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	What is pixels per inch? - a definition from Whatis.com - see also: ppi
		In computers, pixels per inch (ppi) is a measure of the sharpness (that is, the density of illuminated points) on a display screen.
		However, the displayed resolution of pixels (picture elements) that is set up for the display is usually not as fine as the dot pitch.
		The term "dots per inch" (dpi), extended from the print medium, is sometimes used instead of pixels per inch.
	whatis.techtarget.com /definition/0,,sid9_gci214320,00.html (196 words)

	ShortCourses-Pixels per Inch
		As a result, as the size increases, the pixels per inch decrease because the same number of pixels are spread over a wider area.
		There are problems printing with less than 200 pixels per inch and with resampling to increase the number of pixels so you’ll have to experiment to see which works best for a particular image.
		Pixels begin to show when the print is enlarged to a point where the dots per inch (dpi) fall too low.
	www.shortcourses.com /sensors/sensors1-15.html (1183 words)

	Smart Computing Encyclopedia Entry - pixels per inch (ppi) (Site not responding. Last check: )
		In computing, ppi is a number used to measure the sharpness of images, and it is often used to describe a measurement that is associated with devices, such as monitors or printers, which deal with image resolution.
		The larger the ppi an image has, the sharper and crisper it is. Conversely, the lower the ppi, the duller and blurrier the graphics.
		The dot pitch determines the absolute limit of the possible pixels per inch for a display.
	www.smartcomputing.com /editorial/dictionary/detail.asp?guid=&searchtype=1&DicID=18574&RefType=Encyclopedia (287 words)

	Resolution_Digital_Images
		Viewing distance has a great influence on the appearance of pixels in an image and an image that has a pixel density of 100 pixels per inch may look course when viewed at a distance of 12 inches but at 20 feet we will not be aware of pixels at all.
		Here more pixels per inch will always look better but in practice it is hard to tell the difference between 320 ppi and 400 ppi because 320 pixels per inch is close to the resolution threshold of the paper (put a loupe down on a Fujix print and check it out for yourself).
		Pixels have no inherent size and so the resolution of digital images is always expressed by the number of pixels per inch (or millimeter) at a given image size.
	www.varis.com /Technique/Resolution_Digital_Images.html (3312 words)

	CSS1 - pixels 'n points (Site not responding. Last check: )
		The relationship of pixels to points depends on the number of pixels per inch, which is typically some 'standard' value corresponding to default screen fonts.
		When pixels per inch corresponds to your display, the font-size and line-height in the two columns should correspond closely (exactly when your display is 72 or 96ppi).
		On a display where 96 pixels equals one inch, both the baseline to baseline distance and the font size should be the same as those in the left column.
	www.hpaa.com /css1/pxnpts.asp (232 words)

	Photoshop for Astrophotographers
		Pixels per inch specifies the real optical resolution of the file: the more pixels per inch you have, the greater the true resolution.
		Lines per inch is the terminology used in offset printing, which uses a line screen to break up continuous tone material into halftone dots.
		Instead, knowing that 300 pixels per inch will produce excellent output with these printers, we would divide the true optical resolution of the original file by 300 pixels per inch on the short side of the print and see that we had enough true resolution to output 9 inches (2700 PPI / 300 PPI).
	www.astropix.com /PFA/SAMPLE5/SAMPLE5.HTM (1700 words)

	The First Fundamental Concept about Printers and Video Screens
		We may hear scanning resolution called spi (Samples Per Inch), and that is indeed what it is. We often hear image resolution called ppi (Pixels Per Inch), and that is indeed what it is. The spi and ppi terms are correct.
		Pixels are conceptually a kind of colored dot too, and resolution has always been called dpi, for years before we had inkjet printers.
		If the usage context pertains to inkjet printer ink dot ratings, dpi means "ink dots per inch" (but since the ink dots are actually larger than their spacing, the rating is more specifically about carriage and paper motor stepping intervals).
	www.scantips.com /basics01.html (1275 words)

