JPH09234917A - Registration error correction mechanism of printing device - Google Patents

Abstract

(57) [PROBLEMS] To provide a misregistration correction mechanism of a printing apparatus capable of obtaining a high-quality printed screen even if misregistration occurs. SOLUTION: First, a video signal is printed by a printing device (S1), the registration deviation amount 1b of the printing screen 1a of the printed printing paper 1 is visually confirmed, and this registration deviation amount 1b is within an allowable range. If there is, the printing screen 1a of the printing paper 1 is obtained (S2). On the other hand, if the registration shift amount 1b is outside the allowable range, the printing device main body 10 or the variable device 12 of the remote controller 11 is operated to adjust the registration shift amount 1b (S2, S3). The adjustment amount of the variator 12 is replaced with an electric signal (S4), and is input to an input control microcomputer (not shown) (S5) to change the print start position setting of each color or the ink sheet tension adjustment / change of setting. (S6), the registration deviation amount 1b is corrected based on the variable amount of the variable device 12. As a result, it is possible to obtain the print screen 1a with no registration shift from the next print.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for transferring a plurality of color inks to form an image, and particularly to a registration misregistration misregistration (hereinafter referred to as a registration misregistration) which occurs when a plurality of color inks are transferred to a printing paper. ) Can be easily detected and corrected.

[0002]

2. Description of the Related Art Conventionally, images from a personal computer, a camera-integrated video tape recorder, an electronic still camera, etc. have been soft-copied by a display device or the like capable of displaying high resolution. However, in recent years, a color printing device (video printer device) has been developed which is capable of displaying an image as a video image of these information sources as a full-color, high-definition hard copy.

Generally, a printing device such as a small printer device for a computer, a video printer device, a copying machine, etc., sequentially prints (prints) characters or the like in the digit direction (or the opposite direction) according to its printing method. ) Serial printers, (2) line printers that perform print processing for each line of print data, and (3) page printers that perform print processing for each page of print data It can be roughly divided into three types. In addition, each is divided into impact type that prints by mechanical impact force and non-impact type that does not have a hitting sound that uses heat or static electricity, and is further classified into a method according to the printing mechanism and the printing color method. To be done.

As described above, the present invention is mainly concerned with misregistration in a desk-top type line printer (video printer device) which is a non-impact type printing device which does not generate a striking sound using heat or static electricity according to the classification. It relates to a correction mechanism.

The video printer device is a color in which dyes of three colors, for example, yellow (Y), magenta (M), and cyan (C) are cyclically applied in a predetermined order in accordance with a video signal of an information source. A printing ink sheet (hereinafter abbreviated as an ink sheet) is circulated, and the Samar head is heated to sublimate the dye in the ink sheet to perform one-screen color printing on the recording paper (thermal transfer recording paper). There is. Further, this video printer controls the time width of the current applied to the thermal head to adjust the amount of dye sublimated to perform gradation.

After recording by the above-mentioned method, the recording paper conveying mechanism of the printer device conveys the recorded recording paper, sends it out to the paper discharge case, and stores it. The recording phase of is completed.

A conventional heat-sensitive video printer device, which is one of the desk-top line printers, will be described below as an example. FIG. 6 is a view showing an example of a printing screen printed on printing paper, and FIG. 7 is a structural perspective view showing a conventional printing paper feeding mechanism.

As shown in FIG. 7, the printing paper feeding mechanism is
A paper guide 2 for conveying the printing paper 1 shown in FIG.
The paper guide roller 2a provided on the paper guide 2, the platen 5, the pinch roller 6 and the capstan 7 that sandwich the printing paper 1, and the ink sheet 3 for applying the dye of the ink sheet 3 onto the printing paper 1 A thermal head 4 for sublimating the dye, a supply side ink sheet bobbin 8 not shown for supplying the ink sheet 3, and a winding side ink sheet bobbin 9 for winding the ink sheet 3 supplied from the supply side ink sheet bobbin 8. , And a drive mechanism (not shown) for conveying the printing paper 1 and the ink sheet 3.

