1200 x 2400 DPI vs 2400 x 1200 DPI

[Brian Thompson]

Do these two statements mean different things.....and if so
what do they mean... thanks

 

[CWatters]

Yes. The resolution (Dots Per Inch) is different in the x and y axis.

For example if you were talking about two similar printers or scanners a)
and b) then you could say:

Printer a) has better resolution in the y axis (2400 DPI) than it does in
the x axis (1200 DPI) and

Printer b) has better resolution in the x axis (2400 DPI) than it does in
the y axis (1200 DPI).


You said "1200 x 2400 DPI vs 2400 x 1200 DPI" however... If you had said
"1200 x 2400 vs 2400 x 1200" (eg without the DPI) then you could have been
talking about two images - one in landscape format and the other portrait
format.

Note: "DPI" figures do not say anything about the size or shape of an image.
For example you could have an image that is 640 x 640 pixels and print it
out with a printed resolution of 1200 x 2400 DPI the result would be a
picture that is very small - eg 0.53" x 2.67"

Colin

 

[Yianni]

and also given resolutions don't rely to the "real" resolution. I have seen
2400x1200 printers that print worse than 720x720.

--

 

[Brian Thompson]

The reason I'm asking is to compare the print quality of (2) printers

1) the "HP7350....which says
print quality,color Up to 4800 x 1200 optimized dpi (on premium photo
papers) and 1200 x 1200 input dpi
when printing from a computer

2)the "HP OfficeJet 6110 all-in-one".....which says
print quality,color Up to 1200 x 1200 dpi, up to 4800 optimized dpi
using HP Premium Photo paper color

Do these mean different things ..... and if so is one much better than the
other....thanks again for any help help.

 

[CWatters]

The reason I'm asking is to compare the print quality of (2) printers

1) the "HP7350....which says
print quality,color Up to 4800 x 1200 optimized dpi (on premium photo
papers) and 1200 x 1200 input dpi
when printing from a computer

2)the "HP OfficeJet 6110 all-in-one".....which says
print quality,color Up to 1200 x 1200 dpi, up to 4800 optimized dpi
using HP Premium Photo paper color

Do these mean different things ..... and if so is one much better than the
other....thanks again for any help help.

You would have to ask HP. Some companies provide features that claim to
enhance resolution artificially. This is particularly true of a few digital
camera makers. They claim an "effective resolution" that is higher than the
real resolution of the sensor. I wonder what "optimised dpi" really means
for example?

When you get upto this kind of resolution it's impossible to make a
comparison on the specs alone. The only way to decide is to create or find
your own test image on the web and then get prints made on both printers.
See if your local HP agent can do this for you. The chances are you will
prefer one to the other but this may not be the one with the highest spec on
paper. You will probably find the colours look more realistic on one or
perhaps the contrast will be better on the other, the detail better on a
third etc

 

[Bob Headrick]

The reason I'm asking is to compare the print quality of (2) printers

1) the "HP7350....which says
print quality,color Up to 4800 x 1200 optimized dpi (on premium photo
papers) and 1200 x 1200 input dpi
when printing from a computer

2)the "HP OfficeJet 6110 all-in-one".....which says
print quality,color Up to 1200 x 1200 dpi, up to 4800 optimized dpi
using HP Premium Photo paper color

Do these mean different things ..... and if so is one much better than the
other....thanks again for any help help.

They mean the same thing. The Officejet 6110 ships with a #56 black cartridge
and a #57 color cartridge. The Photosmart 7350 ships with a #57 color
cartridge and a #58 photo cartridge. The 7350 may also include a #56 black
cartridge in some markets - better check your specific case.

Either of these can use either the #56/57 combination which is optimized for
text and color graphics or can use the #57/58 combination for best photo
capability. A more comparable all-in-one unit to compare to the Photosmart
7350 would be the PSC 2210. Like the others it can use different combinations
of cartridges. The PSC 2210 (or its later version, the PSC 2410) has photo
card slots like the Photosmart 7350 for printing directly from camera cards.

When using the same combination of cartridges and paper types each of the
printers should give nearly identical results.

Regards,
Bob Headrick, not speaking for my employer HP