JPS61140298A - Color picture recorder - Google Patents

Abstract

PURPOSE:To satisfy its image quality with low cost by using an FOT to use sampled picture element data twice at recording for exposure. CONSTITUTION:A video signal processing section consists of a signal input section I inputting an NTSC system color picture RGB and sampling a picture element signal of RGB color, an A/D converting section II reading twice the sampled signal are converting the signal into a digital signal, a digital signal processing section III burying intervals of scanning lines for making it unremarkable and applying gamma correction in matching with the sensitivity of a photosensitive material, a D/A converting section IV converting the digital signal into an analog signal, and an exposure section V exposing the color photosensitive material and correcting the luminous unevenness in this case. In the exposure section V, the system that a fiber optical tube type CRT(FOT) whose scanning face is brought into close contact with the color print paper while scanning the primary color in response to a color picture signal is used and the color print paper is exposed is adopted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Summary) The present invention relates to a color image recording device for obtaining a color hard copy from a color still image signal.

(Prior Art) Various color printers have been proposed for producing hard copies of color reproduced still images obtained from television receivers, video tape recorders, video disk players, etc., but all of them are expensive and have poor image quality. It wasn't satisfying.

(Object of the Invention) An object of the present invention is to provide a color image recording device that can be realized at low cost and also has satisfactory image quality.

(Structure of the Invention) For this purpose, the color image recording device of the present invention includes means for sampling each color signal of the three primary colors of a static image to obtain pixel data, and A for converting the obtained pixel data into a digital signal.
/D conversion means, memory means for storing the A/D converted pixel data, means for reading out the stored data twice to obtain recording pixel data twice the sampling data, and the recording pixel. means for γ-correcting the data;
D/A converts corrected pixel data into analog data
a converting means; an FOT for exposing the color photosensitive material to three primary colors using pixel data from the D/A converting means;
It is composed of a horizontal deflection circuit for horizontally sweeping the electron beam of T, a vertical deflection means for vertically sweeping the electron beam, and a light quantity unevenness correction means for adding a light quantity unevenness correction signal to the output of the vertical deflection means. There is.

(Embodiment) FIG. 1 shows a schematic configuration of a video signal processing section of a color image recording apparatus using a photosensitive material. This video signal processing section includes a signal input section I that inputs RGB signals for color images of the NTSC system and samples pixel signals of each RGB color, and an A/D conversion section H1 that converts the sampled signals into digital signals. A digital signal processing section (■) that fills in the line spacing to make it less noticeable and performs gamma correction to match the sensitivity of the photosensitive material, a D/A conversion section (■) that converts digital signals into analog signals, and a color photosensitive material. It is composed of an exposure section V that performs exposure and corrects unevenness in the amount of light at that time.

■ Exposure method In the exposure section ■, color photographic paper (for example, γ = 2°5) is used as the photosensitive material, and a fiber optics tube type CRT (hereinafter referred to as A method was adopted in which the color photographic paper was exposed to light by bringing the scanning surface of the paper (referred to as FOT) into close contact with the paper.

FIGS. 2 and 3 are for explaining the exposure part. FOTI has red phosphors (e.g. P22-, RE3) 2 and white phosphors (e.g. , P4) 3, and the phosphor 2.3
An optical fiber group 4 is placed in front of the optical fiber group 4, and three types of color filters 5rC (red) and 5g are placed in front of the fiber group 4.
(green) and 5b (blue) are arranged side by side. White phosphor 3 is used for the green and blue color filters 5g and 5b, and this is not used for the red color filter 5r, but a different red phosphor 2 is used. ,
This is suitable when the red sensitivity characteristic of the color photographic paper 6 used is in a long wavelength range and it is difficult to obtain cyan density.

The color photographic paper 6 is exposed to primary colors while being conveyed in the direction of the arrow in close contact with the color filters 5r, 5g, and 5b.

r, g, and b in FIG. 3 are the recording scanning lines on the front side of this FOTI, and the pitch of the recording scanning lines r and g is lrg.
, the pitch of recording scanning lines g and b is 1 gb.

(2) Method for correcting light intensity unevenness In this FOTI, fine light intensity unevenness occurs due to uneven coating of the phosphor 2.3 or variations in optical loss of the fiber 4. If there is unevenness in the amount of light along the same recording scanning line, vertical streaks will appear along the conveyance direction of the color photographic paper, and the image quality will be significantly degraded.

Therefore, as a countermeasure against this unevenness in light intensity, conventional methods have been to use a multiple exposure method to average the light intensity and erase it, or to measure the light intensity for each pixel in the recording scanning line direction and to correct it by multiplying the input signal by its reciprocal. A method is proposed.

However, the former method is difficult to incorporate signal processing such as scanning line interpolation to fill in between recording scanning lines, which will be described later, and the latter requires accurate light intensity measurement, and if the recording scanning position shifts for some reason, the correction data will become invalid. There is a drawback that it becomes.

Therefore, in the present invention, paying attention to the fact that fine light intensity unevenness occurs randomly on the FOT tube surface, it was decided to slightly move the horizontal recording scanning position in the vertical direction for each -horizontal scan. As a result, unevenness in the amount of light appears randomly on the color photographic paper, so it is possible to eliminate vertical streaks that appear in the conveyance direction of the color photographic paper.

However, if you simply adopt this method and move the horizontal recording scanning position randomly in the vertical direction, the synchronization with the conveyance of the color photographic paper will be lost, and the same line will not be able to be exposed accurately for RGB, resulting in poor image quality. to degrade. Therefore, the problem can be solved by keeping the conveyance speed of the color photographic paper 6 constant and adjusting the vertical deflection amount and the recording timing.

