Re: Printer DPI

"Jim" <j.n@xxxxxxxxxx> wrote in message news:boZMh.10290$Um6.4783@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx

<pjmoriarty@xxxxxxxxx> wrote in message news:1174688134.429862.5830@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Discussion Preface: a given printer is listed as having a dpi of
2400dpi x 1200dpi

Question: If an inch is already a square unit of measure, what is the
meaning of the second value?

2400dpi would mean (by my logic) that 2400 dots may fit in a given
square inch...why then also a listing of 1200dpi?

Are dots rectangular? are they stacked like bricks...allowing for more
layers on the vertical axis of a given squared inch than on the
horizontal?

If anyone is familiar with these conventions, please help. I'm finding
this to be rather curious.

PJ Moriarty

It means 2400 columns and 1200 rows of dots in one square inch. Thus, a given square inch has 2400 times 1200 dots.
Pixels are square. Dots are round.
Jim



Which is 2,880,000 dots per printer inch. That is a lot of dots in such a small space. But, then since the HP's at least can need 36 dots of ink to make on color I guess those 2,880,000 dots go pretty fast.

=(8)

.

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