JPS6395780A - Color image recording method - Google Patents

Abstract

PURPOSE:To suitably prevent a color smear by reducing equally raster data to the length to subtract a constant value from one regular line length, adding discretely a correcting dot, returning it to a raster data length before reducing, and increasing and decreasing the correcting dot in accordance with the width size changing information of a recording paper and recording it. CONSTITUTION:At a process to convert original recording information to raster data, the raster data are equally reduced to the length to subtract a constant value, for example, the maximum estimation reducing value of a recording paper reduced by drying during the recording, from one regular line length. Thereafter, by adding the correcting dot discretely to the reducing raster data, for example, for a unit data block of several-several tens of bits each to constitute the raster data, for example, at the rate of one-several bits, the raster data length before reducing is returned. Based on the raster data obtained like this, in accordance with the width size changing information of the recording paper during the recording, the correcting dot is increased and decreased and the recording is executed.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention generates raster data based on original recording information, receives this raster data, and records it on recording paper with a line recording head. The present invention relates to a color image recording method in which images of different colors are superimposed and recorded on the same recording paper surface while relatively moving a paper and a line recording head in a direction perpendicular to the line recording direction.

[Conventional technology]

Using recording techniques such as thermal melt transfer, electrophotographic recording using photosensitive paper, and electrostatic recording, images of different colors are superimposed and recorded on the same recording paper surface, such as a roll of recording paper. Color image recording methods are known. In such color image recording, it is important that no positional shift occurs in each color image, and various improvements have been made to prevent color shift due to positional shift.

For example, U.S. Pat. No. 4,007,489 describes a technology that reads marks provided on recording paper, detects the same position in the width of the recording paper, and controls the writing timing of the recording head to align images of each color. has been done. Also, US Pat. No. 4,485,982 and US Pat. No. 45
No. 69584 describes a technique for controlling the recording position of an image by reading a tracking index on recording paper.

FIG. 6 is a diagram showing the technical content described in US Pat. No. 4,485,982. In FIG. 6, 1 is a roll of recording paper, 2 is a supply roller, 3 is a supply motor,
4a, 4b and 5a, 5b are tracking indicators in the X and Y directions formed on both sides of the recording paper, 6a, 6b and 7a, 7b are reading sensors for each of the tracking indicators, 8
is the low resolution encoder, 9 is the recording paper edge sensor, 1
0 is a pulse motor, 11 is a screw, and 12 is a paper feed roller. Further, 13, 14, and 15 are image recording processing stations such as a recording head and a developing head, 16 is a winding roller, 17 is a winding motor, and 18 is a pressure roller.

Tracking indicators 4a, 4b and 5a, 5b are formed prior to image formation of each color, and these tracking indicators 4a, 4b and 5a, 5b are detected by sensor 6a.

6b, 7a, and 7b to detect the position of the recording paper 1 in the x and y directions, and the image forming position of each color is controlled by controlling the recording head based on the detection signal. In this case, the signals read by the sensors 6a and 6b from the tracking indicators 4a and 4b are
It is used to control the recording position in the width direction, that is, the y direction.

Further, signals obtained by reading the tracking indicators 5a and 5b by the sensors 7a and 7b are used to control the recording position in the longitudinal direction of the recording paper 1, that is, in the X direction.

Note that a sensor 6 reads the tracking indicators 4a and 4b.
Although not shown, a and 6b are held integrally with the recording head, and are moved in the y direction of the recording head so that the magnitude of the detection signal of sensor 6a and the magnitude of the detection signal of sensor 6b are always equal. By servo-controlling the position, the center position in the width direction of the recording paper 1 and the center position of the recording head are always made to coincide with each other, and the positional deviation of each color image to be recorded in the y direction is prevented.

[Problem that the invention seeks to solve]

The above conventional technology has the following problems. That is, if the moisture absorption state of the recording paper 1 is always constant and no expansion or contraction occurs in the recording paper 1, even in the above-mentioned prior art, the alignment of images of each color is performed accurately and no color shift occurs. However, due to changes in environmental conditions, recording paper
When the moisture absorption state of the recording paper 1 changes, the recording paper 1 expands and contracts, causing a problem of color shift. In particular, color misregistration caused by expansion and contraction in the width direction is particularly noticeable because there is no means for correcting it.

