KR100465328B1 - photocopying apparatus having poster printing function - Google Patents

Abstract

A copying apparatus having a poster printing function is disclosed. The copying apparatus includes a scanning unit for reading an image of an original and outputting image data corresponding thereto, the number of divisions for dividing the image into predetermined sections of horizontal and vertical, and the size ratio of overlapping areas between the divided images. A key input unit providing a function of inputting an overlap ratio, an image processing unit for dividing and enlarging and outputting image data output from the scanning unit based on the interval division and a predetermined enlargement ratio, and a division and enlargement in the image processing unit A magnification ratio is determined by using a printing unit for printing each of the image data on a plurality of printing sheets and the division ratio and overlap ratio received through the key input unit, and the image data is determined according to the division number and the expansion ratio. And a control unit controlling the image processing unit and the printing unit to divide and enlarge and print. Accordingly, the poster printer function can be performed without limiting the enlargement ratio.

Description

Photocopying apparatus having poster printing function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying apparatus, and more particularly, to a copying apparatus having a poster printing function for enlarging and copying each equally divided image by n * n-dividing an image of an original.

One of the functions for copying an image of an original is an enlarged copy function for copying an image of an original enlarged from its original size.

1 is a view showing an enlarged copy of a document by the prior art.

As shown, the A4 size is set to A3 size and the enlargement ratio is set to 144% to enlarge the image of the original according to the set enlargement ratio and print on one sheet of paper.

As described above, the conventional copying apparatus has a problem in that the enlargement ratio is limited due to the size of the paper to be printed, because the enlarged copy of the image of the original on a single sheet of paper.

In order to solve the above problems, an object of the present invention is to provide a copying apparatus for alleviating the limitation of the enlargement ratio.

1 is a view showing a magnified copy of a document by the prior art,

2 is a block diagram schematically showing the configuration of a copying apparatus having a poster printing function according to the present invention;

FIG. 3A is a view showing 2 x 2 divided copies of an original according to the present invention;

FIG. 3B is a view showing originals copied by 2 * 2 division and 5% overlap ratio setting according to the present invention;

Fig. 3C is a diagram showing originals copied by 2 * 2 division and 10% overlap ratio setting by the present invention.

<Description of the symbols for the main parts of the drawings>

210: control unit 220: scan unit

230: storage unit 240: key input unit

250: display unit 260: printing unit

270: image processing unit

In order to achieve the above object, a copying apparatus having a poster printing function according to the present invention comprises a scanning unit for reading an image of an original and outputting image data corresponding thereto, and for copying the read image data onto paper. In the apparatus, it is possible to divide the image of the document into horizontal and vertical predetermined intervals, and set interval divisions for enlarged copying, and to receive the set interval division and copy start commands as key inputs and control signals corresponding thereto. A key input unit for applying to; When the copy start command is input from the key input unit, the image data of the original input from the scan unit is divided into the section divisions set by the key input unit, and the divided image data is enlarged and printed on the respective sheets. A control unit for outputting a control signal; An image processing unit which horizontally and vertically divides and enlarges the image data output from the scan unit based on a control signal of the controller and outputs the divided image by the set interval division; And a printing unit which prints each of the divided and enlarged image data on the respective sheets based on a control signal of the controller.

The key input unit further includes an overlap ratio setting key for setting a ratio of the size of the overlapped portion to the size of the divided original.

Preferably, the storage unit for temporarily storing and outputting each of the divided and enlarged image data output from the image processing unit; And a display unit for displaying the information on the set interval division, the overlap ratio, and the enlargement ratio.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the present invention will be described in detail.

2 is a block diagram schematically showing the configuration of a copying apparatus having a poster printing function according to the present invention.

A printing technique for dividing an image of one original onto several sheets of paper and then obtaining each enlarged sheet of paper, followed by one enlarged image, is commonly referred to as a poster printing function.

As shown, a copying apparatus having a poster printing function according to the present invention includes a control unit 210, a scanning unit 220, a storage unit 230, a key input unit 240, a display unit 250, a printing unit 260 And an image processing unit 270.

The scan unit 220 reads an image of an original according to a control signal of the control unit 210 and outputs the image as data.

The key input unit 240 selects and sets the section division to copy by dividing the original into one of n * n divisions (for example, 2 * 2, 3 * 3, and 4 * 4), and sets the section division information. The key input signal corresponding to the control unit 210 is applied. The key input unit 240 sets an overlap ratio, which is a ratio of overlapping areas of the portions in which the divided images are in contact with each other, and applies a key input signal corresponding to the set overlap ratio information to the controller 210. The overlap ratio is the size of the overlap area with respect to the size of the divided image, which is selected and set within the range of about 0% to 30%. The overlap area is an area to be bonded to form one enlarged image after each divided image has been printed, and may be set only on the right and lower sides of the paper or in all directions of left, right, up and down.

