JPH07104554B2 - Color printer - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual-purpose color printer capable of both printing a photographic film and a color video image.

[Conventional technology]

Halogen lamps are generally used as a printing light source in printers for producing printed photographs because they emit almost pure white light and can obtain a relatively large amount of light. Then, in a printing optical path formed between a color photographic film, for example, a color negative and a printing light source, cyan,
A filter device is provided in which magenta and yellow filters can be freely taken in and out, and the baking light adjusted by this filter device is mixed in a mixing box so that there is no unevenness, and then the color negative is illuminated. Also,
A video printer has also been proposed which uses a CRT and red, green, and blue color filters to perform three-color sequential exposure.

[Problems to be solved by the invention]

In the above-mentioned conventional printer, when printing photographic film,
Printing of color video images is designed to be performed by a dedicated machine, so when printing both,
There is a problem in that two printers are required, which causes facility cost. Further, the conventional CRT used for printing a color video image is expensive, and since the image is blurred, it is difficult to obtain a clear print.

The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a color printer capable of clearly printing a photographic film image and a color video image with one unit and having a simple structure.

[Means for solving problems]

In order to solve the above problems, the present invention provides a white light source provided at a position facing a color printing paper, and a red color filter, a green color filter, and a blue color filter that are inserted into a printing optical path connecting the white light source and the color printing paper. A film carrier for holding a photographic film, a liquid crystal display panel for displaying a video image for frame-sequential exposure, and a film image or a liquid crystal display for a frame to be printed on the photographic film while holding the film carrier and the liquid crystal display panel. An image exchange means for selectively positioning the video image displayed on the plate in the printing optical path; and a printing lens for forming a film image or video image of the frame to be printed positioned on the printing optical path by the image exchange means on a color photographic paper. , A display means for sequentially displaying red, green, and blue images on a liquid crystal display plate at the time of exposure for printing a video image, and a film image During printing exposure, each color filter is sequentially inserted into the printing optical path to perform three-color surface sequential exposure, and each color filter is sequentially inserted into the printing optical path according to the image displayed on the liquid crystal display panel during printing exposure of the video image, and the three-color surface is exposed. And a filter switching unit for performing sequential exposure.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

〔Example〕

The structure will be described with reference to FIGS. A photographic paper feeding mechanism 2 is arranged above the color printer main body 1, and the color photographic printing paper 3 wound in a roll shape is loaded in the feeding mechanism 2. An opening for exposure is formed in the mask 4 which is installed in the vicinity of the lower side of the color photographic paper 3 and is shielded by a shutter 6 installed below the mask 4 when not exposed.

A halogen lamp 5 as a light source is arranged so as to face the opening position of the mask 4. Between the halogen lamp 5 and the shutter 6, a light diffusion box 7, a well-known negative carrier 9 and a turret 8 to which a liquid crystal display panel 10 is attached in this order from the ones located in the vicinity of the halogen lamp 5. RGB filter switching unit 11 that inserts red, green, and blue filters 31, 32, and 33 into the printing optical path in sequence
Twelve are arranged.

A driver 20 is connected to the liquid crystal display panel 8, and an RGB selector 21 is connected to the driver 20.
The RGB selector 21 is connected to a first look-up table 22 for gradation-correcting the image signal sent from the image memory 24 and converting a positive image into a negative image. The image signal from the image memory 24 is also sent to the second look-up table 23 for gradation correction, and is displayed on the monitor 27 via the driver 26 as an image. The image captured by the color TV camera 25 is stored in the image memory 24.

The operation of printing the color negative 30 will be described with reference to FIGS. First, the turret 8 is rotated to insert the negative carrier 9 into the printing optical path. While setting the color negative 30 on this negative carrier 9,
The RGB filter switching unit 11 sequentially inserts the red, green, and blue filters 31, 32, and 33 into the optical path. For example,
First, the red filter 31 is inserted. This red filter
The opening time of the shutter 6 is adjusted in accordance with the density of the negative image that has passed through 31, and the color photographic paper 3 is properly exposed. Similarly, the green filter 32 and the blue filter 33 are sequentially inserted to perform the second and third exposures. As mentioned above,
One color negative is exposed three times, and a color image is printed on the color photographic paper 3 by sequential addition color printing.

Next, the operation of printing a color video image on the color printing paper 3 will be described with reference to FIG. First,
The turret 8 is rotated to insert the liquid crystal display panel 10 into the printing optical path. On the other hand, in the image memory 20, a color TV camera
The image signal sent from 25 is stored separately for each color of red, green, and blue. These stored images are sent to the first look-up table 22 and the second look-up table 23. The image signal sent to the first look-up table 22 is tone-corrected and inverted from a positive image to a negative image. The image signals of the respective colors are selected by the RGB selector 21 and sequentially sent to the liquid crystal display panel 10 via the driver 20 to sequentially display the three-color images of negative images. For example, RGB
The selector 21 takes out the negatively-inverted red signal and sends it to the driver 20 to display an image corresponding to the brightness of the red image on the liquid crystal display panel 10. At this time, the image signal sent to one of the second look-up tables 23 is gradation-corrected and then displayed as an image on the monitor 27 via the driver 26. The image density of is adjusted. Thus, the liquid crystal display board 10
When the red image is displayed in black and white, the red filter 31 is inserted into the optical path by the RGB filter switching unit 11, and the monochrome image displayed on the liquid crystal display board 10 is converted into a red image. In this state, the shutter 6 is opened for the exposure time determined according to the red sensitivity of the color photographic paper 3, and the red image is printed on the color photographic paper 3 during this period.

