Category Archives: Raster Images
If you have transformed your bland old paint job into a unique or business advertising vehicle wrap, I would like to congratulate you. You have now successfully put your car into a new realm that will have all the people on the streets looking your way. Having a vinyl wrap is different then a paint job and requires a little different care.
1) Automatic car washes are now out of the question. The high pressure water and bristles from the machine will cause damage to your wrap and costly repairs. You should hand wash your car with a sponge, and a low pressure or mist of water. If you have to use a high pressure water system be sure to stand back at a distance and not to hold the stream on one point of the car, doing so could cause a tear in your vinyl.
2) When using wax, be sure to hand wax your car and DO NOT use a buffer. There are different kinds of wax, be sure to use one that is suitable for vinyl such as turtle wax. If you go to get your vehicle detailed be sure that they also use a wax that is vinyl friendly. Waxing your vehicle will keep your wrap clean and polished and also make it easier to deinstall of the wrap, leaving little to no adhesive behind.
3) Avoid parking under trees for any long periods of time. Sap from some trees can damage your wrap causing you more money.
4) If you have window perf it should be waxed as well. It will give your perf a longer life span and help the lamination. Do not use high pressure on the window perf as well, it can also cause damage.
Be sure to protect your wrap, it is an investment and bad care can cause to money down the drain.
DPI, known as Dots Per Inch, is the resolution of a raster image or scanned image. Printer and scanner resolutions are also measured in dpi. Your typical desktop laser printer will print at 300-600 dpi. At laser Sharp Sign Design we use a HP Laser Printer, with a very high dpi it gives us the ability to create smoother and cleaner products. The poducts final quality of printing depends on the resolution of the image being used to print, called the bitmap or scan.
Take a 400 dpi image and increase the size in a graphics program. When you do this, you have only made the tiny pixel squares bigger. This creates whats called the “jaggies”, by making the image bigger it gave you a jaggy edge. When dealing with raster images know that in order to “blow it up” you must have a high resolution picture or be able to transvert the image into a vector file using programs such as Coreltrace or Eurovector.
The only way for you to accuratly reproduce a raster image file is to have graphics software to keep track of the exact location and color of each pixel in the whole collection of pixels, thats a lot of information. File size becomes a big issue when scanning and creating raster images. When the file sizes star to get bigger it becomes an issue because big files make your computer processor and hard drive work overtime. Your typical 2″ by 3″ 150 dpi black and white raster logo is about .07 megabytes or less then 70k in file size. That same file saved as a 300 dpi 24 bit raster image logo might be 100 times larger, over 7 megabytes. In order to transfer big files (over 1 megabyte) you must have high speed internet connection on both ends for timely uploads and downloads.
Common raster image formats are JPEG (Joint Photographics Expert Group), PCX (Paintbrush), TIFF (Tag Interleave Format), BMP (Windows Bitmap), PNG (Portable Network Graphics), CPT (Corel PhotoPaint), and PSD (Adobe PhotoShop).