Ricoh InfoPrint Pro C900AFP InfoPrint Manager - Page 44
Calibrating a printer using the Halftone Management System
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press either the FUNCTION or the ENTER key. Decrease (FUNCTION) or increase (ENTER) the value until the correct number is displayed. When finished, release the keys and press Enter. SET HI is displayed momentarily, followed by Y.YYH , where the Y.YY part of the value should be the black patch ORTHO value from the Reflection Reference card. 5. If Y.YY matches the black patch ORTHO value for your reflection reference, press the ENTER key. If Y.YY does not match, hold down the ZERO key and press either the FUNCTION or the ENTER key. Decrease (FUNCTION) or increase (ENTER) the value until the correct number is displayed. When finished, release the keys and press Enter. 6. When you see READ WHT displayed, center the circle on the base of the densitometer over the white patch (the one labeled "1") on the Reflection Reference. Push the head down and then release it to establish the white patch Optical Density. If INVALID displays, repeat the measurement. 7. When you see READ BLK displayed, center the circle on the base of the densitometer over the white patch (the one labeled "3") on the Reflection Reference. Push the head down and then release it to establish the black patch Optical Density. If INVALID displays, repeat the measurement. Verify the calibration by measuring the black, gray, and white patches. If they agree in 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 servers to the Halftone Management System client" 2. "Defining custom patch sets" on page 31 3. "Calibrating a halftone" on page 31 4. "Measuring optical density with a densitometer" on page 33 Defining InfoPrint 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. 30 InfoPrint Manager for AIX: Procedures