IBM Ricoh FB750 - Manual (Page 61)

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installing support for the device. Only devices or interface cards that Windows 95 has direct support for can
be Plug and Play. Scanner, digital camera and other imaging device support is not built into Windows 95;
therefore, no scanner, digital camera or other imaging device can be truly Plug and Play. As of this writing
(May 98), support for imaging devices is reputed to be integrated in Windows 98, but since the full-release
has not yet been revealed, there is no way to verify this.
POP3
A communications protocol that directs email exchanges on TCP/IP networks. Most applications that have a
Send Mail feature require a Pop3 style email account and client. America Online (AOL) or other Online
Services are not Pop3 but use their own, proprietary formats for mail transfer within their service and convert
the proprietary format at the network level to Internet standards for sending outside their network.
Posterizing
Posterizing is cause by reproducing a continuous tone image using a limited palette of grays and colors. The
word posterizing refers to the creating of images for posters which generally only use a small number of
different inks in the printing process.
Preview or Prescan
In the TWAIN interface, or scanner driver window, there is generally a button labeled Preview or Prescan.
This will allow you to make a preliminary scan of an item so you can make changes to the way the scanner
will scan the item (i.e., changing the contrast, brightness, resolution, or scanning area). Preview images are
scanned at 72dpi (the resolution of your computer ‘s video). A preview image is not a final scan. You cannot
edit the preview image outside of the TWAIN interface nor is it possible to save a preview image.
RAM
Random Access Memory. Chip memory of a computer or expansion board that can be read from and written
to (unlike ROM = Read Only Memory).
Raster Graphics
A digital method for creating an image, using a complex series of dots. Most graphics formats are based on
raster graphics: BMP, GIF, JPG, TIF, etc.
Resampling
Increasing or decreasing the size of an image by increasing or decreasing the number of pixels present.
Resolution
Resolution governs the clarity of the image or the amount of detail an image can hold. It also determines how
closely the pixels of an image are packed. Resolution is measured in dots per inch (DPI). Computer screens
commonly display 60-80dpi. Continuous tone printers can achieve photo-quality with 200-300dpi while
conventional printers (using a half-tone process) require a much higher resolution, generally 1200 to 2400, to
achieve photo-quality.
Note: High resolution images especially color images, create HUGE files and consume large amounts of
resources to process. High Resolution images may also require the computer to have advanced Video
capabilities.
RGB or Red/Green/Blue
A color model for defining and representing colors consisting of three channels. Combining these three
colors in various proportions generates color. On most graphics boards, color information is saved in the Red/
Green/Blue color format. RGB is an additive process, any color can be created using red, green and/or blue
in the correct proportions.