In the above-described structure, the printing paper 1 is conveyed while being guided by the paper guide 2 and the paper guide roller 2a, and is sandwiched between the thermal head 4 and the platen 5 together with the ink sheet 3 and in close contact with each other. Not carried by the drive mechanism. Paper feeding (conveyance method of the printing paper 1) is performed by friction conveyance with the platen 5, and a pinch roller 6 and a capstan 7 separately provided at adjacent positions.
There is also a conveyance method by sandwiching and feeding, but in any case, the conveyance is performed by the drive mechanism (not shown).

On the other hand, the ink sheet 3 is provided with a transport mechanism different from the drive mechanism. Band-shaped ink sheet 3
Is connected to the ink sheet bobbin (reel) at both ends of the winding start and the winding end, and the unused ink sheet 3 is stored in a state of being wound on the supply side ink sheet bobbin 8.

During printing, that is, when the ink sheet 3 and the image receiving side of the printing sheet 1 are sandwiched between the thermal head 4 and the platen 5, the printing sheet 1 and the ink sheet 3 are in close contact with each other. Due to the frictional force between the paper and the ink sheet generated when the thermal head 4 thermally heats the ink on the ink sheet 3, the (printing paper 1 and the ink sheet 3
The difference is suppressed.

However, the tension of the ink sheet 3 changes due to heat, humidity, bobbin winding position, and the like, which causes a relative positional deviation between the printing paper 1 and the ink sheet 3. The relative positional deviation between the printing paper 1 and the ink sheet 3 is enlarged every time several colors of ink are superposed and sublimated, and appears as a misregistration phenomenon in which images of respective colors are displaced.

When the printing position of each color is slightly shifted,
A color misregistration appears in the paper feeding direction of the printing screen 1a, which is an area in which an image on the printing paper in FIG. 6 is printed. For example,
When the order of the transfer inks on the ink sheet 3 is yellow (Y), magenta (M) = red, cyan (C) = blue, and the print position of each color is displaced in the paper feed direction, the print start portion is As shown in FIG. 6, Y, M, and C shift and overlap while advancing. Therefore, the misregistration color of the leading portion is C, and conversely, the tail end of the printing shifts in the order of the colors Y, M, and C, leaving a non-overlapping portion, and the misregistration color at the end is Y.

Conventionally, in order to reduce such misregistration, the ink sheet 3 is set at a position from the beginning of winding of the take-up side ink sheet bobbin 9 to an intermediate winding position and at a standard room temperature state, and under this condition, The tension of the ink sheet 3 is set (adjusted) so that the misregistration is not noticeable. That is, heat, humidity, bobbin winding position, and the like, which are the factors (conditions) for causing the registration deviation, are averaged for the fluctuations (changes), and in this state, the registration error of the ink sheet 3 is made to be the most inconspicuous. By performing the tension setting (adjustment), even if the cause (condition) of the registration shift changes, the adjustment is performed so that the registration shift can be minimized.

[0015]

As described above, the registration deviation increases or decreases depending on the environment, the bobbin winding position, and the like. for that reason,
Heat, humidity, bobbin winding position, etc., which are the factors (conditions) causing the registration shift, are averaged for the fluctuations (changes),
In this state, the tension of the ink sheet 3 is set (adjusted) so that the misregistration is the least noticeable, and even if the environment, the bobbin winding position, or the like changes from this average state, the misregistration occurs. Although the tension of the ink sheet 3 is set (adjusted) so that the degree is as small as possible, if the registration error occurs due to changes in the environment, bobbin winding position, etc. from the average state, after all It was a compromise.

Therefore, the present invention has been made in view of such a problem,
To provide a registration error correction mechanism of a printing apparatus capable of obtaining a high-quality printing screen even if the registration error occurs due to changes in heat, humidity, bobbin winding position, etc., which are the factors causing the registration error. It is intended.

