TrapPro User Manual
Contents
1. HARLEQUIN GLOBAL GRAPHICS INDEX CONTENTS 4 2 Contents Chapter i InG OductiOn 60545500500c0 0805 sewn EEE AEA taees ues eteus 3 1 1 POODE E E e E E E E E E E g E E 3 1 2 BEUTE ere E R ER E eo weak R oe R E AA 4 1 3 Tapi poire ereere rra ee ee eee 4 Po AO S eara E e seg EN ERT EEE 4 1 ICAO Taps eerror ee eh niro Eeer a e ere 5 e e Po Wider 284708446 beeotaadn doe ny oe eeeue EEAO E seosass 5 Lom CIS Tape ajay ecen E gst naan ene E RE E E Hegde gee e an noes 5 Eo S ODOMMIOUG Mie s ence each veeuse pes oteqeeases eat EE EER E 6 L360 Siiallsobject provectiOn api 256nd0i25 doe yedtedae os beside leas cota aA 6 1 4 LAPPE ZONCS 225 tug RER haw ay ines hn hee deh eeas hee tet EEE eeu E R E 7 TAL IDE IOs and I os oc 2 oacos oon ses Beas Mens aaNet ee eat eee sae 7 Chapter 2 Enabling tap Pro iisi4c4sis nse iene eek ee chu iwi ding eebenun thse teense cues 8 2 1 Eni apr a r E Er ore noes neo ea oe ond bee eke R coe Gee ee ee 8 2 2 Reserving memory for trapping 6s edownscdousndommue SEADE TR genes RRR 8 Chapter 3 Working with TrapPra sss sss ss eee 11 cml Wera p rro Mana ei 6202504 ane tatoos oe ones e ry ane pene een ee ae ees 11 3 2 PKS S L oes onsen toe he eee ee ene oe Rete eoae tana ohana cee ease ee 12 3 3 SINS R iS eos avs chat Moar e REEE EEREN 5S RE ee E A eo Ee eahs 14 3 4 Monitoring TrapPro in the Harlequin MultiRIP 0 0 eee 15 Oe Ja phrO and Ky pes yasn seus AE E E en HT HA T2. gt of considerable extra computation so increase this value with caution See Section 1 3 3 page 5 for more information on feathered traps Black trap widths Default value 100 0 Allows you to specify the width of traps when trapping against black objects The value that you enter is a percentage of the normal trap width for example 200 0 creates black traps that are twice the width of normal traps Small object protection factor Default value 0 6 This option allows you to protect small objects on the page by reducing the trap width when trapping against them The protection factor that you enter ensures the trap width is never ereater than a ratio of the average width of the object to the normal trap width For example a value of 0 6 ensures the trap is never greater than 60 of the object it is trapping against Relative color step limit Default value 10 0 Allows you to determine where traps are generated by comparing the relative color change between two objects If a small value is specified for example 2 0 the color change need only be small before a trap is considered necessary which may cause too many traps to be generated Conversely if a large value is used for example 30 0 the color change has to be large before a trap is considered necessary which may cause too few traps to generated Sliding traps color limit Default value 90 0 Allows you to specify a threshold value to determine when a trap should begin
3. 1 Configure RIP Options W Automatic prep loading fe g Aldus Agole 4 Startup prep AppleLaserFreph 0 Disk space let Tor system Minimum memory left tor system Band memory per thread Minimum compression ratio L Memory for RIF Memory reserve for RIF Allow use of all available memory Allow stop start E Disable sounds Figure 2 1 Configure RIP Options If the Memory for RIP option is not selected the RIP is allocated all the available physical memory less the amount specified in the Minimum memory left for system field The Minimum memory left for system field lets you reduce the allocation for the RIP so that the memory is left for the operating system and any other running applications If the value is too small the operating system will start paging which will degrade performance 3 With the Memory for RIP check box selected enter your memory requirements in the adjacent box So add an extra 256 MiB to the figure already there 4 Ensure Allow use of all available memory is selected as this will allow all free memory to be made available to the RIP The Configure RIP Options dialog should now look similar to Figure 2 2 Configure RIP Options Wl Automatic prep loading fe g Aldus Apple Startup prep AppleLaserFreph 0 Disk space le Tor system Minimum memory left tor system Band memory per thread Minimum compression ratio Memory for RIF Memory reserve for RIP Allow use o
