Question about Dell 962 Photo All-In-One InkJet Printer

1 Answer

Scanning high Quality images

When I try to scan an image in 2400 dots pr inch resolution, it won't work. I get an error msg. Increase Virtual memory or increase RAM or decrease image size. The latter is of course out of the question. I've got 2 gb of ram and the virtual mem size is now increased to 16368 MB. So does anyone know what the problem is. Scanning in 1200 resolution is ok.

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  • thoge Dec 22, 2007

    1. Windows XP
    2. It's possible to scan a smaller portion of the image, but that would take a lot of time. It' seems that the scan limit for image size is a little under 300MB(working size). Of course when I save the image it will only be 2MB.

    3. What I was hoping for was a solution that does not require me to scan the image in smaller parts and assemble them together in an editing program afterwards. I'm lazy.

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1 Answer

Two questions for you to help with a solution:

1. What operating system are you using?
2. Are you able to scan an image of any size (even a postage stamp size) at 2400 dpi? (Try setting the scanner to just scan a small section of a larger image as a test for this.)

If you can scan smaller size images at 2400 dpi then it is possible to scan the image in two (or more) parts (upper half / lower half) and then re-assemble the image in an editing program.

Posted on Dec 19, 2007

  • Anonymous Dec 22, 2007

    What program are you scanning with? Is it possible to upgrade that program to a newer version? Also make sure you're using the latest drivers from Dell for this All-in-One unit.

    Following your math I too calculate that a 4x5 inch picture will take 325 MB of raw memory to scan, assuming 24 bits per pixel.

    Recall that some programs keep one (and sometimes two) copies of the image in RAM to aid in Undo features, so you could be stretching up to a gigabyte of RAM required.

    I'm beginning to suspect that this is a limitation in your software, not necessarily a hardware problem. A lazy programmer could have put in a check for scanning images at 2400 dpi at this size and just decided to not support it.

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Canon PIXMA Manuals MG2900 series Resolution
Resolution The data in the image you have scanned is a collection of dots carrying information about brightness and color. The density of these dots is called "resolution", and resolution will determine the amount of detail your image contains. The unit of resolution is dots per inch (dpi). Dpi is the number of dots per inch (2.5 cm). The higher the resolution (value), the more detail in your image; the lower the resolution (value), the less detail.

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LPI, PPI,DPI conversions


Here is a conversion chart for DPI (Dots per inch) to LPI (Lines per inch) or PPI (Pixels per inch)

180 DPI................31 lines/inch or 68 PPI
360 DPI................63 lines/inch or 138 PPI
720 DPI................127 lines/inch or 280 PPI
1440 DPI..............255 lines/inch or 561 PPI
2880 DPI..................510 lines/inch or 1122 PPI

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