Plane output (printing) notes (below)

6. Lithography principle Printing is divided into several types of printing methods, lithography, letterpress printing, gravure printing, etc. China's books and newspapers and packaging printing currently use letterpress printing, and foreign letterpress printing has been replaced by offset printing. Compared with letterpress printing and gravure printing, lithographic printing technology has its unique features and is summarized as follows:
1) The practical application of the natural law of oil and water immiscibility in lithography. Lithography uses the laws of water and oil incompatibility to achieve the purpose of printing. At present, lithography is still inseparable from water
2). The lithographic printing plate, the blank part and the graphic part utilizes the law of water and oil immiscibility almost on the same plane of the printing plate, through the technical treatment, forms the lipophilic hydrophobicity on the printing plate of the same plane. The graphic part and the blank part of the hydrophilic oleophobic. In the printing process, the wetting mechanism first applies a uniform amount of water to the blank portion of the printing plate, and the blank portion does not absorb the ink, and then the ink is used to make the graphic portion absorb an appropriate amount of ink, and the graphic is completed by the embossing mechanism. Transfer the copy to achieve the purpose of printing.
3). The lithographic printing method is an indirect printing. The pattern on the printing plate is "formal". The ink on the lithographic printing plate is not directly transmitted to the paper, but is transferred to the blanket cylinder first. The ink is then transferred to the printing material, so the graphic is "informal" indirect printing. The rubber blanket wrapped on the surface of the blanket has two characteristics: First, it has better hydrophobic and oleophilic characteristics, it can fully transfer ink, and restrict the transmission of moisture. Second, the blanket has elasticity and can be larger. In the case of printing pressure and compressive deformation, the imprint of the solid surface enlargement rate is small.
4). Dot fineness - The color of the flat-printing products is ever-changing, beautiful, and the formation of its color is made up of network dots and color inks, and the dot fineness is the main one. It is guided by the light color theory. The overlapping, parallel means of the dots are based on the theory that the three primary colors or the three primary colors plus black (four colors), through the photo separation or electronic color separation, decompose the color of the picture into yellow, magenta, cyan, black, etc. with different reticulation angles. Color version, and then use four-color printing plate, overprinting overlap to reproduce numerous levels and colors, to obtain very colorful art replicas.
5). Multi-color printing, wide range of printing format - lithographic printing can print monochrome text version, but mainly multi-color printing. The printing format can be large or small (four-on-two-sheets) and can also be printed with multi-colored products on the screen and on the field. The finished product is flat and colorful, which is not comparable to other printing methods. The graphic part and the blank part of the lithographic printing plate are on the same plane. The two parts have completely opposite properties for the water and oil intimacy. The graphic part is oleophilic and hydrophobic, while the blank part is hydrophilic and oleophobic. The role of the graphic part is to adsorb the ink to reject the fountain solution. During the printing process, the blank part is first moistened by the fountain solution, and then the graphic part is coated by the ink, and then the graphic part of the ink is transferred to the paper. Lithography is based on the principle of immiscibility between oil and water, transferring the graphic on the plate to the paper.

7. Simplify the EPS image If you want to say the final reason, in the PostSript file, the overly complicated path is the culprit that makes the file not print correctly. Too many nodes with paths or smooth settings will increase the complexity of the file, causing the laser printer or imagesetter to crash, resulting in fatal "Limitcheck" or "VMError" PostSript errors. In particular, when sending files to high-resolution output devices, you should split complex paths and set high smoothness in Illustrator or Macromedia, or use the eeHand instruction to simplify the path. When using Adobe Streamline strokes, use path simplification to reduce path complexity. Use high tolerance readings in Photoshop to reduce the number of nodes when the selection becomes a clipped path. Do not nest EPS images in other EPS files. Like this: Several EPS images are imported into an Illustrator file, stored as EPS, placed on a QuarkXPress page, stored as an EPS, and placed into another QuarkXPress file. If you are lucky, that file happens to print. However, as each layer is put into the EPS, the chance of success will be less and less. If you have to convert a full-page QuarkXPress EPS to a file that can be dot-patched by Photoshop. Let Photoshop turn the file into a bitmap and save it as Photoshop's EPS or TIFF. Neither of these two formats adds extra layers to the PostSript language.

Smooth Gradient Gradations using mathematical operations by QuarkXPress and Illustrator will work well over short distances of a few inches, but PostSript's limitations may lead to banding if you try to make the entire page a slight gradient. Make gradients into bitmaps (using Add Noise) in Photoshop and type them into other applications. However, you can't use Photoshop to handle layers made in Illustrator. Compared to gradients created directly in the Photoshop palette, Illustrator files processed by Photoshop do not produce the ideal intermediate gradient.

9. Use good fonts Many output centers do not want to see TrueType words. PostSript has become a standard. TrueType usually has the same word name as the corresponding PostSript word, causing conflicts. TrueType must be manually downloaded into the RIP of the imagesetter. This is a time-consuming task. Contact the export center in advance. Do not use font commands to create bold or italic effects. It is best to select the desired font effect directly from the application font menu. If the font does not have the desired bold or skewed effect and the font command is used, the MAC will forge a bold or italic effect for each character - but this is only on the screen. If it is output on the printer, the final printing effect looks as if it has not been used at all. So what's the effect of using the underline? Don't use fonts that do not have the effect that the font itself has. If you are using a beautiful serif or fine-brushed font (Bodoni is a good example), and the size of the word is set to be very small, do not separate the words. Otherwise, even slight misalignment of the plates will cause overprinting of the most sensitive parts.

