JPS62222232A - Printing method for crt image including character - Google Patents

Abstract

PURPOSE:To simplify a device and to print out a CRT image including clear characters by fitting a character plate to the display surface of the CRT, forming the CRT image and characters on printing paper through a lens and printing out the formed image. CONSTITUTION:A CRT image is displayed on the display surface 12 of the CRT. The image is converted into black-and-white images obtained by decomposing the negative image into three colors, i.e. red, green and blue. The black-and- white images of respective colors are successively passed through a lens 13 and red, green and blue monochromatic images are obtained through red green and blue filters 14-16 corresponding to respective colors and printed out on color printing paper 10 by opening a shutter 20 every for about one second. The character plate 18 recording character is fitted to the display surface 12 and the characters are simultaneously printed out on the color printing paper 10 by using the CRT11 as a light source. The CRT11 as a light source. The CRT image is prevented from being superposed to the character plate 18 by electrically masking the CRT image. Since the character plate is fitted to the CRT display surface and the CRT is used as the light source, the device can be simplified and characters can be prevented from being defocused.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for printing a CRT image with text used to create a printed photograph containing a mixture of CRT images and text.

[Conventional technology]

Recently, printed photographs, in which images and text are printed on photographic paper, have been widely used as postcards. In order to create a printed photograph containing a mixture of images and text in this way, a CRT printer is used, and a computer synthesizes the video signal input from an image input device, such as a TV camera, with the characters input from a keyboard. This composite image is displayed on a CRT and printed on photographic paper.

Generally speaking, contrast is more important than gradation for text and line drawings, but when printing text on a CRT,
Contrast decreases and edges blur.

Therefore, when printing clear characters, a character insertion unit consisting of a dial and a light source is used, and the dial is brought into close contact with photographic paper to print the characters.

[Problem that the invention seeks to solve]

The above-mentioned character insertion unit that performs contact exposure requires a light source, a unit body, and members to support the unit body, so the structure is complicated and costs are high. be. Furthermore, contact exposure may cause blurring due to poor contact, and there is also the problem that characters cannot be printed in arbitrary positions.

The present invention provides a method for printing a CRT image containing characters, which allows printing of clear characters in a simple manner without using any special equipment, and also allows the characters to be printed in any desired position. The purpose is to

[Means for solving problems]

In order to achieve the above object, the present invention is such that a dial plate with characters is attached to the display surface of a CRT, and the CRT image and the characters are formed and printed on photographic paper.

This dial plate is superimposed on the display surface of the CRT when it is necessary to change it according to the CRT image, and is bonded to the display surface of the CRT when it is not necessary to change it.

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

〔Example〕

A black and white CRT (hereinafter simply referred to as CRT) 11 is placed opposite the color photographic paper 10, and this CRT II
The CRT image displayed on the display screen 12 of is focused onto color photographic paper 10 by a lens 13. Said CRTII
When printing, a black-and-white image in which the red, green, and blue images of the negative image are expressed in brightness is sequentially displayed for about 1 second each. , a red filter 14 . between the lens 13 and the color photographic paper 10 . A green filter 15 and a blue filter 16 are arranged, and are selectively inserted into the optical path of the lens 13 by a filter switching section 17. A zoom lens is used as the lens 13 in order to adjust the printing magnification of the CRT image, but a turret holding a plurality of lenses with different focal lengths may be used instead.

In order to synthesize the CRT image and characters, a dial plate 18 on which characters are recorded is replaceably attached to the display surface 12 of the CRT II. By using the CRTll as a light source, this dial plate 18 prints the characters recorded on the dial plate 18 onto the color photographic paper 10 at the same time as the CRT image is printed. Incidentally, when printing a CRT image, it is sometimes possible to print the CRT image and characters separately by applying an electric mask to the portion overlapping the dial plate 18 to prevent this portion from emitting light.

A lithographic negative is used as the dial 18, and it can be easily created by photographing an original using a lithographic negative. When a document with black text on a white background is photographed, the text negative is recorded as white text with transparent text.

If you photograph an original with white text (or black surroundings),
It is possible to obtain a lithographic negative in which everything except the text is transparent.

When recording colored characters on the color photographic paper 10, it is sufficient to use a lithographic negative in which the characters are transparent, and to adjust the ratio of the three-color exposure amount.