FIG. 4 is a diagram showing the timing. When the recording scanning line position is moved in the opposite direction to the conveying direction of the color photographic paper for each horizontal scan, the interval D+ between the scanning lines recorded on the color photographic paper is D+ = S+ +32
...+11. Here, SI is the transport pitch of the color photographic paper per -horizontal scan, and S2 is the displacement amount of the recording scanning line in the vertical direction (y1 feeding direction). Conversely, when moving the recording scanning line position in the same direction as the conveyance direction of color photographic paper, the movement is performed every horizontal scan in the same way as above, but the exposure is paused every other horizontal scan, and the recording Try not to let it happen. Therefore, the interval D2 between recording scanning lines at this time is D2 = 2 (SI 32) ・
...(2) becomes. In order to prevent uneven conveyance, that is, to expose the same recording scanning line in each RGB color, D+ = D2 = D (
3), and the condition is that SI = 3
32...(4).

For example, if 51=87 μm, then 52=29 μm.

0 pixel data sampling method Figure 5 (al is the still image played on the TV screen 7,
Further, FIG. 5(b) schematically shows the state in which the still image is printed on the color photographic paper 6 by the above-mentioned FOTI. The horizontal scanning period of an NTSC television signal is 63.5 μs, and each scan line has 640
If you try to sample pixels in the normal way, A/
A total of three D converters (3) with a conversion speed of about 12 MH2 are required for R and GSB. Furthermore, even if the conversion is performed at this speed, the exposure section (2) requires at least 10 seconds of recording time, so the signal processing section (2) requires a memory buffer.

Therefore, in the present invention, as shown in FIG. 6, only one pixel for each color of RGB is sampled per horizontal scanning line of the television screen. That is, as shown in FIG. 5 (al), 490 pixels each for BGR are sampled in the vertical direction per reproduction image formation time of one frame (consisting of odd and even fields), and these are sampled for RGB in the exposure system. One recording scanning line for each color.In other words, images from the left vertical part of the TV screen to the right side are sequentially exposed and recorded on photographic paper using FOT.In this way, the TV horizontal scanning period is 63 It is only necessary to A/D convert one pixel for each color in .5 μs, and the A/D converter ■
For example, a low-speed converter 11161 having a conversion speed of about 20 μs will suffice.

As shown in Fig. 3, the relative sampling position of each color is the interval between recording scanning lines r and g of FOTI is lrg, and the interval between recording scanning lines g and b is ggb, so the scanning line corresponding to that interval is Sample points separated in time by minutes. Tr, Tg, and Tb in FIG. 6 indicate sampling times of each RGB signal.

From the above, the relative sampling time difference (Tb-
The relationship between (Tg, Tg - Tr) and the RGB recording scanning line interval 1 gb, lrg on the FOTI tube surface is (Tb - Tg)/ΔT = 1 gb/D (5
)(Tg-Tr)/ΔT-1rg/D-(
61 Here, ΔT is the sampling period of pixels of the same color signal in the horizontal scanning line direction of the television screen, and D is the interval between adjacent recording scanning lines. 1/D is the recording density. Formula (5)
, (6), the image data of each color will overlap and no color shift will occur.

■Scanning line interpolation method The pixel data obtained by sampling as described above is
For each color of RGB, there are 640 pixels in the horizontal direction and 490 pixels in the vertical direction of the TV screen, but if this was copied directly onto color photographic paper, the recording scanning line structure would be noticeable, and the pixels in the direction along the recording scanning line would be Since the intervals also become wider, it is necessary to interpolate them.

In the present invention, a method is adopted in which the pixel data of each RGB color obtained by sampling once is used twice in succession for exposure, resulting in 1280 pixels in the horizontal direction and 980 pixels in the vertical direction, which are doubled. .

Therefore, in this case, the relationship between the above-mentioned relative sampling time difference and each scanning line interval on the FOTI tube surface is (Tb-Tg)/ΔT = l gb/2D
...(5)'(Tg-Tr)/ΔT = 1 rg/
2 D ・(a)'. For example, if the recording scanning line interval is l rg = l gb = 3 + n, then 1/
In the case of D=8.6 pixels/wm, the resolution between recording scanning lines is 131i! ! Become the element. Formula (5)',
If the relationship +6)' is satisfied, color misregistration will not occur for the same reason as described above.

■γ correction method Human signal characteristics, FOTI light emission characteristics, color photographic paper 6
This is a method of converting the gradation of an input signal in consideration of the sensitivity characteristics of the input signal, etc., and is performed on sampled data of each RGB color. The present invention employs a table lookup method in which characteristic data as shown in FIG. 7 is written in memory in advance and corrected output data is obtained by input data specifying the memory address. .

(2) Overall configuration of video signal processing unit FIG. 8 shows a circuit block diagram of the video signal processing unit of the color image recording apparatus, including the portions described above.

10r, 10g, LOb are NTSC TV images R
Terminals 11r, l1g, and llb are for inputting the GB signals, and amplifier circuits with high-speed response characteristics that amplify the RGB signals separately. 12r, 12g, and 12b are for sampling the input signal using the sampling pulse input from the terminal 13, and outputting the signal. This is a sample and hold circuit that continues to hold until the next sampling. Each of these sample and hold circuits is
It consists of an analog switch connected in series to the signal line and turned on and off by sampling pulses, and a holding capacitor connected in parallel to the output side of the analog switch.

