JP2022104334A - Printer, printing data creation method, and program - Google Patents

Abstract

To prevent a step from being generated in an edge of a printed character in a printer.SOLUTION: A printer comprises: a data acquisition unit which acquires character data; an expansion unit 112 which creates expansion data by allocating pixel values of 9 pixels included in a region constituted by 3 pixels×3 pixels included in the character data to a correction region in 3 grids×3 grids larger than the region; a storage unit which stores a correction method in association with a plurality of matching patterns having mutually-different patterns of pixel values of a plurality of grids included in the region in 3 grids×3 grids; a selection unit 113 which selects the matching pattern that matches a pattern indicated by the pixel values of 9 grids included in the correction region from the plurality of matching patterns stored in the storage unit; a correction unit 114 which creates printing data by correcting the pixel values in the plurality of correction regions included in the expansion data by the correction method corresponding to the matching pattern selected by the selection unit; and a printing unit which prints the printing data.SELECTED DRAWING: Figure 1

Description

The present invention relates to a printing device, a print data creation method, and a program.

Conventionally, a printing device for enlarging and printing an image is known. Patent Document 1 discloses a technique relating to an image enlargement method used in a printer.

Japanese Unexamined Patent Publication No. 3-222574

In a printing device, when an image is enlarged and printed, there is a problem that a jagged step is generated at the edge of the printed character.

Therefore, the present invention has been made in view of these points, and an object of the present invention is to provide a printing apparatus that makes it difficult for a step to be generated at the edge of a printed character.

In the first aspect of the present invention, a data acquisition unit that acquires character data to be printed and pixels of nine pixels included in an area composed of 3 pixels × 3 pixels included in the character data. By allocating the value to the correction area of 3 squares × 3 squares larger than the area, the enlarged part for creating the enlarged data and the pattern of the pixel values of the plurality of squares included in the area of 3 squares × 3 squares are respectively. A storage unit that stores a plurality of different matching patterns and a correction method in association with each other, and a matching pattern that matches the pattern indicated by the pixel values of 9 squares included in the correction area from the plurality of matching patterns stored by the storage unit. A selection unit for selecting the above, and a correction unit for creating print data by correcting the pixel values of a plurality of the correction regions included in the enlarged data by a correction method corresponding to the matching pattern selected by the selection unit. Provided is a printing apparatus including a printing unit for printing the print data.

Further, in the enlarged portion, after the pixel value of each of the plurality of pixels is assigned to the central cell of the plurality of cells in the correction area, the pixel value of the cell adjacent to the cell corresponds to the character data. The pixel value of the pixel adjacent to the pixel may be set.

Further, the enlarged portion assigns the pixel value of each of the plurality of pixels to the central cell of the plurality of cells in the correction area, and then the second pixel value surrounded by the plurality of cells of the first pixel value. The pixel value of the cell may be changed to the first pixel value.

Further, the data acquisition unit further acquires enlargement ratio data indicating the enlargement ratio when printing the character data, and the enlargement unit is included in the correction area based on the enlargement ratio indicated by the enlargement ratio data. The size of each of the nine cells may be determined.

Further, the correction unit sets the pixel value of the region on the side of the plurality of cells with respect to the diagonal line of the cells of the second pixel value in contact with the plurality of cells of the first pixel value included in the correction area as the first pixel value. It may be corrected to.

Further, the correction unit has a first cell of the second pixel value that touches a plurality of squares of the first pixel value included in the correction area, and a second pixel value that touches the first square and the square of the first pixel value. The pixel value of the region on the side of the plurality of squares may be corrected to the first pixel value with respect to the diagonal line of the rectangular region composed of the second square.

Further, in the correction area, the correction unit is composed of two cells having the first pixel value adjacent to each other and one cell having the second pixel value included in the same row or column as the two cells. In the rectangular area to be constructed, the pixel value of the area on the side of the other square of the first pixel value is corrected to the first pixel value with respect to the diagonal line of the rectangular area, and the area opposite to the diagonal line is corrected. The pixel value may be corrected to the second pixel value.

In the second aspect of the present invention, a step of acquiring character data to be printed, which is executed by a computer, and nine elements included in an area composed of 3 pixels × 3 pixels included in the character data. A step of creating enlarged data by allocating the pixel value of a pixel to a correction area of 3 squares × 3 squares larger than the above area, and a plurality of matching patterns in which the pixel value of the area of 3 squares × 3 squares is different from each other. By referring to the matching data associated with the correction method, a step of selecting a matching pattern that matches the pattern indicated by the pixel value of 9 cells included in the correction area from the plurality of matching patterns, and the selected matching. Provided is a print data creation method including a step of creating print data by correcting pixel values of a plurality of the correction regions included in the enlarged data by a correction method corresponding to a pattern.

In the third aspect of the present invention, the computer has a step of acquiring character data to be printed, and nine pixels included in an area composed of 3 pixels × 3 pixels included in the character data. A step of creating enlarged data by allocating a pixel value to a correction area of 3 squares × 3 squares larger than the above area, and a plurality of matching patterns and correction methods in which the pixel values of the area of 3 squares × 3 squares are different from each other. By referring to the matching data associated with and, the step of selecting a matching pattern that matches the pattern indicated by the pixel value of the 9 cells included in the correction area from the plurality of matching patterns, and the selected matching pattern Provided is a program for executing a step of creating print data by correcting a plurality of pixel values of the correction area included in the enlarged data by a corresponding correction method.

According to the present invention, in a printing apparatus, it is possible to make it difficult for a step to be generated at the edge of a printed character.

The configuration of the printing apparatus according to this embodiment is shown. It is a flowchart which shows the operation flow of a printing apparatus. An example of character data to be printed is shown. An example of a plurality of correction areas is shown. An example of the first stage data created by the enlarged part is shown. An example of the second stage data created by the enlarged part is shown. An example of enlarged data is shown. An example of a plurality of matching patterns stored in the storage unit is shown. An example of the correction method is shown. An example of print data is shown. A modified example of the correction method is shown.

[Overview of printing device S]
FIG. 1 is a diagram showing a configuration of a printing apparatus S according to the present embodiment.
The printing device S has a control unit 11 and a storage unit 12. The control unit 11 is, for example, a CPU (Central Processing Unit), and by executing a program stored in the storage unit 12, the data acquisition unit 111, the enlargement unit 112, the selection unit 113, the correction unit 114, and the printing unit 115 Functions as.

The data acquisition unit 111 acquires character data to be printed. Further, the data acquisition unit 111 acquires the enlargement ratio data. The enlargement ratio data is data indicating the enlargement ratio when printing character data. In this embodiment, a case where the enlargement ratio is 9 times is illustrated, but the enlargement ratio is arbitrary. The enlargement ratio may be a value indicating the ratio to the character data to be printed, and when the enlargement ratio is 9 times, the enlargement ratio data value may be "9" or "900%". ..

The data acquisition unit 111 acquires character data and enlargement ratio data from the external device T. The external device T is, for example, a computer, but may be a control unit provided in an electronic device such as a vending machine or a ticket vending machine. The data acquisition unit 111 notifies the enlargement unit 112 of the character data and the enlargement ratio data acquired from the external device T.

The enlargement unit 112 converts the pixel values of the nine pixels included in the area composed of 3 pixels × 3 pixels included in the character data into a correction area of 3 cells × 3 cells larger than the area for each pixel. Create enlarged data by allocating. One cell is composed of a plurality of pixels × a plurality of pixels. The enlargement unit 112 determines the size of each of the nine squares included in the correction region based on the enlargement ratio indicated by the enlargement ratio data. Determining the size of a cell corresponds to determining the number of pixels contained in the cell. In the present embodiment, as described above, the enlargement ratio is 9 times, and one cell is composed of 3 pixels × 3 pixels. In the printing apparatus S, the enlargement unit 112 has nine squares according to the enlargement ratio by determining the size of each of the nine squares included in the correction region based on the enlargement ratio in this way. A correction area can be created.

As will be described later, the enlargement unit 112 allocates the pixel value of each of the plurality of pixels to the center cell of the plurality of cells in the correction area, and then the pixel value of the cell adjacent to the cell is the corresponding pixel in the character data. The pixel value of the pixel adjacent to is set to.

As will be described later, the enlargement unit 112 assigns the pixel value of each of the plurality of pixels to the center cell of the plurality of cells in the correction area, and then the second pixel value surrounded by the plurality of cells of the first pixel value. The pixel value of the cell is changed to the first pixel value. The first pixel value is, for example, a value indicating black color. The second pixel value is, for example, a value indicating white color. In the printing apparatus S, by creating the enlarged data in this way, the enlargement unit 112 can prevent the pixel of the second pixel value from being included in the plurality of pixels of the first pixel value indicating the character. can.

The enlargement unit 112 acquires character data and enlargement ratio data from the data acquisition unit 111, and determines the size of each of the nine cells included in the correction area based on the enlargement ratio indicated by the acquired enlargement ratio data. Then, the enlargement unit 112 has a determined mass size in which the pixel values of the nine pixels included in the region composed of 3 pixels × 3 pixels included in the acquired character data are larger than the region. Enlarged data is created by allocating to the correction area of 3 squares x 3 squares. Then, the enlargement unit 112 notifies the selection unit 113 of the created enlarged data.

The selection unit 113 selects a matching pattern that matches the pattern indicated by the pixel values of the 9 squares included in the correction area from a plurality of matching patterns stored by the storage unit 12 described later. Specifically, the selection unit 113 acquires enlarged data from the enlarged unit 112, and stores a pattern indicated by the pixel values of 9 cells included in the correction area of 3 cells × 3 cells of the acquired enlarged data, which will be described later. Compare with a plurality of matching patterns stored in 12. Then, the selection unit 113 selects a matching pattern that matches the pattern indicated by the pixel value of the 9 squares included in the correction area from the plurality of matching patterns stored by the storage unit 12 described later. Then, the selection unit 113 notifies the correction unit 114 of the selected matching pattern.

The correction unit 114 creates print data by correcting the pixel values of a plurality of correction regions included in the enlarged data by a correction method corresponding to the matching pattern selected by the selection unit 113. The correction method includes the following correction methods. Details of each correction method will be described later.

For example, the correction unit 114 sets the pixel value of the area on the side of the plurality of cells to the first pixel value with respect to the diagonal line of the cells of the second pixel value in contact with the plurality of cells of the first pixel value included in the correction area. to correct. Correcting the pixel values of the plurality of correction areas included in the enlarged data in this way by the correction unit 114 is referred to as a first diagonal correction in the present specification.

Further, the correction unit 114 may, for example, have a first cell of the second pixel value that is in contact with a plurality of cells of the first pixel value included in the correction area, and a second pixel value that is in contact with the first cell and the cell of the first pixel value. With respect to the diagonal line of the rectangular region composed of the second square, the pixel value of the region on the side of the plurality of squares is corrected to the first pixel value. Correcting the pixel values of the plurality of correction areas included in the enlarged data in this way by the correction unit 114 is referred to as a second diagonal correction in the present specification.

Further, in the correction area, for example, the correction unit 114 may include two squares having the first pixel value adjacent to each other and one square having the second pixel value included in the same row or column as the two squares. The rectangular area composed of The pixel value is corrected to the second pixel value. Correcting the pixel values of the plurality of correction areas included in the enlarged data in this way by the correction unit 114 is referred to as a third oblique correction in the present specification.

The correction unit 114 acquires a matching pattern selected by the selection unit 113 from the selection unit 113, and prints by correcting the pixel values of a plurality of correction areas included in the enlarged data by a correction method corresponding to the acquired matching pattern. Create data. The correction method includes the first diagonal correction, the second diagonal correction, and the third diagonal correction described above. Then, the correction unit 114 notifies the print unit 115 of the created print data.

In the printing apparatus S, as described above, the correction unit 114 prints by performing the first oblique correction, the second oblique correction, or the third oblique correction according to the matching pattern selected by the selection unit 113. It is possible to make it difficult to create a step on the edge of the character. There are more cases where the first oblique correction and the second oblique correction are performed than when the third oblique correction is performed. In the case of the first diagonal correction and the second diagonal correction, the square of the first pixel value is not corrected, but in the case of the third diagonal correction, the square of the first pixel value is also corrected. Since the first oblique correction and the second oblique correction are easy to make fine corrections, they are easy to handle even when the enlargement ratio is small.

The printing unit 115 prints print data. Specifically, the printing unit 115 acquires print data from the correction unit 114 and prints the acquired print data.

The storage unit 12 includes a ROM (Read Only Memory) and a RAM (Random Access Memory). The storage unit 12 stores a program executed by the control unit 11.

The storage unit 12 stores matching data. The matching data is data in which a plurality of matching patterns having different pixel value patterns of a plurality of cells included in an area of 3 cells × 3 cells are associated with the above-mentioned correction method. The details of the matching pattern will be described later.

As described above, the printing apparatus S according to the present embodiment sets the pixel values of the nine pixels included in the area composed of 3 pixels × 3 pixels included in the character data to 3 squares × 3 larger than the area. Correcting the pixel values of a plurality of correction areas included in the enlarged data by the correction method corresponding to the matching pattern selected by the enlargement unit 112 that creates the enlarged data and the selection unit 113 by allocating to the correction area of the mass. It has a correction unit 114 and a correction unit 114 for creating print data. Therefore, in the printing apparatus S, it is possible to make it difficult for a step to be generated at the edge of the printed character. Further, in the printing device S, since one correction area is composed of 9 squares of 3 squares × 3 squares, the processing amount of the processing for selecting a matching pattern is suppressed, and the edges of the printed characters are smoothed. can do.

[Operation flowchart of printing device S]
FIG. 2 is a flowchart showing the operation flow of the printing apparatus S. FIG. 3 is a diagram showing an example of character data to be printed.

FIG. 4 is a diagram showing an example of a plurality of correction regions. FIG. 5 is a diagram showing an example of the first stage data created by the enlarged unit 112. FIG. 6 is a diagram showing an example of the second stage data created by the enlarged unit 112. FIG. 7 is a diagram showing an example of enlarged data.

FIG. 8 is a diagram showing an example of a plurality of matching patterns stored by the storage unit 12. 8 (a) to 8 (j) are diagrams showing an example of a matching pattern associated with the first oblique correction. 8 (k) to 8 (t) are diagrams showing an example of a matching pattern associated with the second oblique correction. 8 (u) to 8 (y) are diagrams showing an example of a matching pattern associated with the third oblique correction.

First, the data acquisition unit 111 acquires character data to be printed (S11). As shown in FIG. 3, for example, character data of 10 vertical pixels × 7 horizontal pixels is acquired. The numbers shown on the vertical axis and the numbers shown on the horizontal axis in FIG. 3 are coordinates for indicating the position of each pixel. Next, the data acquisition unit 111 acquires the enlargement ratio data (S12). Next, the enlargement unit 112 determines the size of each of the nine cells included in the correction region based on the enlargement ratio indicated by the enlargement ratio data (S13). In the present embodiment, as described above, the enlargement ratio is 9 times, and one cell is composed of 3 pixels × 3 pixels.

Next, the enlargement unit 112 allocates the pixel values of the nine pixels included in the area composed of 3 pixels × 3 pixels included in the character data to the correction area of 3 cells × 3 cells larger than the area. As a result, enlarged data is created (S14).

Specifically, the enlargement unit 112 prepares a plurality of correction areas (FIG. 4). The area surrounded by the solid line shown in FIG. 4 is one correction area. One square is an area surrounded by a solid line or a broken line. One correction area has 3 vertical cells × 3 horizontal cells. The numbers shown on the vertical axis and the numbers shown on the horizontal axis in FIG. 4 are coordinates for indicating the position of the square. Then, the enlargement unit 112 allocates the character data to be printed of 10 vertical pixels × 7 horizontal pixels shown in FIG. 3 to 3 vertical correction areas × 3 horizontal correction areas for each 3 vertical pixels × 3 horizontal pixels (). FIG. 5).

For example, the pixel values of nine pixels included in the area composed of 3 vertical pixels × 3 horizontal pixels (8 to 10 vertical and 1 to 3 horizontal) in the character data shown in FIG. 3 are shown in vertical 3 in FIG. Allocate to one correction area x three horizontal correction areas (vertical 22 to 30, horizontal 1 to 9). In this case, the pixel value of the central cell in each of the nine correction areas corresponding to the nine pixels is changed to the first pixel value. Therefore, in the three vertical correction areas × three horizontal correction areas (vertical 22 to 30, horizontal 1 to 9) shown in FIG. 4, the square of the second pixel value at the position of (vertical, horizontal) = (23, 8) The pixel value is changed to the first pixel value (FIG. 5).

Then, for example, the pixel values of nine pixels included in the area composed of 3 vertical pixels × 3 horizontal pixels (8 to 10 vertical and 2 to 4 horizontal) in the character data shown in FIG. 3 are shown in the figure. Allocate to three vertical correction areas x three horizontal correction areas (vertical 22 to 30, horizontal 4 to 12) shown in 4. In this case, as described above, the pixel value of the central cell in each of the nine correction regions corresponding to the nine pixels is changed to the first pixel value. Therefore, (vertical, horizontal) = (23,8), (26,11), (23, in the three vertical correction areas × three horizontal correction areas (vertical 22 to 30, horizontal 4 to 12) shown in FIG. The pixel value of the square of the second pixel value at the position of 11) is changed to the first pixel value (FIG. 5).