[0017]

According to a first aspect of the present invention, there is provided a registration misregistration correction mechanism for a printing apparatus, in which a plurality of colors of printing paints by thermal sublimation are superposed and transferred from an ink sheet onto a printing paper to form an image. In a thermal sublimation type printing apparatus that prints on the printing paper as a printing screen, a registration deviation detecting unit that detects a registration deviation amount that occurs when the printing paints of a plurality of colors are transferred, and the registration deviation. Correction amount corresponding to the registration deviation amount, the correction amount notifying means for notifying the thermal sublimation type printing apparatus, and the ink sheet and the ink sheet based on the correction amount from the correction amount notifying means. It is characterized in that it is provided with a printing paper feed mechanism for changing the amount of conveyance of each printing paper and the back tension.

According to a second aspect of the present invention, there is provided a registration deviation correction mechanism for a printing apparatus, wherein a plurality of colors of printing paints by thermal sublimation are superposed and transferred from an ink sheet onto a printing paper, and the image is used as a printing screen. In a thermal sublimation type printing apparatus that prints on a drawing paper, visually identifies the registration deviation amount that occurs when the printing paints of the plurality of colors are superimposed and transfers the correction amount corresponding to the identified registration deviation amount. The thermal sublimation printing device is notified by operating a correction amount notifying means such as a variable device, and the printing operation of the thermal sublimation printing device is corrected by controlling the printing paper feed mechanism based on the correction amount. It is characterized by performing.

According to a third aspect of the present invention, there is provided a printing apparatus registration misregistration correction mechanism, wherein the thermal sublimation printing apparatus has the variable resistor or the like. On the basis of the correction amount notified by the correction amount notifying means, the printing paper feeding mechanism is controlled to advance or delay the sublimation start position of each color on the ink sheet.

According to a fourth aspect of the present invention, there is provided a printing apparatus registration misregistration correction mechanism, wherein the thermal sublimation printing apparatus has the variable resistor or the like. Based on the correction amount notified by the correction amount notifying means, the printing paper feeding mechanism is controlled to affect the feeding of the printing paper, and the feeding force for feeding the ink sheet and the absolute amount of the back tension. The balance is characterized by changing the frictional force of the mechanical clutch mechanism and changing the driving force of the transport motor.

According to the first to fifth aspects of the present invention, when the registration shift is confirmed by looking at the printing screen on the printed printing paper, the user of the thermal sublimation type printing apparatus performs the registration. The shift amount is visually identified, and the correction amount corresponding to the identified registration shift amount is notified to the thermal sublimation printing apparatus by operating the correction amount notifying means such as a variable device (volume). Then, the thermal sublimation type printing apparatus corrects and controls the printing operation of the thermal sublimation type printing apparatus based on the correction amount. As a result, registration misalignment correction is performed manually, and even if the registration misalignment state changes under various conditions such as the use environment, changes over time, individual differences, etc., it is possible to obtain good printed images without misregistration. Become.

According to a fifth aspect of the present invention, there is provided a printing apparatus registration misregistration correction mechanism, wherein the registration misregistration amount is visually identified in the printing apparatus registration misregistration correction mechanism. It is characterized in that it is performed by using a mark for deviation detection, which is provided at the edge of the printing screen printed on the printing paper or a part outside the printing screen frame at the same time when printing is performed.

According to a sixth aspect of the present invention, there is provided a misregistration correction mechanism for a printing apparatus according to the fifth aspect of the present invention, wherein the misregistration correction mechanism for a printing apparatus is configured such that each color of the misregistration detection mark corresponds to the printing paper feed direction. It is characterized in that the prints are arranged side by side so as not to overlap in one horizontal row.

According to a seventh aspect of the present invention, there is provided a registration misalignment correction mechanism for a printing apparatus according to the fifth aspect, wherein the misregistration misalignment correction mechanism has a printing position of each color for 10 minutes. A plurality of shift setting patterns, which are shifted by several millimeters, are printed from the forward direction to the late direction of the printing paper conveyance of the registration shift.

