HDS is Harlequin's second generation frequency modulated (FM Screening / Stochastic) screening system. HDS creates reproductions with increased sharpness over conventional screening methods and offers complete freedom from both object and cross-screen moiré. It is ideal for reproducing subjects for which object moiré is a problem (such as scenes with fabric, venetian blinds or picket fences) and where detailed reproduction is required.

Stochastic Screening Demo

In addition to the standard HDS Super Coarse, HDS Coarse, HDS Medium, HDS Fine and HDS Super Fine screening (shown below), customers using HDS will now receive five additional coarseness levels. These additional dot selections can be used to adjust the coarseness of a job without having to lower the resolution. The sample image shows Magenta at the standard HDS Super Coarse and the Cyan at HDS Super Coarse with Extended Coarseness.





Step 1: Download Harlequin® RIP v.9
Click here to download the RIP for Windows 2003, XP, Vista or Windows 7™
Click here to download the RIP for Macintosh 10.4, 10.5, 10.6 or 10.7™ (PowerPC and Intel Mac Compatible)
Once you have downloaded the RIP installer you will need to unzip the file and then complete the installation by double clicking on the setup icon. The install program will install an RTI RIP folder on your computer's hard drive.


Step 2: Unlock the Stochastic Screening (HDS) Option
Start the RIP by double clicking on the RTI icon within the RTI folder on your hard drive. Go to the 'RTI RIP-Kit' menu ('File' on Macintosh versions of the RIP) and scroll down to Configure RIP. Click on the Extras button and highlight "HDS - Dispersed Screening" then click Add. Enter the HDS password: 3057128 and click OK. While in the Configure RIP Window you will also want to Configure the RIPs memory. Change the Printer Buffer = 32,768 and then click OK. The RIP will say that it needs to reboot. Click Yes to reboot the RIP and then start the RIP back up by double clicking on the RTI icon.


Step 3: Create Page Setups
In order to print to the RIP and have the RIP output you must first create a page setup.
TIFF Output Page Setup
Once you have created the page setup you will need to go back into the Page Setup Manager. Highlight your page setup and then click Edit. Click on the hand pointing to the four color pages (to the right of the Style drop down menu) which will open the Separations Manager window. Highlight the separation style being used and then click Edit. Change the dot shape to one of the HDS screen sets (HDS Super Fine, HDS Medium, etc.) and click OK to exit each of the windows.


Step 4: Create Shared Printers
Once you have created a page setup you can share that page setup so that other computers on the network will be able to print to the new page setup. Before you share printers from your RIP you will need to download the RTI PPD. The PPD folder contains the RTI Postscript Printer Description (PPD) which can be used to print to the RIP from both Windows and Macintosh computers.
Download the RTI PPD (Windows and Macintosh compatible)
This PPD folder contains PPDs for a wide variety of devices. The RTI PPD is a universal PPD.
Sharing Printers on a Windows XP RIP
Sharing Printers on a Windows 7 or Macintosh RIP




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