JPH0950357A - Print controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely print the characters at a designated position and to improve the reproducibility of the print result even when a setting position shift is caused between a form that is shown for designation of the character input positions and a form that is used for print-out of the characters. SOLUTION: The image of a form is read by a reader 7 and stored in a main image memory 8 before the characters are printed on the form at a desired position. Then the image of the form is shown at a display part 3 and at the same time, the input positions are designated for the desired characters. These input positions are stored in a correction value storage part 12, and also the image is read out of the form that is presently set based on the designated input positions and then stored in a subsidiary image memory 11. Then a, correction value calculation processing part 10 compares a block image stored in the memory 8 and including the input parts of characters, for example characters, with a block image that is segmented out of the memory 11. The area segmented from the image 11 is continuously shifted until the coincidence is obtained between both block images, and the character printing positions are corrected based on the shift direction and the shift amound which are confirmed when the coincidence is obtained between both block images. Thus the desired characters can be printed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a print control apparatus for printing information such as characters and figures on a recording paper at a desired position.

[0002]

2. Description of the Related Art A print control apparatus of this type includes a reading unit for reading an image from a document, a display unit for forming a display image from the image of the document according to the positional relationship between the reading unit and the document at the time of reading, and this display. A control unit that edits a display image displayed on the unit, and a printing unit that prints on a recording member based on the display image edited by the control unit are provided.

According to this print control device, the paper is read once before printing and the read image is displayed on the screen. For example, when the paper has a standard form, characters or figures are entered in the entry field of the standard form. By inputting the data, the information such as desired characters and figures can be printed in the entry field of the same paper when the same paper is set next time.

As described above, if the recording paper having the standard form is prepared, it is possible to print necessary items in the entry fields in the standard form without printing the standard form itself. .

[0005]

However, in the above-described conventional print control device, the paper is manually positioned at the paper feed port, and therefore the paper set at the time of the first reading and the paper set at the time of the second reading are set. There may be misalignment with the paper set during printing. When the standard form is read, the characters are edited while checking the entry position based on the read image data of the read image, so the edit result on the display screen shows a layout-like but near-complete image. It will be. On the other hand, at the printing stage, even if the contents of the read image on the reloaded paper are the same as those at the time of the first reading, the edit result on the display screen and the print result on the paper may be There is a problem that the reproducibility of the printing result is lowered, such as the printing character is out of the entry field because the positional deviation occurs between the and.

An object of the present invention is to provide a designated input even if there is a positional misalignment between a sheet displayed for designating a character input position and a sheet for printing out the character. It is an object of the present invention to provide a print control device that enhances the reproducibility of a print result by reliably printing out a character at a position.

[0007]

According to the first aspect of the present invention,
Image storage means for storing a read image read from a sheet set in a printing device, display control means for controlling display of the read image on a display screen, and print output position of desired data on the displayed read image. An output position designating means for arbitrarily designating the storage position, and a position calculation storage means for calculating a storage position of the desired data on the read image based on the designated print output position and storing the storage position as position information. When printing the desired data, a read control means for newly reading an image from a sheet currently set in the printing device, and a read image read by the read control means are stored in the image storage means. Compared with the read image that is being read, Detection means for detecting the deviation amount, correction means for correcting the position information stored in the position calculation storage means in accordance with the detected deviation direction and the deviation amount, and the position corrected by the correction means. Print control means for controlling to print the desired data on a sheet currently set in the printing device based on the information.

According to the above construction, the image storage means stores the read image read from the paper set in the printing device, and the display control means controls the display of the read image on the display screen, and the output position. The designation means arbitrarily designates the print output position of the desired data on the displayed read image. Then, the reading control unit calculates a storage position of the desired data on the read image based on the designated print output position and stores the storage position as position information. When the detection unit prints the desired data. In addition, a new image is newly read from the paper currently set in the printing device, and the read image is compared with the read image stored in the image storage means, and the vertical and horizontal shift directions of these read images are compared with each other. The amount of deviation is detected. Further, the correction unit corrects the position information stored in the position calculation storage unit according to the displacement direction detected by the detection unit and the displacement amount, and the print control unit converts the position information corrected by the correction unit. Based on this, control is performed to print the desired data on the sheet currently set in the printing device.

Therefore, even if the read image read from the sheet set this time is deviated in the vertical and horizontal directions from the read image initially read from the sheet,
The desired data specified for the first read image,
It is possible to improve the reproducibility of the print result by surely printing out at a desired position according to the positional deviation of the read image this time.

