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مواصفات الملفات المقبولة
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High quality PDF files with bleed and crop marks (preferred file format)
MAC OS and Windows are both acceptable
Adobe In-Design up to CS6 or Adobe Exchange File (IMDL File)
NOTE: Quark PASSPORT is acceptable only as .pdf
Illustrator up to date
Corel as PDF
Save Photoshop files as PSD, PDF or .JPG. Color mode should be CMYK, B&W* or Grayscale, 300 to 400 dpi, 1/4″ bleed – please indicate that a bleed has been included. Rasterizing all text. RGB files do not separate properly so please convert to CMYK.
* Black and White Photoshop images are actually Bitmap Color Mode and should be 600 to 1000 dpi.
Bar Codes — Machine readable (often OCR), preprinted vertical bars used extensively in labeling for automated materials, handling, inventory control, and point of sale terminals. A multitude of systems exist, usually not compatible with each other and the respective reading devices.
Aqueous Coating — Any water based coating, i.e., water is the vehicle, as opposed to an oil or organic solvent. Latex wall paint and most paper coatings are aqueous coatings. Can refer specifically to an over coating or varnish on the printing press that is water based, as opposed to an oil or organic solvent based.
Bleed — An illustration that extends to one or more of the edges of a printed piece; bleed illustrations are usually printed 1/8 beyond the planned trim edge(s). Term applied to a lithographic ink pigment which dissolves in the fountain solution and causes it to be tinted. The discoloration of dyed pulp and paper due to the removal of color by liquid, thereby making it susceptible to staining other materials it contacts.
Caliper — The thickness of a sheet of paper measured under specified conditions, generally expressed as one thousands of an inch (0.001), mils or points; measured with an instrument called a micrometer or caliper. Dot Gain- The gain in size of the printed dot, as a result of the ink, paper, printing pressure, pre-press operation, or any combination of these. Since the dots printed are larger then planned, this can be a defect evidenced by darker tones and / or different hues.
Dummy — A preliminary layout or presentation to show the style, form, size or shape of a printing job. Four Color Process- The printing of a full color picture or drawing by the use of four separate process printing inks: yellow, magenta, cyan, and black.
Hickeys — When foreign material sticks to the printing press blanket or plate in an image area, it interferes with the transfer of ink to or from the blanket surface. The printed imperfection created can appear as a hickey (a white area around a dark centre); can be caused by dirt on or around the press, dried ink skin, paper or coating particles, etc.
Offset Printing — Also known as indirect printing. The method by which the printing plate is removed from the point of transfer of the printing ink to the paper to be printed, generally by means of a resilient blanket or roll; the resilient blanket or roll actually makes the impression on the paper, thus offsets the ink. Unless stated otherwise, can also be specific to the offset lithography or planographic printing process, using a resilient blanket to minimize wear on the plate by the paper being printed.
On Demand Printing — A concept for improved delivery of short run color printing utilizing digitized printing. Direct digitized printing, such as in LASER printing or where each print of the image is created from digitized information on an intermediate substrate, like a photoreceptor. There may not be intermediate or pre-press operations, preparatory to printing. Two such direct digitized printing process are termed Indigo (LASER, liquid toner, and single print head) and Xeikon (LED, dry toner, and multiple print heads). Indirect digitized printing, such that the offset lithographic plate or master is created directly from the source of the digitized information, and that plate thus created is used to produce the copy. From the printers standpoint, this is direct digital imaging, but of the plate for conventional offset printing, and thus indirect digitized printing. One company is imaging the plates mounted on the printing press. Plate- Depending on the printing process, the means by which the image area is separated from the non-image area; the image carrier. Ream- Sheet count of paper (500 sheets for most fine papers).
Screen — The ruling (usually expressed as lines per inch, i.e., 120 lpi, 133 lpi, 150 lpi or dots per inch i.e., 120 dpi, 133 dpi, 150 dpi) used to determine the dots per unit area in developing tonal values in the printed piece. Up to the point of dot gain, the higher the screen, the finer the lines per inch or dots per inch, and the greater the fineness of detail in the printed piece.
Spot Color — Premixed, semi or fully opaque printing inks used for exact color match, as in a corporate logo (examples: Coca-Cola red or John Deere green). Used in place of trying to match exact colors by the combination of 3 or 4 process colors. Can also add visual impact and reduce the process ink costs. Also called match color.
Tack — Refers to the internal stickiness (cohesion) of an ink; a measurement of the resistance to splitting of an ink film between two separating surfaces; tack is necessary in lithographic inks to insure adequate film splitting at the thin ink film thicknesses necessary for this planographic process. High tack does stress the paper surface. If that film splitting stress is sufficient, the paper surface can be disrupted, with pick resulting. Tack is an ink characteristic that can be measured by instrumentation (such as with an inkometer); other ink fluid characteristics are described by viscosity and length.
Trim — Indicates the maximum width of finished paper which can be made on a particular machine. To remove from the edges of a sheet or roll, excess or unneeded paper. The excess of paper allowed around a printed piece for bleed and / or handling and later trimming.
Trapping — The term used to describe the acceptance of transfer of an ink by the surface being printed. Wet trapping refers to the acceptance of an ink film by a previously printed wet ink surface; dry trapping is of course the acceptance by the dry paper or printed ink film surface.
Varnish — An oil used as the vehicle in printing inks which has been bodied by heat (or chemically), or by the addition of gums, resins, or other materials. A thin coating as in applied to a finished printed job for protection or appearance.
VOC — An abbreviation for volatile organic compounds. Since these are OSHA and EPA regulated type materials, they have become of concern in both inks (evaporative solvents that might be used in heat – set, web offset inks) and fountain solutions (alcohol). Alternative materials and processes are being examined for these products so necessary to printing.
Work and Turn — Printing the second side of a sheet of a paper by turning it over from left to right or right to left, using the same edge of the paper as the gripper or lead edge.