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8 Term Glossary
Sharpness
An EPSON TWAIN option that lets you adjust the measure of
enhanced detail (focus) in an image.
Subtractive Primary Colors
Primary colors that produce black when mixed in a certain
proportion. These are cyan, magenta, and yellow. In printing,
black is often added to give more definition because mixing of
actual inks cannot produce pure black.
TET
Text enhancement technology. A feature that eliminates the
document background and raises the recognition accuracy
during OCR (Optical Character Recognition) scanning.
Threshold
An EPSON TWAIN option that sets the point at which gray
values are changed to either black or white.
TIFF5.0
Tagged Image File Format, version 5.0. TIFF is an industry-
standard file format supported by many applications. Black-and-
white images can be exported with G3 compression.
TIFF6.0(JPEG)
Tagged Image File Format, version 6.0 with JPEG compression.
TIFF and JPEG are industry-standard file formats supported by
many applications.
Tone Correction
A method of adjusting the transfer curve so that the
reproduction results on different types of output devices have
tonal gradations similar to the original image.
Transfer Curve
A tone correction graph that shows the contrast ratio between
the input (original image) and output (image data) in image
processing.