According to a second aspect of the present invention, the correction means comprises:
It is characterized in that the position information is corrected in units of rows. As described above, since the position information is corrected line by line, even if the paper is misaligned during printing, the misalignment can be immediately dealt with and precise print output to a desired position can be performed.

According to a third aspect of the present invention, the detection means comprises:
An error is notified when the deviation amount exceeds a predetermined print allowable range. In this way, printing is allowed for deviations within the desired printing allowable range, and errors are made for those deviations outside the desired printing allowable range. Therefore, it is possible to prevent a failure such as a jam that may be caused by an extreme positional deviation.

According to a fourth aspect of the present invention, image storage means for storing a first read image read from a sheet set in the printing device, and display control for controlling display of the first read image on a display screen. Means, position designating means for arbitrarily designating a print output position of desired data on the displayed first read image, and the first designating unit for the desired data based on the designated print output position.
Position calculation storage means for calculating a storage position on the read image of and storing the storage position as position information,
When printing the desired data, a read control unit that newly reads an image from a sheet currently set in the printing apparatus, and a second read image read by the read control unit are stored in the image storage unit. Detecting means for detecting the rotation state of the second read image with respect to the first read image as compared with the first read image stored in the first read image, and the desired data set in the printing device. When printing is performed on a sheet of paper, a print control unit that controls to print by rotating the sheet according to the rotation state detected by the detection unit is provided.

With the above arrangement, the image storage means stores the first read image read from the paper set in the printing device, and the display control means displays the first read image on the display screen. The position of the desired data is controlled to be arbitrarily designated on the displayed first read image by controlling the position. And
The position calculation storage means calculates the storage position of the desired data on the first read image based on the designated print output position and stores the storage position as position information. Further, when the desired data is printed by the reading control means, a new image is newly read from the sheet currently set in the printing device, and the second reading image read by the reading control means is detected by the detecting means. The rotation state of the second read image with respect to the first read image is detected in comparison with the first read image stored in the image storage means, and the print control means detects the rotation state of the sheet set in the printing device. On the other hand, when printing the desired data, control is performed so that the desired data is rotated and printed in accordance with the rotation state detected by the detection means.

Therefore, even if the second read image read from the sheet set this time is tilted and rotated with respect to the first read image read first, the desired image specified in the first read image is obtained. Data
It is possible to improve the reproducibility of the print result by surely printing out at a desired position according to the rotation state of the second read image.

[0015]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Embodiment 1. FIG. 1 is a block diagram showing an embodiment of a print control apparatus according to the invention of claim 1. The print control apparatus shown in the figure is applied to an electronic device such as a word processor having a serial printer type print function, for example. To be done.

The above-mentioned print control apparatus is, for example, a CPU 1 which controls the entire apparatus, a ROM 2 which stores various programs for operating the CPU 1, a RAM 3 which is used as a work area for various programs, and an input section 4. A display unit 5, a printing unit 6, an image reader (hereinafter referred to as a reader) 7, a main image memory 8, an input character / position information table 9, a correction value calculation processing unit 10, and a sub image memory 11. A correction value storage unit 12 and a bus 13 for transmitting signals such as addresses and data are provided.

The CPU 1 controls this device according to various programs stored in the ROM 2. The ROM 2 stores a program and the like for operating the present apparatus according to the flowcharts shown in FIGS. 11 and 12, which will be described later, and the RAM 3 is used as a work area when executing the program.

The input section 4 is provided with an input device such as a key. The display unit 5 is a device that displays an image such as a read / write screen input by a reader 7 (described later) or a creation / editing screen for document processing or the like. The printing unit 6 is a device that includes a carriage, moves in the main scanning direction and the sub scanning direction, and prints an image such as a document. The reader 7 is a reading device attached to the carriage of the printing unit 4, and is movable integrally with the carriage.

The main image memory 8 is the reader 7
It has a memory capacity capable of storing an image (hereinafter referred to as image data) read from paper. The input character / position information table 9 is a memory that stores the input character and its absolute position information in association with each other, for example, in the format shown in FIG.

The correction value calculation processing unit 10 calculates a correction value according to the flow chart shown in FIG. 13, which will be described later. In this processing, a predetermined size (for example, 500) is used.
The sub-image memory 11 that stores image data of (× 500 dots) and the correction value storage unit 12 illustrated in FIG. 3 are used.

