In article ,
"JonH" wrote:
Indeed many printers have higher resolution than 280 ppi (dpi?),…
DPI and PPI are not the same thing.
Most consumer inkjet printers advertise their resolution in terms of DPI, with 14,000 DPI and 28,800 DPI both being quite common. However, a printer "dot" can only be one solid color–solid cyan, solid magenta, solid yellow, or solid black, with no in-between colors and no shades of color possible.
It takes many, many printer dots to make up one single pixel. A scanned image is correctly measured in terms of pixels, not dots. If a printer advertises 28,800 dots per inch, that does not mean it can print an image scanned at 28,800 pixels per inch!
Effectively, image resolutionsbove 300 pixels per inch or so do not create higher-quality printouts on consumer inkjet printers.
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