Test 1 Flashcards
DPI
Dots per inch. How many dots are being printed per inch on paper. (inside machine)
Blueline
Order of page printing. Basically obsolete.
Continuous tones
Colors blend from one to another. Photographs. Uses grays and color gradation.
Dot Gain
Increase in half tone. Ink spreads when absorbed into the paper.
Line art
Can be enlarged without blurring
Halftone screens
Size of dot and spacing controls value. Printer cannot control amount of ink it lays down.
Screen angles
Colors are printed at different angles so that you can see all the colors. Printer does it for you.
Image resolution
Measured in ppi. 300 ppi is optimal.
Spot color
Pure color. Unaltered.
Knockout
Doesn’t overlap colors. Plain paper under each color.
Overprinting
Colors lay over each other. Effect each other.
Trapping
Colors overlay ever so slightly so there is no white gap in print.
Web press
Feeds a roll of paper
continuous feed
quality is not as high as sheet fed
Prepress
everything that happens before it goes to print
Offset Printing
Plate is dampened with water in areas where ink is not wanted. Cylinders roll oil-based ink on where water is not present. Pressure controls amount of ink laid down.