Ricoh B383 User manual

FAX UNIT
(Machine Code: B383)
This manual explains the Fax Unit, as well as the following.
❒EXSAF (Machine Code: A818)
❒HDD (Machine Code: A841)
❒PMU (Machine Code: A818)
❒ISDN (Machine Code: A816)
❒Handset (Machine Code: A841)
❒Stamp (Machine Code: A563)
August 28, 2000
Subject to change

28 August, 2000 SPECIFICATIONS
1-1
Overall
Information
1. OVERALL MACHINE INFORMATION
1.1 SPECIFICATIONS
Type
Desktop type transceiver
Circuit
PSTN, PABX, ISDN (optional)
Connection
Direct couple
Original Size (Book)
Maximum Length: 432 mm [17 ins]
Maximum Width: 297 mm [11.7 ins]
Original Size (ADF)
Maximum: A3, 11” x 17”
Minimum: B5, 51/2” x 81/2”
Scanning Method
Flat bed, with CCD
Scan Width
210 mm [8.64 ins] ±1% (A4)
216 mm [8.5 ins] ±1% (8.5" x 11")
256 mm [10.2 ins] ±1% (B4)
279 mm [11.0 ins] ±1% (11" x 17"r)
296 mm [12.2 ins] ±1% (A3)
Resolutions
8 x 3.85 lines/mm (G3 only)
8 x 7.7 lines/mm (G3 only)
8 x 15.4 lines/mm (G3 only)
16 x 15.4 lines/mm (G3 only)
200 x 100 dpi
200 x 200 dpi
400 x 400 dpi
Note:
To use the 8 x 15.4 lines/mm, 16 x 15.4
lines/mm and 400 x 400 dpi resolutions, an
optional PMU (page memory) is required.
Memory Capacity
ECM: 128 Kbytes
SAF:
Standard: 2 Mbytes (160 pages)
With optional memory board (EXSAF):
6 Mbytes (480 pages)
With optional HDD:
80 Mbytes (3000 pages)
Measured using an ITU-T #1 test document
(Slerexe letter)
Compression
MH, MR, MMR, SSC
JBIG (PMU is required)
(MMR only with ECM and G4)
SAF storage for memory tx: MMR and raw
data
Protocol
Group 3 with ECM
Group 4 (ISDN unit required)
Modulation
V.34, V.17 (TCM), V.29 (QAM),
V.27ter (PHM), V.21 (FM)
Data Rate (bps)
G3:
33600/31200/28800/26400/24000/21600/
19200/16800/14400/12000/9600/7200/4800
/2400, Automatic fallback
G4 (option): 64 kbps/56 kbps
I/O Rate
With ECM: 0 ms/line
Without ECM: 2.5, 5, 10, 20, or 40 ms/line
Transmission Time
G3: 3 s at 28800 bps; Measured with G3
ECM using memory for an ITU-T #1 test
document (Slerexe letter) at 8 x 3.85 l/mm
resolution
G4 (option): 3 s at 64 kbps; Measured with
an ITU-T #1 test document (Slerexe letter)
at 200 x 200 dpi resolution