In this way, the enlargement unit 112 sequentially shows the pixel values of the nine pixels included in the region composed of the vertical 3 pixels × horizontal 3 pixels included in the character data shown in FIG. 3 in FIG. 3 By allocating to the correction area of square × 3 squares, the data of the first stage shown in FIG. 5 is created.

Next, the enlargement unit 112 inherits the adjacent pixels of the original image and inherits the pixel values of the cells of the second pixel value between the vertical, horizontal, and diagonal spaces of the cells of the first pixel value in the plurality of adjacent correction regions. Is changed to the first pixel value (FIG. 6). For example, in the data of the first stage shown in FIG. 5, the vertical columns of a plurality of squares ((vertical, horizontal) = (26,11), (23,11)) of the first pixel value in a plurality of adjacent correction regions. The pixel values of the cells ((vertical, horizontal) = (25, 11), (24, 11)) of the plurality of second pixel values in between are changed to the first pixel values. In this way, the enlargement unit 112 changes the pixel value of the square of the second pixel value between the vertical, horizontal, and diagonal spaces of the squares of the first pixel value in the plurality of adjacent correction regions to the first pixel value. By doing so, the data of the second stage shown in FIG. 6 is created.

Next, the enlargement unit 112 changes the pixel value of the square of the second pixel value surrounded by the plurality of squares of the first pixel value to the first pixel value. Specifically, the enlargement unit 112 changes the pixel value of the square of the second pixel value in which the adjacent upper and lower squares and the adjacent left and right squares are the pixels of the first pixel value to the first pixel value (FIG. 7). For example, in the data of the second stage shown in FIG. 6, a plurality of upper and lower cells ((vertical, horizontal) = (25,10), (23,10)), which are cells of the first pixel value, and the first pixel. The second pixel value cell ((vertical, horizontal) = (24, 10) surrounded by a plurality of left and right cells ((vertical, horizontal) = (24, 9), (24, 11)), which are value cells. )) Change the pixel value to the first pixel value. In this way, the enlargement unit 112 creates the enlarged data shown in FIG. 7 by changing the pixel value of the pixel of the second pixel value surrounded by the plurality of pixels of the first pixel value to the first pixel value. do.

Next, the selection unit 113 selects a matching pattern that matches the pattern indicated by the pixel values of the 9 squares included in the correction area from the plurality of matching patterns stored in the storage unit 12 (S15).

For example, the correction area (vertical 25 to 27, horizontal 10 to 12) shown in FIG. 7 matches the matching pattern shown in FIG. 8 (c). Therefore, in this case, the selection unit 113 selects the matching pattern shown in FIG. 8C. The matching pattern shown in FIG. 8 (c) is associated with the first oblique correction described later. Further, for example, the correction areas (vertical 16 to 18 and horizontal 7 to 9) shown in FIG. 7 match the matching pattern shown in FIG. 8 (l). Therefore, in this case, the selection unit 113 selects the matching pattern shown in FIG. 8 (l). The matching pattern shown in FIG. 8 (l) is associated with the second oblique correction described later.

Next, the correction unit 114 creates print data by correcting the pixel values of a plurality of correction regions included in the enlarged data by a correction method corresponding to the matching pattern selected by the selection unit 113 (S16).

FIG. 9 is a diagram showing an example of the correction method. 9 (a) and 9 (b) are diagrams showing an example of the first oblique correction. 9 (c) and 9 (d) are diagrams showing an example of the second oblique correction. 9 (e) and 9 (f) are diagrams showing an example of the third oblique correction. FIG. 10 is a diagram showing an example of print data.

As shown in FIG. 9A, when the matching pattern selected by the selection unit 113 is a matching pattern associated with the first diagonal correction, the correction unit 114 has a plurality of first pixel values included in the correction region. The pixel value of the region on the side of the plurality of cells is corrected to the first pixel value with respect to the diagonal line of the cell of the second pixel value in contact with the cell (FIG. 9 (b)).