	Pixel Density or Pixels Per Inch
		Rods (roughly.12.700 per inch) perform the function of a high-speed, fl and white film, while the 6 or 7 million cones (roughly 4,200 per inch) perform the function of a low-speed color film.
		The source was a 600 spi (samples per inch) scan of a silver print made from a Minox negative, from which the files with reduced pixel counts were made with Photoshop.
		Although higher pixel counts can be utilized by some equipment, 300 pixels per inch has emerged as a useful compromise between file size and print quality.
	www.kcbx.net /~mhd/2photo/digital/pixel.htm (707 words)

	National Geographic Photo Paper (Site not responding. Last check: )
		In this case, instead of defining the color for each pixel, the color for a range of pixels is considered the same and needs to be defined only once for each group of pixels.
		a pixel in the sky is blue and is made up of many dots that all together generate the associated blueness of the pixel.
		The resolution of a scanner is usually given in dots per inch (dpi), but please keep in mind that the scanner can "see" the color of a dot and thus in reality scans in pixels per inch (ppi).
	www.nationalgeographic.com /internationalpaper/printing_tips (1627 words)

	Pixels and Resolution (Site not responding. Last check: )
		When discussing a bitmap image, it should be referred to as pixels per inch (ppi) or pixels per centimetre (ppcm) — not dots per inch (dpi).
		The image file is made of pixels and the image on the screen is made of pixels.
		The number of pixels per inch needs to be associated with the dimensions of the image in order to give the image resolution.
	www.photoshop-tutorials-plus.com /pixels.html (860 words)

	Alpenglow Imaging (Site not responding. Last check: )
		Pixel Count Resolution and Spatial Resolution are related in that pixel dimensions and pixels per inch are the two factors that determine output image size - pixel dimensions divided by pixels per inch yields output (print) size, but the two are independent of one another.
		The actual ppi (pixels per inch) resolution that your monitor displays at is determined by two variables, the physical size of the display and the monitor resolution setting (pixel dimensions).
		So, a 17 inch monitor set at 800x 600 will have less pixels per inch (less resolution) than a 15 inch monitor set to the same 800 x 600 display setting, because the same amount of pixels have to be stretched over a larger area to fill the larger screen.
	www.alpenglowimaging.com /resolution.htm (5076 words)

	PPI - Pixels Per Inch, Precise Pixel Interpolation, Programmable Peripheral Interface
		(Pixels per inch) The unit that is used to measure the resolution of a bitmapped image.
		Pixels per inch; measurement used to describe the size of the final printed image.
		A pixel is a unit of data that should not be confused with dpi (dots per inch) or lpi (lines per inch).
	www.auditmypc.com /acronym/PPI.asp (699 words)

	Pixel Density or Pixels Per Inch (Site not responding. Last check: )
		Rods (roughly.12.700 per inch) perform the function of a high-speed, fl and white film, while the 6 or 7 million cones (roughly 4,200 per inch) perform the function of a low-speed color film.
		The source was a 600 spi (samples per inch) scan of a silver print made from a Minox negative, from which the files with reduced pixel counts were made with Photoshop.
		Although higher pixel counts can be utilized by some equipment, 300 pixels per inch has emerged as a useful compromise between file size and print quality.
	www.epixel.com /DK/dk/basics/pixel.htm (719 words)

	Starting with a pixel
		For example, with a camera or scanner we can state resolution as a total number of pixels, as a number of pixels per inch, or as a dimensional measure such as "the image is 1200 pixels wide by 800 pixels high".
		The pixel is huge when compared with the individual dots laid down by the printer and the printer will print multiple dots to form each pixel for two reasons.
		Divide the total number of pixels you have by the number of pixels per inch (defined by the resolution you have selected) and the results are the dimension of the print.
	www.ckcs.org /sigs/digitalphoto/pixels.htm (1799 words)

