Calibrating A Halftone - Ricoh InfoPrint Pro C900AFP Manual

2. From the Patch Sets window, click a patch set (such as patches11) and select
the Edit → Properties option.
3. From the Patch Set name window (where name indicates the patch set
highlighted in the previous step), use the left mouse button to select the
patches that you would like to modify.
The screen shows 99 squares representing from 1-to-99 percent dot at one
percent increments. Squares which are dark will be printed. To change a patch
selection, point to the patch desired and left-click. Each click selects or deselects
a patch. 0 percent and 100 percent dot patches are always included in each
patch set. The example displayed below will print 0, 10, 20, 30, 40, 50, 60, 70,
80, 90, and 100 percent dot patches.
4. Once you have defined the patch set, select the File → Save as option and save
your patch set with a unique name.
The shipped patch set patches11 cannot be modified. However, a user-created
patch set can be modified through the Save option.

Calibrating a halftone

Once you have either selected an existing patch set or created your own
customized patch set, you must print it out, use a densitometer to measure the
density of each gray patch. Then you must enter the calibration values in the
Halftone Calibration Management System to create a calibration curve for the
printer.
Note:
1. Ensure that you use the Halftone Management System to both add and delete
patch files and Calibration files.
2. To change the version of the printer toner that you want to use, set the
toner-version actual destination attribute.
Use this procedure to accomplish these tasks:
1. If desired, define a custom patch set to print from the Halftone Management
System window from the menu bar by selecting EDIT → PATCH SETS, then
selecting the patch from the list and ACTIONS → SELECT AS CURRENT,
FILE → CLOSE.
2. From the Halftone Management System window, select a printer and a
halftone screen supported by that printer.
3. From the Halftone Management System window, select the Actions → Print
Patches option.
4. If the actual destination you chose has a logical-destination-assigned
attribute, the patch set will be sent to that logical printer. Otherwise, you will
be prompted for a logical printer.
5. From the pop-up window, click OK.
6. Once you retrieve your output from the printer, use the densitometer to
measure the patches. Because the Halftone Management System is designed to
take multiple measurements of each patch and use the average, you could
take three measurements of each patch.
7. Select the same actual destination (printer) and screen that you selected before
you printed the patch set (in 2).
The printed patch set identifies the screen, patch set, and printer, along with a
date/time stamp.
Chapter 29. Configuring the Halftone Management System
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