Reference numeral 14 denotes an A/D converter, which sequentially and separately converts the RGB sample signals from the previous stage circuit into 8-bit digital signals in response to a 2-bit RGB selection signal inputted to a terminal 15. This conversion starts with a conversion start signal 5TAR at terminal 16.
This is done every time T is input. A terminal 17 outputs a signal EOC indicating that the conversion has been completed.

Reference numerals 181 and 182 indicate negative and second data selectors that distribute input data when transferring it to the negative and second line memories 19+ and 192 on the output side. The data selectors 18+ and 182 transfer the input signal to the output side by receiving the signal "L" at the output control terminal OC. is received as is, and the other selector 181 is inverted so that it is alternatively selected and the human data is transferred to the output side. Note that when data is not transferred to the output, the output side becomes high impedance, and backflow of data from the line memory side is prevented.

Line memory 19! and 192 output the signal r to the write terminal W.
It becomes a write state by receiving LJ, and the terminal W
receives rHJ, and further output enable terminal OE
It enters the read state by receiving the signal rLJ.

The terminal W of the first line memory 191 receives the selection signal DS of the terminal 22 and the write signal W of the terminal 23 via the Nant gate 21+, and the second line memory 191
The terminal W inputs a signal obtained by inverting the selection signal DS of the terminal 22 by the inverter 20 and the write signal W of the terminal 23 via the Nant gate 212, so that both line memories can be set to either one depending on the logical value of the selection signal DS. When one is in a writing state, the other is not in a writing state. Also, regarding reading, when one is in the reading state, the other is not in the reading state.

A latch 24 latches the transfer data from the line memory 19+ or 192 by manually inputting a selection signal DS to its terminal WS. This latch is performed by a latch clock of, for example, 1.00 Kllz input to the terminal CK.

To summarize the above part, for example, the first data selector 1
When data is being transferred from 81, the data is written to the first line memory 19+, and at this time, the second data selector 18+ makes the output side high impedance, and the second line memory 192 is in the read state. The read data is transferred to the latch 24 at the next stage.

Here, sample and hold circuits 12r, 12g, 12b
The operation of the circuit from latch 24 to latch 24 will be explained with reference to the timing charts of FIGS. 9 and 10.

As shown in the timing chart of FIG. 9, during the IH (initial horizontal scanning period) of the odd field, R pixel data at the scanning point at the rising edge of the sampling pulse 5r is sampled, and subsequently, the R pixel data of the scanning point at the rising edge of the sampling pulse 5r is sampled. 0 pixel data at the scanning point at the rising time and 8 pixel data at the scanning point at the rising time of the sampling pulse sb are sequentially sampled and held.

The RGB pixel data signals held in this manner are converted into digital signals by the A/D converter 14 in the order of R pixel data, G pixel data, and B pixel data. This A/D converter 14 inputs a 2-bit RGB selection signal to a terminal 15 and performs conversion processing every time a conversion start signal 5TART arrives at a terminal 16. In this conversion start signal, Rii! when converting for the first time! i
The raw data element data signal is obtained by processing the sampling pulse S, while the conversion start signal for the next 0 pixel data and 8 pixel data is obtained by processing the conversion end signal EOC.

The above sampling and A/D conversion are performed for pixels at the same time point from the horizontal synchronizing pulse Hp for each RGB color from the first scanning line to the last scanning line of the odd field on the TV screen, and continue. The same process is performed for even fields. That is, while forming one frame, each of RGB in the vertical direction shown in FIG.
Pixel data along the lines of the book are obtained for 490 pixels each.

The next sampling and A/D conversion are shown in (b) in Figure 1O.
As shown in 1, during the formation of the next frame, a pixel that is shifted by one pixel (corresponding to the above-mentioned ΔT) along the horizontal scanning line of the television signal from the above pixel is similarly calculated. and obtain the RGB pixel data there. Thereafter, sampling is performed in the same manner to obtain 640 pixel data for each color of RGB per horizontal scanning line of the television screen.

The digital data for each line of RGB in the vertical direction shown in FIG. The data is stored in either the first line memory 191 or the second line memory 192.

Here, when the selection signal DS is rHJ, the first data selector 18I is selected, the first line memory 191 is not in the read state, the Nant gate 21+ is opened, and the second line memory 192 is in the read state. Next, Nantes Gate 212 closes the gate.

Therefore, in the first line memory 191, the terminal 23
Each time a write signal arrives, pixel data of each color of RGB is written. This writing is performed over one frame, and a total of 490 pixels of data are written for each color of the ROB in the vertical direction of the television screen (see FIG. 5(a)).

On the other hand, in the second line memory 192, pixel data previously written in the same manner as above is read out.
The readout is Ri! ! 1 pixel data is read out, and a total of 980 pixels are read out. Next, 0 pixel data is read twice in the same way for 980 pixels,
Next, 8 pixel data is read out twice in the same way for 980 pixels, and transferred to the latch 24. As a result, the pixel data along one recording scanning line for each of RGB is 9.
It becomes 80iihi element.

The reading of this RGB pixel data is completed during sampling and A/D conversion for one frame,
Exactly the same readout is performed in the time corresponding to the next frame. Therefore, although the sampling rate was 640 per horizontal scanning line of the television screen, pixel data for 1280 recording scanning lines, which is twice that, can be obtained. As a result, adjacent recording scanning lines are exposed with the same pixel data, filling the spaces between the recording scanning lines and preventing the scanning lines from standing out.

