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GL-4
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.
Portrait orientation
A document is transported and read with the long side parallel to the moving direction.
Paper counter
Indicates the total number of read document from start of reading until the hopper becomes empty.
Read operation
Refers to the reading operation including Simplex reading and Duplex reading.
RS-232C interface
A type of serial interface. See Serial interface.
SCSI-ID
Used to specify a particular SCSI device when the initiator selects a target or the target reconnects to the
initiator.