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     áòèé÷ :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

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Re: filmscanners: pixels, printer dots, etc



You have hit on the key difference between display resolution of ppi and print 
resolution, but there is an additional point as well:

Yes, the number of dots used by the printer to print the display pixel is set 
by the print resolution.

But further, each printer dot is produced by a number of spots - I recall this 
being discussed in a chapter of a book I read recently, with diagrams showing 
the dot-spot relationship, but I don't recall which book.  If it comes to me 
I'll let you know.

Maris

----- Original Message ----- 
From: "Ken Durling" <kdurling@earthlink.net>
To: <filmscanners@halftone.co.uk>
Sent: Tuesday, November 13, 2001 11:38 AM
Subject: filmscanners: pixels, printer dots, etc


| Ok, I have I think I simple question, stemming out of my study of
| Wayne Fulton's scanning tips.  Just getting clear, so forgive me if
| it's a stupid question. 
| 
| On page 67 of that book he shows a tiny 32 pixel image scaled to 5
| dpi.  It's printed as a 6.4 inch graphic with pixels that are,
| obviously, 1/5 inch in size.  My question is, what does this say about
| print resolution?  The printer is obviously using a certain number of
| dots to produce one pixel.  Is this number of dots specified simply by
| selecting the print resolution in the printer driver menu?  
| 
| Thanks
| 
| 
| Ken Durling
| 
| 
| 
| Photo.net portfolio: 
| 
| http://www.photo.net/shared/community-member?user_id=402251
| 




 




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