4. Preferences Highlighted traps v 4 Calibration amp Dot Gain Effects Negati Calibration None z EI ua AB _ Mirrorprint Tone Curves None E l Control strip None v bals Rotate 0 L None x S Tim page Cassette amp Page Scaling Vertical 100 00 Page layout zontal 100 00 7 Imposition None ial Horizontal Options PDF Options XPS Options Save As Cancel Figure 3 3 Trapping options in the Edit Page Setup dialog The other trapping methods supported by the RIP are as follows None Disables in RIP automatic trapping including traps defined with QuarkXPress sett rap function However any traps defined in Post Script LanguageLevel 3 will still be trapped To disable all trapping you can use the Disable Trapping feature supplied in the SW Page Features Examples folder It use it copy it to the Page Features folder and choose it in the Enable Feature drop down list in your page setup Settrap Quark Use this option to have the RIP generate over printed borders according to instructions embedded in suitable jobs by QuarkXPress INDEX CONTENTS 4 15 gt Note This option does not affect vector art left unaffected by the trap ping options in QuarkXPress 3 4 Monitoring TrapPro in the Harlequin MultiRIP TrapPro outputs trapping dialog to the RIP monitor The information can be used to verify that trap ping has been achieved successful
5. TEE ene ges 15 35 1 Seting Wk density ValS e A R K riide Cees ene T ERE R R setae send ease 16 Chapter 4 E 4 43 lt s 0dsdaddasdskvaravaricrindaswat cote nemawt saccade dee eseeawn 17 gt INDEX CONTENTS 4 3 Chapter Introduction TrapPro is an object based in rip trapping solution for the Harlequin MultiRIP that delivers out standing performance with excellent memory utilization Its powerful trapping engine is augmented by highly configurable trapping options which allow you to fine tune your trapping needs and accommodate a diverse range of job types and customer requirements Features An extensive range of advanced trapping features are included in TrapPro including Sliding traps to avoid abrupt shifts when creating transitions in trapping gradients vignettes Mitred ends and joins for traps that taper or narrow avoiding unsightly artifacts Narrowed proportional traps to preserve thin design elements Image mask support to trap masked images correctly and avoid lines where mis registration occurs Feathered traps to create soft edges that produces hardly discernible trap lines Complex image and shfill support to trap all object types Object to image trap placement is also supported Supports special inks such as metallic opaque and varnish transparent inks with lay down order being automatically determined Shaded fill radial and axial support Full n color support for CMYK and spot
6. the following Restricted Rights Leg end Use duplication or disclosure by the United States Government is subject to restrictions as set forth in i FAR 52 227 14 Alt III or ii FAR 52 227 19 as applicable Use by agencies of the Department of Defense DOD is subject to Global Graphics Software s customary commercial license as contained in the accompanying license agreement in accordance with DFAR 227 7202 1 a For purposes of the FAR the Software shall be deemed to be unpublished and licensed with disclosure prohibitions rights reserved under the copyright laws of the United States Global Graphics Software Incorporated Somerset Court Suite 320 281 Winter Street Waltham MA 02451
7. to pre vent overlaps Traps that are drawn in a series of steps that fade gradu ally at the fringe making them less noticeable A method of print reproduction which uses four colors cyan magenta yellow and black to produce a full color image Each color is laid down individually in a separation A gap occurs as a result of misregistration Two colors which should abut each other fail to align correctly The result is an area of unprinted page between the two colors where none should exist Holds information on each ink type used in a print job Determines which inks should be trapped and which should be ignored A method of implementing trapping within the RIP as a job is processed The transparent hole in a separation where a second over lapping color knocks out the first color The second color is printed into the hole to complete the image The process of printing separations where one color knocks out another color Avoids mixing colors caused when inks are placed on top of each other A printing error produced when two colors fail to align correctly The result is either gaps or overlays Trapping attempts to fix the effects of misregistration by spreading or choking the inks to make errors less noticeable Neutral density is a measurement of the ink s ability to stop light in other words its opacity Neutral density is used by TrapPro to decide which ink should be spread or choked For a more
