The first step is to create a new Color Configuration for the printer. Depending on the printer type, a minimum of four Process Colors (CMYK) must be created. In addition to CMYK, you can also create

• Light Colors – these include Light Cyan, Light Magenta and Light Black
• Gamut-Enhancing Colors – this includes Orange, Violet, Green, Blue, and Red
• Separation-Preserving Colors – these include White, Varnish, Primers, also gamut-expanding colors can be set up as such

The following description refers to a Tau 330 RSC setup with four Process Colors (CMYK), three Gamut-Expanding Colors (OVG), and one Separation-Preserving Color for White (W) to output variable data. To do this, take the following steps:

1. In the Color Configuration panel, click New [4].
2. The Add Color Configuration dialog opens.

Figure 2: The Add Color Configuration dialog for the Process Color Cyan for Variable Data Output

3. With the Add Color Configuration dialog, the user needs to create each individual color for the printer. The following fields must be filled in:
   • Process Color – Select the color you want to add from the drop-down menu list. Note that this list contains all available colors that can be used in digital printing. Depending on how the selected Process Color was configured under Administration > Ink, the checkboxes for designating Retain Separation [7] or a Light Channel [8] may be activated. Further information regarding these two choices can be found under Process Colors and Inks.
   • Ink – Select an appropriate Ink for your printer based on the Inks you have available. If the corresponding ink is not available in the list, you must first set it up via Administration > Ink. You can find out more under the Managing Process Colors and Inks article.
4. After selecting your Process Colors and Inks, for the majority of printers this is enough information to get started with production. If you need to print Variable Data on the Tau printer, then the following information should also be entered in the Add Color Configuration dialog:
   • Host – Select the Host IP address of the printer in the drop-down list.
   • Destination – In order to ensure fast enough read/write speeds between the Host - Server - Printer array, the rendered files are distributed to different directories on different hard disks. For Cyan, the target directory durst_vdp_disk_C must be selected. For each color the appropriate target directory must be selected accordingly.
5. Separations suffix: If additional colors, e.g. Brown, are to be integrated in a printing system, a suffix, e.g. "_br", must be entered for each color in this input field so that the correct suffix is written in the job ticket for the printer.
6. Press Save [9] to add the first color.
7. Create all other colors for the printer by repeating the steps described above. While the CMYK-OVG colors are set up as shown in Figure 2, the color White must be set up so that the Retain Separation [10] check-box is activated. White must be marked as Retain Separation, otherwise it will be recognised incorrectly by the color management system.

Figure 3: The Add Color Configuration dialog for the Process Color White for Variable Data output.

After you have created all colors, the Printer Configuration dialog should appear as shown in Figure 4.

Figure 4: The three panels of the Printer Configuration dialog at the beginning of the setup process.

After successfully creating your Inks, the second step is to create your Channel Configurations. Depending on the printer type, at least one color configuration – CMYK – should be created. Additional Channel Configurations can be created for Pure Black for example, if an output in pure black – e.g. for prints containing only barcodes – is needed. Additional Channel Configurations can only be created if Light Channels or Gamut-Enhancing Colors are available for the printer.

The following description refers to a Tau 330 RSC setup with three Channel Configurations: CMYK, Black and CMYK-OVG.
To create these Channel Configs take the following steps:

1. In the Channel Configuration panel, click on New.
2. This opens the Add Channels dialog, where you can now create individual Channel Configurations by dragging the colors from left to right in the correct sequence.

Figure 6: The Add Channels dialog at the beginning of the Channel Configuration setup process.

3. You can drag the appropriate Colors from left to right, we recommend you place the colors in this order (CMYK -> Gamut Expanding Colors -> Light Channels) [15]. If a color is already visible on the right side, you can drag the next color below the existing color. When dragging the color, do not release the mouse button until a gray line appears below the existing color.
4. As soon as a valid color sequence has been added in the gray area to the right, a valid config type is automatically displayed under the Type [14] field. As long as the color sequence is not correct, the error message "No valid configuration found" remains displayed.
5. Enter a name in Color Channel Config field [13]. You can use any name you wish. Internally, the Workflow refers only to the Channel Configuration selected under the Type field.
6. Once you have entered a Color Channel Config and a valid Type has been found, you can save the configuration by clicking on Save [16].

