Thursday 3 May 2012

PRINT

equiptment needed in order to screen print:

.Apron: materials can stain clothes so an apron is a high nessaserity when screen printing.




.Pallett knife: used for mixing acrillic paints and to scoop out emoltion to then place onto a scoop. it has a flexible steel blade which makes it have more movement and therefore easier to use on thick liguids.




.Screen: you apply the emulation to the screen which sticks and forms a film of wet emotion across the screen.




.Squeegee: a squeegee is used to spread ink or emulsion across a print screen it is a useful tool that enables you to spread emulsion without touching the substance and staining.( squeegee's can be used for various other procedures too ) 



.Photosensitive emulsion: photosensitive emulsion is a substance used in screen printing, it hardens when exposed to an ultraviolet light (from a light box) in order to get screens ready for printing a coat of emulsion is applied over it and then dried. once applied The emulsion cannot dry in the light and therefore must be kept in the dark for up to 24 hours. once it has dried it is applied to the light box and an ultraviolet light is beamed onto it. this makes the substance insoluble and hard. after this the screen is washed with water in order to rinse of an unhardened emulsion.






.Acrylic Paints: acrylic paints are the final paints in which you want to use on your screen, you choose colour, texture and other things which suit your needs for your end result. for example you may need to mix together colours in order to get the one you want.









.Drying rack: this is simply for putting your finished image onto so that the ink can dry and it will not run or drip anymore.

.Light box:  this is a large unit in which beams an ultraviolet light onto a screen and fuses your image onto the mesh screen by hardening the emulsion around the image and leaving the area of the image unexposed. first you must get your image ready on your screen, it is a useful tip to turn on the light box 30 minutes before use so that the light in side can build up and reduce the actual time it takes to work. once the glass is cleaned you close the lid and turn it on by turning the dial to the on button and let it heat up. once it has heated up we place our image (positive film) onto the glass facing down towards the light we then place our mesh screen on top of the image. now you have to close it and lock it by connecting the two locks on either side. we then press the vacume button and wait untill it gets flat. once it is on you can check the ultraviolet light by looking underneath the box and you will be able to see a blue light. next make sure its on 240 light units then it will count down the units to 0.

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