Provided by: libsane-common_1.1.1-5ubuntu1_all bug


       sane-fujitsu - SANE backend for Fujitsu flatbed and ADF scanners


       The  sane-fujitsu  library  implements  a  SANE  (Scanner  Access  Now Easy) backend which
       provides access to most Fujitsu flatbed and ADF scanners.

       This document describes backend version 137, which shipped with SANE 1.0.32.


       This version supports every known model which speaks the Fujitsu  SCSI  and  SCSI-over-USB
       protocols.  Specifically, the SCSI M309x and M409x series, the SCSI fi-series, most of the
       USB fi-series, the USB ScanSnap S5xx/S15xx, and the  USB  iX1xx/5xx  series  scanners  are
       supported.  Please see the list at
       for details.

       This backend may support other Fujitsu scanners.  The  best  way  to  determine  level  of
       support  is  to  test the scanner directly, or to collect a trace of the windows driver in
       action.  Please contact the author for help or with test results.


       The following scanners are known NOT to work with this backend, either because they have a
       non-fujitsu  chipset,  or  an  unsupported  interface  type. Some of these scanners may be
       supported by another backend.

              SCSI:        SERIAL:      USB:
              ------------ ------------ ------------
              ScanStation  M3093E/DE/EX fi-4110EOX/2
              ScanPartner  M3096EX      fi-4010CU
              SP-Jr        M3097E+/DE   S300/S300M
              SP-10/10C    M3099A/EH/EX S1300/S1100
              SP-15C/300C               fi-60F/65F
              SP-600C/620C              fi-5015C


       Effort has been made to expose all hardware options, including:

       source s
              Selects the source for the scan. Options may include "Flatbed", "ADF  Front",  "ADF
              Back", "ADF Duplex", "Card Front", "Card Back", "Card Duplex".

       mode m
              Selects  the  mode for the scan. Options may include "Lineart", "Halftone", "Gray",
              and "Color".

       resolution, y-resolution
              Controls scan resolution. Setting --resolution  also  sets  --y-resolution,  though
              this behavior is overridden by some frontends.

       tl-x, tl-y, br-x, br-y
              Sets scan area upper left and lower right coordinates. These are renamed t, l, x, y
              by some frontends.

       page-width, page-height
              Sets paper size. Used by scanner to determine centering of  scan  coordinates  when
              using the ADF (Automatic Document Feeder) and to detect double feed errors.

       Other  options  will  be available based on the capabilities of the scanner: machines with
       IPC or DTC will have additional enhancement options, those with CMP will have  compression
       options, those with a printer will have a group of endorser options.

       Additionally,   several   'software'  options  are  exposed  by  the  backend.  These  are
       reimplementations of features provided natively by larger scanners,  but  running  on  the
       host  computer.  This  enables  smaller machines to have similar capabilities. Please note
       that these features are somewhat simplistic, and may not perform as  well  as  the  native
       implementations.  Note  also  that  these  features  all require that the driver cache the
       entire image in memory. This will almost certainly  result  in  a  reduction  of  scanning

              Requests the driver to detect the extremities of the paper within the larger image,
              and crop the empty edges.

              Requests the driver to detect the rotation of the paper within  the  larger  image,
              and counter the rotation.

       swdespeck X
              Requests  the  driver  to  find  and  remove dots of X diameter or smaller from the
              image, and fill the space with the average surrounding color.

       Use 'scanimage --help' to get a list, but be aware that some options may be settable  only
       when another option has been set, and that advanced options may be hidden by some frontend


       The configuration file fujitsu.conf is used to tell the backend how to look for  scanners,
       and provide options controlling the operation of the backend.  This file is read each time
       the frontend asks the backend for a list of scanners, generally  only  when  the  frontend
       starts.  If  the  configuration  file is missing, the backend will be unable to locate any

       Scanners can be specified in the configuration file in 4 ways:

       "scsi FUJITSU"
              Requests backend to search all scsi buses in the system for a device which  reports
              itself to be a scanner made by 'FUJITSU'.

       "scsi /dev/sg0" (or other scsi device file)
              Requests  backend  to  open the named scsi device. Only useful if you have multiple
              compatible scanners connected to your system, and need  to  specify  one.  Probably
              should not be used with the other "scsi" line above.

       "usb 0x04c5 0x1042" (or other vendor/product ids)
              Requests backend to search all usb buses in the system for a device which uses that
              vendor and product id. The device will then be queried to  determine  if  it  is  a
              Fujitsu scanner.

       "usb /dev/usb/scanner0" (or other device file)
              Some systems use a kernel driver to access usb scanners. This method is untested.

       The  only  configuration  option  supported  is "buffer-size=xxx", allowing you to set the
       number of bytes in the data buffer to something other than the compiled-in default,  65536
       (64K).  Some users report that their scanner will "hang" mid-page, or fail to transmit the
       image if the buffer is not large enough.

       Note: This option may appear multiple times in the configuration file. It only applies  to
       scanners discovered by 'scsi/usb' lines that follow this option.

       Note:  The  backend does not place an upper bound on this value, as some users required it
       to be quite large. Values above the default are not recommended, and may crash your OS  or
       lockup your scsi card driver. You have been warned.


       The  backend  uses  a  single  environment  variable,  SANE_DEBUG_FUJITSU,  which  enables
       debugging output to stderr. Valid values are:

              5  Errors
              10 Function trace
              15 Function detail
              20 Option commands
              25 SCSI/USB trace
              30 SCSI/USB writes
              31 SCSI/USB reads
              35 Useless noise


       Flatbed units may fail to scan at maximum area, particularly at high resolution.

       Any model that does not support VPD during inquiry will not function until an override  is
       added to the backend.

       CCITT Fax compression used by older scanners is not supported.

       JPEG  output  is supported by the backend, but not by the SANE protocol, so is disabled in
       this release. It can be enabled if you rebuild from source.


       m3091 backend: Frederik Ramm <frederik a t remote d o t org>
       m3096g backend: Randolph Bentson <bentson a t holmsjoen d o t com>
         (with credit to the unnamed author of the coolscan driver)
       fujitsu backend, m3093, fi-4340C, ipc, cmp, long-time maintainer:
         Oliver Schirrmeister <oschirr a t abm d o t de>
       m3092: Mario Goppold <mgoppold a t tbzpariv d o t tcc-chemnitz dot de>
       fi-4220C and basic USB support: Ron Cemer <ron a t roncemer d o t com>
       fi-4120, fi-series color, backend re-write, jpeg, current maintainer:
         m. allan noah: <kitno455 a t gmail d o t com>

       JPEG output and low memory usage support funded by:
         Archivista GmbH

       Endorser support funded by:
         O A S Oilfield Accounting Service Ltd
         1500, 840 - 7th Avenue S.W.
         Calgary, Alberta
         T2P 3G2 Canada

       Automatic length detection support funded by:
         Martin G. Miller mgmiller at

       Hardware donated, software image enhancement and fi-6/7xxx support funded by:
         Fujitsu Computer Products of America, Inc.

       iX500 support funded by:
         Prefix Computer Services


       sane(7), sane-scsi(5), sane-usb(5), sane-sp15c(5), sane-avision(5), sane-epjitsu(5)


       m. allan noah: <kitno455 a t gmail d o t com>

                                           13 Feb 2021                            sane-fujitsu(5)