To complete the unit requirements safely and effectively, the individual must:
Job requirements
describe what to do if vital information is missing from the job ticket
ensure all required materials are available prior to set up
Flexographic printing plates and cylinders or sleeves OR plate mounting sheets
identify precautions to avoid damaging plates and cylinders
For reel systems only
Reel in-feed
explain work health and safety (WHS) factors to consider when operating the reel in-feed and delivery system
explain how to correctly select printing side of the material
describe the effect of low web tension on the print
name types of web splices that could be used appropriately for the job
Reel delivery system
describe effect of excessive web tension at the rewind of the machine
discuss how to minimise three risks associated with the rewind
For sheet systems only
Sheet in-feed
explain WHS factors to consider when operating the sheet in-feed and delivery system
describe why the sheet is normally set up in the middle of the machine
describe effect side-lay selection has on the job
describe how appropriate front lays should be selected
describe what determines position of the sheet before it is transported to the printing unit
explain how a register check is carried out
discuss why a two-sheet cut is used on most feeders
discuss how the machine recognises if a sheet is missing or late
Sheet delivery system
describe why application of spray powder is sometimes advisable
discuss effects of too much spray powder
show how slowdown devices may be used in delivery
identify effect of excessive jogging on the stack
Selection and preparation of inks and additives
name major environmental and WHS concerns with regard to inks and additives
describe how ink suitability is matched to a particular job
describe implications if ink is too viscose
describe how an ink that is slightly light can be modified to meet the job needs
identify methods to check ink for correct colour
name the person who passes the colour prior to running the job
Machine set-up
discuss all WHS factors to consider when setting up the machine
show how machine specifications are determined, relating to a specific job
discuss steps to ensure the inking system is adjusted correctly
describe why inking system ink level is maintained at a certain level
list necessary precautions when handling doctor/chamber blades
identify optimum make-ready-speed for the job
explain basic in-line processes
list steps to incorporate the in-line processes into the make-ready
describe how equipment used in in-line processing is protected against damage during set-up
list precautions to take if uv drying is utilised to dry the ink film
Proofing and adjustment
identify methods to minimise waste during make-ready
list procedures required to have the print approved
describe quality control measurements to apply to the proof to test against known standards
outline how to check on initial print prior to running
describe how setting adjustments are determined
identify processes to plot success of the machine adjustment
describe how final results are recorded for future reference
Relevant test procedures
identify and describe tests for scuffing and coefficient of friction
show circumstances in which these tests should be applied
Leaching
discuss leaching
Information sources
identify machine manuals, safety and other documentation relevant to this task and where are they kept, and information contained.