Note that the dial plate 18 is not limited to a lithographic negative, but may also be a transparent or opaque plastic sheet with letters printed on it.

A shutter 20 is arranged in front of the color photographic paper 10, and its opening and closing are controlled by a shutter control section 21.

The shutter 20 opens and closes three times in total, once for each color, to print a color image on the color photographic paper 10. In addition, if you do not mind a slight decrease in resolution, use a color CRT.
A CRT image is printed on color photographic paper 10 by opening and closing a shutter 20 once.

The color photographic paper 10 is pulled out by one frame from the supply reel 22 every time one frame of printing is completed, and the printing paper surrounded by the easel mask 23 and the pressure plate 24 is sent to a position, and the exposed area is is wound onto the take-up reel 25. Note that the numbers 26 and 27 are rollers.

FIG. 2 shows a CRT and a dial.

In the CRTII, a dial 18 is placed in a portion indicated by hatching 12a. In this portion 12a, the CRT image is erased, and the CRT II emits light according to the color of the characters to be recorded. For example, if the dial 18 with transparent text is used and the CRTll part 12a is made to emit light during red exposure with the red filter 14 inserted in the optical path, cyan text will be recorded on a white background on the printed photograph. be done. Also,
During green exposure using the green filter 15, the portion 12a
When the light is emitted, characters colored magenta through development processing are recorded on the color photographic paper 10.

Furthermore, in any case of three-color exposure, black characters can be recorded by emitting light from the portion 12a, and characters of a desired color can be recorded by changing the ratio of three-color exposure.

The character Fj, 18 can be set at any position on the CRTll. Depending on the position of the dial plate 18, the position and size of the portion 12a overlapping with the dial plate and the color of the characters are specified using the keyboard.

Note that when a portion of a certain width along one side of the CRT II is used as a character insertion portion, and the dial 18 is placed on top of this portion, it is preferable to display the CRT image so as not to overlap with the dial 18. In this way, for example, the entire image input with a TV camera can be displayed on the CRTII without partially erasing it, and a printed photograph with characters recorded on the left and right or top and bottom sides of the image can be created.

FIG. 3 shows a circuit of a CRT exposure system.

As the image input section, a color TV camera 30 or the like is used, and this color TV camera 30 performs three-color separation photometry of the subject and outputs a red video signal, a green video signal, and a blue video signal, respectively. /D converter 31. These video signals are subjected to logarithmic conversion and color correction (masking processing) in the control circuit 32, and then sent to the frame memory 33, where they are stored separated for each color. In addition, computer graphic images (CG images) written on the floppy 34 or magnetic tape 35 should be recorded in ↑1g.
An input can be made to the control circuit 32 via the media drive circuit 36. Furthermore, CG images can also be input using a digitizer. The keyboard 37 is used not only to control each part but also to specify the position, size, and color of the dial 18. To change the position of the CRT image, operate the keyboard 37 to change the position of the frame memory 3.
This can be done by changing the writing position to 3. Furthermore, the control circuit 32 can electrically synthesize images by adding the image input from the color TV camera 30 and the image input from the floppy disk 34 or the like pixel by pixel.

The color signals stored in the frame memory 33 are read out during monitoring or printing and sent to the look-up table memory 38. This lookup table memory 38 is composed of a monitor 38a and a print 38b. The monitor 38a performs gradation correction on the input positive image according to the characteristics of the monitor CRT, and the print 38b performs positive/negative reversal and correction according to the characteristics of the color photographic paper 10. Perform gradation correction.

The output signal of the look amplifier table memory 38 is D
The signal is converted into an analog signal by the /A converter 39 and then sent to the switching circuit 40. During monitoring, this switching circuit 40 switches the positive (elephant tricolor signal) output from the monitor lookup table memory 38a to the CRT controller 40.
The CRT image is displayed on the monitor color CRT 42. Further, at the time of printing, the three-color signal of the color image outputted from the print look-up table memory 38b is sent to the selection circuit 43. This selection circuit 43 takes out any one of the three color signals and sends it to the CRT controller 44.
The black and white image is displayed on the CRT II for printing.