According to an eighth aspect of the present invention, there is provided a registration error correction mechanism for a printing apparatus, wherein in the registration error correction mechanism for a printing apparatus according to the fifth aspect, whether or not the mark for detecting the deviation is printed. It is characterized in that it can be operated and a pattern unrelated to the original print image can be selected by the user's intention.

Here, according to the inventions described in claims 6 to 8, in addition to the functions and effects of the inventions described in claims 1 to 5, the registration deviation amount can be easily detected. Outside the print screen frame (or the print screen edge) on the print paper
In addition, since the dummy pattern that is easy to recognize the registration shift amount is printed, the detection accuracy can be improved.

According to a ninth aspect of the present invention, there is provided a registration deviation correcting mechanism for a printing apparatus, wherein a plurality of colors of printing paints by thermal sublimation are superposed and transferred from an ink sheet onto a printing paper, and an image is used as a printing screen. In a thermal sublimation printing apparatus configured to print on a drawing paper, a paper feeding drive unit having a rotation and rotation angle detection function for controlling the conveyance of the printing paper, the feeding conveyance of the ink sheet and the back tension, and the cueing of the printing paper are performed. Cue detection means for detecting, a means for feeding the printing paper to the printing start position, a thermal head for starting printing by starting thermal driving, and a density deviation of the front end of the printing screen in the middle of printing, Image recognition means for detecting the density deviation at the rear edge of the printing screen, and the front edge deviation as a positive value, and subtracting the rear edge deviation value appearing due to the advance registration deviation from this value Based on the means for digitizing the direction and amount, the digitized data, and the rotation detection data of the paper feed driving means, the timing of starting printing at the next printing is shifted between the respective colors by a predetermined time and printing is performed. The thermal sublimation printing apparatus is equipped with a control means for automatically controlling the thermal sublimation printing apparatus.

According to a tenth aspect of the invention, in the registration deviation correcting mechanism of the printing apparatus, the image recognition device capable of detecting the leading edge of the printing paper in the feeding direction and the ink sublimation start position from the printing paper in the middle of feeding the printing paper, or the optical detection. A type detector is provided in the main body of the printing apparatus, and the printing start position of each color on the printing paper for each color printing is unified and controlled from the position detection information obtained from the image recognition device or the photodetection type detector, and The feature is that the registration shift is automatically adjusted.

According to the ninth or tenth aspect of the present invention, the registration deviation amount is detected by the image recognizer (micro camera, reflection type optical sensor or the like), and based on the detected registration deviation amount. The printing start timing of each color at the time of the next printing is controlled and corrected by the paper feed drive mechanism that has the rotation and rotation angle detection mechanism. , Individual differences,
Even if the misregistration state changes under various conditions, it is possible to always obtain a good printed image with no misregistration.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a first embodiment of the present invention in the case where the registration deviation correction adjustment is manually performed, and is a diagram showing an operation procedure in a registration deviation correction mechanism of a printing apparatus and a registration deviation correction adjustment work of the printing apparatus. is there.

FIG. 1A is a diagram showing a state in which the user is manually performing registration deviation correction adjustment of the printing apparatus, and FIG. 1B is a diagram showing that the user is operating the registration of the printing apparatus. It is a figure showing the operation procedure in the case of making a shift correction adjustment manually.

In the first embodiment of the present invention, in order for the user to manually perform the registration deviation correction adjustment of the printing apparatus, first, one sheet is printed (printed) with the image signal by the printing apparatus (video printer). Perform (S1). Then, the user visually confirms the registration deviation amount 1b of the printing screen 1a of the printed printing paper 1, and the user determines whether or not the registration deviation amount 1b is within an allowable level (within an allowable range). (S2) If it is determined that the printing amount is within the allowable range, it is determined that the registration shift adjustment is correctly performed, and the printing screen 1a of the printing paper 1 is obtained. On the other hand, when it is determined in step S2 that the registration deviation amount 1b is not at an allowable level (outside the allowable range), the printing apparatus main body 1 is designed to eliminate the registration deviation amount 1b.
0 or the variable device (volume) 12 provided in the remote controller 11 of the printing apparatus main body 10 is operated to adjust the registration deviation amount 1b (S3).

