.
FIG. 2 shows a digital image display unit 5 fixedly attached to the front surface of the main body 2 of the photoprinting apparatus 1 including the CRT 4 with the display screen 4a facing upward, and a rail (not shown) fixed to the main body 2. The optical unit 6 is detachably mounted from the front side in the space 8.

The optical unit 6 has a filter turret 8 provided with three color filter elements 7R, 7G, 7B on a rotating plate, and the three color filter elements 7R, 7G, 7B of the filter turret 8. And a lens 10A, 10B having a horizontal optical axis for forming an image on paper of the image light reflected by the sub-mirror 9 in the horizontal direction. And a main mirror 11 for reflecting image light emitted from one of the lenses 10A and 10B toward paper. These sub mirror 9 and lens 1
0A, 10B and the main mirror 11 are collectively referred to as a second optical system. On the other hand, as shown in FIG. 8, an optical system having a diffused light beam for printing an analog image such as a photographic film is called a first optical system.

The filter turret 8 converts a red component image, a green component image, and a blue component image, which are monochrome images, sequentially displayed on the display screen 4a of the CRT 4 into three separate images, respectively. It is provided to make an image. The main mirror 11 is
Provided for switching between film image printing and digital image printing. At the time of film image printing, the main mirror 11 is guided by the rail 16 and retreats to the left in FIG. 3 along the horizontal optical axis, and the lens 43 in FIG. It is configured to allow exposure of the transmitted film image light to the paper 44 surface.

The two lenses 10A and 10B are composed of, for example, a standard lens and an optional lens.
One of the lenses 10A, 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 facing upward from the CRT 4, a shutter 12 covering the display screen 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 display screen 4a. Digital image display unit 5
The operation of the optical unit 6 is 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 horizontally and horizontally bridged 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 in which a pinion 18 meshing with the rack 17 is 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 detector 23 are provided, and a lens driving mechanism 24 is further provided.

The lens driving mechanism 24 includes the rails 16 and
Rails 25, 2 on two parallel pipe-shaped rails 25, 25 bridged in a direction orthogonal to 16 and horizontally.
The moving base 26 is slidably supported along the reference numeral 5, and two video image printing lenses 10A and 10B are fixed on the moving base 26.

FIG. 5 is a schematic explanatory view schematically showing a longitudinal section of the optical unit 6 shown in FIG. The mirror 11 shown by a solid line in FIG. 5 is at a position where the optical unit 6 functions to print a video image. That is, C
The light from the display screen 4a of the RT 4 is reflected laterally by the sub-mirror 9 and further passes through the lens 10A to the mirror 11
Then, the light passes through the opening 52 and is reflected toward the paper 44 (FIG. 8) below, and forms an image on the paper 44.

Since the mirror 11 is interposed in the luminous flux of the analog image system extending downward from the light source 42, the mirror 11 becomes an obstacle when printing a photographic image. But,
As described with reference to FIG. 4, by moving the mirror 11 to the right by the distance D1 and retracting it as shown by the mirror 11a, a path for the analog exposure system can be secured. Since the mirror 11 is inclined with respect to the optical axis 54 of the analog exposure system, the upper end 58 of the mirror 11a has the same inclination.
What is necessary is just to go outside the boundary surface 56a that defines the light flux from the lens of the first optical system to the exposure table, and the distance D1 is a relatively short distance. However, conversely, if it moves toward the mirror 11b shown by a virtual line to the left, the boundary surface 56b is in the opposite direction to the inclination of the mirror 11, so that the lower end 60 of the mirror 11
Must be located outside the boundary surface 56b, and the moving distance D2 of the mirror 11 is larger than D1. Therefore, in this case, it is necessary to lengthen the rack 17 and the pointing arm 14a shown in FIG. 4, and the optical unit 6 becomes large. Therefore, the boundary surface 5 having the same inclination as the mirror 11
The optical unit 6 can be downsized by retracting to the position indicated by the mirror 11a toward 6a.

Next, the holding structure of the mirror 11 will be described with reference to FIGS. FIG. 6 is a partial perspective view of the holder 14 holding the mirror 11 viewed from the mirror side, and FIG. 7 is a similar partial perspective view of the holder 14 viewed from the holder 14 side. The holder 14 has a substantially triangular side wall 66a, 66b,
One end has a relatively long support arm 14a, and the other has a short support arm 14b. On the long side of the triangle of the side wall 66, three support portions 68a, 68b, 68c are protruded. A supporting portion 68a is formed substantially at the center of the long side of the side wall 66a, and supporting portions 68b and 68c are provided on both sides of the side wall 66b. The mirror 11 is inserted behind the support portions 68 in the direction of arrow A, and is stopped by a stop portion 70 protruding from one end of the side wall 66a and a stop surface (not shown) of the support portion 68c. The stop 70 is configured so as not to come into contact with the surface of the mirror 11. Then, as shown in FIG. 7, the metal fitting 7 screwed to the holder 14 on the back side of the mirror 11
2, 73, 74 fixed. The metal fitting 72 is used for holding the mirror 11 against the mirror 11 and pressing the mirror 11 against the supporting portion 68b, and the metal fitting 74 is used for pressing the mirror 11 against the supporting portion 68c. Hardware 73 is mirror 1
1 is used only for retaining the spring, and the spring 75
Press.

Therefore, the mirror 11 is supported at three points by the support portion 68, and when the holder 14 is disposed at a predetermined position, the load of the mirror 14 can be received at three points to reliably set a predetermined surface.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing a main part of a photographic printing apparatus equipped with a digital kit according to the present invention.

FIG. 2 is a similar schematic side view of the photographic printing apparatus shown in FIG.

FIG. 3 is an explanatory view schematically showing the configuration of a digital kit.

FIG. 4 is a plan view of an optical unit.

FIG. 5 is a schematic explanatory view schematically showing a longitudinal section of the optical unit shown in FIG. 4;

FIG. 6 is a partial perspective view of the holder holding the mirror as viewed from the mirror side.

FIG. 7 is a partial perspective view similar to FIG. 6 viewed from the holder side.

FIG. 8 is a schematic explanatory view of a conventional photographic printing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Photo printing device 4 CRT 6 Optical unit 9 Submirror 11 Main mirror 43 Printing lens 54 Optical axis 56a, 56b Boundary surface

Claims (1)

[Claims] 1. A first optical system having a diffusing light beam for printing a photographic image from a photographic film on a photosensitive material on an exposure table, and a second optical system for printing a video image displayed on a CRT, The second optical system has a mirror tilted with respect to the optical axis of the first optical system that enters and exits the light beam of the first optical system, and the second optical system is configured to switch a photographic image. During recording, the light beam of the first optical system is moved linearly from the light beam of the first optical system and retracted to the outside of the boundary surface inclined in the same direction as the mirror among the boundary surfaces defining the light beam of the first optical system. A mirror moving structure for a photographic printing apparatus, characterized in that: