JPS62231240A - Printing method for crt image containing character - Google Patents

Abstract

PURPOSE:To easily print characters excellent in quality on photosensitive paper by mounting a character plate on the display screen of a CRT across a diffusing plate, and forming and printing the images of a displayed CRT image and characters of the character plate liquid by the CRT through the diffusing plate on the lens photosensitive paper. CONSTITUTION:The diffusing plate 19 is mounted on the CRT11 in a character recording area shown by hatching 12a so that it can be replaced, and the character plate 18 is placed thereupon; and this diffusing plate 19 diffuse linear light from the CRT11 to prevent lateral lines from appearing on the characters. Simultaneously with the printing of the CRT image, the character recording area 12a on the CRT display screen 12 emits light corresponding to the color of the characters. This CRT display screen 12 emits light linearly on a scanning lines, but this liner emitted light is diffused by the diffusing plate 19 to light the character plate 18 with the diffused light from the diffusing plate 19 and the recorded characters are printed in desired color on the color photosensitive paper 10. Consequently, lateral lines are prevented from appearing on the characters recorded on the photosensitive paper and the high quality characters are recorded.

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, a CRT printing device is used, and a computer combines 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.

In addition, a character stamping unit consisting of a dial and a light source is used, and the character stamping unit is placed in front of the CRT so that the dial is in close contact with the photographic paper. A device in which characters are printed has been proposed.

[Problem that the invention seeks to solve]

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.

Also, when printing characters displayed on a CRT onto photographic paper using a lens, the CRT emits light in a linear manner, so for example, black characters will have white horizontal lines corresponding to pinched scanning lines.
The quality of recorded characters deteriorates.

In addition, when contact exposure is performed using a character engraving unit, a light source, a unit body, and a member to support the unit body are required, resulting in a complicated structure and high cost. be.

The present invention solves the problems of both character printing using a CRT and character printing unit, and makes it possible to easily print characters with good quality on photographic paper. is intended to provide a method.

[Means for solving problems]

In order to achieve the above object, the present invention attaches a dial to the display surface of a CRT via a diffusion plate, and displays a CRT image displayed on the display surface of the CRT and a dial illuminated by the CRT via the diffusion plate. The characters on the dial were imaged onto photographic paper using a lens and printed onto the photographic paper. The dial and the diffuser plate may be integrated by bonding or the like, or may be separable. If it is necessary to change the character position according to the CRT image, the diffuser plate and dial plate are overlapped on the display surface of the CRT, and if there is no need to change the character position, the diffuser plate is bonded on the display surface of the CRT. and place the dial on top of it.

Further, when the characters to be used and their positions are determined, it is convenient to bond the diffuser plate and the dial plate, and then bond them to the display surface of the CRT.

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 arranged facing the color photographic paper 10.
The CRT image displayed on the display surface 12 of
An image is formed on the color photographic paper IO. The CRTI
When printing, I sequentially displays a black-and-white image of a negative red image, a green image, and a blue image expressed in brightness for about 1 second each, but in order to convert this black-and-white image into a monochrome image of red, green, and blue , lens 13 and color photographic paper 10
A red filter 14. A green filter 15 and a blue filter 16 are arranged, and a filter switching section 17
is selectively inserted into the optical path of the lens 13. 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 the characters, a dial plate 18 on which characters are recorded is used. This dial 18 is a CRTI
I is used as a light source for printing, and the characters on the dial 18 are printed on the color photographic paper 10 by the light emitted from the CRT II. If the dial plate 18 is mounted directly on the CRTIIO, if the characters have horizontal lines, or if small characters are located between the scanning lines, it will not be possible to print them, similar to character printing using a CRT. . Therefore, CR
A diffusion plate 19 for diffusing light is placed on top of the TII,
A dial 18 is placed on top of it. The characters recorded on the dial plate 18 are printed on the color photographic paper 10 at the same time as the CRT image is printed, but instead of this, the CRT image is sometimes printed by applying an electric mask to the part that overlaps with the dial plate 18. If you prevent this part from emitting light, CR
T images and characters can be printed separately.

A lithographic negative is used as the dial 18, and it can be easily created by photographing an original using a lithographic negative. When an original with black characters written on a white background is photographed, the text negative is recorded in white 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.
The CRT image is printed onto the color photographic paper IO by opening and closing the 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 the part where the characters are printed. The CRTll has a diffuser plate 1 in the character recording area indicated by hatching 12a.
9 is placed in a replaceable manner, and a dial 18 is stacked thereon. This diffuser plate 19 diffuses the linear light emitted from the CRTII to prevent horizontal lines from appearing on the characters. If a CRT image exists in the character recording area 12a, this CRT image is erased, data corresponding to the color of the characters to be recorded is written, and the CRTII is made to emit light using this data.