Next, the operation will be described. FIG. 2 is an explanatory diagram for explaining the contents of the input character / position information table 9, and FIG. 3 is an explanatory diagram for explaining the contents of the correction value storage unit 12. FIG. 4 is a top view showing an example of used paper, and FIG.
9 is an explanatory view for explaining a method of using the memory, FIG. 10 is a top view showing an example of a printing result of the paper shown in FIG. 4, and FIG.
13 to 13 are flowcharts for explaining data input processing to printing processing. In the following description, as an example, FIG.
The recording paper 40 is used as shown in FIG. This recording paper 40 is
It has a fixed form formed by arranging the entry fields indicated by 41 to 45.

When the start of the data input process is instructed, the set recording paper 40 is image-read by the operation of the reader 7 from the paper feed port (not shown). The image data is stored in the main image memory 8 as shown in FIG. 5, for example (FIG. 11; steps S1 to S3). In the main image memory 8, 8a is an empty area, 50 is image data of the recording paper 40, and 51 to 55 are entry fields 41 to 41.
Image data corresponding to 45 are shown respectively,
This image data 50 is stored in the memory with a margin.

An image corresponding to the contents stored in the main image memory 8 is displayed on the display unit 5 (step S4), and data (data such as characters and figures) is input to the display image. To be done.

Before inputting the character data, the editing position (including the character input position) is designated, and when the position is designated on the display screen by the cursor (step S5),
Absolute position information (x, y) indicating the absolute position (coordinates) on the main image memory 8 corresponding to the designated position is calculated (step S6).

This absolute position information (x, y) is a base point for inputting one character or a continuous character string, and character data can be input by designating this position.

In the next steps S7 and S8, for example, when the character string "character recognition" is input (see FIG. 6),
Codes for each letter of "sentence", "letter", "accept", "knowledge"
The absolute position information, which is the base point of the input, is stored in association with each other (see FIG. 2). In the case of the character string "character recognition", the absolute position information is stored as coordinates (P, Q), and the display area 60 is secured as shown in FIG. Then, in the case of inputting a character to another place, the process is returned to step S5 and the above-described process is repeatedly executed until an instruction to end the operation is given (step S9). In this way, the data input process is completed.

Next, the print processing will be described. When the start of the printing process is instructed and the paper (the recording paper 40 is set similarly to the data input process) is set in the paper feed port (not shown),
The processing shifts to the correction value calculation processing (step S11).
This correction value correction processing will be described with reference to FIG.

First, a valid image is searched in the main image memory 8. Here, the effective image refers to a black dot forming a certain shape, such as image data 71 to 75 corresponding to the entry fields 41 to 45. In this example, the search ends by detecting the upper left end position of the image (step S21). When a valid image is detected in this way, its position is stored in the correction value storage unit 12 as absolute position information (coordinates (a, b)) (step S22).

Next, the reader 7 is moved to a position on the recording paper 40 corresponding to the above coordinates (a, b), and the image of a predetermined size is printed from the recording paper 40 currently set in the paper feed port. Is read (steps S23 and S2).
4). The image read by this image reading is stored in the sub-image memory 11 as shown in FIG. 7 (step S25). In FIG. 7, 11a indicates an empty area.

Then, a block image (block image data) of n × m dot size is cut out from the position of the base point (coordinates (a, b)) from the main image memory 8. This block image is indicated by IORG. Then, from the read image stored in the sub-image memory 11, a block image (block image data) of n × m dot size with the coordinates (a, b) as the base point is cut off. This block image is indicated by ICOM.

Next, the block images IORG and ICO
M and M are compared by pattern matching. As a result, if no match is obtained, the process proceeds to step S2.
If it is found that there is a match, the process proceeds to step S.
Move to 32.

When the process proceeds to step S29, it is determined whether or not the shift amount of the block image ICOM matching the block image IORG is within the predetermined print allowable range. Therefore, in order to match the patterns of the block image IORG and ICOM, the block image I is within the print allowable range.
The process of shifting the COM cutting position in dot units in the x (main scanning) direction and the y (sub scanning) direction is repeatedly executed (steps S27 to S30). Further, in step S29, if it is confirmed that the shift amount exceeds the print allowable range in the next shift, an error process for displaying a message for guiding the resetting of the paper on the display unit 5, for example, is executed. The process returns to step S11 (see FIG. 12). In this way, by displaying the message and notifying the operator of the error, it is possible to avoid a failure such as a jam in advance.