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

Images input from the color TV camera 30 and CC images input from the floppy 34 or magnetic tape 35 are
After the image is processed by the control circuit 32, the frame memory 3
3 are written separately for each color. Further, when a plurality of images are input at the same time, the images can be combined by the control circuit 32 by operating the keyboard 37. At the time of image input or image composition, the monitor look amplifier table memory 38a is selected and the switching circuit 40 is switched to the CRT controller 41 side, so that the manually inputted image or the synthesized CRT image is transferred to the monitor color CRT 42. Displayed as a positive image. Without looking at this monitor color CRT 42, the keyboard 37 is operated to adjust the position and color of the CRT image and the image composition state.

The characters to be combined with the CRT image are photographed on a screen negative to create a dial plate 18, which is placed on the CRTIIO. Here, in order to prevent the dial 18 from curling, it is preferable to place a transparent plate on top of it.

In order to illuminate the dial 18, its position and size are input using the keyboard 37. At the same time, the color of the characters is input from the keyboard 37. The control circuit 32 writes data into the frame memory 33 according to the input character information.

After the monitoring, the CRT image and characters are printed on the color photographic paper 10 by operating the keyboard 37. At the time of printing, the print lookup table memory 38
b is selected, and the switching circuit 40 is switched to the selection circuit 43 side. The three-color signals read from the frame memory 33 are stored in the look-up table memory 38b as positive and negative signals.
After negative inversion and gradation processing are performed, the A/D converter 3
9, it is converted into an analog signal. This analog-converted three-color signal is sent to a selection circuit 43 by a switching circuit 40.

The selection circuit 43 first takes out the red signal and sends it to the CRT.
The image is sent to the controller 44, and an image corresponding to the brightness of the red image is displayed on the CRTII. When a red image is displayed in black and white on this CRTII, a red filter 14 is inserted into the optical path of the lens 13, and the black and white image displayed on the CRTII is converted into a red image. In this state, the shutter 20 is opened for an exposure time, for example, about 1 second, which is determined according to the red sensitivity of the color photographic paper 10, and a red image is printed on the color photographic paper 10 during this time.

After exposure of the red image, the shutter 20 is closed, during which the red filter 14 is retracted and replaced by the green filter 1.
5 is inserted. At the same time, the green image is displayed in black and white on the CRTII. Immediately after this, in order for the shutter 20 to open again for a predetermined period of time, e.g.
The black and white image displayed on I is changed to the green side (
The image is converted into an image and exposed on color photographic paper 10. Similarly, a blue image is exposed to color photographic paper 10 for about one second. When a CRT image is printed on the color photographic paper 10 by this three-color sequential exposure method, the unexposed portion is pulled out from the supply reel 20, and the exposed portion is taken up on the take-up reel 25.

At the same time as the CRT image is burned, the portion 12 of the CRTII
Since a emits light according to the color of the characters, the characters recorded on the dial plate 18 are printed on the color photographic paper 10 in a desired color.

In the above embodiment, the printing of color images was explained, but the present invention can also be used for printing black and white images.

〔Effect of the invention〕

As explained in detail above, according to the present invention, a dial is attached to the display surface of a CRT, and the CRT is used as a light source for printing the dial, making the conventional character loading unit unnecessary. Cost reduction can be achieved. Further, since the dial plate is simply attached to the CRT, the operation is simple and characters can be printed in any position.

Further, in conventional contact printing, blurring is likely to occur due to poor adhesion, but in the present invention, such blurring does not occur.

[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 showing the relationship between the CRT and the dial. FIG. 3 is a block diagram showing an example of a CRT exposure system. 10...Color photographic paper 11...CRT 12...Display surface 12a...Dial board area 18...Dial board 42...CRT for monitor 0 Figure 1 Procedural Amendment Book 1986 3 27th of the month

Claims (3)

[Claims] (1) Attach the dial with letters on the display surface of the CRT,
A method for printing a CRT image with text, which is characterized by forming a CRT image and text onto photographic paper using a lens and printing the image. (2) The method for printing a CRT image with text as set forth in claim 1, wherein the dial is a lithographic negative. (3) The CRT is a monochrome CRT, and sequentially displays a monochrome image corresponding to a red image, a monochrome image corresponding to a green image, and a monochrome image corresponding to a blue image, and
Claim 1 characterized in that red, green, and blue filters are sequentially inserted into the optical path to convert the image into a monochromatic image, and the CRT image and characters are printed on photographic paper by sequential exposure of three colors. Or the method for printing a CRT image with characters as described in item 2.