GPS 1500 > Final Exam > Flashcards

Final Exam Flashcards

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1
Q

Relief Printing

A
  • Flexographic or letterpress
  • raised rubber, plastic, wood or metal
  • Plastic Bags and six uses (separate card)
  • Johann Guttenberg, 1450
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2
Q

Intaglio Printing

A
  • Roto Gravure
  • Sunken Cylinder
  • More than one million impressions, high quality magazines, packaging, fake wood
  • Karl Kleach, 1875
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3
Q

Screen Printing

A
  • Silk Screen/Seriography
  • Stencil
  • T-shirts, irregularly shaped objects
  • Created in the orient, 1300’s
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4
Q

Lithographic Printing

A
  • Offset/”Stone writing”
  • Uses a flat plate that one part like H2O and ink
  • Business cards, memo pads, textbooks
  • Alois Senefelder, 1798
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5
Q

Electrostatic

A
  • Digital/non-impact
  • Drum that is positively charged, negatively charged ink
  • Xerox, quick copy
  • Chester Carlson, 1937
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6
Q

Printer’s Measurements

A

72 Point = 1 Inch
6 Picas = 1 Inch
12 points = 1 Pica

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7
Q

Uses for Printer’s Measurements

A

Inches are for page dimensions
Picas are for line length
Points are for type size

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8
Q

Film Structure

A

1) Anti-halationon Backing
2) Base + order of chemical development
3) Emulsion Silver Halides

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9
Q

Emulsion + Order of Chemical Development

A
  1. Developer (Base)
  2. Step Bath (Acid)
  3. Fix (Hardens)
  4. Wash at 68F or 20C
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10
Q

VDP

A

Variable Data Printing

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11
Q

Line Copy

A

Composed entirely of lines

ex. sketches

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12
Q

Continuous Tone Copy

A

Consists of images in a variety of tones

ex. photograph

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13
Q

Halftone Copy

A

A reproduction of continuous tone color in magazine or book

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14
Q

Halftone Screen

A

Uses dpi, lpi, ppi. For continuous color

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15
Q

Tint Screen

A

A tint that breaks solid areas into uniform series of dots. % of dotes for line copy.

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16
Q

Lithographic Plates

A

Consist of hydrophilic (accepts water) and hydrophobic areas (Repels water and accepts ink)

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17
Q

CTP plates

A

Computer to Plate (used in lab for notepads)

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18
Q

XXX

A

Gripper Margin

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19
Q

Press Overview

A

1) Feed
2) Registration
3) Print Unit
4) Delivery

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20
Q

Types of Cylinders of Offset Presses

A

1) Plate: Right reading
2) Blanket: soft rubber, wrong reading
3) Impression: Metal

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21
Q

Principle of Offset

A

Water and ink don’t mix

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22
Q

Duplicators

A

Any offset lithographic machine that can feed a maximum of 11x17 inches and minimum of 3x5. They can print 5,000 to 10,000 impressions per hour.

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23
Q

True Press

A

Is an 4-unit press and can feed a sheet size of 54x77 and a minimum sheet size of 11x17. Much larger unit

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24
Q

pH Scale

A

Metric scale that shows how acidic (14) or alkaline (0, vinegar) )substance are. It stand for the potential of hydrogen.

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25
Successive Feeder (Gap)
Mechanical fingers pick up one sheet from the top of the pile and direct it into the registration unit
26
Stream Feeder (Overlap)
Overlaps sheets on the registration board and slows the rate of sheet movement significantly
27
Delivery Units
Gravity delivery: is the simpler or less dependable of the two designs Chan Gripper Delivery: the most popular delivery unit; the press sheet is pulled through the printing and delivery unit to a different set of grippers on the chain of the delivery unit.
28
Substrate
Any base material that receives an image
29
Ink
Is pigments dispersed in a vehicle with additives
30
Basic Ink Properties
1) Viscosity: Body of ink 2) Tack: Stickiness 3) Drying Quality
31
Viscosity
High: Thick and Heavy, screen and offset Low: light and fluid, flexographic and gravure
32
Drying Quality
Hardens by: 1) Oxidation: combine with oxygen 2) Penetration: absorbed into the substrate 3) Evaporation: Most of the ink evaporates leaving emulsions onto the paper
33
Rheology
Science of Flow
34
Three Main Ingredients
1) Pigments: Black or White 2) Vehicles: Grouped by how they dry 3) Additives: Characteristics-wax, scuffing, dry i. e: reducers, driers, binding varnish, waxes, cornstarch, anti-skinning agents
35
Thixotropic Inks
Rubber based ink, heavy and stiff in can, fluid on press
36
Trapping Inks
refers to the degree of ink transfer onto wet and dry ink films already on the substrate
37
Transparent
Pigments that allow light to pass through, four process colors
38
Opaque
Light can't pass through
39
PMS
Pantone Matching System: a universal method for specifying and mixing colors.
40
Two Major Processes in Making Paper
Pulp Manufacturing, Mate paper
41
Slurry
Cellulose fibers suspended in water
42
Types of woods used to make paper
Softwoods: Coniferous Hardwoods: Deciduous
43
Fourdrinier Machine
1) Head box: Slurry is prepared in large mixing vat 2) Mix is poured onto a moving mesh screen 3) Drying End
44
Grain
Cellulose fibers align in direction of screen movement | - Always fold with the grain if possible
45
How to Weigh Paper
Substance weight and basic weight = weight of 500 sheets of paper in the parent size. 500 sheets=1 ream M Weight = 1,000 sheets C Weight=100 sheets
46
Basic Size
Coarse paper: Industrial (corrugated) Fine paper: Printing Largest in the family of fine papers: book or offset Writing/Cover/Bristol/Other: ???????????
47
C1S
coated one side
48
C2S
coated two side
49
coated vs. uncoated paper
claylike material fills porous surface vs. open porus newsprint
50
Ts'ai Lun
hand made modern made paper in AD 105 until 1798 automated Fourdrinier
51
Uncoated paper
newsprint, ground wood
52
Screen Printing
oldest form of printing originated in the orient
53
Stencil
1) Hand-cut 2) Tush and glue 3) photographic A- indirect: expose emulsion then put on mesh B- direct: emulsion put directly on screen then exposed
54
Screen Fabric
mono filment or multi filment
55
How to squeegee
45 degree slant or angle drag
56
2 color screen printing
Light color first
57
Dimensionally Stable Screens
wood or metal
58
Most Dangerous Area
Bindery
59
Folding
- Can be done parallel or right angle - Can be done by: 1. Hand: bone 2. Machine: knife 3. Buckle: our lab
60
Signature
a large single press sheet folded and trimmed to form a book.
61
Bindings
1) Adhesive: (a. Padding b. Perfect c. Patent) 2) Side: (a. Staple/stitch/looseleaf b. comb: mechanical/wire c. side sewn 3) Saddle: (a. Wire stitch, b. self cover, c. case bound)
62
Gravure Printing
jagged saw tooth edge to it
63
Flexo Printing
halo edge
64
Offset Printing
even edge
65
Screen Printing
thick or varying ink deposit
66
Digital Printing
splatter/spatter, even edge
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