For example, using a dial 18 with transparent text,
If the character recording area 12a is made to emit light during red exposure with the red filter 14 inserted in the optical path, cyan characters are recorded on a white background on the printed photograph. Also, during green exposure using the green filter 15, the character recording area 12a
When the light is emitted, characters colored magenta through development processing are recorded on the color photographic paper IO. Furthermore, in any case of three-color exposure, black characters can be recorded by emitting light from the character recording area 12a, and by changing the ratio of three-color exposure, characters of a desired color can be recorded. .

The dial 18 can be set at any position on the CRTII. Depending on the position of the dial plate 18, the position and size of the character recording area 12a and the color of the characters are specified using the keyboard. Note that when a portion of a constant width along one side of the CRT II is used as a character recording area, it is preferable to display the CRT images in a manner that avoids this character recording area.

In this way, for example, it is possible to display the entire image on the CRT II without partially erasing the image input with a TV camera, and to create a printed photograph with characters recorded on the left and right or top and bottom of the image.

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, outputs a red video signal, a green video signal, and a blue video signal, and sends these to A. /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. Further, a computer graphic image (C0 image) written on the floppy disk 34 or the magnetic tape 35 can be input to the control circuit 32 via the storage medium drive circuit 36. Furthermore, a C0 image can also be input using a digitizer. The keyboard 37 is used not only to control each part but also to change the position, size, and color of the character recording area 12a. Further, the position of the CRT image can be changed by operating the keyboard 37 to change the writing position in the frame memory 33. Furthermore, the control circuit 32 controls the color TV camera 3.
By adding the image input as 0 and the image input from the floppy disk 34 or the like pixel by pixel, image synthesis can be performed electrically.

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 lookup table memory 38 is D
The signal is converted into an analog signal by the /Δ converter 39 and then sent to the switching circuit 40. This switching time! i! 340 is a monitor lookup table memory 38a during monitoring.
The three-color signal of the positive image outputted from the CRT controller 41 is sent to the CRT controller 41, and the CRT image is displayed on the color CRT 42 for monitor. Further, during printing, the three-color signals of the negative image output from the print look-up table memory 38b are sent to the selection circuit 43. This selection circuit 43 takes out any one of the three color signals and outputs it to the CRT controller 4.
4 and display the black and white image on the CRT II for printing.

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

The image input from the color TV camera 30 and the C0 image 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 lookup table memory 38a is selected and the switching circuit 40 is switched to the CRT controller 41 side, so that the input image or the synthesized CRT image is transferred to the monitor color CRT 42. Displayed as a positive image. While looking at this monitor color CRT 42, the user operates the keyboard 37 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, and this is superimposed on the diffuser plate 19 for the CR.
Place it on TIIO. 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 this dial 18, the character recording area 12a
The position and size of 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, D/A conversion 53
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 converted into a green image by a green filter 15, and is exposed to color photographic paper lO. Similarly, a blue image is exposed to the color photographic paper IO for about 1 second. When a CRT image is printed on the color photographic paper 10 by this three-color plane sequential exposure method, the unexposed portion is pulled out from the supply reel 22, and the exposed portion is wound onto the take-up reel 25.

Simultaneously with the printing of the CRT image, the character recording area 12a of the CRT display surface 12 emits light in accordance with the color of the characters. The CRT display surface 12 emits linear light at the scanning line portion, and this linear light emission is diffused by the diffusion plate 19. Dial board 1
8 is illuminated with diffused light from a diffuser plate 19, and the characters recorded thereon are printed onto 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 described in detail above, according to the present invention, a dial is attached to the display surface of a CRT via a diffusion plate, and the dial is illuminated with light that is diffused by the diffusion plate from the linear light emitted from the CRT. Therefore, it is possible to prevent horizontal lines from appearing on characters recorded on photographic paper and to record high-quality characters. Furthermore, if the characters recorded on the dial are small and are located between adjacent scanning lines, it will not be possible to record this with the dial alone, but the present invention uses a diffuser plate. Because of this, even such small characters can be clearly recorded. Furthermore, since a CRT is used as a light source, a conventional character insertion unit is not required, and costs can be reduced accordingly. Furthermore, since the diffuser plate and the dial plate are simply attached to the CRT, the operation is simple and it is also possible to print characters in any desired position. Furthermore, 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 structure of the character printing section. FIG. 3 is a block diagram showing an example of a CRT exposure system. 10...Color photographic paper 11...CRT 12...Display surface 12a...Character recording area 18...Dial board 19...Diffusion plate 42...CRT for monitor. Procedural amendment March 27, 1986

Claims (3)

[Claims] (1) A dial is attached to the display surface of a CRT via a diffuser plate, and a lens is used to capture the CRT image displayed on the display surface of the CRT and the characters on the dial illuminated by the CRT via the diffuser. A method for printing a CRT image with text, which is characterized by forming and printing an image on photographic paper. (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.