	Pixel Density or Pixels Per Inch
		Rods (roughly.12.700 per inch) perform the function of a high-speed, fl and white film, while the 6 or 7 million cones (roughly 4,200 per inch) perform the function of a low-speed color film.
		Since the pixel is the result of sampling, has the same general meaning as "spi".
		The source was a 600 spi (samples per inch) scan of a silver print made from a Minox negative, from which the files with reduced pixel counts were made with Photoshop.
	www.slonet.org /~mhd/2photo/digital/pixel.htm (707 words)

	Resolution - Lava Java - Pierce College
		The greater the resolution the smaller the pixels and the greater the apparent sharpness of the image.
		The pixels of an image printed at 100 ppi are twice as large as an image printed at 200 ppi.
		The resolution of the image (measured in pixels per inch) is usually much smaller than the output device resolution used to print the image, i.e.
	www.pierce.ctc.edu /LavaJava/learning/tutorials/Digbasics/resolution.htm (1146 words)

	Bair Art Editions \| Epson Printing Tutorial: Resolution for Optimal Printing Quality
		PPI (Pixels Per Inch, usually written in lowercase ppi) and dpi (dots per inch) are two similar concepts, but are still different.
		Pixels per inch denotes how many pixels are in each inch of your image at the current printing size.
		Above, we discussed the resolution you should use in terms of ppi (pixels per inch), which is in relation to the digital file, now let's determine your optimal dpi (dots per inch), which is in relation to printing the file on an inkjet printer.
	www.bairarteditions.com /pages/tutorials/epsonprinting/resolution.html (1411 words)

	Are You Puzzled by Pixels, Rattled by Resolution?
		Pixels are the key to snappy photos, as well as viewing quality images on your computer’s monitor, emailing sharp yet appropriately sized graphics, and buying computer hardware that suits your needs.
		Pixels — short for “picture elements”— are the dots of color that make up the images you see on your screen or print from your digital camera or another source.
		Pixels are the building blocks that determine how text and graphics will be displayed on a monitor screen, captured by a camera, or printed out.
	www.glencoe.com /norton/online/ezine/display_article.phtml?id=230 (1295 words)

	ePUB Illustrated — September 2001 \| Pixels... Don't Let Your Scans Leave Home Without Them!
		Pixels are an integral part of electronic publishing and being as such, a clearer understanding as to how they affect the printed product is beneficial to anyone who is creating files for print publication.
		The discussion of pixels can become very confusing when discussing pixels per inch (ppi) versus dots per inch (dpi).
		When interpolating the resolution, the software identifies single pixels in the image and creates additional pixels of varying color/density in the amount necessary to achieve the newly requested resolution.
	www.access.gpo.gov /procurement/ditsg/emag/sep_01/articles/htmlpages/pixels.html (842 words)

	Deltra Software - Papers (Site not responding. Last check: )
		A pixel, square in size, can be seen by a human eye on a final printed output if the dpi of that file is lower than say 100.
		Optimally the pixels(dots) per inch should be one fourth of the photo quality dpi of the printer, i.e.
		FotoReplica has a built-in feature, which retains all the pixels and sends them to the printer when printing, as the printers are capable of printing even 2400 pixels in one inch.
	www.deltrasoftware.com /web/papers/printing.html (2157 words)

	Adobe Photoshop User Guide for Beginners
		Image resolution refers to the spacing of pixels in the images and is measured in pixels per inch(ppi).
		Pixel depth(bit resolution) is a measurement of the number of bits of stored information per pixel.
		A pixel with a bit depth of 8 has 28, or 256 possible values(colours); and a pixel with a bit depth of 24 has 224 or 16 million, possible values (colours).
	www.hku.hk /cc/document/photoshop (3376 words)