FIGS. 7(a), 7(b), and 7(c) are diagrams showing the pattern of the occurrence of color shift. (a) of the figure shows an image formed on the left edge of the recording paper 1, (b) of the figure shows an image recorded at the center of the recording paper 1, and (c) of the figure shows an image formed on the left edge of the recording paper 1. The image recorded at the right end of the screen is shown. When the recording paper 1 in a moderately moisture-absorbing state is placed in a dry atmosphere, the recording paper 1 gradually shrinks. Therefore, in such an atmosphere, recording paper 1
C (cyan), M (magenta) while moving back and forth.
, Y (yellow), the images of C, M, and Y are recorded under different degrees of shrinkage in the width direction of the recording paper 1. As a result, as shown in FIGS. 7(a), (b), and (c), the first recorded 0-color image is formed on the innermost side of the paper, and the next recorded M-color image is formed on the outer side. The yellow image recorded last is formed on the outermost side of the paper.

In this way, color misregistration occurs due to contraction of the recording paper 1 in the width direction.

Generally, recording paper is humidity-controlled at the time of manufacture so that the relative humidity is balanced at 50 to 60%.

When such recording paper is placed in an environment with a relative humidity of 20 to 30%, it shrinks in the width direction by about 0.5% in 5 to 10 minutes. Therefore, in the case of an AO plate or a recording paper having a width of 36 inches, a shrinkage of 5 m11 will occur. Therefore, without correcting means for the shrinkage (1), normal color image recording cannot be expected.

In order to solve this problem, sensor 6 shown in FIG.
A and 6b are used to detect changes in the dimensions of the recording paper in the width direction, and based on the detected values, raster data received from a controller etc. is thinned out at regular intervals, thereby adjusting the dimensions in the width direction. ing. However, according to this recording method, since a portion of the raster data that is sent is thinned out, there is a risk that important image data located at the thinned out position may be lost. For example, when there is a straight line to be recorded along the feeding direction of the recording paper, there is a problem that the line disappears without being recorded.

Therefore, the present invention can accurately prevent color shift caused by dimensional changes in the width direction of the recording paper even for recording paper that is moistened with a relative humidity of 50 to 60%. It is an object of the present invention to provide a color image recording method in which there is no risk of image data being lost, and in addition, the image size can be maintained at a normal size when there is no change in size in the width direction of recording paper.

[Means for solving problems]

In order to solve the above-mentioned problems and achieve the object, the present invention takes the following measures. That is, raster data is generated based on original recording information, this raster data is received and recorded on recording paper by a line recording head, and the recording paper and line recording head are moved relative to each other in a direction orthogonal to the line recording direction. In the color image recording method, in which images of different colors are recorded and formed on the same recording paper surface while moving the image, in the process of converting the original recorded information into raster data, two raster data are converted into one regular line. It is reduced on average to a length obtained by subtracting a certain value, for example, the maximum estimated reduction value of the recording paper width that shrinks due to drying during recording, from the length. Then, correction dots are added discretely to the reduced raster data, for example, at a rate of 1 to several bits, to each unit data block of several to several tens of bits constituting the raster data. Return to the raster data length. Based on the raster data obtained in this manner, recording is performed while increasing or decreasing the correction dots in accordance with information on changes in the width dimension of the recording paper during recording.

[Effect]

By taking such measures, the following effects are achieved. Since there is relatively little change in the width of the recording paper during image recording of the first color gamut, the recording paper has a substantially regular width, and the recorded image also has the regular size. On top of this, the second. At the time of overlapping and forming the images of the third color,
When the width of the recording paper shrinks due to drying, for example, the size of the initially formed image becomes smaller. However, the subsequent second. Image recording for the third color is performed by removing correction dots based on information on changes in the width of the recording paper, and based on raster data whose length matches the image dimensions of the first color. Even if dimensional changes occur over time, color shift can be prevented from occurring. In this case, since the correction dots added in advance are removed, even if the -1- correction dots are removed, part of the true image will not be missing, and the image content will not be altered. do not have.

If the width of the recording paper expands due to moisture absorption during recording, the number of correction dots is increased in the opposite manner to the above, and color misregistration is similarly prevented.

In addition, in the process of converting the recording source information to raster data, the length of the raster data is uniformly reduced by a certain amount, and the raster data is returned to the standard size by adding correction dots to this. Since the correction dots are increased/decreased based on this base cluster data, which corresponds to changes in the width of the recording paper, the dimensions of the formed image will change depending on the expansion and contraction of the width of the recording paper. If no change occurs, the image size becomes the normal size. Therefore, although color shift correction is performed by increasing and decreasing the number of correction dots, changes in the image dimensions themselves can be suppressed to a minimum.

