Prepress job layout tutorial
CorelDRAW is a powerful and comprehensive software package with various functions such as graphics drawing, image processing, web page production, printing and typesetting, cartoon animation and so on.
One of the most widely used areas of CorelDRAW in China is the preliminary work applied to the printing and typesetting of publications, commonly known as prepress work. Although this is only a part of CorelDRAW's functions, because we are dealing with other tasks, we will also habitually call other software, such as processing images, we will immediately use Photoshop, Web pages will use Dreamweaver, animation will use Flash Wait; so here, I will take a small card as an example to briefly introduce from the typesetting of the graphics to the drawing of the die pattern.
Imposition work:
Before printing and typesetting, we must first analyze some of the work objects, such as what paper to use, what printing machine to prepare, what process to use, whether to carry out any art processing or any special process, etc. In order to save space, I will save it.
1. Open the CorelDRAW software, the system will automatically create a "graphic 1" file.
2. Select the fifth place from the toolbox on the left-the rectangle tool, draw a rectangle in the blank space next to the paper specified by the system, and the size is not limited. Then change its size to 125 x 185mm on the property toolbar (the finished size will be 120 x 175mm after being folded in half, see Figure 1)
3. Use the selection tool to select the rectangle you just drawn, hold down the Ctrl key and drag the rectangle to the left with the mouse. When a rectangular frame that is the same as the original rectangle appears on the screen, hold down the left button and press the right button, that is, on the left side of the original rectangle A rectangle similar to it appears. (See Figure 2)
4. Put a processed picture in the right frame, and add the company information text in the lower half of the left frame (see Figure 3). Form a card style.
5. Select all the objects on the card and press Ctrl + G or the "Group" item under the "Arrangement" menu. Group each object to make it an object. In order to facilitate the operation of subsequent projects.
6. Select the selection tool, draw a rectangle in a blank place, and adjust the size to 546 x 787mm (positive folio size, which means paper, as shown in Figure 4).
7. Draw another rectangle in the box on the folio, with a size of 526 x 777mm (5mm hemorrhage is left on the upper and lower sides, 15mm bite is left on the left, and 5mm is left on the right, which means this is a printed version The core is the effective printing area). Select both rectangles, select "Align and Distribute" in the "Arrangement" menu, check "right" for horizontal items and "middle" for vertical items, and align the two rectangles ( As shown in Figure 5).
8. After the previous step, the right sides of the two rectangles are close together, but we require a distance of 5mm, so we need to adjust. If it is adjusted manually, its position is not accurate enough. Select the "Pick" tool, when Baozheng does not select any object, adjust the fine-tuning distance on the property toolbar to 5mm, as shown in Figure 6, and then select the rectangular frame of 526 x 777mm, click the left arrow, this The rectangular frame is separated from another rectangular frame by 5mm, so that there is also a bleeding position of 5mm on the right side of the paper.
9. Because the finished size of the card is 120 x 175mm after folding, plus the bleeding position, the full size of the design draft is 250 x 185mm. Now our next step is to put the card on the paper. Select the grouped cards, then select the inner frame on the paper, select "Alignment and Distribution" in the "Arrangement" menu, check "Left" for the horizontal items, and "Up" for the vertical items. Align in the upper left corner; select the card, copy and paste, and then adjust the rotation value to 180 in the property bar to flip it, so that the pattern parts of the two cards are opposite; adjust the fine-tuning distance to 250mm, paste the card after selection, click the right direction Arrows, two cards become pattern to pattern arrangement, this method is called "head-to-head" imposition (Figure 7).
Because printing will often cause expansion and contraction of the paper due to the relationship between temperature and humidity, in order to minimize the occurrence of inaccurate registration due to this reason, we should try to place the parts with complicated patterns or colors close to the bite. Bit. Once the first line above is lined up, then call the "Transform" option in the "Arrange" menu, in the pop-up dialog box, set the vertical distance to the card's height value of 185mm, because we want to move it down, So set it to -185mm, then select two cards and press "Apply to Reworked Objects", each time you press it, a pair of cards will be copied down, and the position is very accurate (Figure 8). After three presses, four pairs of eight cards appeared on the page, and the paper could no longer be arranged.