8. to straddle the boundary between two colors Sliding traps are used to prevent a sudden and noticeable step in the trap where the trap crosses the spread choke threshold When the limit is set to 0 0 the trap always slides when set to 100 0 the trap never slides See Section 1 3 4 page 5 for more informa tion on sliding traps Trap color density reduction Default value 0 0 This option allows you to specify a value that scales the trap color towards the neutral density of the darker of the two colors involved in the trap When the value is set to 100 0 the trap is as light as it will go This setting applies to all traps except where objects use black or opaque colors Trap color density reduction is ignored when Feather steps is set to any value greater than 1 Object to image trap placement Default value Center Allows you to specify how objects on the page should trap against non image objects Image to object trapping applies in cases where an image is trapped to a non image object Text is only affected where it is the object to which an image traps In addition if one image traps to another image centerline traps are applied From the list choose from the following methods Automatic The trapping engine autonomously determines the most suitable trap to object placement based on the colors of the objects under consider ation Spread image Traps are generated by spreading the image area into the object Choke image Traps are
9. trapping parameters for each zone In general if a job defines several trapping zones for a page TrapPro can process the job more easily This is especially true for very complex pages or jobs which impose several pages on one sheet If the job defines no trapping zones the RIP assumes a trapping zone that is the size of the page and calls it Zone 0 The RIP names any trapping zones generated by the job as Zone 1 Zone 2 and so on 1 4 1 PDF jobs and PJTF PDF jobs containing PJTF Portable Job Ticket Format structures that detail trapping parameters are supported in TrapPro So if TrapPro is enabled then a PDF job containing trapping parameters via PJTF structures will be trapped as dictated by those parameters gt INDEX CONTENTS 4 8 Chapter 2 Enabling TrapPro TrapPro is supplied with the Harlequin MultiRIP and needs to be enabled before it can be used 2 1 Enabling TrapPro If you are using Sentinel LDK security you should order a new product key to enable TrapPro For details on how to perform an upgrade see the Sentinel LDK security document If you are using the Harlequin License Server HLS you will have been provided with a TrapPro password Use the following procedure o enable TrapPro when using HLS Start the RIP and select Harlequin MultiRIP gt Configure RIP to open the Configure RIP dialog Click the Extras button to open the Configure RIP Extras window From the list of RIP extras select TrapPro and click
10. will not be available for selection Ink set In TrapPro the ink set describes how each ink will be trapped that is whether an ink is to be trapped normally ignored treated as an opaque or as a transparent You can create ink sets using the Ink Set Manager as described in Section 3 5 page 15 units This options allows you to select your preferred measurement unit Trap width Default value 0 0762mm Allows you to specify the width of the normal traps generated by TrapPro Normal traps consist of all traps except those created against black or narrow objects such as small text or thin lines The value you enter here relates to the amount of possible horizontal misalignment occurring in the output device Trap height Default value 0 0762mm Allows you to specify the height of normal traps generated by TrapPro The value you enter here relates to the amount of possible vertical misalignment occurring in the output device TrapPro creates anamorphic traps when different values are entered for trap width and trap height For more information on anamorphic traps see Section 1 3 1 page 4 Feather steps Default value 1 This option allows you to specify the number of color gradiation steps to use in a trap The default value of 1 means traps are created with a constant color Any greater value than 1 turns the edge of the trap into a gradiation It should be noted that feathering is achieved at the expense INDEX CONTENTS 4 13
11. A ICC color profiles supplied with this Harlequin RIP are distributed with the kind permis sion of the ECI European Color Initiative and FOGRA respectively and of Heidelberger Druckmaschinen AG HEIDELBERG The IFRA ICC profiles supplied with this Global Graphics Software are distributed with the kind permission of IFRA and of GretagMacbeth International Cooperation for Integration of Processes in Prepress Press and Postpress CIP4 Job Definition For mat JDF and the CIP4 logo are trademarks of CIP4 Adobe Adobe Photoshop Adobe Type Manager Acrobat Display PostScript Adobe Illustrator PostScript Dis tiller and PostScript 3 are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States and or other countries which may be registered in certain jurisdictions Global Graphics Software Ltd is a licensee of Pantone Inc PANTONE Colors generated by ScriptWorks are four color process simulations and may not match PANTONE identified solid color standards Consult current PANTONE Color Publications for accurate color PANTONE Hexachrome and PANTONE CALIBRATED are trademarks of Pantone Inc Pantone Inc 1991 Other brand or product names are the registered trademarks or trademarks of their respective holders INDEX CONTENTS 4 233 gt W 6 Zaue gt US Government Use Harlequin MultiRIP software is a computer software program developed at private expense and is subject to
