Canon fax basic 2000 サービスマニュアル
G3 FACSIMILE COMMUNICATIONS
5–4
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.
Fig. 5-2 Horizontal Scanning and Vertical Scanning
(example of standard resolution)
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.
Fig. 5-3 Structure of Image Signals
• 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
1728 dots
1145 lines
297 mm
210 mm
Horizontal scanning line density 8 dots / mm
Vertical scanning line
density 3.85 lines / mm
density 3.85 lines / mm
Horizontal scanning direction
Vertical scanning
direction
direction
Standard A4 document
Document feed direction
EOL
EOL
EOL
EOL
EOL
EOL
RTC
EOL EOL EOL
EOL
One page's worth of image information
Data
Fill
Data
Fill
Data
One line's worth of
image information
image information
One line's worth of
image information
image information
One line's worth of
image information
image information
Data
Fill