Outline Of Operation - Intermec ColorCoder V4 Service Manual

2.5 Control/Interface System, cont'd.
2.5:B Outline of Operation
Intermec ColorCoder V4 – Service Manual Ed. 1
The printer has the following two printing data access routes.
1. The printing data stored in the memory card are directly printed.
2. The printing data are transmitted from a host computer through
parallel interface.
In any case of the above, the printing operation will start after an
equivalent of one page of the image data are developed in the bit
map RAM inside the formatter PCB.
When the development of the image data are completed, the
formatter PCB will send a print start signal to the engine unit, where
the initialization of the head, the paper feed operation, and the
counting operation of the print start position are executed.
When the paper reaches the print start position, an equivalent of one
black line of the printing data are sent from the image data of the bit
map RAM inside the formatter PCB to the black head via the engine
1 and 2 PCBs. At the head, these data are once stored and printed.
Each time when an equivalent of one line of the paper is fed, an
equivalent of one line of the printing data is repeatedly transmitted
and printed in this manner to form continuous images.
Likewise, when the printing position reaches each head position of
cyan, magenta, and yellow, printing data of each colour are printed
to form color images.
Chapter 2 Operation and Timing
71