FEATURES 28 August, 2000
1-2
1.2 FEATURES
1.2.1 FEATURES LIST
KEY:
O = Used, X = Not Used,
A = Optional EXSAF required
B = Optional HDD required
C = Optional PMU required
D = Optional ISDN unit required
E = Optional STAMP unit
Video Processing Features
Automatic image density
selection O
Contrast O
Halftone
(Basic & Error Diffusion) O
MTF O
Reduction before tx (B4 -> A4) O
Reduction before tx (A3 -> B4) O
Reduction before tx (A3 -> A4) O
Scanning Resolution –
Standard O
Scanning Resolution – Detail O
Scanning Resolution – Fine C
Scanning Resolution –
Superfine C
Smoothing to 400 x 400 dpi
when printing O
JBIG compression C
Communication Features – Automatic
V.34 communication O
AI short protocol O
Automatic fallback O
Automatic redialing
(Memory tx only) O
Confidential Reception A
Dual Access O
Substitute reception O
Communication Features - User
Selectable
90°Image Rotation before tx O
Action as a transfer
broadcaster A
AI Redial (last ten numbers) O
Answering machine interface X
Authorized Reception O
Automatic dialing
(pulse or DTMF) O
Auto Document O
Automatic Voice Message X
Batch Transmission O
Book Original tx O
Broadcasting O
Chain Dialing O
Communication Record
Display O
Confidential ID Override O
Confidential Reception A
Confidential Transmission O
Direct Fax Number Entry O
Economy Transmission O
Fax on demand X
Forwarding A
Free Polling O
Groups (9 groups) O
Group Transfer Station A
Hold X
ID Transmission O
Immediate Redialing O
Immediate transmission O
Keystroke Programs O
Length Reduction O
Memory transmission O
Multi-step Transfer A
Next Transfer Station X
Non-standard original size
transmission O
OMR X
On Hook Dial O
Ordering Toner X
Page Count O

28 August, 2000 FEATURES
1-3
Overall
Information
Communication Features - User
Selectable
Page separation mark O
Parallel memory transmission O
Personal Codes O
Personal Codes with Conf. ID X
Partial Image Area Scanning X
Polling Reception O
Polling Transmission O
Polling tx file lifetime in the
SAF O
Quick Dial
(Standard: 56 stations) O
Reception modes (Fax, Tel) O
Remote control features X
Remote Transfer X
Resolutions available for
reception
Standard
Detail
Fine (16 x 15.4 l/mm only)
Superfine
O
O
C
C
Restricted Access O
Secured Polling O
Secured Polling with Stored ID
Override O
Secure Transmission X
Send Later O
SEP/SUB/PWD O
Silent ringing detection X
Speed Dial
(Standard: 100 stations) O
Stamp E
Telephone Directory O
Tonal Signal Transmission O
Transfer Request O
Transmission Deadline (TRD) X
Turnaround Polling X
Two-step Transfer X
Two in one O
Voice Request
(immed. tx only) X
Communication Features -
Service Selectable
AI Short Protocol O
Auto-reduction override option O
Communication Features -
Service Selectable
Busy tone detection O
Cable Equalizer O
PSTN O
ISDN D
Closed Network (rx) O
Continuous Polling Reception O
Dedicated tx parameters O
ECM O
EFC X
Inch-mm conversion before tx O
mm-inch selection when
printing O
Page retransmission times O
Protection against wrong conn. O
Short Preamble X
Other User Features
Area code prefix X
Center mark O
Checkered mark O
Clearing a memory file O
Clearing a polling file O
Clock O
Confidential ID A
Counters O
Daylight Saving Time O
Destination Check X
Direct entry of names O
File Retention Time O
File Retransmission O
Function Programs (F1 – F5) O
Hard Disk Filing System X
ID Code O
Label Insertion ("To xxx") O
Language Selection SP
mode
Manual service call O
Memory Lock A
Modifying a memory file (tx) O
Multi Sort Document
Reception A
Own telephone number O
Energy Saver O
Print density control X