As shown in FIG. 9C, when the matching pattern selected by the selection unit 113 is a matching pattern associated with the second diagonal correction, the correction unit 114 has a plurality of first pixel values included in the correction area. With respect to the diagonal line of the rectangular region composed of the first cell of the second pixel value in contact with the cell of the first pixel value and the second cell of the second pixel value in contact with the cell of the first pixel value and the cell of the first pixel value. The pixel value in the area on the side of the square is corrected to the first pixel value (FIG. 9 (d)).

As shown in FIG. 9E, when the matching pattern selected by the selection unit 113 is a matching pattern associated with the third diagonal correction, the correction unit 114 has the adjacent first pixel value in the correction region. A rectangular area composed of two cells and one cell having a second pixel value contained in the same row or column as the two cells is formed by the first pixel with respect to the diagonal line of the rectangular area. The pixel value of the region on the other side of the square of the value is corrected to the first pixel value, and the pixel value of the region opposite to the diagonal line is corrected to the second pixel value (FIG. 9 (f)).

In this way, the correction unit 114 creates print data (FIG. 10). Next, the printing unit 115 prints the print data (S17). In the printing device S, as described above, since one correction area is composed of 9 squares of 3 squares × 3 squares, the edge of the printed character is suppressed while suppressing the processing amount of the processing for selecting the matching pattern. Can be smoothed.

[Modification example]
FIG. 11 is a diagram showing a modified example of the correction method. 11 (a) and 11 (b) are views showing a modification of the first oblique correction. 11 (c) and 11 (d) are views showing a modification of the second oblique correction. 11 (e) and 11 (f) are diagrams showing a modification of the third oblique correction.

In the present embodiment, the enlargement ratio is 9 times, and one cell is composed of 3 pixels × 3 pixels, but the present invention is not limited to this. The size of the central square (main square) and the eight squares around the central square (adjacent square) out of the nine squares differs depending on the magnification. The main square is square, but the adjacent square may be rectangular.

For example, the enlargement ratio may be 16 times. In this case, the sizes of each of the nine cells included in the correction area are as shown in FIGS. 11 (a) to 11 (f). That is, of the nine cells included in the correction area, the central cell is composed of 6 vertical pixels × 6 horizontal pixels, and the upper and lower two cells adjacent to the central cell are 5 vertical pixels × 6 horizontal pixels. It is composed of pixels, and the two left and right squares adjacent to the center square are composed of 6 vertical pixels x 5 horizontal pixels, and the four diagonal squares adjacent to the central square are 5 vertical pixels. × It is composed of 5 horizontal pixels.

[Effect of Printing Device S According to This Embodiment]
The printing device S according to the present embodiment has a data acquisition unit 111 for acquiring character data to be printed, and pixels of nine pixels included in an area composed of 3 pixels × 3 pixels included in the character data. It has an enlargement unit 112 that creates enlarged data by allocating a value to a correction area of 3 cells × 3 cells larger than the area.

Further, in the printing device S, the storage unit 12 and the storage unit 12 store a plurality of matching patterns in which the patterns of the pixel values of the plurality of cells included in the area of 3 cells × 3 cells are different from each other and the correction method in association with each other. It has a selection unit 113 for selecting a matching pattern that matches the pattern indicated by the pixel value of 9 squares included in the correction area from a plurality of matching patterns to be stored. Further, the printing device S has a correction unit 114 that creates print data by correcting pixel values of a plurality of correction regions included in the enlarged data by a correction method corresponding to the matching pattern selected by the selection unit 113, and printing. It has a printing unit 115 for printing data.

The printing device S according to the present embodiment sets the pixel values of the nine pixels included in the area composed of 3 pixels × 3 pixels included in the character data to 3 cells × 3 cells larger than the area. By allocating to the correction area of, the enlargement unit 112 that creates the enlarged data and the correction method corresponding to the matching pattern selected by the selection unit 113 correct the pixel values of the plurality of correction areas included in the enlarged data. It has a correction unit 114 for creating print data. Therefore, in the printing apparatus S, it is possible to make it difficult for a step to be generated at the edge of the printed character. Further, in the printing device S, since one correction area is composed of 9 squares of 3 squares × 3 squares, the processing amount of the processing for selecting a matching pattern is suppressed, and the edges of the printed characters are smoothed. can do.

Although the present invention has been described above using the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist. be. For example, all or part of the device can be functionally or physically distributed / integrated in any unit. Also included in the embodiments of the present invention are new embodiments resulting from any combination of the plurality of embodiments. The effect of the new embodiment produced by the combination has the effect of the original embodiment together.

S ... Printing device 11 ... Control unit 111 ... Data acquisition unit 112 ... Enlargement unit 113 ... Selection unit 114 ... Correction unit 115 ... Printing unit 12 ... Storage unit T・ ・ ・ External device

Claims (9)

A data acquisition unit that acquires character data to be printed, and
Enlarged data is created by allocating the pixel values of 9 pixels included in the area composed of 3 pixels × 3 pixels included in the character data to the correction area of 3 cells × 3 cells larger than the area. Enlarged part and
A storage unit that stores a plurality of matching patterns in which the pixel value patterns of a plurality of cells included in an area of 3 cells × 3 cells are different from each other and a correction method in association with each other.
A selection unit that selects a matching pattern that matches the pattern indicated by the pixel values of the 9 squares included in the correction area from the plurality of matching patterns stored in the storage unit.
A correction unit that creates print data by correcting pixel values of a plurality of the correction regions included in the enlarged data by a correction method corresponding to the matching pattern selected by the selection unit.
A printing unit that prints the print data,
Printing equipment with. In the enlarged portion, after the pixel value of each of the plurality of pixels is assigned to the central cell of the plurality of cells in the correction area, the pixel value of the cell adjacent to the cell becomes the corresponding pixel in the character data. Make it the pixel value of the adjacent pixel,
The printing apparatus according to claim 1. The enlarged portion assigns the pixel value of each of the plurality of pixels to the central cell of the plurality of cells in the correction area, and then the cell of the second pixel value surrounded by the plurality of cells of the first pixel value. Change the pixel value to the first pixel value,
The printing apparatus according to claim 1 or 2. The data acquisition unit further acquires enlargement ratio data indicating the enlargement ratio when printing the character data, and further acquires the enlargement ratio data.
The enlargement unit determines the size of each of the nine cells included in the correction region based on the enlargement ratio indicated by the enlargement ratio data.
The printing apparatus according to any one of claims 1 to 3. The correction unit corrects the pixel value of the region on the side of the plurality of cells to the first pixel value with respect to the diagonal line of the cells of the second pixel value in contact with the plurality of cells of the first pixel value included in the correction area. do,
The printing apparatus according to any one of claims 1 to 4. The correction unit includes a first cell of the second pixel value that touches a plurality of cells of the first pixel value included in the correction area, and a second pixel value that touches the first cell and the cell of the first pixel value. With respect to the diagonal line of the rectangular region composed of two squares, the pixel value of the region on the side of the plurality of squares is corrected to the first pixel value.
The printing apparatus according to any one of claims 1 to 4. In the correction area, the correction unit is composed of two cells having a first pixel value adjacent to each other and one cell having a second pixel value included in the same row or column as the two cells. In the rectangular area, the pixel value of the area on the side of the other square of the first pixel value is corrected to the first pixel value with respect to the diagonal line of the rectangular area, and the pixel value of the area opposite to the diagonal line is corrected. To the second pixel value,
The printing apparatus according to any one of claims 1 to 4. Computer runs,
The step to acquire the character data to be printed and
Enlarged data is created by allocating the pixel values of 9 pixels included in the area composed of 3 pixels × 3 pixels included in the character data to the correction area of 3 cells × 3 cells larger than the area. Steps to do and
By referring to matching data in which a plurality of matching patterns having different pixel values in an area of 3 squares × 3 squares and a correction method are associated with each other, the pixel values of 9 squares included in the correction area from the plurality of matching patterns. Steps to select a matching pattern that matches the pattern shown by
A step of creating print data by correcting pixel values of a plurality of the correction areas included in the enlarged data by a correction method corresponding to the selected matching pattern.
How to create print data. On the computer
The step to acquire the character data to be printed and
Enlarged data is created by allocating the pixel values of 9 pixels included in the area composed of 3 pixels × 3 pixels included in the character data to the correction area of 3 cells × 3 cells larger than the area. Steps to do and
By referring to matching data in which a plurality of matching patterns having different pixel values in an area of 3 squares × 3 squares and a correction method are associated with each other, the pixel values of 9 squares included in the correction area from the plurality of matching patterns. Steps to select a matching pattern that matches the pattern shown by
A step of creating print data by correcting pixel values of a plurality of the correction areas included in the enlarged data by a correction method corresponding to the selected matching pattern.
A program to execute.

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