Chapter15 Flashcards
Web press
Prints on one long continuous web of paper that is drawn into press from roll.
Sheet fed press
Prints on individual sheets of paper removed from stack one at a time.
Form rollers
Rollers that touch plate
Three cylinders on offset press
Plate, blanket, impression
Recommended ph reading for fountain solution
4.0-5.5
Two most commontypesof dampening systems used
Conventional and continuous
Successive sheet feeding
One sheet at a time is fed through press and does not overlap
Ductor roller
Roller that advances ink from the fountain roller
Five basic systems of offset press
- Feeding
- Printing
- Dampening
- Inking
- Delivery
Impression cylinder
Cylinder that applies the pressure so the ink can transfer to the paper
Double sheet detector
Control device that prevents more than one sheet of paper from entering on a press
On an offset press the paper passes between what two cylinders?
Blanket and impression cylinders
Do web presses need to shutdown to change rolls of paper?
No