〔Example〕

FIG. 1 is a block diagram showing an example of an apparatus for carrying out the method of the present invention. In the figure, reference numeral 20 denotes original recorded information, which, as will be described later, is information created by a computer, such as CAD or computer graphics vector data, or document information itself, such as photographs and drawings. Reference numeral 21 denotes a reduced raster data generation unit, which converts the original recorded information 20 into raster data and at the same time changes the length of the raster data from the regular one line length to a certain value, for example, the maximum width of the recording paper that is reduced by drying during recording. Equally reduce the length by subtracting the estimated reduction value. Note that the signal array in the direction orthogonal to the recording line direction has a function of being transmitted in a normal dog's direction. 2
A receiving buffer 2 receives the reduced raster data.

23 is its write address circuit, and 24 is its read address circuit. Reference numeral 25 denotes a read buffer, which sequentially reads out the raster data received by the receiving buffer 22.

Reference numeral 26 denotes a bit string enlargement circuit, which processes the reduced raster data reduced by the reduced raster data generation section 21 discretely, for example, for each unit data block of several to several tens of bits constituting the Rask data. It has a function of returning to the normal raster data length before reduction by adding correction dots, ie, dummy bits, at a rate of one to several bits. Note that it is desirable that the dummy bit corresponds to the state of adjacent bits at the location where it is added in order to avoid image deterioration. In other words, it is a black and white binary record and rlJ
When the rOJ signal is used, if both the front and rear of the dummy bit are "1", the signal to be added is "1", and if both the front and rear of the dummy bit are "0", the signal to be added is "1".
0” is added. Also, the front and back are “1” and “0” or “0”
In a boundary region such as "1" or "1", a dummy bit that is the same as either the front bit or the rear bit is added, or a bit with a property intermediate between the two is added. As for the dummy bit insertion position, the specified insertion position may be shifted, for example, within the range of 50 to 200 bits for each data line so that the influence of the insertion is not noticeable.

27 is a bit string reduction circuit, and 28.2 will be explained next.
Based on the information on changes in the width dimension of the recording paper during recording, which is obtained by 9 or the like, the correction dots, ie, dummy bits, are removed as necessary to reduce the bit string.

The recording paper width data generating section 28 corresponds to a detection circuit that includes recording paper width direction position sensors 6a and 6b in FIG. It may also be a sensor that reads . Note that the recording paper width data generation unit 28 does not directly detect the dimensions of the recording paper, but rather prepares predicted values of dimensional changes for li and selectively inputs them. Good too.

The reduction controller 29 is for specifying the location where dummy bits are to be removed according to the information from the recording paper width data generation section 28. This is done by selecting.

Thus, when there is no reduction in recording paper width, no dummy bits are removed, when there is a slight reduction, a small number of dummy bits are removed, and when there is a large reduction, a large number of dummy bits are removed. In this way, as the recording paper width decreases, the number of dummy bits to be removed is increased to maximize the bit string expansion circuit 27.
It is now possible to remove up to the number of dummy bits inserted in .

Reference numeral 30 denotes an output buffer, which converts the raster data, whose bit string has been reduced in accordance with the reduction in the width of the recording paper, into serial-to-parallel data and sends it to the latch circuit 31. The latch circuit 31 sends parallel raster data to the head drive circuit 32. The head drive circuit 32 records the data on recording paper.

FIG. 2(a) is a diagram showing the configuration of the reduced raster data generation section 21 when the original recorded information 20 is a vector signal. In the figure, 41 is a vector signal generating section, which generates signals such as CAD and graphics generated by a computer. 42 is a part that converts the vector signal into raster data in the form of bit string information.

Each bit of this raster data displays information for a length corresponding to the pixel pitch when recorded on a hard copy, so once the number of bits is determined, the length of the recording line on the recorded image is determined. is decided. In this example,
When converting a vector signal into raster data, vector/raster conversion is performed so that the raster data is reduced to a specified length of one line on average. In other words, the reduction in this case is performed proportionally to each part of the original recorded information 20, and a method of extracting bits after raster conversion is inappropriate because the recorded information will partially disappear. be.

FIG. 2(b) is a diagram showing the configuration of the reduced raster data generation section 21 when the original recorded information 20 is an original image.

In the figure, 43 is an original image, and 44 is a reduced line scanner. When reading the original image 43, the reduction line scanner 44 decomposes and reduces the original image 43 with the projection magnification of the optical system of the scanner set to a value slightly smaller than 1 to obtain raster data.