Further, when the processing shifts to step S32, since the shift amount of the block image ICOM matching the block image IORG is within the predetermined print allowable range, the coordinates (A, B) is stored in the correction value storage unit 12. Further, in steps S33 and S34, the correction values Δa and Δb respectively indicating the shift amounts in the x direction and the y direction are expressed by the following equation (1),
It is obtained by (2). Δa = A−a (1) Δb = B−b (2)

Then, in step S34, the correction values Δa and Δb are stored in the correction value storage unit 12.

When the correction value calculation process is completed in this way, the process returns to step S13 (see step 12) again.
Input character / position information table 9 after step S13
The first input character data (character code) stored in the table and its absolute position information (coordinates (P, Q)) are read in association with each other, and the absolute position information is read out.
It is corrected by the correction values Δa and Δb stored in. This is shown in the following equations (3) and (4). P '= P + Δa (3) Q' = Q + Δb (4)

The corrected absolute position information (coordinates (P ', Q')) corresponds to the position shown in FIG. 9 in the image data, and the recording paper currently set in the paper feed port. 40 shows the print start position when printing on 40. This print start position is stored in the correction value storage unit 12 as shown in FIG. 3 (step S14). Then, in steps S15 and S16, the carriage of the printing unit 6 is moved with the printing start position as the absolute position, and the printing process based on the read character data is controlled. Further, when character data is stored in the input character / position information table 9, the process is returned to step S13 and the above process is repeatedly executed (step S17).

According to the printing result obtained as described above, as shown in FIG. 10, the character is output at the specified position on the display screen, and the character string "character recognition" is projected from the predetermined entry field 41. It is possible to eliminate such problems.

As described above, according to the first embodiment of the invention, the read image read from the recording paper 40 set this time is deviated in the vertical and horizontal directions from the read image read from the recording paper 40 first. Even if the desired character data specified for the first read image is corrected and printed according to the positional deviation of the current read image, the reproducibility of the print result can be improved.

In the above description, the deviation is corrected with a continuous character string as one unit, but the deviation may be corrected in units of line regardless of the presence or absence of the continuation. In this case, if one character string is continuously input over several lines by line feed etc., the base point (absolute position) of the first character of the next line is calculated based on the base point specified first, By storing this in the input character / position information table 9 in association with the character code, the input character can be managed line by line. According to this, since the start position of the character printing of the same line is corrected before printing one line, for example, even if the position is slightly deviated from the middle of the recording paper during printing, it is possible to obtain the correct position. You can print letters high. The absolute position for the input character may be specified on a line basis or a character string basis.

Embodiment 2 In the first embodiment described above, the deviation in the vertical and horizontal directions of the set paper is detected, but the inclination of the set paper according to the following second embodiment is also included in the correction target. explain.

FIG. 14 is a block diagram showing an embodiment of a print control apparatus according to the invention of claim 2. In FIG. 14, the same components as those in FIG.
The description is omitted.

The correction value calculation processing section 14 shown in FIG.
Correction value storage unit 15, first block image memory 16,
Also, the correction value is calculated using the second block image memory 17.

The correction value storage unit 15 stores the block images IORG and ICO in the contents stored in the correction value storage unit 12 described above.
The rotation angle θ which is a relative inclination between M is added. The first block image memory 16 is a block image IO cut out from the main main image memory 8.
The second block image memory 17 has a memory capacity for storing the RG, and the second block image memory 17 has a memory capacity (area) capable of storing the block image ICOM cut out from the sub image memory 11 and rotating the image. There is.

Next, the operation will be described. FIG. 16 and FIG. 17 are explanatory diagrams for explaining how to use the memory when the read image at the time of printing is rotated.
Reference numerals 19 and 19 are flowcharts for explaining the procedure of the printing process. The print process is executed according to the program stored in the ROM 2, but the correction value calculation processing unit 10 executes the correction value calculation process part. Since the data input process is the same as that in FIG. 11, the description thereof will be omitted, and different print processes will be mainly described below.

First, when the recording paper 40, which is a paper, is set, the reader 7 is operated to read an image (steps S41 and S42). The read image (image data) is stored in the sub-image memory 11 as shown in FIG. 11 (step S43). In the sub-image memory 11, 70 indicates image data of the recording paper 40, and 71 to 75 indicate image data corresponding to the entry columns 41 to 45, respectively.

Subsequently, in steps S44 and S45, similar to steps S21 and S22 in FIG. 13, a valid image base point is searched based on the image data already stored in the main image memory 8, and the coordinates of the base point are searched. A process of storing (a, b) in the correction value storage unit 15 is executed. Then, a block image IORG of n × m dot size is cut out from the base point and stored in the first block image memory 16 (steps S46 and S4).
7).