Since the selection signal DS is inverted once every two frames (see FIG. 10 (gl)), the data selectors 1B+ and 18
2. Line memories 19 and 192 are switched every two frames, and the line memories 'J191 and 19
2, pixel data is written alternately, and the written pixel data is read out alternately (Fig. 10 (C1, (
(see di).

Reference numeral 25 denotes a T correction circuit, which is constituted by a ROM that stores correction characteristic data as shown in, for example, No. 7 and No. 1. For data reading, 8-bit pixel data from the latch 24 is input as an address signal, and pixel data corrected from the input data is sent out from the output. Note that the pixel data to be output is 10 bits so that more fine-grained gradation can be expressed. In this γ correction circuit 25, each characteristic for R, G, and B is selected by a 2-bit RGB selection signal applied to a terminal 26. Note that a mask signal for making the output pixel data zero luminance data is also applied to this terminal 26 at a specific timing, which will be described later.

27 is a buffer, 28 is a D/A converter that converts digital pixel data into an analog signal, 29 is an amplifier circuit, and 30 is a driver that converts the pixel data signal to a level that can drive the FOTl. 31 is a horizontal deflection circuit that outputs a horizontal sweep signal for FOTl, and the line memory 191
．． 192, the 10th
32 is a vertical deflection circuit that outputs a vertical sweep signal, and outputs a signal (see FIG. 1θ (fl)) that determines the horizontal sweep position for RGB.

This vertical deflection circuit 32 receives an R recording scanning line reference position signal V
r, the G recording scanning line reference position signal Vg, and the B recording scanning line reference position signal vb by analog switches 33r, 33g, 3.
3b is selectively output manually. 34 is a terminal for inputting a 2-bit RGB selection signal for making the selection; 35
is a logic circuit that generates a selection timing signal. The analog switches are switched in the order of 33r, 33g, and 33b to output the reference position signals in the order of Vr, Vg, and Vb in synchronization with the horizontal sweep.

Reference numeral 36 denotes a memory such as a ROM that stores recording scanning line position movement amount data for eliminating vertical streaks due to uneven light intensity on the front surface of the FOTI. From this memory 36, each frame of the human video signal, that is, the R
After each scan of GB is completed, new data is read out and D/.

The signal is converted into an analog signal by the A converter 37 and applied to the vertical deflection circuit 32 as a correction signal.

Therefore, each recording scanning line reference position signal Vr, V for RGB
By adding the above correction signal to g and vb, each RGB recording scanning line position becomes a position moved from the reference position (rgb in Fig. 3), and this position changes as explained in Fig. 4. , the light amount correction as explained in FIG. 4 is performed.

When moving the recording scanning line in the opposite direction to the conveying force direction of the color photographic paper, the data of movement QS2 is
It increases as 2.2S2.3S2...100S2..., and then when moving in the same direction as the conveyance direction...10032...3S2.2S2, Sl decreases. Make it. Therefore, data such as S, 2S2, 3S2, . . . 100S2, etc. are stored in the memory 36 and are read out in order.・When exposing one sheet of color photographic paper, read out 4 to 10 times back and forth.

When moving the recording scanning line in the same direction as the conveyance direction of the color photographic paper, as explained in FIG. input the pause control signal to 1.
During frame formation time, pixel data with zero brightness is output to the output side of the γ correction circuit 25 regardless of the manual data.

Further, even during this pause, pixel data is read out in the line memories 191 and 192, but this pixel data is not used for recording. Therefore, the pixel data read out during the pause is read out again in succession so that the continuity of the image is not impaired. Therefore, in this case, if the selection signal DS is inverted when two frames are completed, it will be inverted next when the third frame is completed, and the next time it will be inverted when the second frame is completed.

By the way, when changing the recording scanning line position as described above, a difference occurs in the average amount of light at each scanning line position, and this time, instead of the vertical stripes along the conveyance direction of the color photographic paper, the horizontal stripes along the scanning line direction Since streaks may be noticeable, correction is required to keep this average light amount constant.

Therefore, the correction signal from the D/A converter 37 in FIG.
After adjusting again according to each color of B, analog switch 3
D/A converter 2 by 9 r, 39 g, 39 b
In synchronization with the transmission of the RGB signals from 8, the amplifier circuit 29 adds these RGB signals to perform brightness adjustment. Leher Seki:! ! Container 38", 38g, 38b are F
Since the brightness at the front of the OTI color filters 5r, 5g, and 5b is not necessarily the same, this difference is adjusted eight times in advance.

In addition, when exposing by FOTI, color photographic paper 6
At both ends along the transport direction, at least the distance between the R and B recording scanning lines of the FOTI (j! rg + l gb) (see Figure 3) cannot be exposed to the three primary colors of RGB. The image becomes discolored. Also, each RG
Complete data may not be obtained at the time of sampling on both sides of each recording scanning line of B. Therefore, in order to avoid exposing the four circumferential portions of the color photographic paper 6, when the pixel data of those portions are manually inputted in the γ correction circuit 25, a mask signal is inputted from the terminal 26 to prevent exposure of the four circumferential portions. Mask the data so that the four circumferential parts are not exposed.