In both cases of FIGS. 2(a) and 2(b), the raster data length is reduced, but the original recorded information 20 is converted as is with respect to the dimension of the signal array in the direction orthogonal to the recording line, and no reduction is performed. do not have.

FIG. 3 is a diagram showing a specific circuit configuration of the image enlarging section centering on the bit string enlarging circuit 26. In the figure, 51 is a latch circuit, 52 is a parallel-to-serial conversion circuit, 53 and 54 are shift registers, 55 and 56 are interlocking changeover switches, 57 is a flip-flop circuit (hereinafter abbreviated as FF circuit), 58 is a counter, 59.degree. 64 is an OR gate, 60 is a polarity inversion circuit, 61.degree. 63 is an AND gate, and 62 is an AND gate with a negative circuit.

Hereinafter, the operation of the circuit shown in FIG. 3 will be explained with reference to the operation timing diagram shown in FIG. 4 at appropriate times. Here, an example will be explained in which one line is divided into unit data blocks of 8 bits and processed.

When the write signal WR is applied at time t1 shown in FIG. 4, the image data FD read out from the reception buffer 22 shown in FIG. 1 is held in the latch circuit 51 by the write signal WR. At the same time, the FF circuit 57 is set by the write signal WR, and at the same time,
Counter 58 is cleared.

As a result of setting the FF circuit 57, the gate 61 is opened by the set output signal SO, and the clock signals SL and S4 are
is supplied. The shift operation of the shift register 53 is started by the clock signal S4.

On the other hand, as a result of the counter 58 being cleared, the counter 58
The Qmax output of becomes zero. Therefore, the gate 62 is opened and the clock signal S1 is supplied to the parallel-to-serial converter circuit 52 as the shift clock signal S2. Therefore, the parallel-to-serial conversion circuit 52 starts operating and starts converting the parallel raster data latched by the latch circuit 51 into serial raster data. The converted serial data is sequentially supplied to the shift register 53.

The clock signal S1 that has passed through the gate 61 is supplied to the counter 58. Therefore, the counter 58 starts counting operation. As a result, the number of bits serially transferred from the parallel-to-serial conversion circuit 52 to the shift register 53 is counted.

At time t2 shown in FIG. 4, when 8 pittros have been transferred, Qmax of the most significant bit of the counter 58
The output becomes "1". Therefore, the gate 62 is closed and the clock signal S2 is cut off, so that the parallel-to-direction converter circuit 52 stops while maintaining its state. However, at this point, the gate 63 is still closed, so the clock signal S3 is not sent out. Therefore, the FF circuit 57 remains set and the gate 61 remains open. Therefore, the clock signal S4 is further input to the shift register 53, and the serial input is continued. In other words, the last data of the parallel-to-serial conversion circuit 52 is transferred to the shift register 53.
will continue to be man-powered.

Dummy bits are added to the transferred data in this way, and the image data FD is enlarged.

In this embodiment, after the parallel-to-direct conversion circuit 52 stops,
Time t when the counter 58 counts the next clock signal S1
3, both the QA and Qmax outputs of the counter 58 become "1", so the gate 63 opens and the pulse signal S
3 is sent. Therefore, on the one hand, the FF circuit 57
is reset, and on the other hand, counter 58 is cleared.

When the FF circuit 57 is reset, the gate 61 closes,
Shift register 53. Counter 58. Clock signal S4. which was being supplied to gate 62. Sl is cut off. At the same time, the write enable signal WREN is outputted to the latch circuit 51 through the polarity inversion circuit 60, so that the write operation is completed and the next data is in a standby state.

In this way, one dummy bit is added to the 8 bits of the input image data FD, and the image data F
D is enlarged. By repeating the above operation a predetermined number of times, enlarged image data in which one bit is added to each 8-bit unit data block is obtained.

Note that a shift register 54 is arranged parallel to the shift register 53 via changeover switches 55 and 56. Therefore, by switching the changeover switches 55 and 56 at the same time, during the period when one shift register 53 is being written, the other shift register 53 is
4, and while a write operation is being performed on the other shift register 54, reading can be performed from one shift register 53. the result,
Not only can the bit string expansion operation be performed efficiently, but it can also be operated asynchronously with the image reduction circuit in the next stage.

FIG. 5 is a diagram showing a specific circuit configuration of the image reduction section centering on the bit string reduction circuit 27. 70 in Figure 5
3 shows a state where one of the shift registers 53 or 54 in the circuit of the image enlarger shown in FIG. 3 is electrically separated from the circuit of FIG. 3 and taken out. 71 and 72 are shift registers similar to the shift register 70 described above, and two of them are arranged in parallel for the same reason as in the case of FIG. 73 is a serial-parallel conversion circuit. 74.75 and 76°77
is an interlocking switch for switching between the two shift registers 71 and 72.

78 is a counter that outputs a pulse every 8 clocks, and 79 is a counter that outputs a pulse every 9 clocks. 80, when the preset value set in advance becomes zero,
It is a subtraction counter that sends out an output "1". 81 is the first
The bit string enlarging circuit 2
This is a decoder that forms data for determining how many blocks to remove correction dots, that is, dummy bits added to each 8-bit unit data block in 6, and corresponds to the reduction controller 29 in FIG. ing. The contents of this decoder 81 become preset data for the subtraction counter 80. 82 is an AND gate with a negative circuit, 8
3 is an AND gate, and 84.85 is an OR gate.

Next, the operation of the circuit configured as described above will be explained. 1
When the line start signal LINE-START is input manually, the counters 78 and 79 are reset and a preset command signal is given to the subtraction counter 80, so that the contents of the decoder 81 are preset to the counter 80.

Now, assuming that the amount of shrinkage of the recording paper is extremely large, the decoder 8
Data [1] is set to 1 in order to remove all dummy bits from all unit data blocks. If the amount of shrinkage of the recording paper is relatively small, 2, 3. ... to remove dummy bits for each block [2].

[3 pieces of data are set.]

When the transfer lock CLK is input, the shift register 70
data begins to be sequentially transferred to the shift register 71. At the same time, counters 78 and 79 start counting the number of clocks, that is, the number of transfers.

When the transfer of 8 bits is completed, the count value of the counter 78 becomes [8], so one pulse is output. When this pulse is manually applied to the subtraction counter 80, the preset [1] is subtracted from the subtraction counter 80, resulting in [0]. Then, the output "1" is sent from the counter 80 and the gate 82 is closed. Therefore, the clock signal that had been supplied to the shift register 71 is cut off, and the shift register 71 stops. However, since the clock signal continues to be supplied to the shift register 70, the shift register 70 further performs a shifting operation. As a result, the ninth dummy bit added earlier is not transferred to the shift register 71 and is discarded. In other words, dummy bits are removed. When the shift of the 9th bit is completed, the count value of the counter 79 becomes [9], so one pulse is output. Since this pulse is given as a clear signal to the counter 78 via the OR gate 84, the counter 78 is cleared.

Further, the pulse is applied to an AND gate 83 and an OR gate 8.
5 to the subtraction counter 80 as a reset command signal. Therefore, the subtraction counter 80 and the decoder 8
The setting data based on 1 is preset again. At this point, the naori counter 79 is in its initial state, that is, in its clear state. Then repeat the series of operations described above again. In this way, all the dummy bits added to each data block are removed, and one line of raster data is reduced to the length before adding the dummy bits.

Note that if the shrinkage of the recording paper is not so large and the value preset in the subtraction counter 80 is a large value of [2] or more, the content will not become zero even at the end of 8-bit transfer. In other words, its output remains "0". Therefore, in such a case, since the gate 82 remains open, the 9th bit is also transferred to the shift register 71. When this transfer is completed, the counters 78 and 79 are cleared and the subtraction counter 80 is re-preset as described above. The same operation is repeated below. When the contents of the subtraction counter 80 become zero, the dummy bits are removed in the same way as described above. Since the dummy bits are removed one by one for each frequency data block, the degree of raster data reduction in this case is relatively small.

The data stored in the shift register 71 is electrically disconnected from the circuit of FIG. 5 by the switching operation of the changeover switch group, and is reconverted into parallel data by the serial-parallel conversion circuit 73. It is sent to the next stage circuit.

Next, a case will be described in which the above-mentioned embodiment is applied to the conventional apparatus shown in FIG. When the rolled recording paper 1 is wound into a roll, the moisture content at the time of manufacture is
However, in the process of being unrolled and transferred to the recording section, the width dimension changes depending on the environmental humidity. This change in the width of the recording paper 1 is detected by the edge detector 9 or the tracking index sensor 5a.

