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Old Aug 18, 2004, 2:19 PM   #11
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In the specs I see the the 640 is rated for 400 dpi, while the newer / hotter 730 is only rated at 300 dpi. Is there a need for concern?? I've spoken to a couple of folks who are using the 730 and swear by it??
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Old Sep 7, 2004, 11:06 AM   #12
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Dye-sublimation printers lay down color in continuous tones one color at a time, instead of dots of ink. As a resultthe HiTi resolution of 300 dpi is equivalent to 4,800 dpi for an Ink Jet printer and400 dpi is equivalent to 6,400 dpi.

Now if we do the Math for a 4"x6" print

@300 dpi: (4800x4800)x(4x6)=553 Mpix image (23 Mpix per sq inch)

@400 dpi: (6400x6400)x(4x6)=983 Mpix image (41 Mpix per sq inch)

Although I have not compared the two images under a microscope, it would not surprise me that it took a 15x magnification to see a difference.

At these resolutions,to the naked eye, the Hiti 730 and 640 pictures are indistinguishable. If you want the added flexibility of the 730, you donothave to be concerned about the difference between 300 dpi and 400 dpi.

i.e. I have both the 640 and 730 printers.
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