Margin ■Overall configuration of signal system of recording device Figure 11 shows the entire path of video signals and control signals of the color internal image recording device in blocks.This device consists of a signal processing section X and a printer section Y. It consists of

The signal processing section X is the video signal processing section 51 described above.
(FIGS. 3 and 8), it is composed of a CPU 52 that controls the whole, a group of keys 53 for operation, a group of displays 54, and a buffer 55 that exchanges signals between each part. The printer unit Y also sends drive signals to the aforementioned FOTI, a paper feed motor 56 which is a synchronous motor for feeding color photographic paper, a transport motor 57 which is a pulse motor for general feeding of color photographic paper, and a motor. A drive circuit 58 for detecting color photographic paper, a non-contact type paper presence/absence sensor 59 such as an optical reflection type for detecting whether or not color photographic paper is in a supply magazine described later, and a paper presence/absence sensor 59 of a non-contact type such as an optical reflection type that detects whether color photographic paper has bitten into a paper feed roller described later. It is composed of a non-contact type paper feed sensor 60 that detects color photographic paper, a non-contact type paper ejection sensor 61 that detects whether or not color photographic paper is ejected, an amplifier group 62 and a buffer 63 that amplify the sensor signal. There is.

■Mechanical configuration of printer section FIG. 12 is a diagram showing a side view of the mechanism of the printer section Y.

71 is an outer case, 72 is a pedestal (rail), and this pedestal 7
A supply magazine 73, which can be freely moved as described above, can be placed on top of the magazine 2. This supply magazine 73 has an opening 74
A lid 75 for closing the is provided, and a spring 7 is provided inside.
A pusher 77 is provided which applies pressure to the loaded color photographic paper in response to the elastic force of 6. The color photographic paper 6 is loaded with its photosensitive surface facing downward (towards the opening 74). 78 is 2 when taking out the color photographic paper 6.
This is a sabaki board to prevent more than one sheet from appearing at the same time.

79 is a microswitch that detects the open state of the shutter 78. Further, reference numeral 98 denotes a presser roller that presses the color printing paper, and since the color printing paper is bent at this portion, it is possible to improve the sharpness and reduce the stroke of the suction cup, which will be described later.

Reference numeral 80 is a take-out device for taking out the color photographic paper 6;
Figure 3 shows its front view. Pins 82 are engaged with L-shaped guide holes 81a formed on both sides of the frame plate 81, and a suction cup mounting body 83 is attached between the pins 82 on both sides. The paper presence/absence sensor 59 described above is attached to the suction cup mounting body 83, and the two suction cups 8 are attached so that an upward elastic force is applied by the spring 84.
5 is attached. Further, the interior of the suction cup attachment body 85 communicates with a check valve 87 via a hose 86. 87a is a projection that opens the check valve 87 when pushed. This suction cup mounting body 83 is connected to the upright side 90a of the slide plate 90 via two arms 88 and 89 on both sides thereof. A roller 91 is provided on the slide plate 90, and is engaged with a guide elongated hole stb formed on the lower side of the frame plate 81. In addition, the frame board 81
A protrusion 81d with which a protrusion 87a of the check valve 87 comes into contact is provided on a rising side 81C at the tip. The paper feed motor 56 has a built-in deceleration mechanism and is fixed to the frame plate 81 via a pedestal 92, and a disk 93 is fixed to its output shaft 56a.
An arm 94 is pivotally supported on the outer periphery of this disc 93, and this arm 94 is pivotally supported on a pin 95 implanted in the slide plate 90.

In this take-out device 80, a slide plate 90 connected by an arm 94 reciprocates once in the direction of arrow C every time the paper feed motor 56 rotates and the disk 93 rotates once. Also, during this reciprocation, the suction cup mounting body 83 receives the movement of the slide plate 90 via the arms 88 and 89, so the guide hole 81a
It makes one reciprocation in the direction of arrow F, that is, in an L-shape, up and down and back and forth. When the suction cup 85 returns to the state shown in FIG. 12, that is, to the lowermost position, the check valve 85
The protrusion 87a of No. 7 comes into contact with the protrusion 81d, and the inside communicates with the atmosphere. The rotational position of the paper feed motor 56 at this time is defined as the home position.

Therefore, in this take-out device 80, when the suction 185 rises to the highest position, it abuts against the color photographic paper 6 from the open lower part 4 of the supply magazine 73 and is pushed up and deformed by the suction cup 85, causing the air inside the suction cup 85 to is discharged from the check valve 87, and the color photographic paper 6 is sucked under negative pressure. And that suck 1II85
When the color photographic paper 6 moves downward, the color photographic paper 6
The pieces are separated by 8 and only one piece is taken out. When the suction cup 85 descends to the lowest position, it moves forward, and the protrusion 87a of the check valve 87 comes into contact with the protrusion 81d, air enters the check valve 87 from the outside, and the negative pressure suction in the suction cup 85 is released. Then, the color photographic paper is peeled off from the suction Fi,85. In this way, one sheet of color photographic paper is fed each time the suction cup 85 moves back and forth.

Reference numeral 96 denotes a paper feed roller, which further feeds the color photographic paper 6 that has been sucked and taken out by the take-out device 80, and is rotated by the output of the conveyance motor 57 (not shown in FIG. 12). It looks like this.

A paper feed sensor 60 is provided at the exit of the paper feed roller 96, and detects whether or not color photographic paper has bitten into the paper feed roller 96. Reference numeral 97 is a guide plate that guides the single feeding of color photographic paper.

A FOTI is provided below this guide plate 97. Reference numeral 101 denotes a press plate for pressing the color photographic paper into close contact with the front surface 102 of the FOTI, and a spring 10
It is receiving an impact force of 3.