At this point, the imposition is complete. The specification is to spell eight-mode / positive folio. Although there is some wasted paper, this situation is inevitable. If we want to reduce the waste of paper, we can use pen and paper budget before imposition, such as this example The size of the printed surface of the card after the eight-piece format is 500 x 740mm, while the facing size of positive paper is 546 x 787mm, the facing size of large paper is 597 x 889mm, and the facing size of special paper is 444 x 634mm, obviously the waste of using other paper seems to be greater, so it is appropriate to use positive paper.
Drawing of the knife mold diagram:
The completion of the imposition does not mean the end of the typesetting work, we have another very important work-the drawing of the knife pattern.
After the printing process is completed, each print must be divided into finished products. For example, the imposition example above, after finishing the printing, it must be divided into eight finished cards. It is impossible to use scissors to cut when dividing, we have to produce another version-knife template. Of course, in general printing factories, you don't need to make the knife mold yourself. You only need to draw the knife mold line, and then send it to the knife mold factory. The knife mold factory will make the knife plate, and then take it back to the beer machine to go to the beer. Press it, and then remove the paper edge and put it neatly to deliver it to the customer.
The drawing of the die line is done on the basis of the printed version, in fact, the actual size of the finished product is drawn on a layout containing a bleeding site (no color is required), let's start the die line The drawing:
1. The finished card size we set above is 120 x 175mm after folding, and 250 x 185mm (including bleeding) after unfolding.
2. Use the rectangle tool to draw a rectangle with a size of 239 x 175mm. Select the rectangle and then select the card in the upper left corner of the printing plate, press the "C" key to align vertically, press the "E" key to align horizontally, the rectangle is in The center of the card. Adjust the fine-tuning distance value to 0.5mm, select the rectangle just drawn, and click the right arrow to move it to the right by 0.5mm (because the rectangle has done a reduction action, so if you do not move 0.5mm to the right, both sides will appear Each is 5.5mm bleeding, but our goal is to have 5mm bleeding on the right and 6mm bleeding on the left). Select the Bezier curve tool, draw a line with a vertical height of 175mm, and align it vertically to the right of the rectangle, adjust the fine-tuning value to 120mm, select the vertical line, click the left arrow, the vertical line will divide the rectangle into the right 120mm, 119mm on the left, as shown in Figure 9. Here, the front is set to 120mm, and the back is set to 119mm, because the back is beyond the front due to inaccurate registration after the beer press on the beer machine. After 1-2mm reduction, it will not worry about the finished product. There is a defect of open back (that is, the paper on the back can be seen from the front of the card surface).
3. Select the rectangle (the border is set to a solid line, indicating that it needs to be cut) and the vertical line (the border is set to a broken line, which means that only the indentation is not cut) and the group is an object, and the "deformation" dialog box in the "arrangement" is called , Set the vertical value to -185mm and the horizontal value to 0 in the "Position" item, and then click "Apply to Remanufactured Objects" three times, the card die line on the left is basically completed; select the four newly created rectangles , Set the horizontal value of 249mm in the "Transformation" dialog box, and set the vertical item to 0, and then click "Apply to Reworked Objects" to copy another four die lines; combine the eight card patterns with the previous settings The positioning rectangular frame of the bite and bleeding position was removed, resulting in only eight rectangular frames remaining on the paper, as shown in Figure 10.
At this point, the printing plate and the knife template are completed. The follow-up work is to produce a film. Normally, four color films of cyan, magenta, yellow, and black are printed and an additional knife die is added. Need another movie. Because film production and plate making belong to the work of the printing room, the prepress work ends here.
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