Canon FACSIMILE BASIC 2000 Service Manual page 146

G3 FACSIMILE COMMUNICATIONS
lines/mm (ultra-fine mode) depending on the product. After the image is
read, coding is performed successively in the horizontal scanning direction
one scanline at a time.
Image signals on a G3 facsimile comprise one line's worth of read coded
data, EOL, RTC and fills. The following describes the components of an
image signal.
• EOL (End Of Line)
A coded scanline in the horizontal scanning direction is transmitted con-
secutively from the 1st line. The end of each scanline is appended with a
5–4
Horizontal scanning line density 8 dots / mm
1728 dots
Horizontal scanning direction
Vertical scanning Standard A4 document
direction
Document feed direction
210 mm
Fig. 5-2 Horizontal Scanning and Vertical Scanning
(example of standard resolution)
Data Data
Fill
EOL EOL
One line's worth of One line's worth of
image information image information
Fig. 5-3 Structure of Image Signals
1145 lines
297 mm
One page's worth of image information
Data
Fill
EOL
One line's worth of
image information
Data
Vertical scanning line
density 3.85 lines / mm
EOL
Fill
EOL EOL EOL EOL EOL EOL
RTC