10. Color Conversion Before converting the file to output, convert the RGB color to CMYK. Of course, RGB colors look great on the screen, and many professionals prefer to use RGB mode, but do you know? What does the image of these RGB modes look like after being color-separated or printed (many previous publishing software couldn't even separate RGB images). Before the images are placed into the layout software or sent to the output center, they are converted into CMYK format (in Photoshop or other software that can do this conversion). To make sure that you did not specify a spot color as a separation, or vice versa, assign a separation as a spot color. One such mistake may destroy a film. If your time is precious and you spend money on your own film, this is definitely not what you want. Be sure to define the colors you have defined in your typesetting software. Use the same name as used in image processing software. Otherwise, the layout software will treat the separations defined in Illustrator and FreeHand as spot colors. QuarkXPress and PageMaker can now recognize this color and put in the color list any color names contained in the EPS file placed into it. Therefore, this danger is not too great, but here I still mention it to you.


11. Using numbers Now there are two ways to determine the size and position of page elements in each typesetting software. One method is clicking the perceptual method of dragging the mouse, and the other is an objective method of entering numbers from various dialogs and control panels. To make sure that the exact width of a box is exactly one and one-half inch, the only correct way to do this is to enter 1.5" in the width column instead of using the head or aligning the guides and dimensions.

12. Set the layout page to the actual size In the previous, less than satisfactory period, the prepress workstation and imagesetter cannot record the bleeding beyond the page range. If you want to get the right bleeding, you have to change the page size in the layout software to adjust the actual page size and bleeding. This must have a larger page size in order to manually draw and place cutting lines, which is easy to make mistakes. Today's prepress equipment is no longer hampered by these restrictions (the imagesetter now can record a larger format and use a wider film). Most printing devices recommend setting the file size to the actual size of the page, allowing the application software to automatically generate correct positioned cutting lines.


13. Organizing the document to talk about this may be redundant for the veteran, but it will no longer be necessary for the novice. In addition to carrying all the image files used in the file, you also need to bring the PostScript word lattice words (screen display) and outline words (printer) used in the file to the output center. Now that most typesetting software is similar to the QuarkXPress Collection and Output Document command, you can get a detailed report about the file and automatically copy the file to a folder, floppy disk or SyQuest disk. If the output center has a higher configuration, they will have Adobe fonts so that you don't need to bring the words together.

14. Check the files mentioned in steps 10 and 13, which can be done and which can't be done. Are you confused? In fact, it is a very simple check. The checks should include: checking each page element that was missed, colors and PostSript errors that were not properly defined. The inspection tool is simply like the Lepton Technology`s documentDoctor for QuarkXPress or Adobe`s CheckList for PageMaker, and the sophisticated ones like Systems of Merritt`s LaserCheck or Acquired Knowledge`s Dowmload Mechanic. Panther Proof or Adobe PrePrint Pro can perform low resolution output screen previews so that you can check and resolve common Postscript errors before exporting.

15. Print the file

Proofing output files, to indicate separation. If you can't find a color printer around you, then the color annotation method used in the past is very useful. It also needs a large number of separations, which is very useful for hollowing out and overprinting!

16. Make a call to the Outgoing Center. Don't contact the Outgoing Center in the last step of the workflow. Contact at the beginning. By contacting the person responsible for the final output, many output problems can be avoided. Do not think that the files that look good on the MAC screen must meet the requirements of the output center and how good it is after printing. Be sure to find out the resolution (number of lines per inch), ink, and paper used for printing. Then set the corresponding number of network cables in the application software. When you have a negative film, you should explain it to the output person, otherwise the output person will give you a positive film as usual. Time is valuable to every publisher. Is the secret of several of the above graphic experts saving you some time? Hopefully, through the introduction of the above articles, we can bring some inspiration to you. The original output is not terrible.



Source: PACK.CN

Wooden Wardrobe

A wardrobe or armoire or almirah is a standing closet used for storing clothes. The earliest wardrobe was a chest, and it was not until some degree of luxury was attained in regal palaces and the castles of powerful nobles that separate accommodation was provided for the apparel of the great. The name of wardrobe was then given to a room in which the wall-space was filled with closets and lockers, the drawer being a comparatively modern invention.From these cupboards and lockers the modern wardrobe, with its hanging spaces, sliding shelves and drawers, evolved slowly.

Throughout the chronological changes in the form of the enclosure, it has more or less retained its preset function as a place to retain a king`s robe. The word has gained coinage over successive generations as an independent store for among others, preserving precious items for a ruler like gold, well highlighted in King Edward I of England's times. It is also a simple patio where clothes are hung from metal bars or tucked inside utility racks running from up to down. The modern wardrobe differs in one respect from the historical one for its triple partitioning: there are two linear compartments on either side with shelves as well as a middle space made up of hanging pegs and drawers, the latter being a latter-day addition, besides a clothes` press in the higher central space on level with a person`s chest.

Additionally, an armoire is a wardrobe that is wider than a grown adult's arm span, while a wardrobe is smaller.

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