Xerox DocuColor 12 Printer with Fiery X12 产品宣传页

Ideally, each raster image should be saved at the actual size it will be placed into the 
document and at the optimal resolution for the print device. If the image resolution is 
correct for the print device, there is no quality advantage to be gained by scaling an 
image down to a percentage of its actual size. If you scale a large image down to a 
percentage of its actual size, you incur unnecessary file transfer time because the image 
data for the entire large image is sent to the printer. If an image is placed multiple times 
at markedly different sizes in a document, save a separate version of the image at the 
correct size for each placement.

If you need to place an image at greater than 100% in a document, remember that the 
output image resolution is affected. For example, if you scale a 200 ppi image to 
200%, the image is printed at 100 ppi.