Printing Methods Flashcards
What is block printing?
-wooden block hand carved so the design is raised on the surface
What are 2 pros and 2 cons of block printing?
PRO:
- simple method of print
- no expensive equipment
CON:
- involves lots of manual work
- very slow and requires skill
What is copper plate / intaglio printing?
- design is engraved onto copper
- paste enters the recesses of the plate
- plate is pressed to fabric so the paste transfers
what is engraved roller printing?
- like the copper plate printing, but with a cylinder
- paste is fed into the roller to fill recesses
- steel blade removes paste continuously from the raised surfaces
What are the pros and cons of engraved roller printing? 2 of each
PROS:
- fine sharp outlines
- very good for long runs
CONS:
- costly
- not economical for short runs
What are 2 cons of engraved roller printing?
- costly
- not economical for short runs
Flatbed screen printing accounts for X% of world printed textiles production
23%
What percent of world printed textiles are made with rotary screen printing?
61%
What is the screen printing process?
- fabric attached
- screen placed on fabric against registration stops to prevent movement
- paste applied against edge of frame
- paste forced through open areas of design by squeegee
- screen lifted, moved to next part, etc.
What are 3 pros of screen printing?
- quick pattern making
- more colours can be printed
- sharps lines produced easily
What are 3 cons of screenprinting?
- large amount of tables required for high production
- delicate shading difficult to obtain
- screen clogging
What are 2 advantages of semi/automatic screen printing?
- greater production than manual
- printing with different repeat easier
what are 2 cons of semi/automatic screen printing?
- long set up time
- paste may not be evenly controlled
What fabric is used to creat a printing screen?
- mainly stretched polyester
- sometimes silk
What is raster?
No. Of threads per inch
How is a design put onto a screen?
5
- screen coated with photosensitive polymer
- dried
- exposed to light source (dark room conditions or UV)
- exposed areas give insoluble polymer.
- Unexposed is washed out, leaving spaces for the paste to pass through
What is rotary screen printing?
- cylindrical screens rotate in contact with the fabric
- paste fed from inside screens
- forced through with squeegee
How many colours can a rotary screen printing machine work with?
-average 7, up to 26
What is good about rotary screen being made from nickel foil?
-makes them very durable for prolonged use
Name 4 adjustments that printing with CAD allows
- editing
- creating repeat patterns
- changing colours
- colour separation
Name 3 textile printing trends within industry
- growth of Asian production at the expense of western production
- demand for shorter production times
- demand for greater variety in design
What are 3 pros of inkjet printing?
- no screen required
- photographic quality
- no physical pressure on fabrics
What is DPI?
Dots per inch
What DPI is photographic quality?
720 DPI
