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PDF
In the past years PDF has become the standard file format in the printing industry. A PDF can be created through most design software suites. If not, you can use Adobe Acrobat or Adobe Acrobat Distiller to convert your file to PDF. There are also many inexpensive applications available today to create PDF files. By using PDF we eliminate the risk of embedded fonts, overly compressed images, missing picture links and many other issues. At Integrated Design Solutions we highly recommend you to consider PDF as your preferred file format.
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File formats we can use:
- Acrobat PDF
- Tiff
- JPG w/ Maximum quality
- Any Rasterized/Bitmapped 300dpi file
- *Microsoft Publisher Documents
- Adobe Illustrator w/ links and fonts
- Adobe In Design w/ links and fonts
- QuarkXpress w/ links and fonts
- Adobe Photoshop (flattened)
- EPS with fonts converted to outlines/paths
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| * Ms.Publisher is not recommended |
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File formats we do NOT recommend:
Even though we work with Ms. Publisher files as well as other Microsoft applications we do not recommend using them. Publisher is simply not a professional design software. Among other issues, it has low-quality JPG compression, text outputs as "4 color black" which can lead to misregistration, and its files take a long time to rip.
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Vector and Bitmap
Object-oriented graphics (Vectors)
A software technology that uses mathematical points, based on "vectors" (information giving both magnitude and direction), to define lines and shapes, these points being the "objects" referred to. As distinct from a graphic shape as an object (an "object" in computer programming is a database of mathematical formulae). The data for each shape is stored in these points, which in turn pass information from one to another on how the paths between them should be described — as straight lines, arcs, or Bezier curves. The quality of the line between each point is determined entirely by the resolution of the output device — a line produced by an imagesetter at 2,400dpi will be very much smoother than the same line output on a LaserWriter at 300dpi or when viewed on a monitor. Software like Adobe Illustrator and Macromedia Freehand work with vectors.
Raster Images (Bitmap)
In computer graphics, a raster graphics image or bitmap, is a data structure representing a generally rectangular grid of pixels, or points of color, viewable via a monitor, paper, or other display medium. Raster images are stored in image files with varying formats. A bitmap corresponds bit-for-bit with an image displayed on a screen, generally in the same format used for storage in the display's video memory, or maybe as a device-independent bitmap. Bitmap is technically characterized by the width and height of the image in pixels and by the number of bits per pixel (a color depth, which determines the number of colors it can represent).
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Bitmap Image Resolution
Resolution
Resolution is the number of dots available to represent graphic detail in a given area: on a computer screen it's the number of dots(pixels) per linear inch(ppi) -today's majority of computer monitors show only 72 ppi- on an output device (Printer-Press) it's the number of dots printed in a linear inch(dpi). The resolution of an output device influences the clarity of detail and tonal range of the image. That's why you should use 300 dpi for your images. There's no need to increase the resolution to more than 300 dpi because most of today's presses are not capable of printing at higher resolutions so all you achieve by increasing resolution is having a larger file size which causes your system to work slower. A 300 dpi (or higher) image is often called "hi-res" and images less than 300dpi are commonly called "low-res". |
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| Important: NEVER copy and paste images from the Internet, they are low-resolution (72 dpi) |
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Colour
RGB and CMYK
RGB: Video technology (computer monitors, scanners, digital cameras, etc.) use the additive RGB model, it transmit varying proportions of red, green and blue light which we percieve as different colors.
CMYK: In commercial printing, translucent cyan, magenta and yellow inks are printed on a page. A fourth ink, black, is used to deepen the shadows and to print true black text and lines. These inks absorb and reflect light, using the subtractive color model.
It is very important to understand that the colors you see on your your monitor will look different viewed in other monitors as monitors aren't usually calibrated or they are calibrated differently and most certainly will differ from the printed page because as explained before, they use two different color models. |
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This is a simulation of how colors look on your screen... |
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...and how will they look after printing on a press: |
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| Always set your image mode to CMYK. This way you will achieve better color-consistency (the colors you see on your monitor will be closer to the colors on the printed page.) |
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Spot colors and Process colors
Spot colors
Spot colors are printed with premixed ink on a printing press. Each spot color is reproduced using a single printing plate. A spot color is printed at 100% is a solid color and has no dot pattern. A tint is a lightened spot or process color and is created by printing smaller halftone dots of the base colors. This is also called screening the color. |
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| The orange on the left is assigned a spot color and can be matched on the press very close to the original as you can see in the image on the right. |
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| Important: NEVER use different names for the same Spot Color: it will create extra plates. |
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| Whenever you need to match a specific color (for example on a logo), or for 1 or 2 color jobs, you should use Spot Colors. |
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Pantone
Spot Colors are also commonly called "PMS" or "Pantone" color since © Pantone inc. has been a world-renowned authority on color for more than 40 years and it is used worldwide. The "Pantone Formula Guide" is a tool for graphic designers, pre-press professionals and printers. It is used to select, specify and match 1,114 solid PANTONE Colors. Ink formulations are provided along with RGB and CMYK icons under colors that can be effectively simulated on-screen and in CMYK. |
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| Process Colors: Process colors are reproduced by printing overlapped dots (halftone screens) of cyan, magenta, yellow and black ink to simulate a large number of different colors. |
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| Enlarged view of the same orange separated into CMYK (left), harder to match on a printing press (right). |
| The advantage of using Process Colors is that is usually cheaper and it's the only way to print full color photographs on a commercial press. |
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| This image shows how a Process color Job is separated into four plates (C-M-Y-K). |
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| Rich Black |
| Rich black is achieved by setting the color at about 40% Cyan, 40% Magenta, 40% Yellow and 100% Black. You can use rich black when you have large and solid black areas or title text (over 30pt.) to prevent the color looking gray. However, for small text or thin lines you SHOULD NOT use rich black , as it may (and will) make the text look blurry and muddy. ALWAYS use 100% Black and 0% Cyan, Magenta and Yellow for text smaller than 12pt. and also for thin lines and outlines. |
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| The image above shows the difference between Rich Black and 1-Color Black. |
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Fonts
Choosing the type of font to work with is the first step in making sure the type on your pages displays and prints correctly. The two main font standards are PostScript Type 1 and TrueType. Competing font standards make selecting fonts an important decision: the same typeface design maybe available in a PostScript font and a TrueType font. The visual characteristics of one font standard differ slightly from another. Because of this difference, using one type of font for displaying and proofing your work and then using a different font for printing can cause unpleasant surprises like different letter spacing and line endings. PostScript fonts are the industry standard for imaging to any PostScript output device. PostScript fonts are PostScript language-based outlines—object-oriented vector graphics—that can be scaled to any size, and still remain sharp and smooth on any platform, or output device.