FEATURES 28 August, 2000
1-4
Other User Features
Printing a memory file SP
mode
RDS on/off O
Reception Mode Switching
Timer X
Reception time printing O
Remaining memory indicator O
Reverse Order Printing O
RTI, TTI, CSI O
Speaker volume control O
Specified Cassette Selection O
Substitute reception on/off O
Telephone line type O
Toner Saving Mode X
TTI/CIL on/off O
User Function Keys (5 keys) O
User Parameters O
Wild Cards O
Reports - Automatic
Charge Control Report X
Communication Failure Report O
Confidential File Report A
Error Report O
Fax On Demand Report X
Memory Storage Report O
Polling Clear Report O
Polling Reserve Report O
Polling Result Report O
Power Failure Report O
Journal O
Toner Cassette Order Form X
Transfer Result Report A
Transmission Result Report O
Reports - User-initiated
Authorized Reception List O
Charge Control Report X
File List O
Forwarding List A
Group List O
Hard Disk File List X
Personal Code List O
Keystroke Program List O
Reports - User-initiated
Quick Dial/Function Key Label O
Quick Dial List O
Specified Cassette Selection
List X
Speed Dial List O
TCR/Journal O
Transmission Status Report X
User Function List X
User Parameter List O
Service Mode Features
Back-to-back test O
Bit switch programming O
Buzzer test O
Cable equalizer O
Comm. parameter display O
Counter check O
Country code O
DTMF tone test O
Echo countermeasure O
Effective term of service calls O
Error code display O
Excessive jam alarm O
File Transfer O
Hard Disk Utilities
(Format etc.) A and B
LCD contrast adjustment SP
mode
Line error mark X
Memory file printout (all files) O
Modem test (includeV.34 / V.8) O
NCU parameters O
Periodic service call O
PM Call O
Printing all communication
records kept in memory O
Protocol dump list O
RAM display/rewrite O
RAM dump O
RAM test O
RDS
- RAM read/write
- Dial data transfer
(Quick/Speed)
- Software transfer
O
O
O
Ringer test O

28 August, 2000 FEATURES
1-5
Overall
Information
Service Mode Features
ROM version display
(FCU and Modem) O
Serial number O
Service monitor report O
Service station number O
Software Download O
Software Upload O
Modem Software Download O
SRAM data backup and
restore O
System parameter list O
Technical data on the Journal O

FEATURES 28 August, 2000
1-6
1.2.2 CAPABILITIES OF PROGRAMMABLE ITEMS
The following table shows how the capabilities of each programmable item will
change after the optional function upgrade card is installed.
Item Standard With optional memory board
(EXSAF)
Maximum number of memory files 200 1000
Maximum number of destinations per file 200 1000
Maximum number of destinations overall 500 2000
Maximum number of pages overall 160 480 (HDD: 3000)
Number of Quick Dials 56 56
Number of Speed Dials 100 1000
Number of Groups 9 30
Maximum number of destinations per
Group 200 200
Maximum number of destinations dialed
from the ten-key pad overall 100 1000
Maximum number of programs 56
(programmed in 56
Quick Dial keys)
56
(programmed in 56
Quick Dial keys)
Maximum number of Auto Documents 6
(programmed in 6
Quick Dial keys)
18
(programmed in 18
Quick Dial keys)
Maximum number of communication
records for the Journal stored in the
memory
200 900
Maximum number of addresses specified
for features such as Authorized
Reception and Specified Cassette
Selection
30 50
Maximum number of user function keys 5 5
Maximum number of personal codes 20 50

28 August, 2000 OVERALL MACHINE CONTROL
1-7
Overall
Information
1.3 OVERALL MACHINE CONTROL
1.3.1 SYSTEM CONTROL
FCU
SCP
Flash ROM
(2MB) SRAM (128kB) VPC
MN195003MFL
Modem
DRAM
(6MB)
CPU BUS
ISDN
DMA BUS
Bus Interface
Parallel Interface
Serial Interface
Analog Circuit
NCU
Monitor
Speaker Base copier
<Service Tools>
Data Copy Tool
Flash Memory Card
EXSAF
Board PMU Board
80MB
HDD
B383V500.WMF