After the exposure of the red image, the shutter 6 is closed, the red filter 31 is retracted between them, and the green filter 32 is inserted instead. At the same time, a green image is displayed in monochrome on the liquid crystal display board 10. Thereafter, as in the case of the red image, the green image and the blue image are sequentially printed on the color printing paper 3. This three-color sequential exposure completes the printing of one color print.

The image signal stored in the image memory 20 can be input not only from the color TV camera 25 but also from various video devices such as a still video camera.

〔The invention's effect〕

As described above, according to the present invention, a film image of a frame to be printed of a photographic film or a video image displayed on a liquid crystal display plate is selectively printed by an image exchanging means holding a film carrier and a liquid crystal display plate. Since it is positioned at, the two kinds of images can be selected and printed with only one printing optical path. Therefore,
The light source, the printing lens, the shutter, and the filter switching unit can be shared, and the configuration can be simplified. In addition, the two types of images can be easily and reliably exchanged without performing troublesome optical axis alignment and the like each time.

Further, display means for sequentially displaying red, green, and blue images on the liquid crystal display plate during image-printing exposure of the video image, and each color filter is sequentially inserted into the image-printing optical path during image-printing exposure of the film image, and three-color surface sequential exposure is performed. The image of the photographic film is simple with a filter switching unit that inserts each color filter into the printing optical path in sequence according to the image displayed on the liquid crystal display plate during printing exposure of the video image and performs three-color sequential exposure. And the video image can be selectively color printed on color photographic paper.

Furthermore, since the video image is displayed on the liquid crystal display board, compared to the case of using a CRT, the power consumption is extremely low, the size and weight can be reduced, and there is no bleeding that occurs when the CRT is used. Video images from a still video camera can be printed and exposed clearly.

Also, since a liquid crystal display board is used, switching between video images and film images can be performed more easily than when using a CRT, and the video image is synergistic with the configuration using a filter switching unit. The operating feeling is the same between the printing exposure and the film image printing exposure, and the operating procedure is the same, so that the video image and the film image can be printed and exposed without a feeling of discomfort. In this way, the video image and the film image can be selected equivalently in handling and psychologically. Therefore, it is possible to realize a compact and low-cost dual-purpose machine with high performance, and to meet the demands of diversifying minilabs.

[Brief description of drawings]

FIG. 1 is a schematic view of a main part showing an embodiment of the present invention. FIG. 2 is a schematic view of a main part in printing a color image recorded on a photographic film in one embodiment of the present invention. FIG. 3 is a schematic view of a main part in printing a color video image in an embodiment of the present invention. 1 …… Main body 3 …… Color photographic paper 5 …… Halogen lamp 8 …… Turret 9 …… Negative carrier 10 …… Liquid crystal display board 11 …… RGB filter switching unit 30 …… Color negative.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Oshikoshi 2-26-30, Nishiazabu, Minato-ku, Tokyo Fuji Photo Film Co., Ltd. (72) Inventor Kunio Takagi 2-26-30, Nishiazabu, Minato-ku, Tokyo Fuji Photo Within Film Co., Ltd. (56) Reference JP-A-60-260929 (JP, A) JP-A-57-6835 (JP, A) JP-A-58-195391 (JP, A) Actual development Sho-58-190634 ( JP, U)

Claims (1)

[Claims] 1. A color printer for printing a color image on a color photographic paper, comprising: a white light source provided at a position facing the color photographic paper.
A red color filter, a green color filter, and a blue color filter that are inserted into a printing optical path that connects the white light source to the color printing paper; a film carrier that holds a photographic film; and a liquid crystal display panel that displays a video image for frame sequential exposure. An image exchanging means for holding the film carrier and the liquid crystal display panel and selectively positioning the film image of the frame to be printed of the photographic film or the video image displayed on the liquid crystal display panel in the printing optical path, and the image exchanging means to the printing optical path. A printing lens that forms a film or video image of a positioned print target frame on a color photographic paper, a display unit that sequentially displays red, green, and blue images on a liquid crystal display plate during printing exposure of the video image, and film. At the time of image printing exposure, each color filter is sequentially inserted into the printing optical path to perform sequential exposure of three color planes, and the video image is printed. Color printer characterized by comprising a filter switching unit that performs insert and three-color frame sequential exposure to successively printing optical path of each color filter in accordance with the image displayed on the liquid crystal display panel at the time of exposure.