Some Tips You Should Know About Design
The grayscale files which are converted to CMYK have a color shift in the final print. That shift may be green or yellow.
Always check the CMYK amount of your grayscale in your final document. If there are other values other than K in your grayscale image, there is a chance that the color will different.
To eliminate all values other than K, use your Channel Mixer (adjustment layer) in Photoshop, then click "Monochrome" and adjust accordingly.
Low resolution files may be printed as is or will be placed on hold until we receive new files, slowing your turn-around. The minimum resolution is 300 dpi.
Any transparency issue can be resolved before saving your file. To prevent this, never use shadows, glows, or any other transparency (image or otherwise) on top of a spot color. Always convert your spot color to CMYK and flatten before sending.
When sending artwork, please do not send extra files, like proofs or samples, because they might get printed. Only send the files you need printed.
Rich black is an ink mixture of solid black, 100% K, with additional CMY ink values. This results in a darker tone than black ink alone. If you print black alone as 100% K, the resulting black may not be as dark as you might like.
We recommend using C 75 M 68 Y 65 K 90 This will
give you a deep, dark, rich black.