The control unit 210 controls to divide the image of the document into a set section division based on information corresponding to the section division and the overlap ratio applied from the key input unit 240 so that the overlapping printing is set on each sheet by the overlap ratio. Output the signal.

The image processing unit 270 receives an image of the original output from the scanning unit 220 according to a control signal of the control unit 210, divides and enlarges the image of the original based on the set interval division and the overlap ratio. . In this case, when the set interval division is n * n division and the overlap ratio of left, right, up and down is m%, the enlargement ratio R is determined by Equation 1 below.

That is, for example, when the interval division is 3 * 3 division and the overlap ratio is 5%, the enlargement ratio is 300/110 = about 273%, and when the overlap ratio is set to 0%, the enlargement ratio is 300%.

The display unit 250 displays information on the section division, information on the overlap ratio, and the enlargement ratio set by the key input unit 240.

The storage unit 230 temporarily stores each divided image data output from the image processing unit 270 and sequentially outputs the divided image data to the printing unit 260 according to the control signal of the control unit 210.

The printing unit 260 prints image data sequentially output from the storage unit 230 on each sheet according to the control signal of the control unit 210.

3A, 3B, and 3C will be described in more detail with respect to an original copied by the present invention.

FIG. 3A is a view showing 2 x 2 divided copies of an original according to the present invention.

As shown, the A-shaped image on the left is the image of the original, and the right is the image of the divided-copy original when the division number is set to 2 * 2 and the overlap ratio is set to 0%. At this time, the enlargement ratio is 200%.

Fig. 3B is a view showing originals copied by 2 * 2 division and 5% overlap ratio setting on the left, right, top and bottom sides according to the present invention.

As shown, the A-shaped image on the left is the image of the original, and the right side is the image of the divided copied original when the division number is set to 2 * 2 and the overlap ratio is set to 5%. The enlargement rate at this time is about 182%.

Fig. 3C is a diagram showing originals copied by 2 * 2 division and 10% overlap ratio setting by the present invention.

As shown, the A-shaped image on the left is the image of the original, and the right is the image of the divided-copy original when the division number is set to 2 * 2 and the overlap ratio is set to 10%. At this time, the enlargement ratio is about 167%.

By adhering the overlap areas of each of the divided copied sheets to each other, one image enlarged to 167% can be obtained.

On the other hand, when the division number is set to 4 * 4 and the overlap ratio on the top, bottom, left and right sides is set to 5%, one image enlarged to 367% can be obtained. In addition, when the overlap ratio is set at 5% only on the lower side and the right side, one image enlarged to 381% can be obtained.

According to the copying apparatus having a poster printing function according to the present invention, it is possible to divide an image of an original into predetermined sections of horizontal and vertical, and to enlarge and copy each divided image for printing.

Claims (7)

A copying apparatus for reading an image of an original and outputting image data corresponding thereto, wherein the copying apparatus prints the read image data on paper. A key input unit for providing a division ratio for dividing the image into predetermined sections of horizontal and vertical and an overlap ratio which is a size ratio of overlap regions overlapped between the divided images; An image processing unit for dividing, enlarging and outputting the image data output from the scanning unit at the interval division and a predetermined enlargement ratio; A printing unit for printing respective image data divided and enlarged by the image processing unit on a plurality of printing papers; The image processor and the image processor are configured to determine the enlargement ratio by using the interval division and the overlap ratio received through the key input unit, and to divide and enlarge and print the image data according to the interval division and the enlargement ratio. A copying apparatus having a poster printing function, comprising: a control unit controlling a printing unit. The method of claim 1, wherein the key input unit A copying apparatus for setting a division number for equally dividing the image into n * n horizontally and vertically: Where n is a natural number. The method of claim 2, wherein the image processing unit When the number of divisions is set to n * n, the image is divided into n sections horizontally and vertically, respectively, and the poster printing function is enlarged n times of each of the divided sections. Copying equipment. delete The method of claim 3, wherein the image processing unit And copying and enlarging the image such that the overlap area is printed on at least one of upper, lower, left and right edges of the printing paper. The method of claim 5, wherein the image processing unit When the overlap ratio is set to m%, a copying apparatus having a poster printing function, the image is enlarged according to an enlargement ratio expressed by the following formula: In the above formula, R is an enlargement ratio, n is a natural number set as the interval fraction, and m is a natural number set as the overlap ratio. The method of claim 6, A storage unit which stores data of each of the divided and enlarged images output from the image processing unit; And a display unit for displaying information on the set interval division, overlap ratio, and the enlargement ratio.