Ricoh InfoPrint Pro C900AFP InfoPrint Manager - Page 304

Calibrating a printer using the Halftone Management System

Page 304 highlights

Verify the calibration by measuring the black, gray, and white patches. If they agree within 0.02 OD to the reflection reference values on the card, density is accurately calibrated. If not, repeat this process until the measurements are accurate. To find out how you can calibrate and set output appearances, see "Calibrating a printer using the Halftone Management System." Calibrating a printer using the Halftone Management System The Halftone Management System lets you calibrate each of your printers to achieve a consistent tone curve for a set of generic halftone screens. The system also lets you define additional calibrations for specific paper types. When calibrated the dot gain for a fifty percent dot will be nominally zero percent for Standard appearance, fourteen percent for Highlight Midtone appearance, and thirty-four percent for Dark appearance. To use this tool to calibrate your printers, do these procedures in sequence: 1. "Defining InfoPrint Manager servers to the Halftone Management System client" 2. "Defining custom patch sets" 3. "Calibrating a halftone" on page 287 4. "Measuring optical density with a densitometer" on page 290 Defining InfoPrint Manager servers to the Halftone Management System client The first time you start the Halftone Management System client, you will see an empty window. You must connect to the InfoPrint AIX server to see a list of the printers that are available for calibration: 1. From the Halftone Management System (or Main) window, select the Edit → Servers option. 2. From the Servers window, select the File → Add Server option. 3. In the Server Properties window, fill in the Server Name field with the symbolic server name, and the Hostname field with either the explicit name of the server or the server's dotted decimal notation IP address. For example, the Server Name field value could be sage, while the Hostname field value could be either sage.penn.boulder.ibm.com or 9.99.43.73 . 4. Return to the Main window and either use left mouse button to double-click on each printer or highlight the printer and press Enter to display its output screens. The Main window displays all printers defined to the InfoPrint server to which you are connected, but only the IPDS printers contain screens that can be calibrated. Defining custom patch sets A patch set is a step wedge file that has patches with different shades of gray. One patch set has been defined (patches11 ). It has eleven uniformly-stepped grays. To define additional patch sets, use this procedure: 1. From the Halftone Management System window, select the Edit → Patch Sets option. 286 InfoPrint Manager for Windows: Procedures

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Verify the calibration by measuring the black, gray, and white patches. If they
agree within 0.02 OD to the reflection reference values on the card, density is
accurately calibrated. If not, repeat this process until the measurements are
accurate.
To find out how you can calibrate and set output appearances, see “Calibrating a
printer using the Halftone Management System.”
Calibrating a printer using the Halftone Management System
The Halftone Management System lets you calibrate each of your printers to
achieve a consistent tone curve for a set of generic halftone screens. The system
also lets you define additional calibrations for specific paper types. When
calibrated the dot gain for a fifty percent dot will be nominally zero percent for
Standard
appearance, fourteen percent for
Highlight Midtone
appearance, and
thirty-four percent for
Dark
appearance.
To use this tool to calibrate your printers, do these procedures in sequence:
1.
“Defining InfoPrint Manager servers to the Halftone Management System
client”
2.
“Defining custom patch sets”
3.
“Calibrating a halftone” on page 287
4.
“Measuring optical density with a densitometer” on page 290
Defining InfoPrint Manager servers to the Halftone
Management System client
The first time you start the Halftone Management System client, you will see an
empty window. You must connect to the InfoPrint AIX server to see a list of the
printers that are available for calibration:
1.
From the
Halftone Management System
(or
Main
) window, select the
Edit
Servers
option.
2.
From the
Servers
window, select the
File
Add Server
option.
3.
In the
Server Properties
window, fill in the
Server Name
field with the
symbolic server name, and the
Hostname
field with either the explicit name of
the server or the server's dotted decimal notation IP address.
For example, the
Server Name
field value could be
sage
, while the
Hostname
field value could be either
sage.penn.boulder.ibm.com
or
9.99.43.73
.
4.
Return to the
Main
window and either use left mouse button to double-click
on each printer or highlight the printer and press
Enter
to display its output
screens. The Main window displays all printers defined to the InfoPrint server
to which you are connected, but only the IPDS printers contain screens that can
be calibrated.
Defining custom patch sets
A patch set is a step wedge file that has patches with different shades of gray. One
patch set has been defined (
patches11
). It has eleven uniformly-stepped grays.
To define additional patch sets, use this procedure:
1.
From the
Halftone Management System
window, select the
Edit
Patch Sets
option.
286
InfoPrint Manager for Windows: Procedures