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 responsible person you would discuss any production problems problem that can result from the plate cylinder not being cleaned prior to plate fitting effect if the plate is over tensioned during fitting faults that could result from a plate being under tensioned need for accurate plate bending on a web-fed machine considerations that would have to be made when deciding the colour sequence visual aid on the plate that identifies the colour of ink to be used 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 determining the position of the bustle wheels effect if the web is not spliced correctly operation of the particular web viewing device OHS factors that need to be considered when setting up the sheet transportation and delivery systems cause of more than one sheet to be picked up in the feeder need for accurate feeder set up determining the position of the sheet prior to being transferred to the printing unit determining which front lays to use type of substrate that would require additional front lays to be engaged need for additional front lays when printing this type of substrate OHS precaution that must be observed when setting up the delivery controlling the web in the rewind unit function of a slitter on a web machine cause of the web to jam up in the folder need to disengage the folder if sheeting problems that could be attributed to a blunt knife when sheeting safety feature that is in the delivery system if the web jams up fold that are always made with the grain of the web type of folder that folds the web in half in the direction of the web grain remedial steps that can be taken if there is a possibility of the ink marking in the folder main reason for having a silicone applicator on a web machine OHS precaution that must be observed when removing sheets from the delivery cause of sheets to be delivered incorrectly adjustments that would be necessary if changing from lightweight to heavyweight stocks sheet release into the delivery problems resulting from the excessive use of anti set off spray powder cause of printed sheets to set off in the delivery reduction of the possibility of set off in the delivery fault that may be created if there is excess vacuum on the slow-down wheels 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 and their use in gravure inks use of a spectrophotometer to assess the colour of an ink formula for calculating the correct quantity of lithographic ink print fault that will occur if excessive driers are mixed into the ink 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 checks that should be made on the plate prior to fitting required plate packing normal printing pressure required between plate and blanket determining the correct printing pressure between blanket and stock ideal blanket surface condition achieving the correct blanket tension when fitting a new blanket print faults that can occur if the impression cylinder is not maintained order that eccentric or concentric roller adjustments should be made width of the contact stripe between two rollers when setting the rollers ink duct setting ideal ink duct sweep setting recommended degrees shore hardness for bare back and conventional dampeners conductivity of the fountain solution need to constantly check the conductivity of the fountain solution changes to the amount of fountain solution across the plate surface need to adjust the fountain solution laterally reasons for not engage the perfecting unit main reason for blistering on a heatset machine effect of the oven on the ink function of chill rollers on a web machine types of ink drying/curing systems operation of the true inch function fitted to some machines problems that may cause the machine to keep stopping checks that are necessary prior to engaging the impression checks that are performed when running the machine effect the position of certain guards has on the operation of the machine communicating the steps involved in operating the machine to other team members aids that are available for the testing of the machine proof tests that are necessary for this job testing location function of a polarisation filter in a densitometer ideal conditions for inspecting the proof need to use visual aids on the printed sheets acceptable wet trap value range for lithographic inks an indication of optimum solid ink density in the absence of a proof result of low solid ink density and excessive dot gain methods that are available to check and adjust ink colour and consistency adjustments that may have caused mis-register adjustments that are made to position the image laterally adjustments that are made to position the image circumferentially adjustments that are made to position the image diagonally effect of changing the colour sequence on the wet trap value procedure to lengthen the print length on this type of press procedure to shorten the print length on this type of press difference between mechanical and optical dot gain cause of excessive mechanical dot gain 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 they are kept and information that is included in these documents
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