sane-pixma(5)

NAME
sane-pixma - SANE backend for Canon Multi-Function Printers and CanoScan Scanners

DESCRIPTION
The sane-pixma library implements a SANE (Scanner Access Now Easy) backend that provides access to Canon PIXMA / i-SENSYS / imageCLASS / imageRUNNER multi-function devices (All-in-one printers) and the Canon CanoScan Flatbed/TPU scanners. The backend implements both the USB interface and network interface (using Canon's BJNP and MFNP protocols). The network interface supports scanners over IPv4 as well as IPv6 (MFNP over IPv6 is untested).

Currently, the following models work with this backend:

    PIXMA E510
    PIXMA G2000, G2010, G2100
    PIXMA MG2100, MG2200, MG2400, MG2500, MG2900, MG3000, MG3100
    PIXMA MG3200, MG3500, MG3600, MG4200, MG5100, MG5200, MG5300
    PIXMA MG5400, MG5500, MG5600, MG5700, MG6100, MG6200, MG6300
    PIXMA MG6400, MG7100, MG7500, MG7700, MG8200
    PIXMA MP140, MP150, MP160, MP170, MP180, MP190
    PIXMA MP210, MP220, MP230, MP240, MP250, MP260, MP270, MP280
    PIXMA MP360, MP370, MP390
    PIXMA MP450, MP460, MP470, MP480, MP490
    PIXMA MP500, MP510, MP520, MP530, MP540, MP550, MP560
    PIXMA MP600, MP600R, MP610, MP620, MP630, MP640
    PIXMA MP700, MP710, MP730, PIXMA MP750 (no grayscale)
    PIXMA MP800, MP800R, MP810, MP830
    PIXMA MP960, MP970, MP980, MP990
    PIXMA MX300, MX310, MX330, MX340, MX350, MX360, MX370
    PIXMA MX410, MX420, MX470, MX510, MX520, MX530, MX700, MX720
    PIXMA MX850, MX860, MX870, MX882, MX885, MX890, MX920, MX7600
    PIXMA TS3100, TS5000, TS6100, TS6200, TS8000, TS8200
    PIXUS MP10
    imageCLASS MF634Cdw, MF733Cdw
    imageCLASS MF3110, MF3240, MF4010, MF4018
    imageCLASS MF4120, MF4122, MF4140, MF4150
    imageCLASS MF4270, MF4350d, MF4370dn, MF4380dn
    imageCLASS MF4410, MF4430, MF4570dw, MF4660, MF4690
    imageCLASS MF5730, MF5770, MF6550, MPC200
    imageCLASS D420, D480, D530, D570
    i-SENSYS MF210, MF230, MF240, MF620, MF630, MF640, MF645C, MF730
    i-SENSYS MF731/733, MF741/743, MF3010, MF4320d, MF4330d, MF4500
    i-SENSYS MF4700, MF4800, MF6100, MF8030, MF8200C, MF8300
    imageRUNNER 1020/1024/1025, 1133
    CanoScan 8800F, 9000F, 9000F Mark II
    CanoScan LiDE 300, 400
    MAXIFY MB2000, MB2100, MB2300, MB2700, MB5000, MB5400

The following models are not well tested and/or the scanner sometimes hangs and must be switched off and on.

    PIXMA MP760, MP770, MP780, MP790

The following models may use the same Pixma protocol as those listed above, but have not yet been reported to work (or not). They are declared in the backend so that they get recognized and activated. Feedback in the sane-devel mailing list welcome.

    PIXMA E400, E410, E460, E470, E480, E500, E560, E600, E610
    PIXMA E3100, E3300, E4200
    PIXMA MG4100, MG6500, MG6600, MG6800, MG6900, MG8100
    PIXMA MP375R, MP493, MP495, MP740
    PIXMA MX320, MX390, MX430, MX450, MX490, MX710
    PIXMA G3000, G3010, G4000, G4010, G6000, G6080
    PIXMA TR4500, TR7500, TR7530, TR8500, TR8530, TR8580, TR9530
    PIXMA TS5100, TS6000, TS6130, TS6180, TS6230, TS6280, TS6300
    PIXMA TS6330, TS6380, TS7330, TS8100, TS8130, TS8180, TS8230
    PIXMA TS8280,, TS8300, TS8330, TS8380, TS9000, TS9100, TS9180
    PIXMA TS9500, TS9580
    PIXUS MP5, XK50, XK60, XK70, XK80
    imageCLASS MF810/820, MF5630, MF5650, MF5750, MF8170c
    imageCLASS MPC190, D550
    i-SENSYS MF110, MF220, MF260, MF410, MF420, MF510, MF520, MF740
    i-SENSYS MF5880dn, MF5900, MF6680dn, MF8500C
    MAXIFY MB5100, MB5300

The following models may use partly the same Pixma protocol as other devices listed above, but may still need some work. They are declared in the backend as experimental and need the environment variable PIXMA_EXPERIMENT=1 to get recognized and activated. Snoop logs are required to further investigate, please contact the sane-devel mailing list.