Further, with respect to the sub-image memory 11, the base point is searched, the block image ICOM is cut out from the base point, and the second block image memory 1 is extracted.
7 is stored (steps S48 to S51). The base point of the block image ICOM has an x coordinate indicated by A ′ and ay coordinate indicated by B ′, and these are also stored in the correction value storage unit 15 (see FIG. 15).

Subsequently, the block images IORG and ICOM are read from the first and second block image memories 16 and 17.
Is read, and pattern matching between block images is executed (step S52). As a result, if they match, the process proceeds to the next step S55, while if they do not match, the process proceeds to the rotation process of step S54 (step S53).

When the process directly proceeds to step S55 without going through the rotation process of step S54, it is determined that there is no relative inclination between the block images and the base point position stored in the correction value storage unit 15 The shift amounts (correction values Δa and Δb) between the coordinates (a, b) and (A ′, B ′) in the x (main scanning) direction and the y (sub scanning) direction are the above-mentioned (1) and (2). Correction value storage unit 1 calculated according to the formula
5 is stored (step S56).

In step S54, the image data 51 (see FIG. 5) in the first read image corresponds to the image data 71 obtained by the current reading, as in the example of FIG. As described above, the processing is executed when the inclination is inclined upward by the angle θ. In this case, based on the block image IORG, the block image ICOM in the second block image memory 17 is rotated clockwise or counterclockwise from the position of the coordinates (A ′, B ′) of the image as a base point. The process of pattern matching is executed. The rotation angle θ is obtained by repeatedly executing this rotation process (step S54). In the example of FIG. 16, the block image ICOM is
ICO to the left around the base point (coordinates (A ', B'))
The pattern coincidence is obtained by rotating to the position of M ′ by the rotation angle θ. This rotation angle θ is the correction value storage unit 1
5 is stored.

When the block image ICOM is rotated by a certain amount or more and no match is obtained, the recording paper is forcibly set again for reasons such as printing error avoidance. Processing for displaying the message on the display unit 3 is executed. After this message is displayed, the process returns to step S41, and the sheet is set again for resetting. The rotation limit is preferably about 5 °, but can be arbitrarily set due to mechanical or processing reasons.

In this way, when the pattern matching is obtained and the processing up to the calculation of the correction value is completed, step S57.
The processing shifts to step S13 and step S14 in FIG.
Similarly to the above, the process of reading the character data from the input character / position information table 9 and obtaining the print start position (coordinates (P ′, Q ′)) is executed. It should be noted that the print start position is not always the print start position depending on the inclination of the currently set recording paper 40, that is, the rotation state according to the rotation angle θ.

Next, printing is controlled by rotating the angle of the character pattern based on the read character data based on the printing start position according to the rotation angle θ. Also in this case, if character data is further stored in the input character / position information table 9, the process is returned to step S57 and the above process is repeatedly executed (step S6).
0).

Regarding the printing result obtained as described above,
As in the case of FIG. 10, the characters are output at the specified positions on the display screen, and it is possible to eliminate the problem that the characters protrude from the predetermined entry field.

As described above, according to the second embodiment of the invention, even if the image block ICOM read from the sheet set this time is tilted and rotated with respect to the image block IORG read first, the block is rotated. It is possible to improve the reproducibility of the print result by correcting the desired character data specified in the image IORG in accordance with the rotation state of the block image ICOM and printing it out.

In the above-mentioned pattern recognition, the process of rotating the block image is executed by the rotation process of step S54 until the patterns match or the limit of the mismatch, but the present invention is not limited to this. Instead, for example, vector information may be extracted and the rotation angle θ may be obtained from the vector information. This eliminates the need for loop processing for changing the repeating angle, so that processing speed and other aspects are not required. It is possible to improve efficiency.

Further, the valid image is not limited to the rectangular entry field as in the case of the recording paper 40,
Any shape such as a straight line, a curved line, a waveform, a circle, an ellipse or the like may be used as long as it is a base point for character input.

Further, although the above-mentioned print control device has been described by taking the serial printer type as an example, the present invention is not limited to this and can be applied to the line printer type.

[0059]

According to the first aspect of the invention, even if the read image read from the sheet set this time is deviated in the vertical and horizontal directions with respect to the read image initially read from the sheet, the first read image is obtained. Provided is a print control device capable of improving reproducibility of print results by matching desired data designated with respect to this time with the positional deviation of the read image and surely printing the desired data at the designated position. be able to.