104 is a conveyance roller, which is used to accurately convey the color photographic paper on the front side of the FOTI, and is connected to a conveyance motor 57.
It is designed to rotate in response to the output of A paper discharge sensor 61 is provided below this conveyance roller 104.

110 is a dark box attached to the main body, and an opening 112 is closed with a lid 111. 1
13 is a microswitch that detects whether the lid 21 is open or not.

Reference numeral 120 denotes a receiving magazine, which is detachably stored in the dark box 110. This receiving magazine 12
0 is provided with a lid 122 for closing the opening 121 and a guide claw 123 for stacking the color photographic paper 6 carried through the opening 122. In addition, dark box 11
The recess 111a of the lid 111 of No. 0 is connected to the receiving magazine 120.
The lid 122 is engaged with the protrusion 122a of the lid 122, and both lids are opened and closed at the same time. Also, receiving magazine 1
20 has a structure that cannot be removed unless the lid 122 is closed. Naturally, when this lid 122 is closed, the illumination surface 110
The lid Ill is also closed.

The supply magazine 73 and the receiving magazine 120 have their M2
The structure is such that it cannot be removed from the outer case 71 unless S, 122 is closed. In addition, 1, especially regarding the receiving magazine 120, when the lid 122 is closed, the illuminating surface 110
If 11 is also closed, even if there is light that enters the illumination surface 110 when the receiving magazine 120 is removed with the lid closed, that light will not enter the inner part, and therefore there will be no unused material inside the supply magazine 73. Even if some photosensitive color photographic paper remains, the paper will not be exposed to light.

(2) Control operation for feeding photographic paper for exposure This color image recording apparatus performs exposure by controlling its operation according to a preset program by the CPU 52 shown in FIG. 11 and others. The control clock in this case is, for example, 600 Hz. Next, the exposure control operation will be explained with reference to the flowcharts from FIG. 14 onwards.

First, when the start key (operated each time the F8 light is activated) is pressed, the entire apparatus is set to the initial state by the initial setting routine shown in FIG. Step 131
It is determined whether the lids of the supply magazine 73 and the receiving magazine 120 are open at :tjl. This lid opening detection is performed by a microswitch 79.113. If the answer is no (hereinafter referred to as N. If yes, it is referred to as Y), the opening of the lids is checked again in step 132, and it is determined again in step 133 that if both lids are still not open, then In step 134, a warning (buzzer sounding, display lamp lighting, etc.) is issued to indicate that the lid has not been opened.

If the lid is open, set P mode to 1 in step 135.
and the E mode is set to 2 in step 136. , P mode-1 is an exposure start mode. E mode is a mode during exposure, and is expressed as follows using 5-bit logic.

E mode = l → ooooot 〃　　　　2　→　ooot.

〃 3 → 00011 E mode 4 → 00100 〃 5 → 00101 〃 8 → 01000 〃 16 → 10000 Then, in step 137, the paper feed motor 56 is turned on, the paper presence/absence sensor 59 is turned on, and then step 13
Step 8 resets all trouble counters (paper-free trouble counter and paper-dropping trouble counter) to zero. next,
In step 139, the process waits for the paper feed motor 56 to leave the home position (at the time when the suction cup 85 starts to move upward). Then, once you leave the home position mentioned above,
The process advances to the exposure operation routine shown in FIG.

In this routine, the current E mode is determined from step knob 141 to step 145 until it is determined.

As described above, since the current mode is E mode-2, the logic is rooloJ, so the result in step 142 is Y, and the photographic paper take-out routine FFBI is entered.

This routine is shown in FIG. 16, and in step 151, it is determined whether or not there is color photographic paper 6 in supply magazine 73 by paper presence/absence sensor 59 which is turned on. If N, the paper feed motor 56 is turned on again at the step knob 152.
It is determined whether or not the is at the home position, and if it is N, the routine returns to the routine of FIG. be judged. If it is N, that is, if it is the first time, the paper no trouble counter is set to l using the steering knob 154, and the process returns to step 139 of the routine in FIG. 14 to detect it again. If the judgment in step 153 is Y, the steering knob 155 turns the paper feed motor 56.
, turn off the paper presence/absence sensor 59, and proceed to step 15.
At step 6, a paper out alarm is issued to notify that the color photographic paper in the supply magazine 73 is running out.

That is, here, the presence or absence of color photographic paper is detected by the paper presence/absence sensor 59, but if there is no detection result, it may be a false detection, so the same detection is performed again and an alarm is generated if there is no detection result. let

If the determination in step 151 is Y, in step 157 the conveyance motor 57 is turned on and the paper feed roller 96 is turned on.
The conveyance roller 104 is rotated, the paper feed sensor 60 is turned on, and the used paper presence/absence sensor 59 is turned off. Then, in the next step 15)), the E mode is set to -4, and the process returns to the routine shown in FIG. 15, where the judgments are made sequentially from step 141.

Since the logic in E mode-4 is ro 0100J, the judgment of the step knob 143 becomes Y, and the process enters the photographic paper feeding routine FFFI shown in FIG. First, in step 161, it is determined whether or not the paper feed motor 56 has returned to the home position.
In this case, in step 162, it is determined whether or not the removed color photographic paper has bitten into the paper feed roller 96 based on the detection operation of the paper feed sensor 60. If the judgment in step 162 is N, the next step 1
At 63, whether or not that 'JpHfr is the second time is determined by +11. If it is the first judgment, the answer is N and the process goes to step 164.
In step 165, the paper dropout trouble counter is set to 1. In step 165, the E mode is set to 2. In step 166, the conveyance motor 57 is turned off and the paper feed roller 96 is stopped.
At step 67, the kill sensor 59 is turned on again and the paper feed sensor 6o is turned off.

