JPS62295038A - Photographic printing device for crt picture - Google Patents

Abstract

PURPOSE:To form a color printing photograph and a color photographing film, e.g., a color slide film, by freely attachably and detachably arranging a camera unit equipped with a color photographing film in front of color printing paper. CONSTITUTION:The camera unit 25 equipped with the color photographing film is freely attachably and detachably arranged in the front of the color printing paper 12 and a red light extinction filter 28 is fitted to the camera unit 25. The device is provided with a positive/negative switching means for displaying a positive image when the camera unit 25 is inserted into the optical path, or displaying a negative image when the camera unit 25 is receded from the optical path. In such case, a color reversal film or a color instant film is used for the color photographing film. Thus, a color reversal film and color photographing film an be formed.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a CRT image photographic printing apparatus, and more particularly, to a CRT image photographic printing apparatus for selectively printing a video image on color photographic paper and color photographic film. It relates to a device that can be burned.

[Conventional technology]

Recently, operations for creating slide films using CRT image photo printing devices have begun to be carried out in the United States and other countries.

This CRT image photo printing device uses a black and white CRT that displays three color images in black and white, and a three color filter is placed between the black and white CRT and a color reversal film.
These color filters are selectively inserted into the optical path to convert each black and white image into a monochromatic image, and the color image is printed using a trichromatic sequential exposure method.

[Problem that the invention seeks to solve]

In the slide creation service mentioned above, if the finish is not good, a modified color reversal film is created according to the customer's request. Since this is costly, it is desirable to create a color print photograph and send it to the client for color proofing before creating the color reversal film. Additionally, some customers may request both color reversal film and color print photographs. However, conventional CRT image photo printing devices cannot produce both color reversal films and color photographs with a single device.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a camera unit loaded with color photographic film in front of the color photographic paper so that it can be taken in and out, a red neutral density filter is attached to the camera unit, and a red color neutral density filter is attached to the camera unit. The camera unit is characterized by providing a positive/negative switching means for displaying a positive image when the camera unit is inserted into the optical path and displaying a negative image when the camera unit is retracted from the optical path.

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

〔Example〕

In FIG. 1, a magazine 1) is removably set in the upper left part of the main body 10, and color photographic paper 12 is set inside the magazine 1).
is stored rolled up. The color photographic paper 12 is intermittently pulled out by a pull-out roller 13, enters an exposure chamber 14, and is sent to an exposure position formed between an easel mask 15 and a pressure plate 16.

A black and white CRT (hereinafter simply CR
18 (referred to as T) are arranged. This CRT18 is
When the color photographic paper 12 is exposed, a black and white image in which a red image, a green image, and a blue image of the negative image are expressed in terms of brightness is sequentially displayed for about 1 second each, and this black and white image is converted into a monochrome image of red, green, and blue. In order to do this, CRT18 and lens 1
9, a red filter 20. Green filter 21. A blue filter 22 is arranged, and the filter switching section 2
3, it is selectively inserted into the optical path of the lens 19.

As this lens 19, a zoom lens, a turret holding a plurality of lenses having different focal lengths, or the like is used in order to adjust the printing magnification of the CRT image. Also,
A shutter 24 is arranged in front of the exposure position, and its opening and closing are controlled by a shutter drive section 25. This shutter 2
4 opens and closes three times in total, once for each color, to print a color image on the color photographic paper 12.

A camera unit 25 is provided behind the lens 19 and can be moved in and out of the optical path. This camera unit 2
5, a 35 mm camera or a 4×5 format camera is used, and a color reversal film 26 is loaded inside, and a red neutral density filter 28 is installed in front of the lens 27.
is installed. This camera unit 25 opens and closes the color reversal film 2 after opening and closing the shutter 33 three times.
A multi-M exposure mechanism (not shown) is provided to wind up 6 by one frame. Note that it is also possible to use a color negative film instead of the color reversal film, and as the camera unit 25, an instant camera loaded with an instant color film can be used.

As shown in FIG. 2, the camera unit 25 is mounted to a base 29 via a tripod screw. In this installation, a feed screw shaft 30 is screwed into the base 29, and when rotated by a motor 31, it moves along a guide shaft 32.
inserted into the optical path.

A developing chamber 40 for photographically developing the color photographic paper 12 is formed on the right side of the exposure chamber 14.

In this developing chamber 40, a color developing tank 42. Bleach-fix tank 4
3. Washing tank 44. Drying drum45. A cutter 46 is provided, and a number of rollers 47 for transporting the color photographic paper 12 are arranged. When a certain number of frames have been printed, a cutter 41 placed on the right side of the easel mask 15 is activated to cut the color photographic paper 12 into short pieces.

This short color photographic paper 12 is sequentially immersed in each processing tank, subjected to color development, bleach-fixing, and washing with water.

This photographically processed color photographic paper 12 is transported to a drying drum 4.
After being dried in step 5, it is cut into one frame by a cutter 46, and then discharged onto a tray 48.

