Adobe InDesign CS4 - Manual (Page 431)

423 USING INDESIGN CS4
Transparency effects
Use the View menu to quickly change transparency display between Fast Display, Typical Display, and High Quality
Display.
See also
“ Control graphics’ display performance ” on page 364
Stop displaying transparency
To improve display performance, you can turn off the display of transparency. Turning off transparency on screen
doesn’t turn off transparency for printing or exporting the file.
❖ Choose View > Display Performance > Fast Display.
Removing white box effect in documents with transparency
In some instances, a white box or ghost border appears where a transparency effect is applied, usually in documents
that contain drop shadows or gradients. This problem may occur if the transparency effect interacts with a spot color.
To fix this problem, you can either avoid using spot colors with transparency or you can turn on overprinting.
To view and print a PDF document without the white box effect, in Acrobat 9, choose Advanced > Print Production
> Output Preview, and then choose Simulate Overprinting.
If you’re sending the document to a printer that’s experiencing this white box effect, ask the service provider to turn
on PostScript Overprint at the RIP. If this doesn’t work, you can flatten the transparency and select the Simulate
Overprint option before you send the file. In InDesign, this option is found on the Output panel of the Print dialog
box when you select the Composite CMYK option.
Blending colors
Specify how colors blend
Blend the colors between two overlapping objects by using blending modes. Blending modes let you vary the ways in
which the colors of stacked objects blend.
1 Select one or more objects or a group.
2 Do one of the following:
• In the Effects panel, choose a blending mode, such as Normal or Overlay, from the menu.
• In the Transparency area of the Effects dialog box, choose a blending mode from the menu.
Blending mode options
The blending modes control how the base color, the underlying color in the artwork, interacts with the blend color, the
color of the selected object or group of objects. The resulting color is the color resulting from the blend.
Normal Colors the selection with the blend color, without interaction with the base color. This is the default mode.
Multiply Multiplies the base color by the blend color. The resulting color is always a darker color. Multiplying any
color with black produces black. Multiplying any color with white leaves the color unchanged. The effect is similar to
drawing on a page with multiple magic markers.
Updated 18 June 2009