Then, the process returns to the routine shown in FIG. 15 and repeats the operation of taking out the paper. Further, if the determination in step 163 is Y, both motors 56 and 57 are turned off in step 168, and
Turn off the paper feed sensor 60.

Then, in the next step 169, a paper dropout alarm is issued.

That is, if the color photographic paper does not bite into the paper feed roller 96, the paper feed sensor 60 detects the color photographic paper up to two times in the same way as when taking out the color photographic paper described above, and the sensor 6o still detects the color photographic paper. If not, suck 185
It is determined that the color photographic paper taken out from the supply magazine 73 has fallen off midway through, and a warning is issued.

When it is determined by the operation of the paper feed sensor 60 that the color photographic paper has bitten into the paper feed roller 96, step 16 is performed.
2 becomes Y, proceeds to suasub 170, and feeds the paper feed motor 5G.
is turned off to stop taking out the photographic paper, and the paper feed sensor 60 is also turned off.
is turned off, and the paper discharge sensor 61 near the FOT 1 is turned on. Then, in step 171, as E mode-1,
Return to the routine of FIG. 15.

Since E mode-1 is logically roooolJ,
Step 141 becomes Y, and the conveyance/transfer of photographic paper in FIG.
The exposure routine FFF2 is entered. First, since it is N in step 181, the process proceeds to the next step 182, and here also N.
Therefore, the process advances to the next step 183. Then, the photographic paper conveyed by the paper feed roller 96 bites into the lower conveyance roller 104 until it is detected by the paper discharge sensor 61.
The same steps in this routine FFF2 and the routine shown in FIG. 15 are executed sequentially.

When the discharge sensor 61 detects the paper, the result in step 183 becomes Y, so the E mode-5 is set in step 184, and the time counter is set to T3 using the steering knob 185.

This T3 is a distance L3 [(
(see FIG. 12) is the time required to further feed the photographic paper. This is because when the leading edge of the photographic paper bites into the conveyance roller 104, the end has not come off the paper feed roller 96, so the end can be moved away from the paper feed roller 96 after being fed.

Returning to the routine shown in Figure 15 again, this time E mode-5
Since the logic is roololJ, step 141 becomes Y as above, and the photographic paper transport/exposure routine FFF
Enter 2 again. Since step 181 is N1 and step 182 is Y, the time counter set in T3 is decremented by 1 in step 186. and step 186'
The same steps of this routine and the routine of FIG. 15 are executed in sequence until the content of the counter is determined to be zero.

When time T3 has elapsed and the time counter becomes zero, step 186' becomes Y, and step 187 turns off the paper discharge sensor 61, and also turns off the conveyance motor 57 to stop the rotation of the conveyance roller 104.

At this time, the leading edge of the photographic paper is from the paper discharge sensor 61 to L3.
The end of the sheet has moved away from the paper feed roller 96. Next, in step 188, the process waits for about 0.2 seconds, and then in step 189, the conveyance motor 57 is reversed, the conveyance roller 104 is reversed, and the ink pad paper stuck there is reversed. Next, in step 190, the E mode is set to -8, and in the next step 191, the time counter is set to T I + T3. TI is a time corresponding to the distance Ll (see FIG. 12) required for the leading edge of the photographic paper to move back to the limit without coming off the biting portion of the conveyance roller 104.

Returning again to the routine of FIG. 15, this time the logic of E mode-8 is roloooJ, so step 144 becomes Y, and the photographic paper reversal routine FFB2 of FIG. 19 is entered. Here, the time counter set in step 201 is decremented by 1, and the process proceeds to step 202, where this routine and the same steps of the routine shown in FIG. 15 are sequentially repeated until the time counter reaches zero. Then, when the time Tl+T3 has elapsed, step 202 becomes Y, and therefore, in step 203, the transport motor 57 is turned off to stop the transport under CPU control.

In the next step 204, an exposure start signal is sent from the CPU 52 to the video signal processing section 51 to start exposure. The conveyance of the photographic paper during this exposure is performed by controlling and rotating the conveyance motor 57 in accordance with a signal synchronized with the exposure scanning signal in the video signal processing section 51. Then, in step 205, the E mode-16 is set, and when the exposure is confirmed in step 206, a message indicating that exposure is in progress is displayed in step 207, and the process returns to the routine of FIG. 15.

In this routine of FIG. 15, since the E mode is -16 this time, the logic is rl O000J, and step 1
45 becomes Y. Therefore, the photographic paper exposure end routine shown in FIG. 20 is entered. The steps between step 211 and the routine of FIG. 15 are performed in sequence until the exposure is completed. When the exposure is completed, the exposure display is turned off in step 212, and the discharge sensor 61 is turned on to enable detection. Next, in step 213, the conveyance motor 57 is turned on again for CPU control. Then, in step 214, the E mode-3 is set, and then the time counter is set to T2. This time T2 is the time until the photographic paper leaves the conveyance roller 104.

When the program returns to the routine shown in FIG. 15, the logic is "00011J" and step 141 becomes "Y" because the mode is E mode-3.

