Comments on: Get the right resolution (ppi) when printing http://designblog.reichelgraphicdesign.com/get-the-right-resolution-ppi-when-printing/03-2008/ Tips on graphic design and website design services Fri, 19 Aug 2011 12:12:55 -0400 hourly 1 http://wordpress.org/?v=3.1.3 By: Gary http://designblog.reichelgraphicdesign.com/get-the-right-resolution-ppi-when-printing/03-2008/comment-page-1/#comment-17 Gary Thu, 05 Jun 2008 16:44:18 +0000 http://designblog.reichelgraphicdesign.com/get-the-right-resolution-ppi-when-printing/03-2008/#comment-17 Great question!!! As you noted, line screen is typically used when going to press; and is still used by printers today. Line screen (lpi) is "similar" to ppi by the fact the ppi and line screen are related to the resolution. Although the typical user will not set line screen because a service provider will usually request a file at a certain resolution. In setting the ppi, the user is providing a certain line per inch. Also, ppi is used with resolution-dependent images (raster images )—the number of pixels that occupy a given space must be defined. Whereas, ppi is not used with resolution-independent images (vector images). Typically, you'll want 1.5-2 times the line screen (lpi) in pixels per inch (ppi). Here is a chart related to line screen and ppi: Newspaper ad: (85lpi) 130-170 ppi Average Magazine & Brochure: (133 lpi) 200-266 ppi High End Magazine & Brochure: (177 lpi) 265-350 ppi Annual Report: (177 lpi) 265-350 ppi Fine Art and Coffee Table Books: (200lip) 300-400 ppi Since we are talking about resolution, I want to add another definition related to resolution, dots per inch (dpi). Dots per inch (dpi) is used when referring to number of dots an output device is able to produce within an inch, representing the resolution of the device. This relates to the image when printing. If an output devise prints at a higher resolution (dpi) and the image does not meet the minimum dots per inch, you loose quality, or the image will look "pixelated". Great question!!!
As you noted, line screen is typically used when going to press; and is still used by printers today.

Line screen (lpi) is “similar” to ppi by the fact the ppi and line screen are related to the resolution. Although the typical user will not set line screen because a service provider will usually request a file at a certain resolution. In setting the ppi, the user is providing a certain line per inch. Also, ppi is used with resolution-dependent images (raster images )—the number of pixels that occupy a given space must be defined. Whereas, ppi is not used with resolution-independent images (vector images).

Typically, you’ll want 1.5-2 times the line screen (lpi) in pixels per inch (ppi).

Here is a chart related to line screen and ppi:

Newspaper ad: (85lpi) 130-170 ppi

Average Magazine & Brochure: (133 lpi) 200-266 ppi

High End Magazine & Brochure: (177 lpi) 265-350 ppi

Annual Report: (177 lpi) 265-350 ppi

Fine Art and Coffee Table Books: (200lip) 300-400 ppi

Since we are talking about resolution, I want to add another definition related to resolution, dots per inch (dpi). Dots per inch (dpi) is used when referring to number of dots an output device is able to produce within an inch, representing the resolution of the device. This relates to the image when printing. If an output devise prints at a higher resolution (dpi) and the image does not meet the minimum dots per inch, you loose quality, or the image will look “pixelated”.

]]> By: Craig L-P http://designblog.reichelgraphicdesign.com/get-the-right-resolution-ppi-when-printing/03-2008/comment-page-1/#comment-16 Craig L-P Thu, 05 Jun 2008 14:31:48 +0000 http://designblog.reichelgraphicdesign.com/get-the-right-resolution-ppi-when-printing/03-2008/#comment-16 Gary, when I was in printing back in the early 90s we used to talk about "line screens". For example, a newspaper might be a 65 or 80 line screen, and a magazine a 133 line screen. Is this ppi similar to that? Craig L-P Gary, when I was in printing back in the early 90s we used to talk about “line screens”. For example, a newspaper might be a 65 or 80 line screen, and a magazine a 133 line screen. Is this ppi similar to that?
Craig L-P

]]>