	Web Graphics Basics
		While monitors are constrained by the 72 or 96 pixel per inch limitation, standard deskjet printers currently print in the range of 4800x1200 dpi (dots per inch) and pictures in magazines typically print at a resolution of 150 dpi.
		For example, a 3 inch by 3 inch picture scanned at a resolution of 72 pixels per inch will be 216 pixels wide and 216 pixels high and display as a 3 inch by 3 inch picture when displayed on the computer monitor.
		A 3 inch by 3 inch picture scanned at a resolution of 144 pixels per inch will be 432 pixels wide and 432 pixels high and display as a 6 inch by 6 inch picture when displayed on most computer monitors.
	www.washington.edu /accessit/webdesign/student/unit4/module2/web_graphics_basics.htm (1111 words)

	PPI: Pixels per inch
		Pixels Per Inch (PPI), or pixel density, is a measurement of resolution of a monitor displaying an image or a printer printing a picture.
		This measurement is often referred to as dots per inch, though that measurement more accurately refers to the resolution of a computer printer.
		PPI may also be used to describe the resolution of an image scanner or digital camera; in this context, it is synonymous with samples per inch.
	www.javvin.com /hardware/PPI.html (73 words)

	Web Developer's Journal - Tips on Web Page Design, HTML, Graphics and Development Tools
		The size of the graphic is measured in pixels rather than inches or centimeters.
		The graphic is 250 pixels wide, and it has a 72 ppi resolution, which is the most common on the Web.
		Well, 250 pixels divided by 72 pixels per inch is 3.47 inches, so the graphic (in a print environment) turns out about three and a half inches wide when it's printed.
	www.webdevelopersjournal.com /columns/ajs_ppi.html (2453 words)

	Java 2D Graphics, The Graphics2D Class
		The screen resolution (in pixels per inch) is used to establish the size of the Frame object in inches.
		Note also that the screen resolution in pixels per inch is used in the expressions that convert the dimensions in inches to dimensions in pixels for drawing on the screen.
		Note that the // default screen resolution of 72 pixels per inch is // used to establish the location and size of the // rectangle in inches.
	www.developer.com /net/cplus/print.php/626071 (5077 words)

	PPI, DPI, resolution and print size \| DigicamGuides.com
		Divide the number of pixels in the photo by the PPI to determine the size of the printed photo in inches.
		This table shows the relationship between camera megapixels, horizontal and vertical pixels in the image, and the size of a print at 200 pixels per inch.
		DPI means dots per inch, and has to do with just how much ink your printer lays down when it prints a photograph.
	www.digicamguides.com /print/ppi-print-size.html (996 words)

	Overview
		The size of the rendering is set in pixels, representing the number of colored squares along the X and Y axis of the rendering.
		For example, if your printer is using 85 lines per inch (say, for a newspaper), your image should be rendered at a maximum resolution of 85 x 2, or 170 pixels per inch.
		If your printer is using 150 lines per inch, your image should be rendered at a maximum resolution of 150 x 2, or 300 pixels per inch.
	www.alias.com /eng/support/studiotools/documentation/LearningStudio/Rendering_Introduction2.html (1133 words)

	Pixels, images, and files
		Scanners are specified by their dpi or ppi resolution-- dots (actually, pixels) per inch they can obtain from the source.
		Printers are specified by their dpi (dots per inch) "resolution," typically 720, 1440 or 2880 for Epson.
		Considerable confusion arises because image size is specified by the number of pixels, the "resolution" in dots or pixels per inch (dpi or ppi), and the physical size (width and height).
	www.normankoren.com /pixels_images.html (2319 words)

	Design215 Photography Printing Guide - DPI vs PPI
		Even though "dots per inch" (dpi) and "pixels per inch" (ppi) are used interchangeably by many, they are not the same thing.
		While pixels on a monitor are square and in contact with the adjacent pixels, printed dots have space between them to make white, or no space between them to make fl.
		Dots per inch (dpi) refers to printed dots and the space between them, while pixels per inch (ppi) refers to the square pixels in a digital image.
	www.design215.com /toolbox/print_guide.php (697 words)

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