Printing knowledge pool 9D
Set correct resolution for image before print
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A: Make sure your photos, scanned images, and other bitmaps have the appropriate resolution. This is necessary to ensure the quality of the output files (the resolution is independent of the PostScript vector and they will print at the output device's maximum resolution). . The following are some of the standard output format resolutions.
At 72dpi, when you scale an image for a webpage, it is best to ignore the Print Size section of Photoshop's Resize Image dialog box, as long as you work with pixels.
Newspapers have a scanning resolution of 125-170 dpi. For printed images, the resolution is set to 1.5 to 2 times the network cable (lpi). (2x will make the image more flexible when zoomed in). 85lpi for newspaper printing.
The magazine/propaganda product uses a scanning resolution of 300 dpi because the magazine is printed with 133 or 150 lpi.
High-quality books use a scan resolution of 350-400 dpi because most print-ready books use 175 to 200 lpi.
Wide-format printing uses a scanning resolution of 75-150 dpi. For large-format images (such as posters) viewed from afar, low resolution is acceptable, and the low scale mainly depends on the viewing distance: the menu after the cashier is better than The banner hanging from the roof has a higher resolution.