Roland PC-12 User Manual download pdf (Page 24)

Dither type

This is displayed invariably when Print Mode is set to Angled Screen.

Screen

This becomes settable in an interlocking fashion with the foregoing Dither type item, and displays a dialog box

for defining a native PostScript screen.

Perform Color Correction

Checking this setting activates the color correction settings. If this setting is not checked, incoming jobs are

assumed to already have color correction.

ICC input profile

Input profiles are used to convert the image into a neutral color space. Once the image is in a neutral color

space, then the output profile is used to convert the image into the color space of the output device. To add an

ICC input profile from another source, click the Add button. Three types of ICC input profiles can be specified:

CMYK ICC input profile

The CMYK input profile defines all elements of a job that are in CMYK color mode. If your job is in the

RGB color mode, then you should leave the CMYK input profile set to the Generic setting. If your file

contains images in both the CMYK and the RGB mode, then the CMYK input profile will be applied to the

CMYK images and the RGB input profile will be applied to the RGB images. If your image is in the

CMYK color mode, then your file was previously separated for output to a specific output device.

Whenever possible, use the profile for the device to which the elements were separated, as the CMYK

input profile. If you do not have the profile, try similar profiles or profiles for common ink sets (such as

CMYK SWOP, or High End SWOP). If you are trying to match Pantone colors, it may also be appropriate

to select High End SWOP as your CMYK input profile, because Pantone Process CMYK values were

designed for output to the SWOP ink set.

RGB ICC input profile

The RGB ICC input profile defines the RGB source for all of your RGB files. An RGB input profile can be

for either a monitor or a scanner. If you scanned your file directly to a folder, it is best to select your

scanner calibration as the RGB input profile. If you have done any on- screen color correction, you

should select your monitor as the RGB input profile. If you do not have a monitor profile, it is generally

safe to select the Generic ICC input profile. The Generic profile assumes that you have a Trinitron

monitor with a temperature of D65 and a gamma of 1.8. Selecting the correct RGB source will insure that

the RGB data you see on-screen will be matched to the output printer.

Gray ICC input profile

The Gray ICC input profile defines the Grayscale source for all of your grayscale files. This may refer to

either a grayscale scanner or a grayscale monitor.

ICC output profile

ICC output profile- Output profiles are created for the combination of ink and media, and resolution and dither

type of your output device. When selecting a profile, be sure to select the profile that matches these criteria.

For output devices that print at multiple resolutions, RIP Software provides profiles for each of those

resolutions. Choosing a profile with the wrong resolution will severely effect the output. Profiles with different

dither types will not greatly effect your output; however, they may cause slight shifts in color. To add an ICC

output profile from another source, click the Add button. Click the Info button for information pertaining to the

ICC output profile that has been chosen under Profile.

Bitmap/Vector Rending Intent

Rendering intent- before a file can be RIPed, its ICC profile must be selected so that the RGB color

space of the file can be mapped or translated into to CMYK colorspace. How the colorspace gets

mapped is determined by the color rendering intent that you select. The rendering intent selected in the

Bitmap rendering field will be applied to bitmap images in your job file. The rendering intent selected in

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Roland PC-12 User Manual Page 24

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