chapter 4 Flashcards
cover weight
thicker than text weight paper
text weight
text material in between cover materials
caliper
thickness of paper
calendaring
paper is rolled through steel rollers to keep the paper texture uniform
two properties of paper that are measure to determine the grade of paper
brightness
opacity
what two questions are we trying to answer when estimating paper
- how much paper is needed for the job
- what is the cost of paper needed for the job
500 sheets of paper
ream
standard size for text paper
25 by 38
standard size for cover paper
20 by 26
what part of he plate is hydrophilic
the non-imaged area or unetched
what part of the plate is hydrophobic
the imaged area or etched area (where the ink goes)
ink coverage
how much ink is going to go on a piece of paper
G7 ceritifcation
certifies that printing presses and proofing systems are calibrated to maximum efficiency
what factors change in the ink formula when the ink is changed
ink coverage
ink mileage
G7 benefits
Less paper used
Less ink used
Less energy used
three responsibilities of prepress
preflight proof and press
GUI
graphic user interface
PARC
paolo alto research center
disadvantages of the mechanical workflow in prepress
Labor intensive
Expensive (dollar chasing a dime)
Environmentally unfriendly
Time consuming
Low quality (compared to what can be done today)
SAAS
software as a service
how many trees are harvested a year
15 billion trees
of trees in the world
3 trillion
largest consumer of trees
lumber
country with the most trees
Russia
longest section of press
drying cylinders
calcium carbonate
makes the paperwhite
how paper is outputed
sheets and rolls
rolls are normally used for
web offset
sheets are normally used for
digital
first form of paper
papyrus
person who is known for creating paper
Cai Lun
credited with making first printing press
Gutanberg
headbox
where the fibers are dumped
mechanical paper can also be called
ground wood
the thicker the paper means
more opacity
paper is sourced from
1/3 recycled, 1/3 lumber mills, 1/3 trees
lignin and resin can cause paper to
age overtime
paper grade is determined by
brightness and opacity
gripper
gap of the plate 1/2 inch
coverage types
light: 15
medium: 35
heavy: 55 or more
1 user of wood
IKEA
benefits of GCR
- make ready is reduced
- less paper consumed
run waste
sheets pulled off to validate the color perimeters of the proofs
saving color
when sheet matches the proof
portable digital format
black comes from
carbon and has no pigment
why is the color bar used
a reference for color accuracy and consistency throughout the printing process