Relationship between Screen and Printer

Can I know how many screen's pixels is in the one millimeter(meter) of printed document(in paper)?
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vterekhAsked:
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ITugayConnect With a Mentor Commented:
Hi vterekh,
yes, it depend from DPI.

600 DPI / 25.4 = 23.622 pixel per mm

100 pix  / 23.622 = 4 mm

Be carefull, sometimes vertical and horizontal resolutions are different. Let say horizontal resolution can be 1200 but vertical can be only 320 DPI.

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Igor.
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ITugayCommented:
Hi vterekh,
it depends from printer resolution and size of document.

Let say that page width 210mm and printers DPI = 600.

210mm / 25.4 (1") = 8.26"
8.26" * 600DPI = 4960 pixels. Width of document in pixels.

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Igor.
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vterekhAuthor Commented:
Igor

For example I draw the line on the printer canvas with size 100 pixels whether it length on the paper will depent on printer's DPI?

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vterekhAuthor Commented:
Thanks, Igor

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Vasily
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ITugayCommented:
Hi vterekh,

another way is to look at TPrinter property
PageWidth
PageHeight

Indicates the height and width in pixels of the currently printing page.
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Igor.
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