Resolution; Jbig Transmission - Ricoh 917F Operating Instructions Manual

1. Transmission
• If you send a fax document with Photo and the background of the received image is dirty, reduce the
density setting and resend the fax. For details about setting the image density, see "Image Density
(Contrast)".
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• You can set the original type that is selected right after the machine is turned on or whenever the [Clear
Modes] key is pressed. See "Setting Transmission Function Defaults (Home Position)".
• p.43 "Image Density (Contrast)"
• p.98 "Setting Transmission Function Defaults (Home Position)"

JBIG Transmission

If you use JBIG (Joint Bi-level Image experts Group) compression, you can send originals scanned using
Photo faster than with other compression methods.
• This function is not available with the Internet Fax function.
• This function requires that the other party's fax machine has both the JBIG function and ECM function.

Resolution

Specify the resolution according to the size of the text on the original.
Images and text are scanned into the machine by converting them to a sequence of dots. The density of
the dots determines the quality of the image and how long it takes to transmit. Therefore, images scanned
at high resolution have high quality but transmission takes longer. Conversely, low resolution scanning
results in lower quality but the original is sent more quickly. Select the setting that matches your needs based
upon this trade off between speed and image clarity.
Standard (8 × 3.85 lines/mm, 200 × 100 dpi)
Select for originals containing normal size characters.
Detail (8 × 7.7 lines/mm, 200 × 200 dpi)
Select for originals containing small characters or when you require greater clarity. This resolution is
twice as fine as Standard.
Fine (8 × 15.4 lines/mm)
Select for originals with fine details or when you require the best possible image clarity. This resolution
is four times finer than Standard.
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