Wednesday, 5 December 2018

SCREEN PRINTING INDUCTION

paper screenprint> yellow n green
fabric> blue

white for textiles yellow for paper
brown tape> name, course, date
*date> when the screen is preserved until
*check dates*
can take more then one if u hv more than one colour

screens locations:
screen drawing, 
screen storage(left textiles, right paper)

  1. look for old dates(in the past) / blank frames> can use
  2. reserve the screen for yourself> find a roll of brown tape> stick it on frame> name, course, date(one week into the future)*7days
  3. remove the screens off/ clean it yourself before using (not clean it after using)
  4. bring screens into screen stripping(down the corridor, opposite to screen drying)
  5. use wet tissue to clean the mask
  6. clean screen 

how to remove screens:
take off the tape
put the screen into the sink
left chemical first
right chemical second
power host: turn right, on/ off
after washing

degreasing
sink outside> soap on sponge> rub on screen> thoroughly get everything off> rinse it with water
need to dry it in screen drying room(15-20mins)

coat screen with emulsion
  1. flat side facing us put it against the wall
  2. choose coating trough of the right side(hold it against the screen, leave a bit of border on the sides of the yellow), if theres no right size, place the screen horizontally against the wall n pick a larger trough
  3. uv reactive emulsion(light sensitive paint) in black bucket>wear plastic apron n gloves if u want> pour it into coating trough(amt: depends on how big the screen is)> get an even amount on trough> close the bucket with lid
  4. apply emulsion on screen> hold handle of trough> pop coating edge against the screen> tilt until emulsion running onto screen> bottom to the top(thin film)> tilt down to hv them drip back in(drip in the edge, use kidneys, scrape off anything u dun want on both sides
  5. put back excess emulsion into the bucket using the kidney
  6. check coat of screen at the lightbox (even, light through)
  7. put screen in the drying cabinet (15-20mins)
  8. clean coating trough with sponge with water> pop it back onto the rack
  9. exposing positives/design onto screen(positives can be on acetate, paper or tracing paper) black blocks the light
  10. design facing up, leave gap between two designs, between design n frame(things on top of screen won’t affect it)
  11. pull string on top of screen
  12. when finished, wash both sides, wash design> get light coning through the screen on positives> quick rub with sponge
  13. put it in drying room(15-20mins)
  14. put brown tape on the yellow borders, cover unwanted design(yellow)with brown tape
  15. grab acrylic paint
  16. add acrylic printing medium*get it from shop* 2/3 medium, 1/3 paint(slow down drying time of acrylic) (more ink less binder, more opaque) (more binder less ink, transparent) if too watery> more ink *have to pay for pot* *bring in own container with lid* can use acrylic with no names on it
  17. work from light to dark
  18. fit too n bottom screen on the bars of the vacuum tables
  19. lock with feet add papers to add more pressure
  20. grad a squeegee on the walls(squeegee has to be wider than design
  21. pour paint on the screen bottom
  22. higher the screen 
  23. flooding= fill screen with paint> push ink to bottom to top with squeegee 
  24. lower screen parallel to table
  25. use squeegee tilt it towards urself push it
  26. slide paper underneath of the registration paper
  27. print
  28. can mark paper with tape to mass produce

overlays and overprints
colours sit on top of each other to make a new colour 

can draw positives by hand(ink pen, china pencil)/ cut black paper
if there is too much emulsion on it, use the coating trough, put screen back against on wall, use trough to scrape off the unwanted emulsion
[light, water sensitive] store in dark dry environment 






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