What is bleed / crop mark?
Bleed is a printing term that printing is extended beyond the trim edge and leaving no white margin. In short, bleeding area will be trimmed off. Crop marks or trim marks, are lines printed in the corners of the artwork to show the cutter the area to trim.
Client’s PDF should indicate crop marks (where the card should be trimmed), with the colour extending beyond the crop marks by 3mm (bleed). Without either, there is no way of telling the finished size of the card, if the card should bleed or whether a white border should print around the edge of the card.
What is CMYK?
CMYK is a colour model in which all colours are described as a mixture of these
four process colours. CMYK is the standard colour model used in offset printing for fullcolour documents. CMYK stands for Cyan-Magenta-Yellow-Black
RGB is usually on display devices which stand for Red-Green-Blue.
What is a high res artwork?
High res artwork show be in 300 dpi