12. Add In the Enable Feature dialog that appears enter your TrapPro password and click OK oP a T Click OK to close the Configure RIP Extras dialog and OK to close the Configure RIP dialog TrapPro should now be enabled in the RIP but to ensure the RIP is correctly configured to process jobs you should reserve additional memory for the RIP for trapping purposes as described next For more information on HLS see the License Server document 2 2 Reserving memory for trapping The trapping process will fail if the RIP does not have enough internal memory RAM to process a job without resorting to page buffering To avoid this you should allocate extra memory to the RIP or if the RIP is using all available memory then increase the amount of memory RAM on the computer The default settings after installation are that the RIP already has all available memory assigned to it It is therefore only feasible to increase memory without physically installing more if the default set tings have previously been changed Initially a little trial and error may be required to find the optimum memory settings but adding an additional 256 MB to the RIP is a good place to start The procedure for allocating additional RIP memory is as follows 1 Inthe RIP select Harlequin MultiRIP gt Configure RIP to open the Configure RIP dialog Figure 2 1 gt INDEX CONTENTS 4 9 2 Click Options to open the Configure RIP Options dialog Figure 2
13. colors with no limit to the number of colors TrapPro is able to handle Protection for small text and graphic elements so they are not overwhelmed by traps Support for anamorphic trapping Intelligent trap brush that compares object and trap requirements and adjusts the traps so it is gt proportional to the original object This prevents artifacts such as mushroom artifacts on traps Auto chokes superblacks by default ensuring that superblack objects maintain a sharp crisp edge A separate trap width is definable for black Trap color density reduction This produces less visible traps between adjacent colors A faster more intelligent trapping engine that delivers improved performance over previous trapping solutions Support for trap zones generated by PostScript Language Level 3 compatible applications A preview tool that uses the Harlequin MultiRIP ROAM and highlight traps features to see where traps will be placed Support for PostScript language 1 2 3 and PDF 1 2 to 1 7 INDEX CONTENTS 4 4 2 Requirements TrapPro is supported with the Harlequin MultiRIP v10 0 or later Besides the resources required to run the RIP see the relevant Harlequin MultiRIP installation guide for resource requirements an additional 256 MiB should be allocated to the RIP for TrapPro as described in Reserving memory for trapping on page 8 3 Trap types The advanced trapping engine in TrapPro is ca
14. detailed description of neutral density see Adobe s PostScript Language Reference Third Edition page 458 A type of trapping program that operates on the page description language objects which describe how the page is laid out TrapPro is one such example program overlay overprint printing page buffering raster trapping pro gram register rendering spreads trapping zones traps trapsets light leak INDEX CONTENTS 4 8 Overlays occur in misregistration when separations mis align and overlap The process of laying colors on top of each other to create the color image The way colors mix needs to be accounted for when overprinting is used It is the opposite printing method to knockout printing This occurs when the area of memory allocated to the RIP has been used up and the overflow is written to disk Page buffering is not allowed in TrapPro you must allocate suf ficient memory to avoid it A type of trapping program which operates on the pixels that make up the rasterized page Raster based trappers are slower than object based trappers Separations register when they are printed with perfect alignment A process through which a page defined in the PostScript language is turned into a bitmap using a Raster Image Processor or RIP as it is commonly called A type of trap where the ink boundary is expanded to pre vent light leaks in the print Areas of a page that are marked as
