Image Printing - Ricoh G035 Service Manual

2.1.2 IMAGE PRINTING

Printer Controller
N I B
Buffer
Parallel
The printer controller receives the print data from the computer through the parallel
or network interface port. The co-processor handles the image data but it only
makes a raster image. All image processing, such as edge smoothing and toner
saving, are done in the base engine.
The image data from a PC goes to the buffer in the resident RAM. Then, it goes to
the co-processor. The co-processor selects the printer language automatically,
then it generates the print data to match the selected printer language. After
generating the print data, the co-processor sends it to the LD unit through the IPU
on the BICU board. At that time, the data is also sent to the hard disk for multiple
printing and sorting, as well as backup in case of paper jams.
SM
Parallel Interface, from PC
C P U
Co-processor
Resident
R A M
LD Unit
IPU
G A V D
FCI
Co-processor
P C L - 5 e
Intelligent
Personality P C L - 6
Selection
Post
script
2-3
PRINTER CONTROLLER
NIB
D R A M S I M M
B I C U
M S U
H D D
G035D552.WMF
Printer Controller
Resident
R A M
Image Data
Generation
D R A M
S I M M
Base Engine
B I C U
M S U H D D
I P U L D
G035D553.WMF
G035