To complete the unit requirements safely and effectively, the individual must:
For reel systems only
Reel transportation and web control
explain WHS requirements for operating the reel transportation system
explain what can cause the reel to wander
describe what can cause the web to break at the unwind unit
explain the difference between a "flying paster" and "zero speed" type reel-stand
identify the print fault that results from the reel being run out of centre
list faults in the unwind section that can cause a web break
Reel delivery for rewinding and sheeting
explain WHS risks associated with rewinding
identify what safety feature is in the delivery system for when the web jams
explain why the sheet cut-off wanders
describe the effect of poorly adjusted nip rollers when rewinding and sheeting
outline further operations required for printed reels after removal from the printing machine
explain how to store the printed job after removal from the printing machine
explain why it is necessary to label each printed reel
For Sheet Systems Only
Sheet transportation and transfer system
explain WHS requirements associated with operating the sheet transportation system
explain the result of worn suckers at the feeder suction head
identify the type of two sheet detection on this machine
discuss how much movement the sheet should have when being registered by the side lay
explain possible causes of mis-register of the sheet at the feeder
explain visible signs of the sheet being registered in the feeder
explain how gripper malfunction can affect sheet control and transfer
explain when to adjust sheet transfer mechanisms
list causes of the feeder stack becoming uneven
explain what happens if the feeder stack is not loaded levelly
explain how unevenness of the feeder stack can be rectified
In-line processes
explain how consistency of the punching unit is checked
describe the outcome of excessive pressure on the slitters
describe the outcome of a dirty former
describe the outcome of defective pins in the folder
describe the outcome of adjusting rollers at the base of the former
list causes of the web jamming up in the folder
Sheet delivery
explain WHS risks associated with sheeting
describe the effect machine speed has on sheet delivery
explain advantages of spraying moving sheets with anti-set-off powder in the delivery
name items in the delivery that can mark the printed image
outline remedial steps that may be necessary to eliminate marking on the printed image
explain the function of a sheet decurler fitted to the delivery of some machines
list faults that can result from incorrectly set grippers in the transfer section of a machine
describe how the printed job should be stored after removal from the printing machine
Printing unit
explain the result if the plate develops a crack at the grip edge during a print run
explain the effect of a sticky blanket surface
list print faults that result from the blanket not being tensioned correctly
outline causes of blanket packing-creep during printing
explain how a build-up of ink on the impression cylinder can affect the printed product
describe the cause of ink lying back in the duct
list causes of ink stripping on the inking rollers
explain print faults that result from excessive use of fountain solution on the plate
describe the recommended pH range for fountain solutions
list causes of conductivity of the fountain solution changing over an eight-hour shift
outline problems caused by excessive conductivity of the fountain solutions
Drying unit
explain the link between driers and set-off and marking
identify what causes UV ink to dry
identify what causes the substrate to blister
describe what happens in the chillers if the drying temperature was too low
outline the effect of incorrect drying temperature on the finished product
Maintaining production process
explain the effect of inadequate communication within the work team
identify safety features within the organisation that help maintain effective production
explain ramifications of machine guards being removed and/or micro switches being disconnected on a machine
identify who is held legally responsible for the removal of machine guards and/or disconnection of micro switches
explain disadvantages of using a closed looped system for automatic control of the printed product
describe what other measurements besides optimum solid ink density can be measured to assess print quality
outline the most accurate method of checking register during a production run
explain why it is important to take immediate action when production problems are anticipated
explain what action is taken to eliminate further processing of unacceptable printed product
outline the effect of increases in relative humidity in the press room
explain the procedure to care for a newly delivered skid of paper to the press room
explain why waste should be sorted and the advantages of keeping reusable waste
explain industry standards to enhance effective communication with the client
discuss necessary procedures the client should follow to OK a printed product
Lithographic machine operating problems
explain when it is necessary to call service personnel to correct a machine problem
identify enterprise procedures in place to report any machine operating problems
Shutdown procedures
list advantages of proper labelling and storage of excess inks and materials
explain why printed product must be clearly labelled prior to removal from the press room
Cleaning and washing the printing unit
explain work health and safety (WHS) requirements for handling ink
explain safety precautions for cleaning the printing cylinders
describe the washing procedure for offset rubber blanket
determine how plates can be stored to minimise damage
Cleaning feed, transportation, delivery and in line sections
explain WHS precautions for cleaning these sections of the machine
Completing production records
explain how completed records are used in the final analysis of the job
outline benefits of comprehensive records when considering the production of future jobs
Information sources
identify machine manuals, safety and other documentation relevant to this task, where they are kept and the information contained.