15. ed automatically by TrapPro so there are no user settings to configure Figure 1 5 Image using narrowed proportional traps 1 3 6 Small object protection traps TrapPro protects small thin objects such as small text when traps are applied to them Figure 1 6 a shows how objects can be completely hidden by the trap when small object protection is not used Figure 1 6 b shows the same text trapped with small object protection enabled Notice how the text remains visible throughout For more information see the control for Small object protection factor on INDEX CONTENTS 4 7 page 13 a Small element b Small element protection used protection not used Figure 1 6 Small element protection 4 Trapping zones Areas of a page that are marked out for trapping are called trapping zones Each trapping zone can have its own set of trapping rules that are independent of any other zones which may exist on the page There are several ways by which trapping zones can be created e through TrapPro this sets up a default zone covering the whole page e through applications that generate trapping parameters or e through settrap parameters in the PostScript language Where trapping zones overlap the zone defined most recently takes precedent in the overlapping area Some image creation and page assembly applications can produce PostScript LanguageLevel 3 jobs that define multiple trapping zones on a single page and define different
16. f all available memory Allow stop start E Disable sounds Figure 2 2 Memory settings for TrapPro 5 Click OK to close the Options dialog and OK to close the Configure RIP dialog 6 You must now restart the RIP to use the new memory settings INDEX CONTENTS 4 i0 K If you find the RIP is unstable when processing jobs allocate additional memory to the RIP increasing in blocks of 128 MiB at a time until the RIP is stable Remember to restart the RIP each time you change the memory settings INDEX CONTENTS 4 II gt Chapter 3 Working with TrapPro TrapPro contains a number of configuration options which enable you to manage your trapping options precisely 3 1 The TrapPro Manager TrapPro uses the TrapPro Manager to maintain all your trapping options in one easily accessible place To access the TrapPro Manager select TrapPro Manager from the RIP s Output menu TrapPro Manager Name Trap width Normal Traps 0 0030 inches Widw Traps 0 1000 inches Company ABC traps 0 0150 inches Highlighted traps 0 0030 inches Edit New Copy Delete Select OK Cancel Figure 3 1 TrapPro Manager The TrapPro Manager allows you to add and edit trapsets Trapsets describe your job trapping pref erences such as trap width trap color image placement and highlight traps information Trapsets appear in the TrapPro Manager under a name cho
17. generated by spreading the object into the image area Center Half spread choke where the trap is centered around the original boundary of the two objects None Objects remain untrapped against images text INDEX CONTENTS 4 14 K Highlight traps Default value Not enabled Select the check box to enable highlighted traps and have them output to the Other colors in job separation where they can be inspected in Roam Ensure this separation is generated in the Edit Style for Separation window by setting the option to print it You may use red or green highlights to show where the traps are being generated To view highlighted traps in composite outputs TrapPro overprints highlight traps into the colors represented in the page buffer Reprocess the job with highlight traps off when printing the final output in composites 3 3 Using trapsets Trapsets are invoked in your Harlequin MultiRIP page setups by choosing TrapPro as the trapping method and the appropriate trapset from the Preferences drop down list ie New Page Setup x Output Device Resolution Device Preview Z 5 Vertical 100 0 Y Units Configure device Horizontal 100 0 v S v Override resolution in job Separations Screening amp Color Processing Style CMYK Composite v E Optimization None v Color No Color Management kd S i l Trapping Trapping options Method Emana E Enable Feature
18. gt 3 5 1 Setting ink density values As mentioned above TrapPro uses the neutral density value of an ink when determining which ink should be spread to create a trap Using the Ink Set Manager Figure 3 4 you can change the density values associated with your inks and in doing so determine how traps will be applied to your jobs Ink Set Manager Default CMYK Ink Set Figure 3 4 Ink Set Manager The Default CMYK Ink Set supplied in the RIP contains standard settings for cyan magenta yellow and black inks as shown in the Edit Ink Sets dialog Figure 3 5 Edit Ink Sets Name Ink Set Default CMYK Ink Set Name Ink Set Ink Name Type Density an Normal Magenta Normal Yellow Normal Select row to edit Black Normal and add or delete inks from sets Edit selected row 0 54 Delete Figure 3 5 Edit Ink Sets window When adding a new ink set or amending an existing one ensure that all inks used in a job that have a specific trapping requirement such as opaque transparent or ignore are included in your ink set Oth erwise any inks not included will be trapped as normal ink with 1 0 density INDEX CONTENTS 4 17 gt Chapter 4 Glossary chokes feathered traps four color process gap ink set In RIP trapping knockout knockout printing misregistration neutral density object based trapping program A type of trap where the ink boundary is reduced
