need to ensure that the job specifications are read and properly understood production problems that could eventuate by not reading and understanding the job specifications person / people any production problems should be discussed with OHS precaution that must be observed when installing printing cylinders on the machine determining the optimum print sequence visual aid on the cylinder that identifies the colour of ink to be used precautions that are taken to ensure that the cylinders are not damaged during installation OHS precautions that must be observed when webbing up the machine determining the position of the reel effect if the brake tension is not set correctly function of the "Dancer" roller on a web machine effect if the web is not spliced correctly workings of the particular web viewing device principle of ESA roller operation on the gravure printing machine type of substrate that should be used on the ESA roller OHS precautions that must be observed when setting up the delivery controlling of the web in the rewind unit result of incorrect rewind tension remedial steps that can be taken if there is a possibility of the ink marking in the rewind problems that could be attributed to a blunt knife when sheeting use of air blast play in the delivery of sheets OHS precautions that must be observed when preparing inks and additives details that are necessary to check an ink's suitability for the printing process special end-use requirements that may be necessary additives used in gravure inks range in seconds for zahn cup measurements effect foaming has in a zahn cup when measuring the ink viscosity bringing pigmented ink to operating temperature before correcting the viscosity essential checks to be made advantage of using automatic viscosity controllers precautions that you observe to minimise waste when preparing the ink shelf life of most inks conditions that are relevant to the storage of inks and additives conventions that should be adhered to when labelling mixed inks advantage of using automatic viscosity controllers precautions that you observe to minimise waste when preparing the ink shelf life of most inks conditions that are relevant to the storage of inks and additives conventions that should be adhered to when labelling mixed inks OHS factors that need to be considered when setting up the machine function of chill rollers on a machine main advantage of gauging up and dry register prior to printing a job result of excess printing pressure determining the pressure to be applied to the doctor blade print faults that could be caused by excessive overspill of air from the inter-colour drier recommended air ratio for efficient inter-colour drying advantages of using high velocity air in the drying system OHS precautions that must be observed when slitting on the machine pre-heat web temperature required for lamination reasons for a printed product to be punched considerations when setting hole punching in relation to repeat length purpose of the dwell when cutting and creasing in-line controlling the ratio of print to in-line speed controlled result of excessive pressure on the slitters cause of the doctor blade to wear on a gravure printing unit reducing the wear of the doctor blade determining the optimum make ready speed for the job communicating the steps involved in make ready to other team members need to grade the drying speeds of each progressive colour, so that first-down colours dry faster the subsequent colours causes of a decrease in web tension result of increasing rewind tension after the roll has been partially rewound major cause of a telescopic roll testing metallised film to find out which is the correct side on which to print measuringthe metallised surface for coating thickness effect of annealing on aluminium foil purpose of using thermal imaging face stocks metallising substrates client requirements for bar codes print characteristics that are related to excessive printing pressure causes of picking when printing multicoloured work print faults resulting from using an over-reduced ink causes of moire patterns when printing by the gravure process instrument used to identify retained solvent trapped in the print purpose of taking Dyne readings purpose of the crinkle test when testing an ink print faults resulting from a worn doctor blade use of ink returning from the ink fountain when checking the viscosity of ink whilst using ink pumps problems that result from the excessive use of slow solvents reason why laminating inks once printed appear dull and easy to scratch result of excessive print area tension problems which the printer may associate with cold seals responsibility for the final say in the "OK" of the job machine manuals, safety and other documentation that are relevant to this task and where are they kept and information that is included in these documents
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