Elements and Performance Criteria
- Inspect the screen
- Screen frames are identified to determine colour sequence
- Each screen frame is examined for defects and appropriate action taken
- Each screen is taped as necessary
- Screens are inspected against film positives noting variations in centring, registration and alignment and appropriate action is taken
- Screen frame, mesh and stencil are appropriately handled according to manufacturer's/supplier's specifications to prevent damage and hazards to personnel
- Maintain and adjust machine
- Machine is inspected and routine user maintenance is carried out according to manufacturer's/supplier's specifications and enterprise procedures
- All necessary periodic adjustments and user maintenance items are made at the correct times according to manufacturer's /supplier's specifications and enterprise procedures
- Install screen frames and dry run machine
- Laysheet is positioned in grippers and side-lay according to manufacturer's/supplier's specifications
- Image position is established on laysheet
- Screen frame is positioned in screen frame holder
- Registration, alignment and centring are confirmed and screen clamps tightened to ensure no movement of the frame according to manufacturer's/supplier's specifications
- Machine is run through printing cycle at the same time ensuring that substrate registers in lays and appropriate action is taken
- Prepare and position flood bar and squeegees
- Flood bar (for semi-automatic and automatic machines) and correct squeegee are assembled according to manufacturer's/supplier's specifications ensuring that flood bar is free from nicks and burrs
- Squeegee blade is sharpened according to manufacturer's/supplier's specifications considering the ink system to be used
- Flood bar (for semi-automatic and automatic machines) and squeegee are positioned according to job specifications with squeegee at the correct pre-determined angle
- On/off contact (and peel-off if available) is adjusted to suit ink system and printing speed according to manufacturer's/supplier's specifications
- Squeegee is correctly adjusted and brought into contact with the substrate
- Set up drying/curing unit