K - Abbreviation
for black in four-color process printing. Hence the 'K' in CMYK.
Key - (1) The screw that controls ink flow from
the ink fountain of a printing press. (2) To relate loose pieces
of copy to their positions on a layout or mechanical using a system
of numbers or letters. (3) Alternate term for the color black,
as in 'key plate.'
Keylines - Lines on a mechanical or negative showing
the exact size, shape and location of photographs or other graphic
elements. Also called holding lines.
Key Negative or Plate - Negative or plate that prints
the most detail, thus whose image guides the register of images from
other plates. Also called key printer.
Kiss Die Cut - To die cut the top layer, but not
the backing layer, of self-adhesive paper. Also called face cut.
Kiss Impression - Lightest possible impression that
will transfer ink to a Substrate.
Kraft Paper - Strong paper used for wrapping and
to make grocery bags and large envelopes.