6b. When detected by the edge detector 9, recording width control is performed from the time of recording the first color opening. In addition, in the case of detection by the tracking index sensors 6a and 6b, first the tracking index sensor 6a,
After the recording of 6b is performed, recording width control is performed from the next step.

Changes in the width of the recording paper 1 occur rapidly for several minutes after the recording paper 1 is unwound from the roll, and after 5 to 10 minutes have passed and become accustomed to the environment, the change becomes quite gradual. The humidity of the recording paper 1 is often adjusted at the time of manufacture to balance the relative humidity between 50 and 6096, but the relative humidity is between 20 and 30%.
When placed unrolled in an environment with a relative humidity of 0.
Shrinkage in the width direction of about 5% occurs. Therefore, the second color,
As the color is printed in line with the third color, printing is performed while increasing the correction amount of the printing width.

The correction amount is determined by directly detecting the edge of recording paper 1,
When tracking is performed by detecting the tracking indicators 4a and 4b, it is performed in real time. Tracking indicator 4a.

If 4b is only partially located, the dimensional information between the tracking indicators is supplemented by calculations. Furthermore, in the case where a mechanism for detecting the recording paper width is not provided, the present invention can be carried out by predetermining the same type of correction conditions and arranging to select them as appropriate and input them to the correction circuit. be.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, the bit string reduction circuit 27 is provided assuming that the recording paper shrinks due to drying during recording, but it is also possible to cope with the case where the width of the recording paper increases due to moisture absorption , a bit string expansion function similar to that of the bit string expansion circuit 26 may be added to the bit string reduction circuit 27. It goes without saying that various other modifications can be made without departing from the gist of the present invention.

〔Effect of the invention〕

According to the present invention, in the process of converting original recorded information into raster data, the raster data is averagely reduced to a length obtained by subtracting a certain value from the regular length of one line, and then the reduced raster data is recorded. By discretely adding correction dots to the data, it is returned to the raster data length before reduction, and based on the raster data obtained in this way,
Since recording is performed while increasing or decreasing the correction dots according to information on changes in the width dimension of the recording paper during recording,
5. Even for recording paper that has been conditioned to have a relative humidity of 0 to 60%, it can accurately prevent color shift caused by changes in the width of the recording paper, and also eliminate image data. It is possible to provide a color image recording method in which there is no fear and in addition, the image size can be maintained at a regular size when there is no change in size in the width direction of the recording paper.

[Brief explanation of the drawing]

Figures 1 to 5 are diagrams showing one embodiment of the present invention. Figure 1 is a block diagram showing an example of an apparatus for carrying out the method of the present invention, and Figures 2 (a) and (b) are original records. FIG. 3 is a diagram showing the configuration of the reduced raster data generation section when the information is a vector signal and an original image; FIG. This figure is a diagram showing the operation timing of FIG. 3, and FIG. 5 is a diagram showing a specific circuit configuration of the image reduction section centering on the bit string reduction circuit. Figure 6 is a diagram showing the technical content described in U.S. Patent No. 4,485,982, and Figures 7 (a) and (b).
)(C) is a diagram showing a pattern of occurrence of color misregistration, which is a drawback of the apparatus shown in FIG. 6. 20... Original recording information, 21... Reduced raster data generation section, 22... Reception buffer, 26... Bit string enlargement circuit, 27... Bit string reduction circuit, 28... Recording paper width data generation section , 29... Reduction controller. Applicant's Attorney Atsushi Tsuboi Figure 4 1! 1 - Office Attorney Kuro [11 Akira Jllll 1.1
; Indication of A/1 1) Relationship with the patent application No. 61-2/10779 2, title of the invention: color image recording method 3, encyclopedia f'1 named Nyama 1 ■- Patent applicant (037) A Rimbus Optical Industry Co., Ltd. 4, Agent: 3-7-2 Kasumigaseki, Higashiyobe Chiyo 11-ku IJB [- Building 100 Phone: 03 (502) 3181 (Main representative)
6. Full text of the items to be amended 7. Contents of the amendment

Claims (1)

[Claims] Raster data is generated based on original recording information, and this raster data is received and recorded on recording paper by a line recording head, and the recording paper and line recording head are moved orthogonally to the line recording direction. In a color image recording method that records and forms images of different colors on the same recording paper surface while moving them relative to each other in the direction of The raster data is averagely reduced to a length obtained by subtracting a certain value from the length of one line of A color image recording method characterized in that recording is performed while increasing or decreasing the correction dots based on information on changes in the width dimension of recording paper during recording.