How important is # of nozzles?

  • Thread starter Thread starter TowXWang
  • Start date Start date
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TowXWang

Hello.

I was comparing the specifications of two Canon printers, i550 and i850,
and was wondering about the differences between the two. The only
significant difference I could discern is that the former has 1088
nozzles, and the latter has 1600. How important is this?

Are nozzles arranged in a single row or column in the printing head, or is
it like the rectangular matrix of "impact points" on the old dot-matrix
printers?

Given the more than 50% difference in number of nozzles, how can both
printers claim the same dpi resolutions? (600x600 black, 4800x1200 color)
Is it because if you have less nozzles, the printer head has to go back
and forth more times across the paper to print the same image at the same
resolution, hence the lower speed of the i550?

Thanks for any clarifications!

Tow



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-------------------------------------------------------------------------------
The FAQ files v1.21 for the Tropez, and v1.01 for the TBS-2001 sound
boards can be obtained from:
http://www.landfield.com/faqs/PCsoundcards/
http://www.cs.colorado.edu/~mccreary/tbeach/faq.html
http://www.pasteur.fr/infosci/FAQ/PCsoundcards/
http://faqs.org/faqs/by-newsgroup/comp/comp.sys.ibm.pc.soundcard.misc.html
-------------------------------------------------------------------------------
 
On Tue, 30 Sep 2003 23:23:31 GMT, (e-mail address removed) wrote:

=>Given the more than 50% difference in number of nozzles, how can both
=>printers claim the same dpi resolutions? (600x600 black, 4800x1200 color)

That has to do with the mechanical advance of the printhead
both horizontally and vertically. Printer resolution
numbers are misleading in any case. Don't sweat it. What
matters is how good the print looks to you, and how long it
will resist the assaults of light, water, and airborne
chemicals.

If you want to begin to understand something about printer
"resolution", think pixels. A colour pixel will take up the
same space as a b/w pixel - hence the higher "resolution"
claimed for colour printing. The colour pixel is made up of
smaller dots of ink that occupy the same space as the black
pixel. So there will more coloured dots per inch (including
the black dots, BTW), and the manufacturer can claim a
higher "resolution," but visually it doesn't make a damn
bit of difference. The bigger numbers just make you feel
good.

HTH
 
That has to do with the mechanical advance of the printhead
both horizontally and vertically. Printer resolution
numbers are misleading in any case. Don't sweat it. What
matters is how good the print looks to you, and how long it
will resist the assaults of light, water, and airborne
chemicals.

If you want to begin to understand something about printer
"resolution", think pixels. A colour pixel will take up the
same space as a b/w pixel - hence the higher "resolution"
claimed for colour printing. The colour pixel is made up of
smaller dots of ink that occupy the same space as the black
pixel. So there will more coloured dots per inch (including
the black dots, BTW), and the manufacturer can claim a
higher "resolution," but visually it doesn't make a damn
bit of difference. The bigger numbers just make you feel
good.

HTH
Click to expand...


Hello. Thanks a lot for the explanation.

The lingering question then remains, do the number of nozzles matter? I'm
assuming each nozzle spurts out a microscopic droplet of ink to print one
colored dot. Is this more a matter of

a) (what in the world of monitors is called...) dot pitch, where more
nozzles aimed into a given surface area will produce a sharper image (less
distance between the ink dots)

or

b) speed, where given a fixed surface area and a particular resolution,
more nozzles mean more ink dots (pixels) printed at any given pass of the
printer head across the paper.

Thanks again if you can provide further insight!

Tow




If you see a 'X' in my address, please remove it before e-mailing me.
Do not add me to any MicroSoft address book; I do not want your viruses.
I track and report spam; do not send me junk mail.

-------------------------------------------------------------------------------
The FAQ files v1.21 for the Tropez, and v1.01 for the TBS-2001 sound
boards can be obtained from:
http://www.landfield.com/faqs/PCsoundcards/
http://www.cs.colorado.edu/~mccreary/tbeach/faq.html
http://www.pasteur.fr/infosci/FAQ/PCsoundcards/
http://faqs.org/faqs/by-newsgroup/comp/comp.sys.ibm.pc.soundcard.misc.html
-------------------------------------------------------------------------------
 
More nozzles allow faster speeds. As one set of nozzles is heating another
set is cooling, then repeats the process. The nozzles in sets the faster
you can print. You can't have them all printing at the same time.


Hello. Thanks a lot for the explanation.

The lingering question then remains, do the number of nozzles matter? I'm
assuming each nozzle spurts out a microscopic droplet of ink to print one
colored dot. Is this more a matter of

a) (what in the world of monitors is called...) dot pitch, where more
nozzles aimed into a given surface area will produce a sharper image (less
distance between the ink dots)

or

b) speed, where given a fixed surface area and a particular resolution,
more nozzles mean more ink dots (pixels) printed at any given pass of the
printer head across the paper.

Thanks again if you can provide further insight!

Tow




If you see a 'X' in my address, please remove it before e-mailing me.
Do not add me to any MicroSoft address book; I do not want your viruses.
I track and report spam; do not send me junk mail.

-------------------------------------------------------------------------- -----
The FAQ files v1.21 for the Tropez, and v1.01 for the TBS-2001 sound
boards can be obtained from:
http://www.landfield.com/faqs/PCsoundcards/
http://www.cs.colorado.edu/~mccreary/tbeach/faq.html
http://www.pasteur.fr/infosci/FAQ/PCsoundcards/
http://faqs.org/faqs/by-newsgroup/comp/comp.sys.ibm.pc.soundcard.misc.html
--------------------------------------------------------------------------
Click to expand...
-----
 
More nozzles faster print speeds
Hello.

I was comparing the specifications of two Canon printers, i550 and i850,
and was wondering about the differences between the two. The only
significant difference I could discern is that the former has 1088
nozzles, and the latter has 1600. How important is this?

Are nozzles arranged in a single row or column in the printing head, or is
it like the rectangular matrix of "impact points" on the old dot-matrix
printers?

Given the more than 50% difference in number of nozzles, how can both
printers claim the same dpi resolutions? (600x600 black, 4800x1200 color)
Is it because if you have less nozzles, the printer head has to go back
and forth more times across the paper to print the same image at the same
resolution, hence the lower speed of the i550?

Thanks for any clarifications!

Tow



If you see a 'X' in my address, please remove it before e-mailing me.
Do not add me to any MicroSoft address book; I do not want your viruses.
I track and report spam; think twice before sending me junk mail.

I repeat: if you use any e-mail software developed by Microsoft,
especially "Outlook", DO NOT ADD ME TO YOUR ADDRESS BOOK or any type of
mailing list. I do not want to receive copies of viruses that WILL SURELY
INFECT YOUR SYSTEM.

-------------------------------------------------------------------------- -----
The FAQ files v1.21 for the Tropez, and v1.01 for the TBS-2001 sound
boards can be obtained from:
http://www.landfield.com/faqs/PCsoundcards/
http://www.cs.colorado.edu/~mccreary/tbeach/faq.html
http://www.pasteur.fr/infosci/FAQ/PCsoundcards/
http://faqs.org/faqs/by-newsgroup/comp/comp.sys.ibm.pc.soundcard.misc.html
--------------------------------------------------------------------------
Click to expand...
-----
 
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