Detailed Section Descriptions; Printing; Image Data Path - Ricoh G031 Service Manual

2. DETAILED SECTION DESCRIPTIONS

2.1 PRINTING

2.1.1 IMAGE DATA PATH

D r u m
LD Unit
The printer control board receives the print data from the host computer (AT
compatible Windows PC or Macintosh).
• For the G031, the printer control board has two OBI (Optional Bus Interface)
connectors to connect a network interface board (NIB), RS232C interface, or
HDD unit.
• For the G032, the printer control board has one OBI connector.
The printer control board generates the print image data and sends it with
commands to the ECB (Engine Control Board).
The printer control board contains the image processing ASIC (ROCKY W). The
ROCKY W ASIC controls the image processing, IEEE1284 interface, DRAM, edge
smoothing, and toner saving. (ASIC: Application Specific Integrated Circuit)
The ECB contains a gate array. The gate array controls LD print timing control and
the serial interface to the printer control board.
Finally, the ECB sends the video data to the LD drive board.
SM
LD Drive
Gate
Board
Array
E C B
2-1
P C A T
Macintosh
Compatible
Parallel
NIB
Optional Bus I/F
C N .
R O C K Y W
Printer Control Board
G031D502.WMF
PRINTING
Ethernet
G031/G032