19. ject protection factor 13 Trap Color density reduction 13 trap Color density reduction 13 Trap height 12 Trap width 12 units 12 Trapping zones 7 TrapPro Manager 11 Traps feathered traps 5 proportional 6 sliding traps 5 small element protection 6 U Units control 12 INDEX Zones INDEX PDF jobs and PJTF 7 trapping zones 7 CONTENTS 4 20 gt INDEX INDEX CONTENTS 4 21 gt INDEX CONTENTS 4 22 gt GLOBAL GRAPHICS g5 ec Tt AJ Nw soTtware Copyright and Trademarks TrapPro User Manual April 2013 Part number GGS TrapPro 10 Document issue 114 Copyright 2013 Global Graphics Software Ltd All rights reserved Certificate of Computer Registration of Computer Software Registration No 2006SR05517 No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior written permission of Global Graphics Software Ltd The information in this publication is provided for information only and is subject to change without notice Global Graphics Software Ltd and its affiliates assume no responsibility or liability for any loss or damage that may arise from the use of any information in this publication The software described in this book is furnished under license and may only be used or copied in accordance with the terms of that license Har
20. lequin is a registered trademark of Global Graphics Software Ltd The Global Graphics Software logo the Harlequin at Heart Logo Cortex Harlequin RIP Harlequin ColorPro Easy Trap FireWorks FlatOut Harlequin Color Management System HCMS Harlequin Color Production Solu tions HCPS Harlequin Color Proofing HCP Harlequin Error Diffusion Screening Plugin 1 bit HEDS1 Har lequin Error Diffusion Screening Plugin 2 bit HEDS2 Harlequin Full Color System HFCS Harlequin ICC Profile Processor HIPP Harlequin Standard Color System HSCS Harlequin Chain Screening HCS Harle quin Display List Technology HDLT Harlequin Dispersed Screening HDS Harlequin Micro Screening HMS Harlequin Precision Screening HPS HQcrypt Harlequin Screening Library HSL ProofReady Scalable Open Architecture SOAR SetGold SetGoldPro TrapMaster TrapWorks TrapPro TrapProLite Harlequin RIP Eclipse Release Harlequin RIP Genesis Release Harlequin MultiRIP Harlequin Parallel Pages and Harlequin VariData are all trademarks of Global Graphics Software Ltd Protected by U S Patents 5 579 457 5 808 622 5 784 049 5 862 253 6 343 145 6 330 072 6 483 524 6 380 951 6 759 498 6 624 908 6 809 839 Other U S Patents Pending Protected by European Patents 0 803 160 0 772 934 0 896 771 672 29 760 8 08 Portions licensed under U S Patent No 5 212 546 4 941 038 TrueType is a registered trademark of Apple Computer Inc The ECI and FOGR
21. ly and to check the time taken to execute the trapping process In the example output shown below the trapping procedure took 9 seconds to complete examined 79 page objects and generated 36 traps Setup loaded Highlight traps Starting Job On 11 September 2002 16 19 03 Using Color Setup No Color Management Using default device calibration Interpretation time 9 seconds Trapping 79 objects on the page Generated 36 traps in 0 00 06 3 5 TrapPro and ink types TrapPro uses ink types when determining which inks to trap and which to ignore Four ink types are recognized by TrapPro Normal Most inks are of this type and traps will be created to prevent light leaks or overlays by TrapPro using a variety of trap types Opaque Opaque inks such as metallic are not allowed to spread However when an opaque ink meets another opaque ink and a trap is required the lighter ink according to their neutral density values is chosen to spread See Setting ink density values for details on setting the neutral density value of an ink Opaque ignore This type of ink is not trapped Transparent Transparent inks such as varnish are only trapped to other transparent inks and never to normal inks When deciding which ink to spread the lighter of the two inks according to their neutral density values is chosen See Setting ink density values for details on setting the neutral density value of an ink INDEX CONTENTS 4 i6
22. needing trapping Traps are used to hide misregistration errors The two main trap techniques used are spreading where the ink boundary is expanded and choking where the ink bound ary is contracted A collection of trapping parameters in TrapPro The trap set allows you to apply different trapping requirements quickly and easily in the Harlequin MultiRIP An area of the page where the background white paper is revealed as a result of misregistration gt Index B Black trap widths control 13 C Creating ink sets 16 E Enabling TrapPro 8 9 E Feathered traps 5 H Harlequin M ultiRIP TrapPro Manager 11 Highlight traps control 14 Ink sets creating and editing 16 Ink types normal ink 15 opaque ignore ink 15 opaque ink 15 transparent ink 15 N Name trapping preferences control 12 Normal ink type 15 O Object to image trap placement control 13 Opaque ignore ink type 15 Opaque ink type 15 P Proportional traps 6 R Relative color step limit control 13 S Sliding traps 5 Sliding traps color limit control 13 Small element protection traps 6 Small object protection factor 13 T Transparent ink type 15 Trap Color density reduction control 13 Trap height control 12 Trap width control 12 Trapping controls black trap widths 13 highlight traps 14 name trapping preferences 12 object to image trap placement 13 relative color step limit 13 sliding traps color limit 13 small ob