OVERALL MACHINE CONTROL 28 August, 2000
1-8
The basic fax unit consists of two PCBs: an FCU and an NCU.
The FCU controls all the fax communications and fax features, in cooperation with
the base copier's main board. The NCU switches the analog line between the fax
unit and the optional external telephone.
Fax Options
1. ISDN unit: This allows the fax unit to communicate over an ISDN (Integrated
Services Digital Network) line.
2. EXSAF board: This expands the SAF memory capacity to hold up to 6MB of
received data or data for transmission. Also, some additional features become
available. In addition, this expands the system's SRAM capacity to hold
programmed telephone numbers, communication records, etc.
3. PMU board: This expands the page memory capacity to 4MB to enable 400 dpi
communications. Also, JBIG compression becomes available.
4. Hard Disk: This expands the SAF memory capacity to 80MB. The EXSAF is
required to install this option.
1.3.2 POWER DISTRIBUTION AND CONTROL
The FCU power is supplied from the base copier (+24V, +12V, -12V, and +5VE)
and PSU (+5V). Refer to the base copier's service manual for details.
1.3.3 MEMORY BACK-UP
The system parameters and programmed items in the SRAM on the FCU and the
EXSAF board are backed up by batteries (long-term backup), in case the base
copier's main switch is turned off.
The SAF memory (DRAM) on the FCU and the EXSAF board are backed up by
rechargeable batteries for 1 hour.

28 August, 2000 VIDEO DATA PATH
1-9
Overall
Information
1.4 VIDEO DATA PATH
1.4.1 TRANSMISSION
FCU
Base copier
Page Memory
(Rotation) Page Memory
SAF Memory
Modem
NCU CiG4 CiG4
Immediate Tx
Auto Shading
Gamma Correction
MTF
Graduation Processing
Main Scan Reduction
- 400 to 200 dpi
- Inch-mm Conversion
- A3 to B4, A3 to A4, B4 to A4
Thresholding
Memory Tx
without image
rotation
Memory Tx
with Image Rotation Immediate Tx
Compression
Analog G3 ISDN G3 ISDN G4
Memory Tx
Auto Shading
Gamma Correction
MTF
Graduation Processing
Main Scan Reduction
- 400 to 200 dpi
Thresholding
VPC
PMU Board
QM-CORDER
(Optional)
JBIG
Compression
Decompression
Compression
(Main Scan Reduction)
SCP
(DCR)
SCP
(DCMMR)
SCP SCP
SCP
(DCMMR) SCP
(DCR)
A383V501.WMF

VIDEO DATA PATH 28 August, 2000
1-10
Memory Transmission and Parallel Memory Transmission
The mainframe's scanner scans the original at the selected resolution in inch
format. The mainframe processes the data and transfers it to the FCU.
NOTE: When scanning a fax original, the mainframe uses the MTF and
thresholding parameter settings programmed in the fax unit’s scanner
bit switches, not the copier's SP modes.
Then, the FCU converts the data to mm format, and compresses the data in
MMR+raw format to store it in the SAF memory. If image rotation is possible, the
image is rotated in page memory before compression.
At the time of transmission, the FCU decompresses the stored data, then re-
compresses and/or reduces the data if necessary for transmission. Either the NCU
or CiG4 (optional) transmits the data to the line.
Immediate Transmission
The mainframe's scanner scans the original at the resolution agreed with the
receiving terminal. The mainframe video processes the data and transfers it to the
FCU.
NOTE: When scanning a fax original, the mainframe uses the MTF and
thresholding parameter settings programmed in the fax unit’s scanner bit
switches, not the copier's SP modes.
Then the FCU stores the data in page memory, and compresses the data for
transmission. Either the NCU or CiG4 (optional) transmits the data to the line.
JBIG Transmission
•Memory transmission: With memory transmission, if the receiver has JBIG
compression, the data goes from the SCP (DCR) to the PMU for JBIG
compression. Then either the NCU or CiG4 (ISDN unit) transmits the data to the
line.
•Immediate transmission: With immediate transmission, if the receiver has JBIG
compression, the data goes from the page memory to the PMU for JBIG
compression. Then either the NCU or CiG4 (optional) transmits the data to the
line.

28 August, 2000 VIDEO DATA PATH
1-11
Overall
Information
1.4.2 RECEPTION
First, the FCU stores the data from either an analog line or an ISDN line to the SAF
memory. (The data goes in parallel to the SCP, and is checked for error
lines/frames.)
The FCU then decompresses the data and transfers it to page memory. If image
rotation is possible, the image is rotated in the page memory. The data is
transferred to the mainframe.
JBIG Reception
When the machine receives data compressed with JBIG, the data is sent to PMU
for decompression. Then the data is stored in the page memory, and transferred to
the mainframe.
FCU
Modem
NCU CiG4 CiG4
Analog G3 ISDN G3 ISDN G4
Page Memory
SAF Memory
SCP
(DCR)
Base copier
SCP
(DCR)
Decompression
Error Check
Image Rotation
VPC
JBIG
compression
PMU Board
QM-CORDER
(Optional)
B383V502.WMF

28 August, 2000 SERVICE CALL CONDITIONS
2-1
Detailed
Descriptions
2. DETAILED SECTION
2.1 SERVICE CALL CONDITIONS
The fax unit makes an automatic service call when an SC code other than the
following is informed from the base copier.
NOTE: The service station’s fax number has to be programmed in advance, or the
machine cannot make a service call.
Exceptions
Address (H) Definition Default SC code
480A30 1st SC code - High byte (BCD) 09
480A31 1st SC code - Low byte (BCD) AA 9AA from 900 to 999
480A32 2nd SC code - High byte (BCD) FF
480A33 2nd SC code - Low byte (BCD) FF Not programmed
480A34 3rd SC code - High byte (BCD) FF
480A35 3rd SC code - Low byte (BCD) FF Not programmed
480A36 4th SC code - High byte (BCD) FF
480A37 4th SC code - Low byte (BCD) FF Not programmed
480A38 5th SC code - High byte (BCD) FF
480A39 5th SC code - Low byte (BCD) FF Not programmed
480A3A 6th SC code - High byte (BCD) FF
480A3B 6th SC code - Low byte (BCD) FF Not programmed
480A3C 7th SC code - High byte (BCD) FF
480A3D 7th SC code - Low byte (BCD) FF Not programmed
480A3E 8th SC code - High byte (BCD) FF
480A3F 8th SC code - Low byte (BCD) FF Not programmed
480A40 9th SC code - High byte (BCD) FF
480A41 9th SC code - Low byte (BCD) FF Not programmed
480A42 10th SC code - High byte (BCD) FF
480A43 10th SC code - Low byte (BCD) FF Not programmed
480A44 11th SC code - High byte (BCD) FF
480A45 11th SC code - Low byte (BCD) FF Not programmed
480A46 12th SC code - High byte (BCD) FF
480A47 12th SC code - Low byte (BCD) FF Not programmed
480A48 13th SC code - High byte (BCD) FF
480A49 13th SC code - Low byte (BCD) FF Not programmed
480A4A 14th SC code - High byte (BCD) FF
480A4B 14th SC code - Low byte (BCD) FF Not programmed
480A4C 15th SC code - High byte (BCD) FF
480A4D 15th SC code - Low byte (BCD) FF Not programmed
480A4E 16th SC code - High byte (BCD) FF
480A4F 16th SC code - Low byte (BCD) FF Not programmed
480A50 17th SC code - High byte (BCD) FF
480A51 17th SC code - Low byte (BCD) FF Not programmed

SERVICE CALL CONDITIONS 28 August, 2000
2-2
Address (H) Definition Default SC code
480A52 18th SC code - High byte (BCD) FF
480A53 18th SC code - Low byte (BCD) FF Not programmed
480A54 19th SC code - High byte (BCD) FF
480A55 19th SC code - Low byte (BCD) FF Not programmed
480A56 20th SC code - High byte (BCD) FF
480A57 20th SC code - Low byte (BCD) FF Not programmed
To add additional SC codes, program them in the blank addresses.
Wild Cards
This function allows ’A’ or ’a’, to be used as a wild card instead of numbers from 0
to 9. For example, ‘1AA’ or ‘1aa’ means all the SC codes from 100 to 199, and
‘39A’ or ‘39a’ means all the SC codes from 390 to 399.
The fax unit cannot make an automatic service call when a Fax SC code condition
has occurred. Refer to Troubleshooting for Fax SC code details.
Manual Service Call
If the service station needs a report, the user can make a service call manually, by
changing bit 7 of User Parameter 14 (0E) to ’1’.

28 August, 2000 SERVICE CALL CONDITIONS
2-3
Detailed
Descriptions
A sample auto service report
Paper Size Code Table
Code Size Code Size
005 A4 sideways 038 8.5 x 11" sideways
014 B5 sideways 160 11 x 17" lengthwise
031 Non-standard 164 8.5 x 14" lengthwise
132 A3 lengthwise 166 8.5 x 11" lengthwise
133 A4 lengthwise 172 5.5 x 8.5" lengthwise
134 A5 lengthwise
141 B4 lengthwise
142 B5 lengthwise
159 Non-standard
Total print counter
Paper Size Code
Paper Feed Station
Jam Location
* * * Auto Service Report (Date and Time) * * *
Problem Reason of the call - "SC Code" or "PM Call"
Service Monitor Report Contents
System Parameter List Contents
S C Latest 10 copier's SC codes
J A M BJ A M 2FEED SIZE005 0000000000
B383D500.WMF

SERVICE CALL CONDITIONS 28 August, 2000
2-4
2.1.1 PERIODIC SERVICE CALL
The periodic service call notifies the service station of the machine’s condition. The
call is made at a time interval programmed in the following RAM addresses:
Parameters Address (H)
Call interval: 01 through 15 month(s) (BCD)
00: Periodic Service Call Disabled 480379
Date and time of the next call Year: last two digits of the year (BCD) 48037A
Month: 01 through 12 (BCD) 48037B
Day: 01 through 31 (BCD) 48037C
Hour: 00 through 23 (BCD) 48037D
To change these settings after programming, change the call interval. The machine
then automatically changes the remaining parameters by referring to the interval
and the current date and time.
2.1.2 PM CALL
If PM alarm is enabled by the base copier’s SP mode and PM call is enabled by
system switch 01, the machine will make an automatic service call when the base
copier’s PM counter reaches the PM interval.
2.1.3 EFFECTIVE TERM OF SERVICE CALLS
If a time limit for the effectiveness of service calls is programmed, the machine
stops making automatic service calls after the time limit.
Program the time limit at the following addresses. This function is disabled when all
of these addresses are 00(H).
Address (H)
Year: last two digits of the year (BCD) 480383
Month: 01 through 12 (BCD) 480384
Day: 01 through 31 (BCD) 480385

28 August, 2000 SCANNING FEATURES
2-5
Detailed
Descriptions
2.2 SCANNING FEATURES
2.2.1 PARALLEL MEMORY TRANSMISSION
Using basic memory transmission, normally the machine starts dialing after the
document has been completely scanned. Using Parallel Memory Transmission, the
machine starts dialing at the same time the machine starts scanning. If the
document has multiple pages, the machine scans them into memory and sends
them while scanning continues.
NOTE: This function is only usable when sending an original from the ADF.
The following table shows the differences between normal memory transmission
and parallel memory transmission.
Normal memory tx Parallel memory tx
File Reserve Report if automatic report printout
is enabled. Not printed.
If the other terminal is
busy Tries to resend the message later. Continues scanning the document into memory, and
tries to resend it later.
If transmission failed Tries to resend the
remaining pages later. Tries to resend the remaining pages later.
If memory overflows
during scanning Stops scanning and erases all the scanned
pages from memory, or
sends all the scanned
pages (user's choice).
Stops scanning and hangs up
the communication when
memory overflow is detected.
Then erases all the scanned
pages from memory without
notifying the user.
If a document jam
occurred during
scanning
Stops scanning and
deletes all the scanned
pages from memory.
Stops scanning and hangs up
the communication when a
document jam is detected.
How and when the
scanned message is
erased from memory
The complete message is
erased after all the pages
have been sent.
Same as memory transmission.
Memory threshold to
start scanning into
memory
Depends on the setting of
communication switch 0D.
Default setting - 24kB
Depends on the setting of
system switch 10.
Default setting - 384 kB
Meaning of the stamp
mark Successfully stored. Successfully stored.
Batch numbering (P.
x/x) Enabled Not available unless the number of pages is programmed
manually.
Including a sample of
the image on reports Possible Possible
In the following cases, the machine uses normal memory transmission even if
parallel memory transmission is enabled.

SCANNING FEATURES 28 August, 2000
2-6
•Send later transmission
•Broadcasting
•Transmission of an Auto Document only
•Transfer request transmission
•When Image Rotation before Tx is enabled, and an A4 sideways or 8.5 x 11"
sideways original is detected
•If the other terminal is busy
•If the external telephone connected to the machine is in use
•When communication switch 0A, bit 0 is set to 1, and the machine is using
memory transmission when redialing
•When remaining memory space is less than the threshold for parallel
memory transmission (default = 384 kB)
•When the original is located on the exposure glass
When using G4 transmission, parallel memory transmission is normally disabled,
because transmission using G4 is much faster than scanning. As a result, G4
transmission using parallel memory transmission takes about twice as long as
normal memory transmission (using an ITU-T #1 test chart).
If the document contains pages with complicated images or it is a photo document
using halftone, parallel memory transmission may be faster than normal memory
transmission. If the user commonly sends this type of fax message, enable parallel
memory transmission for G4 transmission by changing system switch 11, bit 7 to 1.
Cross Reference
Parallel memory tx (G3) On/Off - User parameter 07, bit 2
Parallel memory tx (G4) On/Off - System switch 11, bit 7
Memory threshold for enabling parallel memory tx
- System switch 10, bits 0 to 7
Point of resumption of memory transmission upon redialing
- Communication switch 0A, bit 0

28 August, 2000 SCANNING FEATURES
2-7
Detailed
Descriptions
2.2.2 SUB-SCAN LENGTH CORRECTION USING ADF
The ADF informs the FCU of the original length. If the length data is incorrect or the
original is skewed, the machine corrects the sub-scan length to a standard paper
length.
The correction algorithm is follows.
Before sub-scan length
correction After sub-scan length correction
Under 135mm 128mm (B6 short edge length)
136mm – 157mm 148mm (A5 short edge length)
158mm – 192mm 182mm (B6 long edge length)
193mm – 223mm 210mm (A4 short edge length)
216mm (LT short edge length)
See the note below the table.
267mm – 287mm 279mm (LT long edge length)
288mm – 307mm 297mm (A4 long edge length)
355mm – 374mm 364mm (B4 long edge length)
410mm – 425mm 420mm (A3 long edge length)
Over 426mm 432mm (DLT long edge length)
NOTE: Depends on the settings of scanner switch 0C bit 6
Length Correction Enabled (Default setting)
When this feature is enabled, in the above example, the gray part of the original is
not scanned. However this allows the machine to rotate the image before
transmission in order to avoid unintentional reduction.
Transmitted ImageOriginal on DF
R
R
223 mm
210 mm or 8.5"
297 mm or 11"
90°
210 mm or 8.5"
Scan direction
on exposure glass
297 mm or 11"
Page
Top
Page
Bottom
B383D501.WMF

SCANNING FEATURES 28 August, 2000
2-8
Length Correction Disabled
In the above example, this feature is disabled. An unintentional reduction may
occur if the receiving machine cannot print on paper with a width of 297mm.
However, with length-correction disabled, the machine sends the entire image.
Cross Reference
•Image rotation before transmission – section 2.2.4.
•Sub-scan length correction on/off – Scanner switch 0C, bit 7
•Default setting is 0. (Sub-scan length correction is enabled)
•Setting A4 or LT size when sub-scan length correction is on.
– Scanner switch 0C bit 6. Default setting is 1. (Recognize as A4 or LT size)
Transmitted ImageOriginal on DF
Reduced
223 mm
210 mm or 8.5"
297 mm or 11"
210 mm or 8.5"
Scan direction
on exposure glass
223 mm
Page
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Page
Bottom
R
R
B383D502.WMF