    -- none --

The backend supports:

    * resolutions of 75, 150, 300, 600, 1200, 2400, 4800, and 9600 DPI (some maybe buggy),
    * color and grayscale mode, as well as lineart on certain models,
    * a custom gamma table,
    * Automatic Document Feeder, Simplex and Duplex.
    * Transparency Unit, 24 or 48 bits depth. Infrared channel on certain models.

The device name for USB devices is in the form pixma:xxxxyyyy_zzzzz where x, y and z are vendor ID, product ID and serial number respectively.

Example: pixma:04A91709_123456 is a MP150.

Device names for BJNP/MFNP devices is in the form pixma:aaaa_bbbbb where aaaa is the scanners model and bbbb is the hostname or ip-adress.

Example: pixma:MF4800_192.168.1.45 is a MF4800 Series multi-function peripheral.

This backend, based on cloning original Canon drivers protocols, is in a production stage. Designed has been carried out without any applicable manufacturer documentation, probably never available. However, we have tested it as well as we could, but it may not work in all situations. You will find an up-to-date status at the project homepage. (See below). Users feedback is essential to help improve features and performances.

OPTIONS
Besides "well-known" options (e.g. resolution, mode etc.) pixma backend also provides the following options, i.e. the options might change in the future.
The button status can be polled i.e. with 'scanimage -A'.
Button scan is disabled on MAC OS X due to darwin libusb not handling timeouts in usb interrupt reads, but may work when using the network protocol.

adf-wait
    This option enables and sets the time in seconds waiting for a document inserted into the Automatic Document Feeder. The maximum allowed waiting time is 3600 sec (= 1 hour).

button-controlled
    This option can be used by applications (like scanadf(1) and scanimage(1)) in batch mode, for example when you want to scan many photos or multiple-page documents. If it is enabled (i.e. is set to true or yes), the backend waits before every scan until the user presses the "SCAN" button (for MP150) or the color-scan button (for other models). Just put the first page in the scanner, press the button, then the next page, press the button and so on. When you finished, press the gray-scan button. (For MP150 you have to stop the frontend by pressing Ctrl-C for example.)

button-update (deprecated)
    (write only) In the past this option was required to be set to force reading of the button status for button-1 and button-2. The sane-pixma no longer requires this option to be used: if no fresh data is available, it will be now requested automatically from the scanner. This option is left for backward compatibility reasons.

button-1 button-2
    (read only) These options will return the value of the respective buttons. value 0 means that the button was not pressed, 1 is returned when the button was pressed. Some scanners with more than two buttons send the button number as target.

original
    (read only) Returns the value of the type or size of original to be scanned if the scanner provides that data. Known values of type: 1 = document, 2 = foto, 5 = film. Known values of size: 1 = A4, 2 = Letter, 8 = 10x15, 9 = 13x18, b = auto. Not all scanners can provide this data.

target
    (read only) Returns the value of the target of the scan operation if the scanner provides that data. The values depend on the scanner type. Known values: 1 = save to disk, 2 = save to pdf, 3 = send to email, 4 = send to application or 1 = JPEG, 2 = TIFF, 3 = PDF, 4 = Compact PDF. For some scanners this value is equivalent to the number of the pressed button. Not all scanners can provide this data.

scan-resolution
    (read only) Returns the resolution of the scan operation if the scanner provides that data. Known values: 1 = 75 dpi, 2 = 150 dpi, 3 = 300 dpi, 4 = 600 dpi. Not all scanners can provide this data.

FILES

/usr/lib64/sane/libsane-pixma.a
    The static library implementing this backend.

/usr/lib64/sane/libsane-pixma.so
    The shared library implementing this backend (present on systems that support dynamic loading).

/etc/sane.d/pixma.conf
    The backend configuration file (see also description of SANE_CONFIG_DIR below).

    The file contains an optional list of networked scanners using the BJNP or MFNP protools (See below for datails on networking support for scanners). Normally only scanners that cannot be auto-detected because they are on a different subnet shall be listed here. If you do not use Linux and your OS does not allow enumeration of interfaces (i.e. it does not support the getifaddrs() function) you also may need to add your scanner here as well.