On the other hand, the variable amount (adjustment amount) from the variable device (volume) 12 is replaced with an electric signal (S4),
It is input to an input control microcomputer (not shown) provided in the printing apparatus main body 10 (S5), and the print start position setting for each color is changed or the ink sheet tension adjustment / setting is changed (S6). The correction of 1b is performed based on the variable amount (feedback amount) of the variable device (volume) 12. As a result, it is possible to obtain the print screen 1a which has no registration shift from the next print or is within the allowable range.

A method (means) for obtaining a more accurate value of the registration deviation amount 1b when visually confirming the registration deviation amount 1b will be described below. FIG. 2 is a diagram showing an example of a print for improving the visibility of the registration deviation amount 1b (deviation of each color) between each color of the ink sheet 3 and the printing paper 1 and enabling more accurate visual confirmation.

FIG. 2A shows a case where the printing paper 1 is printed by a printing device having three printing colors, and the registration deviation amount 1b can be visually confirmed more accurately on the printing paper 1. FIG.

That is, when the printing screen 1a is printed on the printing paper 1, each printing color is printed at the same time as the printing screen 1a is printed.
A registration deviation confirmation line mark (first color 21, second color 22, third color 23) is printed outside the frame a. Moreover, as shown in FIG. 2A, the line marks of the respective colors are arranged in a horizontal line in the paper feeding direction and are arranged so as not to overlap with each other and printed.

According to this method, as in the method of visually confirming the registration shift amount described with reference to FIG. 1, the respective colors appearing at the print head portion or the print tail portion of the printing screen 1a are printed in a single color without overlapping. Compared with the case where the registration deviation amount 1b is determined by visually observing the registration portion, the registration deviation confirmation line marks 21, 22, 23 printed outside the frame of the printing screen 1a are visually determined for the deviations in the paper feed direction. Then, the registration shift amount 1b can be obtained, and the registration shift amount 1 can be more accurately calculated.
b can be obtained.

Then, by performing the operation according to the procedure shown in FIG. 1B with the registration deviation amount 1b obtained as described above, more accurate registration deviation correction adjustment is performed in the printing apparatus. You can

On the other hand, FIG. 2B is a further improved version of the method for visually confirming the registration deviation amount described with reference to FIG. 2A, in which each color line mark is intentionally shifted by several tenths of a millimeter. 9 patterns of misalignment patterns (9 grades)
2 shows an example of a printed image obtained by printing the image outside the frame of the printing screen 1a on the printing paper 1.

The nine different deviation setting patterns (registration deviation amount visual confirmation patterns) in FIG. 2B are configured as follows, for example.

Lines (A), (B), and (C) of the left and right enlarged views of the above-mentioned nine types of deviation setting patterns in FIG. 2B are respectively the first color line mark and the second color line mark. Color line mark,
The third color line mark is shown, and each color is shifted by 0.8 mm in the registration shift direction, which is four times 0.2 mm. Moreover, in the left and right enlarged views of the above-described nine types of deviation setting patterns, the arrangement order of each color line mark is reversed. Further, between the left and right shift setting patterns, shift setting patterns by each color line mark, in which the shift amount is varied by 0.2 mm, are arranged in order.

By printing the above-described nine types of misregistration setting patterns (registration misregistration amount visual confirmation patterns) outside the frame of the printing screen 1a on the printing paper 1, when misregistration occurs, the misregistration occurs. Depending on the degree of, the color line marks of the approximate deviation setting pattern appear to overlap (print).

For example, among the nine deviation setting patterns printed outside the frame of the printing screen 1a on the printing paper 1, the color line marks of the fourth deviation setting pattern from the left toward the printing paper 1 overlap. If printing is performed, it means that a registration deviation of about 0.2 mm has occurred in the direction opposite to the paper feeding direction, and the color line marks of the seventh deviation setting pattern from the left overlap toward the printing paper 1. If it is printed, it means that there is a misregistration of about 0.4 mm, which is twice the 0.2 mm in the paper feeding direction.

