The process of lithography was discovered in 1798 by ______.
-
3 major concepts that help propel lithography from stone lithography with limited reproduction to a dominant reproduction process.
-metal plates-design of the offset-
4 segments making up printing, publishing, and the packaging industry
-newspaper press-packaging business-design industries-marketing places
3 stages of graphic design
-thumbnail sketch-composition sketch-final design
the ___ roller is the roller that touches the plate.
form
a halftone consist of:
a series of small dots of various sizes.. highlights, midtones, and shadows
The printing unit of the lithographic press typically has how many cylinders
3.. impression.. plate.. impression
forwarding systems
-stream... paper is separated in the back of the feed area.-successive... paper is separated at the front
4 ways to describe a litho. press
-paper size-amount of colors printed-sheet vs. web-perfecting or not
2 advantages of CTP
saves timecheaper
3 primary ingredients in a fountain solution concentrate
-acid-gums-additives
humid conditions make paper expand more
across the grain
who is given paper for inventing paper?
Tsai Lun
on the pH scale
the number 7 indicated neutral
sheetfed litho printing uses ____ ink.
paste
what are hickies?
when there is dirt or dust on the impression cylinder
What is density?
ability of a an object/color to absorb light
______ are used to check for problems that can occur during a pressrun
dot gain scales, test forms, color bars
in reflecting densitometry, reflected light is compared to incident light. Keeping this in mind, 100% reflectance would equate to:
0.0 density reading
What is scumming?
Ink printing on non image areas.