How Images Are Transmitted - Canon FACSIMILE BASIC 2000 Service Manual

GENERAL DESCRIPTION OF A FACSIMILE
1.6

How Images are Transmitted

The sender facsimile transmits the image over the telephone line, and the
receiver facsimile receives and prints out the transmitted image.
The figures below illustrate how images are sent.
2–8
2. Division into
1. Image
pixels
Transmission
6. Demodulation
Fig. 2-2 How Images Are Transmitted
3. Conversion into
electrical signals
White Minus
signal
pixel
Black Plus
signal
pixel
5. Transmission
/reception
7. Reassembly of pixels 8. Reproduction
4. Modulation
Reception
of image