28. Since the RGB graph is better than the CMYK graph, the color is more beautiful. Can the RGB graph be output directly? What are the consequences of doing so?
A: Since the color gamut of RGB is larger than CMYK, some colors are displayed on the screen. However, four-color inks cannot be printed. To know the consequences, just try. Due to the differences in RIP, RGB images may only have black images on the separation film, no images on other color versions, and it may be that the information (dot) of the images on the four-color film is exactly the same, that is, the equivalent grayscale image. Although some distribution software or RIP can convert RGB to CMYK, it is best to use scan software or Photoshop to perform the mode conversion.
29. The color picture is stored in the DCS format. There are pictures when printing the black and white manuscript, but there is no picture on the output film. Why is that?
A: After the picture is stored as the DCS format, there will be five files in the second half.
30. What is RIP? Why do you like software RIP now?
A: RIP is an abbreviation for RasterProcessing. It refers to a software or hardware card that interprets Postscript code as a bitmap image in a photo system. It is generally called a raster image processor. It plays an important role in the color publishing system. Its function is to quickly interpret the prepared page as a command that can control the output of the laser recorder. It can automatically convert text, graphics, and images in the page. Into the digital lattice information, and then use these information to control the output device to record, so that its work is "off" or "on."
The upgrading of hardware RIP requires complex processes and a long time, and it cannot adapt to the rapid development of software technology. Software RIP is widely adopted due to its rapid update, high processing quality, high speed, and display of post-processing results. And a software RIP can drive multiple imagesetters at the same time, the network function is strong.
31, why not set the resolution in the typesetting and graphics software?
A: The typesetting graphics software is an object-oriented software. Expressions of characters and graphics are expressed in an algorithm language. Objects produced are independent of the resolution. They are output at the output device resolution. The resolution of the output device is high, and the resolution of the graphic output of the production page is high. Therefore, graphics software and layout software do not set the resolution. The images imported by the layout and graphics software are read from the original image when output. This is related to the resolution of the original image.
32, CorelDraw text in several types?
A: CorelDraw divides the text into two different types. One is art text and the other is paragraph text. Although both texts are created using text tools, they have different characteristics. With more graphic objects, more special effects can be applied to text art texts; paragraph texts can use more text formats. Based on the different characteristics of these two types of text, they can be used for different purposes respectively. If only a small amount of text is needed or more formatting is applied to the text, such as short titles and descriptions, the text can be used. Need to deal with a large number of text applications more formatting, such as newspapers, brochures, etc., can use paragraph text.
Inkjet and photo output requirements
Inkjet printing generally refers to outdoor advertising screen output, which outputs a large screen, such as the number of billboard screens next to the highway is the output of the inkjet printer. Output models are: NRU SALSA 3200, Choi Shen 3200, etc., generally the maximum width of 3.2 meters. The media used in inkjet printers is generally advertising cloth (commonly known as light box cloth). The ink uses oily ink. In order to ensure the persistence of the picture, the color of the screen is generally a bit darker than the color on the display. Its actual output image resolution generally only needs 30~45DPI (according to the printing requirements), the actual size of the screen is relatively large, there are more than 100 square meters of area.
The photo is generally used in the home, and the screen it outputs is generally only a few square meters in size. For example, the small advertisement screen used by manufacturers at the exhibition. Output models such as: HP5000, the maximum width of 1.5 meters. The media used in the photo machine is generally PP paper and light sheet, and the ink uses water-based ink. After the output image is finished, the film and the sampan plate are counted as finished products, and the output resolution can reach 300-1200 DPI (different in different models), and its color is relatively saturated and clear.
Below we briefly describe some simple requirements for making and exporting images in inkjet and photo.
1, size:
The size of the spray image is the same as the actual required screen size. Unlike printing, it does not require bleeding. After the inkjet company has left blank edges after outputting the screen, the general situation is to leave 10CM at the edge of the net screen. As shown in the picture, you can negotiate with the inkjet output company and leave the number of sides to use to make the buttonhole. The price is calculated per square meter, so the screen size is in centimeters.