Prepress
Prepress encompasses all the processing tasks required to produce an output ready for printing. This is either plate output for lithographic printing or high resolution pdf output for digital printing. We pride ourselves on our knowledge and expertise in digital workflow and have years of experience in computer to plate technology and closed loop colour management. Many of our competitors have only recently invested in such technology.
If final pdf files are supplied we request they are to our specification if additional help is required please contact iain.robinson@henryling.co.uk We also accept text and graphics in many application software packages and these can be supplied on a variety of media or email or ftp. We will then create pdf files for printing. We undertake scanning and this takes place on our iQsmart3 which was developed by Creo (who were bought by Kodak in 2005). It has a 305x457mm bed enabling batch scanning for maximum efficiency. Scans are placed on the server ready for annotation, guttering etc using Adobe Photoshop on a variety of Macintosh and Windows workstations.
Colour scanning is done within a closed loop colour management system from prepress to press. Our presses are colour calibrated to the ISO 12647-2 standard to provide a solid reference. Our scanning software and Photoshop are configured to maintain consistency to this standard. A colour calibrated monitor is used to check the scan and perform retouching or annotation as required. Colour correction is undertaken in daylight-balanced (D50) viewing conditions. Finally, our colour proofing system is a GMG ColorProof RIP running an Epson 4000 proofer. Combined with GMG proofing paper this setup provides digital proofs fingerprinted to the same standard as our presses.
Final digital files are processed using Heidelberg's Prinect Printready workflow software. Files are submitted into Printready which automatically performs file quality checks for incorrect fonts, image resolution and colour separation etc and then combines the pages in the files with an imposition layout generated from jdf data already held in the production MIS system. When the checks are passed an Imposed PDF of the final job is automatically produced allowing for a final onscreen quality check before final output. This largely automated system allows us to ensure quick and efficient turnaround, whilst maintaining the highest quality standards for first time correct final output.
If required a hard copy proof or single page PDF proof can be produced direct from the populated imposition layout for customer approval prior to final output.
Final lithographic plate output is produced using Heidelberg Metadimension RIPs (fully integrated into the printready system) to two Heidelberg Topsetter platesetters. Plates are punched inline and produced with plate and colour control patches for quality control purposes and a CIP3 digital file of the plate output. Having two platesetters gives us total continuous automated plate output of up to 400 plates and a vital backup device when servicing or repairs are needed.
The CIP3 standard was designed to be able to pass data between various print processes. We currently use CIP3 to pre-set the ink ducts on our colour presses to ensure a quick and accurate set up of the press. The same CIP3 data is then used by Imagecontrol as a colour reference to which the printed sheet is compared. Imagecontrol would then, if neccessary, make further adjustments to the press to maintain consistent colour throughout the print run.
The plate technology we use and our expertise in process calibration enables us to image plates using Diamond or stochastic screening. These are terms for a random 20 micron dot structure allowing for superb detail in images where conventional screening would cause degradation.
Finally all processes that a job takes once submitted into printready are recorded within the job. This information along with all other elements of the job can then be archived once the job is complete and retrieved at a click of a button.