If your stencil can hold the size of dot you specify, then the index separation will work perfectly for your final output on the screens. That means, for example, that a 180-dpi index dot is 1/180th of an inch (0.005 in.). The size of an index dot is the same as one pixel at the resolution of the original file. For index printing, it is useful to know what size of dots you can print. To split up a design into an index separation, take your prepped source image (Figure 3) and then size it appropriately in Photoshop. The index style of separation is fast and relatively simple, but it does have limitations. If you’re provided an image that has an artistic look to it-particularly one that has a texture or rough style-then you can separate it quickly with an index color table in Photoshop. The resulting layer was then bumped down in opacity so that it would blend well with the original image (Figure 2). This layer was then color-merged using layer-blending modes to adjust it, all the while considering the original image underneath. Here, color-combining involved selecting from the alpha channel, creating an extra layer, and filling the new layer with the color from the selection. In the example shown in Figure 1, it was a matter of combining all of the warm and cool colors into red or blue hues so the graphic could be separated onto two screens instead of six. Once you have this extra channel, you can add to it or adjust it to include or exclude areas of the image that you wish to color-combine. You’ll see that the colors will flow much better into the proper channels that you have selected.Ĭolor crunching can be as simple as corralling the hues that are similar in an image (Figure 1) and then using the Color Range tool in Adobe Photoshop to isolate those colors and save them in an extra alpha channel. They can make the difference between making or missing a deadline.Ĭan you make the image more separation-friendly by breaking it up into colors? Herding color hues together-also known as color crunching-can take a bit of time up front, but it will pay off significantly when it comes time to separate the design. The methods described below are fast because they essentially do a big chunk of the work for you. This discussion focuses on three effective ways to do just that. Time is of the essence, which means you need to be able to crank out good separations without delay-separations that are production-friendly and compatible with your entire workflow. While these demands aren’t too tough to meet when the print runs involve one color, the heat is definitely on for shops that handle multicolor and process-color work. GARMENT SCREEN PRINTERS continue to feel increasing pressure from clients to turn jobs around in record time.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |