This manual contains proprietary in formation that is protected by copyright.
No part of this publication may be rep rod uced in any form without the express
written consent of Ricoh Compan y Ltd .
The contents of th is ma nual are subject to change without notice.
Every effort has been made to ensure the accuracy of this manual. However,
Ricoh Compay Ltd. makes no expre ss or imp lied warranty of any kind in regard to the contents of the manua l, and can assume no liab ility fo r any erro rs
or their consequences.
T ra demark Notices
EPSON FX-850 is a trademark of Seiko Epso n Corp oration.
HP LaserJet III is a trad ema rk o f Hewle tt -Packard Company.
Hewlett-Packard, PCL (Printer Control Language), and GL (Graphic
Language) are trademarks o f Hewle tt -Pa ckard Company.
LAYOUT is a trademark of Clan Systems.
IBM, IBM Proprinter XL2 4E , and IB M P erso na l Compu ter are trademarks of
International Business Machines Corporation.
Centronics is a trademark of Centronics Data Compu te r Corpo ration.
6th September, 1993 OVERALL INFORMATION
SPECIFICATIONS
11. OVERALL INFORMATION
1.1. SPECIFICATIONS
Items Specifications
Printing Resolution 300 dpi
Printing Speed 10 ppm (L T / A4 )
First Page Printout TIme Less than 15 s
Paper Size Letter, Legal, A4
RAM Capacity Standard - 2.0 MB
Host PC Interface 1 Serial Port - RS232C
1 Parallel Port - Centronics
Emulation Modes HP LaserJet III (HP Printer Control Language Level 5, Hp
Graphics Language/2)
EPSON FX-850
IBM Proprinter XL24E
LayOut Document Description Language
Turbo Mode (fast bit-image transfer)
HEX printout
Printable Area
1/4 inch
(6.4 mm)
1/4 inch
(6.4 mm)
1/4 inch
(6.4 mm)
1/4 inch
(6.4 mm)
Others IC Card Slot - 1
Font Cartridge Slot - 1
Printable Area
1-1
OVERALL INFORMATION 6th September, 1993
OVERALL SYSTEM CONTROL
1.2. OVERALL SYSTEM CONTROL
Serial I/F
Parallel I/F
To Printer
Mechanism
Interface
Controller
Controller
Printer Data I/F
Oscillator
24.1 MHz
PIFE
FCU
CN4
CN2
LIF
ADDRESS/DATA BUS
Page
Memory
ADDRESS/DATA BUS
CPU
CPU
Flash
ROM
CPU
EEPROM
CN1
CN3
LIOP
IC Card
LCD/LED Data
To/ From
Operation Panel
The printer interface kit consists of two PCB s, th e printe r cont rolle r board
(Controller) and the printer interface board (PIFE).
1.2.1. Printer Data Path
Through the serial and/or parallel interfa ce(s), the Cont rolle r han dsh ake s wit h
the host(s) and receives print data, using one of the available emulation
modes. Then the CPU creates an imaginary page in the memory using the
fonts stored in the ROM. After one page of print data has be en created, the
Controller sends the video data through the print er data interface to the LIF
on the FCU for printing. The PIFE emu lat es th e prin t data an d co nt rol sig na ls
for the LIF to work correctly, and supplies the 24.1 MHz clock signal to the
LIF for 300 dpi printing.
1-2
6th September, 1993 OVERALL INFORMATION
POWER DISTRIBUTION
1.2.2. LCD/LED Data Path
The three LEDs on the operation panel are always dedicated to the Controller. They indicate the status during printing, and are directly co nt rolled by the
Controller.
In Printer Mode (Function 35), the LCD display and four one-touch dial keys
are dedicated to the Controller to access Printer functions. Within th e Prin ter
functions, some settings are not available because of limitations to the machine’s hardwa re. So, the CP U on th e PI FE monitors the function status and
the settings to indicate on the LCD, and mod ifies the data if necessary (e.g.,
Half Letter size paper will not be displayed as a possible paper size).
1.3. POWER DISTRIBUTI O N
Controller PIFE FCU
To ICs
+5VD
DC/DC +24VS
CPU
+5V
+5VDEN
The PIFE generates +5VD for th e Con tro ller from the +24VS supplied by the
FCU.
+5V for the PIF CPU is directly supplied by the FCU. The +5V line is returned
to the FCU as +5VDEN, so that the FCU can detect whether the print er int erface is installed or not.
1-3
6th September, 1993 DETAILED SECTION DESCRIPTIONS
INTERFACE SPECIFICATIONS
2. DETAILED SECTION DESCRIPTIONS
2.1. INTERFACE SPECIFICATIONS
2.1.1. Parallel Interface
The parallel interface can use eit he r Centronics or Dataproducts signalling
protocols. The selection is mad e by a user adjustment.
1. Pin Assignment
There is an 8-bit parallel interf ace . The pin assig nments are as follows.
Signal
Pin
1 19 STROBE IN
2 - 9 20 - 27 DATA1-8 IN
10 28 ACKNLG OUT
11 29
12 30 PE OUT Indicates that the printer is out of paper.
13 - SELECT OUT
15 - DRTN
16 - GND - Logic ground
17 - CH-GND - Printer’s chassis ground
18 5V470R Pulled up to 5 V through a 470 Ω resistor.
19 - 30 - GND - Twisted pair return signal ground level
32 - ERROR OUT
Return
Pin
Signal
BUSY/
DEMAND OUT
Direct-
ion
Description
The strobe pulse from the host to read data in.
Centronics: Active LOW, Dataproducts: Active
HIGH.
Parallel data bits 1 to 8. For 7-wire connections,
the most significant bit can be fixed at 0 using a
user adjustment.
Indicates that data has been received and the
printer is ready to receive more data.
A HIGH (Centronics) or LOW (Dataproducts)
indicates that the printer cannot receive data.
The printer is busy when the interface already
contains a byte from the computer but not yet
taken by the controller, when the printer is off
line, and when there is a printer error. The
Centronics signal is called BUSY, and the
Dataproducts signal is called DEMAND.
This correcsponds to the Centronics SELECT
and the Dataprioducts READY and ONLINE
signals.
Reserved for data direction control. If HIGH, data
goes from host to printer. If LOW, it goes the
other way. The pin is pulled up on the controller
board.
Indicates when the printer is out of paper, off
line, or in an error condition.
Other pins: Not used.
2-1