As described above, according to the above-described method for visually confirming the registration deviation amount, each deviation setting pattern is formed from the nine kinds of deviation setting patterns printed outside the frame of the printing screen 1a on the printed printing paper 1. The registration shift amount 1b can be easily obtained by distinguishing (at a glance) the shift setting patterns in which the respective color line marks that are printed overlap (approximately).

Then, by performing the operation in accordance with the procedure shown in FIG. 1B with the registration deviation amount 1b obtained as described above, it is possible to more easily and accurately perform the registration deviation correction adjustment in the printing apparatus. It can be performed.

As described above, the user visually confirms the printing information printed on the printing paper 1 to obtain the registration shift amount,
Thus, the case where the registration deviation correction adjustment in the printing apparatus is manually performed has been described. Next, a method of automatically performing the registration deviation correction adjustment in the printing apparatus will be described.

FIG. 3 shows a second embodiment of the present invention, showing a printing paper feeding mechanism provided with a sensor and the like for obtaining data necessary for automatically performing registration deviation correction adjustment in a printing apparatus. It is a structure perspective view.

As shown in FIG. 3, the printing paper feeding mechanism is
A paper guide roller 2a provided on a paper guide (not shown) for conveying the printing paper 1 shown in FIG.
And a thermal head 4 for sublimating the dye of the ink sheet 3 in order to apply the dye of the ink sheet 3 onto the printing paper 1, and an image recognizer (micro camera, reflection type optical sensor, etc.) for detecting the registration shift amount. A cue detector 17 for detecting the cue of the printing paper 1, and a paper feed drive mechanism 18 having a rotation and rotation angle detecting mechanism for conveying the printing paper 1.

The printing paper feeding mechanism constructed as described above operates generally as follows. That is, an image recognizer (a micro camera, a reflection type optical sensor, or the like) 16 detects a registration deviation amount, and based on the detected registration deviation amount, a printing start timing of each color at the time of the next printing is determined by a rotation angle. The paper feed drive mechanism 18 having a detection mechanism controls and corrects. The details will be described below.

FIG. 4 is a diagram showing an operation procedure of the printing paper feeding mechanism in the present invention. The automatic correction adjustment of the registration deviation in the printing apparatus will be described based on this operation procedure with reference to FIG.

In FIG. 4, when the n-th printing operation is started (T1), whether the color for which the printing operation is performed is the first color by the control means (not shown) provided in the main body 10 of the printing apparatus. Whether or not it is determined (T2), and if it is the first color, the normal printing operation is performed. When the printing paper 1 is the second color or the third color, the printing paper 1 is cued by the cued detector 17 (T3), and the paper feed drive mechanism 18 is used.
The platen 5 and the paper guide roller 2a driven by the paper are fed to the print output position (T18). At the same time, the thermal head 4 starts thermal driving, and the printing paper 1
When the sheet is fed to the print output position, printing is started with the second color or the third color (T4). Then, when the front end (printing start end) and the rear end (printing end end) of the printing screen 1a come close to the set position of the image recognizing device 16 in the middle of printing, the image recognizing device 16 starts operation and the printing screen is displayed. The deviation of the density at the front end and the rear end of 1a is measured (T5, T6, T7, T8).

This is between the first and second colors or the second
This is because when there is a misregistration between the color and the third color, the misregistration is clearly generated at either the front end or the rear end of the printing screen 1a. Then, the leading edge shift α _n appearing due to the delay registration shift detected at T6 is stored as a positive value (T9), and the trailing end shift β _n appearing at the leading registration shift detected at T8 is stored as a negative value. (T10), the front end deviation α _n and the rear end deviation
Rotation for conveying the printing paper 1, which is the direction of advance / delay, that is, the direction of misregistration (expressed by plus / minus sign) and amount (expressed by absolute value) after adding β _n. The correction amount γ _n given to the paper feed drive mechanism 18 having the rotation angle detection mechanism is quantified (T11).

