Pre-press graphic output inspection should pay attention to the following questions: 2. The effects of CorelDraw files should be separated or indexed before output. Otherwise, the results are really unpredictable. In addition, single black (k100) shadow please turn four-color (C100M100Y100K100), otherwise the single dark shadow will make other color version hollow, and it will be difficult to see when printed out. 3, PageMaker file link map RGB mode and the use of JPEG compressed EPS file. Both output will be black and white. The only solution is to convert the RGB mode to CMYK in Photoshop and convert the JPEG-compressed EPS file to normal ASCII or binary EPS. 4, CorelDraw, put PSD format files, please merge their layers. If the picture in the PSD format is rotated, or the TIF picture has redundant channels, the picture may be damaged when the output is output. The picture should be re-mapped in CorelDraw once. 5, CorelDraw application "pattern fill" (CorelDraw10/11/12 called "pattern fill"), after rotation or deformation, the pattern cut position will change, please note when you make up (solution is to transfer the map) . 6, CorelDraw text typesetting, if the text is copied from WORD or Notepad, need to remove double-byte spaces (using WORD's search / replace), otherwise prone to "bad words" and the situation of running. 7, CorelDraw9/10 paragraph text turn curve skills: in the need to turn the paragraph of the curve on the text painted a rectangle, press Alt + F3 call out filter dock window, select the "transparency" filter, the "ratio" to 100, Click "Freeze" (this is the most critical step), "Remove Face", and then click "Apply". The text of the paragraph will turn into a curve. 8. In PageMaker, please change the RGB link graph to CMYK, otherwise the output will be grayscale. 9. When using composite fonts in PageMaker, when delivering the output center, please specify the corresponding Chinese and English fonts. 10, the line width is generally not less than 0.076mm (sometimes because of convenience in the CORELDRAW hook map, the default line is changed to 0, the output forgot to change back ...). Less than 0.04mm is basically not printable. 11. Black (K100) defaults to overprinting (except bitmaps). If overprinting is required, please specify. 12. The Word document text is easy to move, please provide the sample draft when posting. 13, some fonts will be turned into a "hollow word" after the curve, such as the body _GB2312, imitation Song _GB2312, Han Ding black Jane, Han Dingmei Black Jane, etc., please use with caution. In addition, some places where English characters turn after the curve will be hollowed out, but also pay attention. A blackboard (also known as a Chalkboard) is a reusable writing surface on which text or drawings are made with sticks of calcium sulphate or calcium carbonate, known, when used for this purpose, as chalk. Blackboards were originally made of smooth, thin sheets of black or dark grey slate stone. Wooden Chalkboard,Wooden Blackboard,Wooden Sandwich Board,Chalkboard Sign Jinan Tri-Tiger Technology Development Co., Ltd , https://www.tigerwoodproduct.com
1, where bleeding is not required, as well as a single color corner.
A blackboard can simply be a board painted with a dark matte paint (usually black, occasionally dark green).Matte black plastic sign material (known as closed-cell PVC foamboard) is also used to create custom chalkboard art.Blackboards on an A-frame are used by restaurants and bars to advertise daily specials.
A more modern variation consists of a coiled sheet of plastic drawn across two parallel rollers, which can be scrolled to create additional writing space while saving what has been written. The highest grade blackboards are made of a rougher version porcelain enamelled steel (black, green, blue or sometimes other colours). Porcelain is very hard wearing, and blackboards made of porcelain usually last 10–20 years in intensive use.
Lecture theatres may contain a number of blackboards in a grid arrangement.The lecturer then moves boards into reach for writing and then moves them out of reach, allowing a large amount of material to be shown simultaneously.
The chalk marks can be easily wiped off with a damp cloth, a sponge or a special blackboard eraser usually consisting of a block of wood covered by a felt pad. However, chalk marks made on some types of wet blackboard can be difficult to remove. Blackboard manufacturers often advise that a new or newly resurfaced blackboard be completely covered using the side of a stick of chalk and then that chalk brushed off as normal to prepare it for use.