Make note of the width and height of your image in pixels (pixel
dimension)
Unclick
on the "Resample Image" box. This will not allow the Pixel Dimensions
to change
Change
the value of the resolution field to 355 pixels/inch
Illustrator
10
To determine
the resolution of an image placed in Illustrator:
Go
to Window>Document Info
Click
on small arrow at the right of the Document Window info.
Click
on Embedded Images
Adobe Illustrator is an object layout
application. They handle two different kinds of object: Vector and
Raster.
Vectors are defined mathematically. Vectors are resolution Independent,
so they can be scaled to any size with absolutely no loss of quality.
Raster images are fixed resolution bitmaps with a set pixel dimensions.
Scaling a 2“ by 2” raster image to 4” by 4”
reduces the number of pixels per inch by 50%.
Pay careful attention NOT TO SCALE A RASTER OBJECT so that the print
output is less than 300 PPI. For a raster image to print properly, it
must be provided at at least 300 pixels per inch (ppi or dpi) at the final output
dimension. *355 ppi is better!
Unclick
on the "Resample Image" box. This will not allow the Pixel Dimensions
to change