23. pable of creating pixel accurate traps using a variety of trap types for an almost imperceptible trapping solution The various traps used by TrapPro are described in this section You may find this information useful when setting up your TrapPro trap ping options which are described in Trapset preferences on page 12 3 1 Anamorphic traps Anamorphic traps are used by TrapPro when the possible amount of misalignment is different across the vertical and horizontal axis of the press Using anamorphic traps helps to minimize the amount of trap required to compensate for this type of mis registration Anamorphic traps are created when different values are set for the trap width and trap height in the Edit TrapPro Preferences dialog Mis registration area Circular brush Elliptical brush hea s s a A misregistration area b Normal trapping c Anamorphic trapping which is different in the applied with a circular applied with an elliptical vertical and horizontal axis brush brush Figure 1 Anamorphic trapping gt INDEX CONTENTS 4 5 gt 1 3 2 Mitred end traps Mitred end traps are used to tidy up the ends of traps as illustrated in Figure 1 2 Mitred ends are cre ated automatically with no user settings to configure Mitred ends Figure 1 2 tred traps 1 3 3 Feathered traps Feathered traps are used to create a smooth color transition at the trap object boundary This softens the line between the
24. sen by you to reflect its purpose or the type of traps it creates For example Wide traps Highlighted traps Customer ABC and so forth The trap set names appear in the Edit Page Setup dialog ready for selection as described in Using trapsets on page 14 3 2 Trapset preferences To specify your trapset preferences create a new trapset or edit an existing trapset from the list in the TrapPro Manager dialog The trapset options are contained in the Edit TrapPro Preferences dialog INDEX CONTENTS 4 12 gt Figure 3 2 and are described below Edit TrapPro Preferences 28 Name trapping preferences NewTrap Ink Set Default CMYKInkSet RAI Trap Widths Trap width 0 0030 Trap height 0 0030 Feather steps 1 Black trap width 100 Small object protection factor 0 6 Color Details Relative color step limit 10 0 Sliding traps color limit 90 0 Trap color density reduction 0 0 Images Objectto image trap placement Center v Roam Preview Highlight traps Red z Figure 3 2 The Edit TrapPro Preferences window Name trapping preferences This option allows you to specify a name for this trapset The trapset name is subsequently made available for selection in the Harlequin MultiRIP page setup when choosing trapping prefer ences You cannot change the name of a trapset that is associated with a page setup and in this case the name field
25. trap and the object with the intent of making the trap less noticeable TrapPro allows you to specify the number of steps to use for feathering with the Feather steps option as described on page 13 Unfeathered brush Feathered brush aa a Unfeathered trap b Feathered trap Figure 1 3 Image showing feathered and unfeathered traps 1 3 4 Sliding traps An ink s neutral density value is used to determine whether an ink should be spread or choked In some cases where the neutral density changes across an object the spread choke threshold may be crossed This results in a sudden change in trap direction and a noticeable step in the trap A sliding trap prevents the abrupt shift in direction by allowing the trap to slide along the spread choke centerline in a series of smaller less noticeable steps The point at which the trap begins to slide is con INDEX CONTENTS 4 6 gt trolled by Sliding traps color limit as described on page 13 a Normal trap Notice the b Sliding trap Notice how the abrupt shift from spread to trap does not have an abrupt choke shift in direction Figure 1 4 Normal traps a and sliding traps b 1 3 5 Proportional traps TrapPro uses proportional traps when trapping against objects that become thinner as illustrated in Figure 1 5 This prevents the trap straying into an adjacent area in the case of the diagram this would be the white area of the page Proportional traps are creat
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