FIG. 3 shows the electrical circuit. A color TV camera 51 or the like is used as an image input unit, and this color T
The V camera 51 subjects the subject to three-color separation photometry, outputs a red video signal, a green video signal, and a blue video signal, and sends these to the A/D converter 52. These video signals are subjected to logarithmic conversion and color correction (masking processing) in the control circuit 53, and then sent to the frame memory 54, where they are stored separated for each color. Also, floppy 5
5 or a computer graphic image (CG image) written on the magnetic tape 56 can be manually input to the control circuit 53 via the storage medium drive circuit 57. Furthermore, CG images can also be input using a digitizer. The control circuit 53 can electrically synthesize images by adding the image input from the color TV camera 51 and the image input from the floppy disk 55 or the like pixel by pixel. The keyboard 58 includes various input keys and is used to operate each part. The keyboard 58 is also provided with a photographic paper exposure key 59 and a photographic film exposure key 60.

The color signals stored in the frame memory 54 are read out during printing and stored in the lookup table memory 62.
sent to. This lookup table memory 62 is
It consists of a negative 62a and a positive 62b. The negative look amplifier table memory 62a is used in a photographic paper exposure system, and performs positive/negative inversion and gradation correction according to the characteristics of the color printing IF 12. The positive look-up table memory 52b is used in a photographic film exposure system, and performs gradation correction on the input positive image according to the characteristics of the color reversal film 29.

The three-color video signal output from the look-up table memory 62 is converted into an analog signal by a D/A converter 63, and this analog signal is sent to a selection circuit 64.

This selection circuit 64 extracts any one of the three color signals and sends it to the CRT controller 65 to display a monochrome image on the CRT 18.

FIG. 4 shows the spectral sensitivity of color photographic paper, and FIG. 5 shows the spectral sensitivity of color reversal film. As shown in these drawings, the spectral sensitivity differs depending on the type of color-sensitive layer, and color reversal film has a sensitivity about 10 times that of color photographic paper. Therefore, the exposure amount is changed depending on the photosensitive layer,
Moreover, it is necessary to change the exposure amount depending on the type of photosensitive material.

The sensitivity of the red-sensitive layer of color photographic paper is toward the infrared, so when a typical CRT is used, red exposure takes about one minute. Therefore, in this embodiment, in order to be able to efficiently create printed photographs, a high-brightness CRT is used, and P as a phosphor is used.
A mixture of 45 and P22 at a ratio of 1:4 is used to increase the luminance in the red wavelength range and reduce the luminance in the blue wavelength range. In addition, CRT with increased luminance of this red color
and a color filter 20~ having the spectral transmittance shown in FIG.
22, the exposure time for each color is only about 1 second for color photographic paper.

As mentioned above, the sensitivity of color reversal film is
Since it is about 10 times that of color photographic paper, when exposing a color reversal film, it is necessary to lower the exposure amount to about 1000.

In addition, in color reversal film, since the sensitivity of each color sensitive layer is almost the same, CR
If the spectral brightness is set to T, red will be overexposed. Therefore, in order to reduce the amount of red light exposure, a red light attenuation filter 28 is used. As this red color neutral density filter 28, a bandpass filter (B PM-60) having the spectral characteristics shown in FIG. 7 is used. Note that instead of BPM-60, for example, ND
=1 may be used.

Next, the operation of the embodiment described above will be explained.

The image input from the color TV camera 51 and the 00 image input from the floppy disk 55 or magnetic tape 56 are
After the image is processed by the control circuit 53, the frame memory 5
4 are written separately for each color. Furthermore, when a plurality of images are input at the same time, the images are combined by the control circuit 53 by operating the keyboard 58. In addition, when inputting images and compositing images, a monitor (not shown)
You can do it while watching.

When printing a video image on color photographic paper 12,
Operate the photographic paper exposure key 59 on the keyboard 58. The three-color signals read from the frame memory 54 are subjected to positive/negative inversion and gradation processing in a negative look-up table memory 62a, and then converted to analog signals by a D/A converter 63. The analog signal is sent to selection circuit 64.

The selection circuit 64 first takes out the red signal and sends it to the CRT.
The image is sent to the controller 65, and an image corresponding to the brightness of the red image is displayed on the CRT 18. When the red image is displayed in black and white on this CRT 18, the red filter 20 is inserted into the optical path of the lens 19, and the black and white image displayed on the CRT 18 is converted into a red image. In this state, the shutter 24 is opened for an exposure time, for example, about 1 second, which is determined according to the red sensitivity of the color photographic paper 12, and a red image is printed on the color photographic paper 12 during this time.