Further, the difference between the digitized registration deviation correction amount γ _n and the registration deviation correction amount γ _n-1 at the (n-1) th printing, Δγ (= | γ _n −γ _{n− 1} |) is calculated (T12), and it is judged whether or not the value is within the allowable level (T13). If the value is within the allowable level, at the time of the next (n + 1) th printing As the correction amount γ ₀ for setting the printing start position (set in T18), the correction amount γ _n obtained this time (during the nth printing) is set (T14, T16). On the other hand, the T
If it is determined in 13 that the value is outside the allowable level, the correction amount γ for determining the printing start position (set in T18) at the time of the next (n + 1) th printing. _{As 0} , the correction amount γ _n-1 obtained last time (during the (n-1) th printing) is set (T15, T1).
6).

Then, the correction amount γ ₀ for determining the printing start position at the time of the next (n + 1) th printing determined by the determination at T13 is determined, and based on this value, the printing start position at T18 is determined. Is changed (T17). That is, from the next printing operation, the correction amount γ ₀ is given to the paper feed drive mechanism 18 having the rotation and rotation angle detection mechanism for conveying the printing paper 1. As a result, the print start timing for the next print is shifted between the colors, and the misregistration is corrected.

On the other hand, FIG. 5 shows the printing paper 1 in which the image recognizer 16 is modified in order to make the registration shift recognition more reliable and accurate in the second embodiment of the present invention. It is a figure.

This is because the recognition image recognizer 16 can recognize the registration deviation more reliably and accurately so that the deviation detection mark 2 can be recognized.
5 is linearly formed, for example, when the first color in the procedure of FIG. 4 is printed on the printing paper 1, it is possible to print at the same time. Then, in the registration shift amount detection operation performed when printing the second color or the third color, the line width only at the position of the shift detection mark 25 is detected and converted into data, thereby reducing the reading error. It was done like this.

[0057]

As described above, according to the present invention, even if the registration shift state changes under various conditions such as the use environment, changes over time, individual differences, etc., a good printed image with no registration shift is always obtained. be able to.

[Brief description of drawings]

FIG. 1 is a first embodiment of the present invention in a case where a registration deviation correction adjustment is manually performed, and is a diagram showing an operation procedure in a registration deviation correction mechanism of a printing apparatus and a registration deviation correction adjustment work of the printing apparatus. Is.

FIG. 2 is a diagram showing an example of a print in which the visibility of a registration deviation amount (deviation of each color) between each color of an ink sheet and a printing paper is improved and more accurate visual confirmation is possible.

FIG. 3 is a second embodiment of the present invention, and is a structural perspective view showing a printing paper feeding mechanism provided with a sensor and the like for obtaining data necessary for automatically performing registration deviation correction adjustment in a printing apparatus. It is a figure.

FIG. 4 is a diagram showing an operation procedure of the printing paper feeding mechanism in the present invention.

FIG. 5 is a diagram showing a printing paper which has been modified in order to enable the image recognizer to more reliably and accurately perform registration deviation recognition in the second embodiment of the present invention.

FIG. 6 is a diagram showing an example of a printing screen printed on printing paper.

FIG. 7 is a structural perspective view showing a conventional printing paper feeding mechanism.

[Explanation of symbols]

 1 ... Printing paper 1a ... Printing screen 1b ... Registration deviation amount 10 ... Printing apparatus main body 11 ... Remote controller for remote operation 12 ... Registration deviation adjusting volume (variable device)

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[Procedure amendment]

[Submission date] March 8, 1996

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

[Fig. 2]

[Figure 3]

[Figure 5]

FIG.

