User`s guide
PowerRIP 2000 Manual
iProof Systems, Inc.
18
Specify Settings - Images Tab
Halftone Information - Select Preserve Halftone Information when you want to retains the halftone
(screening) information
- Select Use Device Dependent Color to use the PowerPDF 2000 color corrected
information when creating the PDF.
- Select Convert CMYK images to RGB if you want RGB images when the PDF is
created.
Transfer Function - Remove - will remove the curves in the file when making the PDF. When the PDF
is opened in Acrobat the change in the file can be seen on the screen.
- Apply - will use the curves in the file when making the PDF. When the PDF is
opened in Acrobat the change in the file can be seen on the screen.
- Preserve - uses the curves in the file when making the PDF. When the PDF is
opened in Acrobat the change in the file cannot be seen on the screen.
Under-Color Removal - Remove - removes UCR when creating the PDF.
(UCR) - Preserve - retains the UCR information when creating the PDF.
Image Sub Sampling - None - no sub sampling will occur.
- Subsample - reduces the amount of data in the image to no more than what the PDF
needs.
- Resolution should be defined when doing Average. Select the lowest resolution
possible. Selecting a high resolution will greatly increase the time it takes to process
and print the file.
Image Compression - None - no compression will occur.
- JPEG - compression creates a much smaller size because it eliminates data. JPEG
compression can affect image quality.
- ZIP - compression does not remove data to reduce the file size so it does not affect
the image quality.
CCITT (Monochrome - CCITT is a compression method for black and white images made by paint pro-
Images Only) grams and any image scanned with an image depth of 1 bit. There is no loss in
image quality with this compression method.
OPI/Overprint - Preserve OPI Comment - retains the information needed to replace an FPO (For
Placement Only) image with a high resolution image located on a server that sup-
ports OPI.
- Preserver Overprint Settings - retains the overprint settings in the file being con
verted to a PDF.