Figure 7: The Channel Configuration dialog with a completely filled out CMYK configuration.

7. Now you can create Channel Configurations for CMYK OVG and Pure Black.
8. After you have completed these steps, the Color Configuration and Channel Configuration settings should be as shown in Figure 8.

Figure 8: The Color Configuration and Channel Configuration settings panels after completing the Channel Configuration dialog.

The last step is to create all Print Configurations that you want to use for your press (and profile them as well).

Proceed as follows to do this:

1. Click on +New in the Print Configuration settings panel.
2. The Add Print Configuration dialog opens, in which you can now configure your Print Configuration.

Figure 10: The Add Print Configuration dialog

3. Select a resolution under the Resolution drop-down [21]. Based on the type of printer selected - Tau 330 RSC; Rho P5; Delta WT; etc. - the available resolutions (Print Modes) will be displayed. The corresponding designation, as specified in the printer software, is displayed in the Print Mode input field [22]. The selected resolution is also displayed in the X-Resolution (lpi) and Y-Resolution (lpi) [23] fields.
4. Under the Print Mode input field, you can overwrite the mode name if you require a different name or to apply the mode in the ERP system you are using.
5. The two fields Passes and Print Speed (m/min) are only used for documentation of the selected Print Configuration. By selecting a Pass type - Single Pass; 2 Pass, 3 Pass, 4 Pass, 6 Pass - this does not change how the print data is rendered.
6. We can now select our settings for the Render Engine [24]. The following parameters can be set:
   • Render Engine* – Select your Render Engine. There are three choices available:
     • Default from Settings – uses the rendering engine that has been set via Administration > Settings under the General tab.
     • Standard – uses the standard rendering engine based on the Adobe PDF library
     • Harlequin Host Renderer – uses the Global Graphics rendering engine (Harlequin RIP). This option can only be selected if you have a valid HHR license.
   • Dither mode – the following options can be selected from the drop-down menu
     • If no dither mode is selected, only grayscale images are rendered. Dithering takes place later during printing using another engine.
     • If a dither mode is selected – several dither modes are at your disposal, i.e.: Floyed Noise; Floyed LUT; AIS; AIS-Pearl; AIS-Mirror; HDSA etc. - so the rendered grayscale image is dithered.
   • Bit Count – decide whether to create a 1-bit black-and-white image or a 2-bit image. Normally, a 1-bit black-and-white image is required. If a different color depth is required, you will be informed by your technician.
   • DropSize – only necessary if variable drop size is required for the rendering.

Since we are creating a Print Configuration for the TAU 330 RSC, no further options need to be selected for the Render Engine [24] area, since only a grayscale image in the defined resolution is transferred to the printer.

7. We can then select the settings for all additional color-relevant options [25], which are created as a separate Print Configuration in the Workflow. Depending on the printer type, the user can choose from the following options:
   • Finishing Type – choose between Matt or Glossy
   • Backlit – the user is presented with multiple options for Backlit printing (transmitted light applications). These are only offered for certain printing systems, e.g. the RHO series. The following options are available for Backlit:
     • Process Colors – Activating this parameter tells the printer that all printed Process Colors should be doubled.
     • White Underprint – Activating this parameter tells the printer to Underprint White.
     • Overprint – Enabling this parameter tells the printer to Overprint White.
8. When you have defined all parameters for the Print Configuration, you can save by clicking on Save [26].

Figure 11: The Add Print Configuration dialog after entering all required parameters for the Tau RSC 330 RSC.

After saving the configuration the Tau 330 RSC printer should look the same as Figure 12.

Figure 12: Printer Configuration settings after entering all required parameters for the Tau 330 RSC.