FIG. 6

FIG. 7

FIG. 4

Claims (10)

[Claims] 1. A thermal dye sublimation printing apparatus configured to print a plurality of colors of printing paint by thermal sublimation from an ink sheet onto a printing paper in an overlapping manner to print an image on the printing paper. Occurs when transferring color printing paints,
Registration deviation detecting means for detecting a registration deviation amount; correction amount notifying means for notifying the thermal sublimation printing apparatus of a correction amount corresponding to the registration deviation amount for correcting the registration deviation; and the correction amount. A registration deviation correction mechanism for a printing apparatus, comprising: a printing paper feed mechanism that changes the amount of conveyance of each of the ink sheet and the printing paper, the back tension, and the like based on the correction amount from the notification unit. 2. A thermal sublimation printing apparatus configured to print a plurality of colors of printing paint by thermal sublimation from an ink sheet onto a printing paper, and to print an image on the printing paper. By visually identifying the registration deviation amount that occurs when the color printing paints are overlaid and transferred, the correction amount corresponding to the identified registration deviation amount is operated by operating the correction amount notification means such as a variable resistor. A misregistration correction mechanism for a printing apparatus, which notifies the thermal sublimation type printing apparatus and corrects the printing operation of the thermal sublimation type printing apparatus by controlling the printing paper feeding mechanism based on the correction amount. . 3. The thermal sublimation printing apparatus controls the printing paper feeding mechanism based on the correction amount notified by the correction amount notifying means such as the variable resistor to sublimate each color on the ink sheet. The registration deviation correcting mechanism for a printing apparatus according to claim 1, wherein the start position is advanced or delayed. 4. The thermal sublimation printing apparatus controls the printing paper feeding mechanism based on the correction amount notified by the correction amount notifying means such as the variable resistor to affect the conveyance of the printing paper. 2. The balance between the feeding force for feeding the ink sheet and the absolute amount of back tension to be applied is such that the frictional force switching of the mechanical clutch mechanism and the driving force of the feeding motor are changed. Alternatively, the registration misalignment correction mechanism of the printing apparatus described in 2. 5. The visual identification of the registration misalignment amount is provided by simultaneously printing at the time of printing on the edge of the printing screen printed on the printing paper or a part outside the printing screen frame.
The registration deviation correction mechanism for a printing apparatus according to claim 1, wherein the registration deviation correction mechanism is performed using a deviation detection mark. 6. The misregistration correction of a printing apparatus according to claim 5, wherein the misregistration detection marks are arranged by printing so that the respective colors are arranged so as not to overlap in a horizontal row in the printing paper feeding direction. mechanism. 7. The misalignment detection mark is formed by printing a plurality of misregistration setting patterns in which the printing positions of the respective colors are shifted by every several tenths of a millimeter from the forward direction to the late direction of the printing paper conveyance of the registration misalignment. The registration deviation correction mechanism for a printing apparatus according to claim 5, wherein: 8. The shift detection mark can be switched between printing and non-printing, and a pattern unrelated to the original printing image can be selected by the user's intention. A registration misregistration correction mechanism for the printing apparatus according to item 1. 9. A thermal dye sublimation printing apparatus configured to print images of a plurality of colors by thermal sublimation from an ink sheet onto a printing paper in an overlapping manner to form an image on the printing paper. Paper feed drive means that has a rotation and rotation angle detection function that controls the conveyance and back tension of the ink sheet, the cue detection means that detects the cue of the print paper, and the print paper to the print start position. A means for feeding paper, a thermal head for starting printing by starting thermal driving, an image recognition means for detecting a density deviation at the front end of the printing screen and a density deviation at the rear end of the printing screen in the middle of printing, A means for digitizing the direction and amount of lead / lag by subtracting the trailing edge shift value appearing as lead / register shift from this value as a positive value, and the digitized data. And a control means for automatically controlling the thermal sublimation printing apparatus so as to shift the printing start timing in the next printing between the colors by a predetermined time based on the rotation detection data of the paper feed driving means. A registration misregistration correction mechanism for a printing apparatus, which is characterized in that 10. An image recognition device or a photodetection type detector capable of detecting the leading end side of the printing paper in the feeding direction and the ink sublimation start position from the leading end in the middle of feeding the printing paper is provided in the printing device main body, and printing is performed for each color printing. The printing start position of each color on the printing paper is unified and controlled based on the position detection information obtained from the image recognition device or the photodetection type detector, and the registration shift of the printing paper is automatically adjusted. Deviation correction mechanism.