According to the second aspect of the invention, the position information is corrected line by line. Therefore, even if the paper is misaligned during printing, the misalignment is immediately dealt with, and the misalignment to the desired position is performed. Precise print output is possible.

According to the third aspect of the present invention, the printing is permitted for the deviation within the predetermined printing allowable range, and the error notification is given for the deviation within the predetermined printing allowable range. It is possible to prevent the failure of the.

According to the fourth aspect of the invention, even if the second read image read from the sheet set this time is tilted and rotated with respect to the first read image read first, the first read image is rotated. The print control device capable of improving the reproducibility of the print result by matching the desired data specified in the read image with the second read image and surely printing out the desired data at the specified position. Can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment (embodiment 1) of a print control apparatus according to the invention of claim 1. FIG.

FIG. 2 is a diagram showing an example of contents of an input character / position information table in the first embodiment.

FIG. 3 is a diagram showing an example of contents of a correction value storage unit according to the first embodiment.

FIG. 4 is a top view showing an example of recording paper.

FIG. 5 is a diagram illustrating a method of using a main image memory.

FIG. 6 is a diagram illustrating a method of using a sub-image memory.

FIG. 7 is a diagram illustrating a method of using a sub-image memory.

FIG. 8 is a diagram illustrating a method of using a sub-image memory.

FIG. 9 is a diagram illustrating a method of using a sub-image memory.

FIG. 10 is a top view illustrating an example of a print result.

FIG. 11 is a flowchart illustrating a data input process according to the first embodiment.

FIG. 12 is a flowchart illustrating print processing according to the first embodiment.

13 is a flowchart illustrating the correction value calculation process of FIG.

FIG. 14 is a block diagram showing an embodiment (embodiment 2) of the print control apparatus according to the invention of claim 2;

FIG. 15 is a diagram showing an example of contents of a correction value storage unit in the second embodiment.

16A and 16B are diagrams illustrating a method of using a memory in Embodiment 2.

FIG. 17 is a diagram illustrating a rotation angle θ.

FIG. 18 is a flowchart illustrating a procedure of printing processing according to the second embodiment.

FIG. 19 is a flowchart illustrating a procedure of print processing according to the second embodiment.

[Explanation of symbols]

 1 CPU 2 ROM 3 RAM 4 Input section 5 Display section 6 Printing section 7 Reader 8 Main image memory 9 Input character / position information table 10, 14 Correction value calculation processing section 11 Sub-image memory 12, 15 Correction value storage section 13 Bus 16 First block image memory 17 Second block image memory 40 Paper 41-45 Entry fields 50-55, 70-75 Image data 60 Display area θ Rotation angle

Claims (4)

[Claims] 1. An image storage unit for storing a read image read from a sheet set in a printing device, a display control unit for controlling display of the read image on a display screen, and a desired image on the displayed read image. Output position designating means for arbitrarily designating a print output position of data, and calculating a storage position of the desired data on the read image based on the designated print output position and storing the storage position as position information. A position calculation storage means, a read control means for newly reading an image from a sheet currently set in the printing device when printing the desired data, and a read image read by the read control means, Compared with the read images stored in the storage means, these read images are vertically and horizontally A detection unit that detects the displacement direction and the displacement amount, a correction unit that corrects the position information stored in the position calculation storage unit according to the detected displacement direction and the displacement amount, and the correction unit. Based on the corrected position information,
And a print control unit that controls to print the desired data on a sheet set in the printing device. 2. The print control apparatus according to claim 1, wherein the correction unit corrects the position information on a line-by-line basis. 3. The print control apparatus according to claim 1, wherein the detection means notifies an error when the deviation amount exceeds a predetermined print allowable range. 4. An image storage unit for storing a first read image read from a sheet set in a printing device; a display control unit for controlling display of the first read image on a display screen; Position specifying means for arbitrarily specifying a print output position of desired data on the first read image, and a storage position of the desired data on the first read image based on the specified print output position. A position calculation storage unit that calculates and stores the storage position as position information; a read control unit that newly reads an image from a sheet currently set in the printing device when printing the desired data; The second read image read by the read control means is compared with the first read image stored in the image storage means. Detecting means for detecting a rotation state of the second read image with respect to the first read image; and detecting means for detecting the desired data on a sheet set in the printing device by the detecting means. And a print control unit that controls to rotate and print according to the rotation state.