Mirror Image; Noise Removal; Paper Jam - Fujitsu fi-4750C Operator's Manual

Linedrawing mode
Selecting linedrawing mode makes threshold and contrast settings effective but prevents brightness from
being set. The specified threshold value determines whether black or white pixels are scanned. Line drawing
mode is therefore appropriate for scanning text and line art images.
Manual Feed mode = Manual Mode
Requires the operator to feed each document manually into the ADF paper chute.
Manual start mode (<-> automatic start mode)
The reading operation is activated by pressing the START button in this mode. Available only when video option
board is installed.

Mirror image

The read image is symmetrically flipped to produce a mirror image of the original detected in the main scanning
direction.

Noise removal

Isolated noise from an image appearing as black spots in white areas and voids in black areas is removed to
improve image quality.
Operator panel
A panel containing the scanner indicators and buttons. The operator panel is used to control scanner
operations such as loading document, selecting features, and changing setup options.
Outline extraction
The boundary between black and white areas is traced and the outline extracted for closed areas.

PAPER JAM

A warning informing the user that document is jammed in the transport unit, or that transportation is disabled
because the transport unit is slippery. This warning also appears when a double feed is detected.
Photograph mode (White level follower OFF)
Selecting photograph mode makes brightness and contrast settings effective but prevents the threshold from
being set. With photograph mode, the darkness of image corresponds to the black-pixel density, making it
suitable in scanning images such as photographs having gradations.
Photo mode = photograph mode
A photograph is read properly in this mode.
Pick start time
The period from the manual insertion of the document until picking starts after the document passes the hopper
empty sensor.