After exposure of the red image, the shutter 24 is closed, during which the red filter 20 is retracted and replaced by the green filter 2.
1 is inserted. At the same time, the green image is displayed in black and white on the CRT 18. Immediately after this, in order for the shutter 24 to open again for a predetermined period of time, for example, about 1 second, the CRT 1
The black and white image displayed at 8 is converted into a green image by a green filter 21 and exposed onto color photographic paper 12. Similarly, a blue image is exposed to color photographic paper 12 for about one second. When the CR7 image is printed on the color print IE 12 by this three-color plane sequential exposure method, the unexposed portion is pulled out from the magazine 1), and the exposed portion is sent toward the developing chamber 40.

The above procedure is repeated, and a plurality of color images are sequentially printed on the color photographic paper 12 and stored in a loop in the developing chamber 40. Once a certain number of frames have been burned,
The cutter 41 operates to cut the exposed color photographic paper 12 into short pieces and transport them toward the color developing tank 42 . This short color photographic paper 12 is stored in a color developing tank 4.
2. Bleach-fix tank 43. Washing tank 44. A photographic development process is performed by sequentially passing through the drying drum 45, and a positive image is formed on each frame. Finally, the paper is cut into individual frames by a cutter 46 and then discharged onto a tray 48.

When photographing a video image on color reversal film, the photographic film exposure key 60 is operated. This causes the motor 31 to start, rotate the feed screw shaft 30, and insert the camera unit 25 into the optical path. When photographing this color reversal film, the control circuit 53 selects the positive look-up table memory 62b, so a video signal of a positive image is sent to the CRT 18, and the display screen of the CRT 18 has its luminance reduced to 1/10. A positive image is displayed.

When this photographic film exposure system is selected, the shutter 24
Then, the photographic developing section becomes inactive, and the camera unit 25 operates instead to print a color image on the color reversal film 26 using a three-color sequential exposure method. That is, the shutter 33 of the camera unit 25 operates in synchronization with the insertion of the color filters 20 to 22 into the optical path, and a positive color image is captured through three multiple exposures.

When the three multiple exposures are completed, the built-in motor will
The color reversal film 26 is wound up by one frame, and the unexposed portion is set at the exposure position. When all the frames have been photographed, the exposed color reversal film 26 is taken out from the camera unit 25 and replaced with a new one. The exposed color reversal film 26 is photographically processed in a photographic developing device. In addition, camera unit 2
A shutter may be provided in front of the shutter 5, and the built-in shutter 33 may be used for pulp photography to perform three-color sequential exposure.

〔Effect of the invention〕

As explained in detail above, according to the present invention, since the camera unit loaded with color photographic film is provided in front of the color photographic paper so that it can be taken out and put in freely, one device can print both color print photographs and color photographic film, e.g. You can create slide films.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the configuration of an apparatus implementing the present invention. FIG. 2 is a perspective view of the camera unit. FIG. 3 is a block diagram showing the electric circuit. FIG. 4 is a characteristic curve diagram showing the spectral sensitivity of color photographic paper. FIG. 5 is a characteristic curve diagram showing the spectral sensitivity of a color reversal film. FIG. 6 is a characteristic curve diagram showing the spectral transmittance of a color filter. FIG. 7 is a characteristic curve diagram showing the spectral transmittance of a bandpass filter. 12... Color photographic paper 18... CRT 20... Red filter 21... Green filter 23... Blue filter 24... Shutter 25... Camera unit 26... Color reversal film 28... ...Dimmer filter 33...Shutter. ■Shimoku■ Sect procedure Nelti correct fortune telling 1. Indication of the case 1986 Patent No. 139644 2, Name of the invention CRT image photo printing device 3, Person making the amendment Relationship to the case Patent applicant address 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture Name (520)
) Fuji Photo Film Co., Ltd. 4, Agent ◎170 2-25-1 Kita-Otsuka, Toshima-ku, Tokyo (1) "Detailed description of the invention" and "Drawings 6,
Contents of amendment (1) Figure 7 of the drawings will be deleted. (2) From page 10, line 19 of the specification to page 1), line 2 of “
. . . shown in FIG. 7 may also be used. " is corrected to "For example, LBB-8, CC-40C, etc. are used." (3) "Figure 7 is...
... is a characteristic curve diagram. ” to be deleted. that's all

Claims (3)

[Claims] (1) A red filter, a green filter, and a blue filter are placed in the optical path between the monochrome CRT and the color photographic paper, and by selectively inserting these filters into the optical path, the black and white images displayed on the monochrome CRT are In a CRT image photo printing device that converts an image into a monochromatic image and prints the color image on color photographic paper by sequential exposure of three color planes, a camera unit loaded with color photographic film is installed in front of the color photographic paper so that it can be freely inserted and removed. A red neutral density filter is attached to this camera unit, and a positive/negative filter is installed to display a positive image when the camera unit is inserted into the optical path, and to display a negative image when the camera unit is retracted from the optical path. A CRT image photo printing device characterized by being provided with a negative switching means. (2) The CRT image photographic printing apparatus according to claim 1, wherein the color photographic film is a color reversal film. (3) The CRT image photographic printing apparatus according to claim 1, wherein the color photographic film is a color instant film.