Therefore, the photographic paper conveyance/exposure routine FFF2 in FIG.
to go into. Then, since step 181 becomes Y, the time counter set to T2 in step 192 is decremented by 1, the process proceeds to the next step 193, and the same steps as in the routine of FIG. 15 are sequentially repeated. When time T2 has elapsed, the time counter becomes zero, and step 193
is Y, so in step 194 the conveyance motor 57 is turned off and the conveyance rollers are stopped. Then, in the next step 195, it is determined whether or not the ejection of the photographic paper has been completed by the detection operation of the paper ejection sensor 61. If YES, step 196
The completion of paper ejection is notified by a short buzzer sound, etc.

If the paper discharge sensor 61 does not detect the completion of paper discharge, that is, if it continues to detect photographic paper, the paper discharge sensor 61 is turned off in step 197, and in the next step 198, a paper discharge trouble is alerted.

As described above, in this control, photographic paper is taken out, fed, transported, exposed, and discharged, but when taking out, the presence or absence of paper is detected, and if there is no paper, it is checked twice. Also, suction cup 85
After removing the paper from the printer, the paper is checked up to twice to see if it has fallen out of the suction cup. Therefore,
It is possible to effectively deal with troubles related to photographic paper feeding. Furthermore, when the leading edge of the photographic paper is biting into the conveying roller 104, the end is still biting into the paper feed roller 96, so that the conveyance is accurate, and the exposure is performed without removing the end from the paper feeding roller. Since it is done in the state,
The occurrence of deviations in exposure and conveyance can be effectively prevented.

(Effects of the Invention) As described above, according to the present invention, since FOT is used, a color image recording device can be realized at low cost, and sampled pixel data can be used twice during recording for exposure. Therefore, it is possible to achieve satisfactory image quality after exposure, development and fixing.

[Brief explanation of drawings]

Figure 1 is a schematic block diagram of the video signal processing section, Figure 2 is an explanatory diagram of the FOT structure, Figure 3 is an explanatory diagram of the front side of the FOT, Figure 4 is a scanning line interpolation characteristic diagram, and Figure 5 is a sampling and The relationship between exposure is ignored, +
al is a schematic diagram of a TV screen, (b) is a schematic diagram of photographic paper and FOT, Figure 6 is a diagram explaining the sampling timing of RGB signals, Figure 7 is a T correction characteristic diagram, and Figure 8 is a video signal processing section. 9 and 10 are timing charts, FIG. 11 is a block diagram showing the signal path of the color image recording device, FIG. 12 is a side view of the printer mechanism, and FIG. FIGS. 14 to 20 are flowcharts for controlling the printer unit. (Explanation of symbols) ■...FOT, 2.3...fluorescent material, 4...optical fiber, 5rs sg, 5b...color filter, 6...color photographic paper, 7... TV screen, 10
r, 10g510b=...terminal, llr, t t g. 1 l b ... amplifier circuit, 12r, 12g, 12b
”-Sampling hold circuit, 13...terminal, 14
...A/D converter, 15-17 terminals, 181.182
...Data selector, 19+, 192...Line memory, 20...Inverter, 211.212...Nant gate, 23...Terminal, 24...Latch, 25
... T correction circuit, 26 ... terminal, 27 ... buffer, 28 ... D/A converter, 29 ... amplifier circuit, 3
0... Driver, 31... Horizontal deflection circuit, 32...
・Vertical deflection circuit, 33r, 33g, 33b...Analog switch, 34...Terminal, 35...Logic circuit, 3
6...Memory, 37...D/A converter, 38r, 3
8g, 38b...Rehel adjuster, 39r, 39g
, 39b... Analog switch, 51... Video signal processing unit, 52... CPU, 53... Key group, 54
... Display group, 55 ... Buffer, 56 ... Paper feed motor (synchronous motor), 57 ... Conveyance motor (pulse motor), 58 ... Driver, 59 ... Paper presence sensor, 60... Paper feed sensor, 61... Paper discharge sensor, 6
2... Amplifier group, 63... Buffer, 71... Outer case, 72... Frame (rail), 73... Supply magazine, 74... Opening, 75... Lid, 76... ...Spring, 77...Oshizaka, 78...Sabaki board, 79.
...Micro switch, 80...Ejecting device, 81...
・Frame plate, 82... Pin, 83... Suction cup mounting body, 84
...Spring, 85...Sucker, 86...Hose, 87...Check valve, 88.89...Arm, 90.
...Slide plate, 91...Roller, 92...Mountain frame,
93...disc, 94...arm, 95...bin,
96...Conveyance roller,...97...Guide plate, 9
8... Presser roller, i o t... Push plate, 102, FOT forward, 1
03... Spring, 104... Conveyance roller, it
o...Illuminating surface, 111...Lid, 112...Opening, 1
13... Micro switch, 120... Receiving magazine, 121... Opening, 122... Lid, 123...
guide claw.

Claims (1)

[Claims] (1) In a color image recording device that exposes a color photosensitive material using a color still image signal, means for sampling each color signal of the three primary colors of a still image to obtain pixel data, and converting the obtained pixel data into a digital signal. A/D
a conversion means, a memory means for storing the A/D converted pixel data, a means for reading out the stored data twice to obtain recording pixel data twice the sampling data, and a memory means for storing the A/D converted pixel data; γ-correction means, D/A conversion means for converting the γ-corrected pixel data into analog data, an FOT for exposing the color photosensitive material to three primary colors using the pixel data from the D/A conversion means, and the FOT. The present invention is characterized by being comprised of a horizontal deflection circuit for horizontally sweeping the electron beam, a vertical deflection means for vertically sweeping the electron beam, and a light quantity unevenness correction means for adding a light quantity unevenness correction signal to the output of the vertical deflection means. Color image recording device.