TrueType fonts work well with non-PostScript and PostScript output devices. The disadvantage of using TrueType fonts when printing to a PostScript printer is that the font must be converted to a PostScript outline; the quality of the resulting font depends on the quality of the conversion. TrueType fonts retain their quality when scaled, but may not support all typographical features available for example in PageMaker. Important: Use the specific weight or style of the font instead of assigning the weight or style through the character style menu to avoid inconsistencies when submitting fonts and also when printing.
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Picture Links and Fonts
Most layout applications, like Adobe InDesign or QuarkXpress, organize projects in Document-Picture Links-Fonts. The Document is the main file that the application creates, it's often called the native file. Every time a user imports or places a picture in the document the program creates a "link" to it. That's why it's very important to keep your pictures organized in folders and to use naming conventions so when you submit your files to the printing company, there won't be "missing links". NEVER change the location of your folders or files before burning a CD: it "breaks" the links.
All the fonts that you use in your documents are installed in your system, but not all of them will be installed in the printing company's system.
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You must include all the fonts and pictures used when you submit a job to a commercial printer. At Integrated Design Solutions we recommend you to use "convert font to outlines" (for some applications is paths or curves instead of outlines) to avoid font issues, but remember: after converting the fonts to outlines you won't be able to edit the text anymore, so ALWAYS save a copy of the file before doing this.
Important: Empty text boxes will also ask for a font when the file is opened on the printer's computer so make sure to check for empty text boxes. |
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Paper
Paper is produced by the amalgamation of fibers, typically vegetable fibers composed of cellulose, which are subsequently held together by hydrogen bonding. While the fibers are usually natural in origin, a wide variety of synthetic fibers may be incorporated into paper as a way of imparting desirable physical properties. The most common source of these kinds of fibers is wood pulp from pulpwood trees. Vegetable fiber materials such as cotton, hemp, linen, and rice are also used.
Paper is often characterized by weight. The weight assigned to a paper is the weight of a ream, 500 sheets, of varying "basic sizes", before the paper is cut into the size it is sold to end customers. For example, a ream of 20 lb, 8½ x 11" paper weighs 5 pounds, because it has been cut from a larger sheet into four pieces. In the United States, printing paper is generally 20 lb, 24 lb, or 32 lb at most. Cover stock is generally 68 lb, and 110 lb or more is considered card stock.
Coated paper is paper which has been coated by an inorganic compound to impart certain qualities to the paper, including weight and surface gloss, smoothness or ink absorbency and usually to protect it from uv-light.
Important: Know what paper you will print on when creating your file. Paper affects the way colors look. There is a big difference in color between coated an uncoated paper.
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Bleeds, Trim and Safe area
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ALWAYS specify the final size of the page and create your document page size accordingly.
Bleeds
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| If the page has images that extend all the way to the edge of the page, you are dealing with "bleeds". In this case, the background objects must be extended at least 1/8" to ensure that when trimming the ink coverage extends to de edge of the paper. |
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Enlarged view of the image before trimming... |
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Enlarged view of the image after trimming... |
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| Safe Area: |
| Place objects or text at at least 1/4" inside the edges of the FINISH size. This avoids important objects or text getting trimmed during the finishing process. |
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Proofing
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You MUST ALWAYS supply a hard copy proof to the printer.
1- Print the proof in "composite" mode to have a color proof.
2- Print in "separations" mode to check images and text will print correctly when plates are generated later in the printing process.
The proof should be consistent to the file you are submitting. If possible, the proof should be at 100% in size. If your document's final size is larger than your home printer's sheet size you can tile the document and paste the sheets together.
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| Integrated Design Solutions Preflight Checklist |
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- The document size you use must be the same dimensions as the "final size"
- Place your important content far from the edges of the page
- Use "bleeds" when there are images at the edge of the page
- All you images must be CMYK and 300dpi
- Spot colors must be converted to CMYK for a full color job
- Use "Black Only" for small text and lines
- Supply all fonts or convert them to outlines
- Supply all picture links
- Proof read your job, run a "spelling check", check for "empty" text boxes
- ALWAYS provide a hard copy of your work as a proof
- Do not submit files or folders that aren't used in the job
- If you need to submit content larger than 4MB do not email, use our upload page
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