    Scanners shall be listed in the configuration file as follows:

        <method>://<host>[:port][/timeout=<value>]

    where method indicates the protocol used (bjnp is used for inkjet multi-functionals and mfnp is used for laser multi-functionals).

    host is the hostname or IP address of the scanner, e.g. bjnp://10.0.1.4 for IPv4, bjnp://[2001:888:118e:18e2:21e:8fff:fe36:b64a] for a literal IPv6-address or bjnp://myscanner.mydomain.org for a hostname.

    The port number is optional and in normally implied by the method. Port 8610 is the standard port for mfnp, 8612 for bjnp.

    A scanner specific timeout value for the network protocol can be set using the bjnp-timeout parameter. The value is in ms.

    Define scanners each on a new line.

    More globally applicable timeouts can be set using the bjnp-timeout parameter as follows:

        bjnp-timeout=<value>

    A timeout defined using bjnp-timeout will apply to the following scanner definitions in the file. If required the bjnp-timeout setting can be defined multiple times, where each settng will apply only to the scanners that follow the setting. The last setting is used for the auto discovered scanners. If not explicitly set, the default 1000ms setting will apply.

    Setting timeouts should only be required in exceptional cases.

If so desired networking can be disbled as follows:

    -   If the first non-commented line contains networking=no all networking will be disabled. This will cause all further statements in the configuration file to be ignored.

    -   A line that contains auto_detection=no will cause auto-detection to be skipped. Explicitely defined network scanners will still be probed.

USB SUPPORT
USB scanners will be auto-detected and require no configuration.

NETWORKING SUPPORT
The pixma backend supports network scanners using the so called Canon BJNP and MFNP protocols.

Canon seems to be dropping support for these protocols in recent scanners. To verify if your scanner supports one of these protocols, check the content of the _scanner._tcp service entry in mDNS/DNS-SD (using for example avahi-discover). If that does not list port 8610 or 8612 your scanner probably does not support the mfmp or bjnp protols.

Both IPv4 and IPv6 are supported, but IPv6 is as yet untested with MFNP. Please report your results on the mailing list.

Configuration is normally not required. The pixma backend will auto-detect your scanner if it is within the same subnet as your computer if your OS does support this.

If your scanner can not be auto-detected, you can add it to the pixma configuration file (see above).

FIREWALLING FOR NETWORKED SCANNERS
The sane pixma backend communicates with port 8610 for MFNP or port 8612 for BJNP on the scanner. So you will have to allow outgoing traffic TO port 8610 or 8612 on the common subnet for scanning.

Scanner detection is slightly more complicated. The pixma backend sends a broadcast on all direct connected subnets it can find (provided your OS allows for enumeration of all netowrk interfaces). The broadcast is sent FROM port 8612 TO port 8610 or 8612 on the broadcast address of each interface. The outgoing packets will be allowed by the rule described above.

Responses from the scanner are sent back to the computer TO port 8612. Connection tracking however does not see a match as the response does not come from the broadcast address but from the scanners own address. For automatic detection of your scanner, you will therefore have to allow incoming packets TO port 8612 on your computer. This applies to both MFNP and BJNP.

So in short: open the firewall for all traffic from your computer to port 8610 (for MFNP) or 8612 (for BJNP) AND to port 8612 (for both BJNP and MFNP) to your computer.

With the firewall rules above there is no need to add the scanner to the pixma.conf file, unless the scanner is on a network that is not directly connected to your computer.

ENVIRONMENT

SANE_DEBUG_PIXMA
    If the library was compiled with debug support enabled, this environment variable controls the debug level for this backend itself. Higher value increases the verbosity and includes the information printed at the lower levels.
    0 print nothing (default)
    1 print error and warning messages (recommended)
    2 print informational messages
    3 print debug-level messages
    4 print verbose debug-level messages
    11 dump USB traffic
    21 full dump USB traffic

SANE_DEBUG_BJNP
    If the library was compiled with debug support enabled, this environment variable controls the debug level for the BJNP and MFNP network protocols for this backend. Higher value increases the verbosity and includes the information printed at the lower levels.
    0 print nothing (default)
    1 Print error and warning messages (recommended)
    2 Print high level function tracing information
    3 Print more detailed protocol tracing information
    4 Print protocol headers
    5 Print full protocol contents

PIXMA_EXPERIMENT
    Setting to a non-zero value will enable the support for experimental models. You should also set SANE_DEBUG_PIXMA to 11.

SANE_CONFIG_DIR
    This environment variable specifies the list of directories that may contain the configuration file. Under UNIX, the directories are separated by a colon (`:'), under OS/2, they are separated by a semi-colon (`;'). If this variable is not set, the configuration file is searched in two default directories: first, the current working directory (".") and then in /etc/sane.d. If the value of the environment variable ends with the directory separator character, then the default directories are searched after the explicitly specified directories. For example, setting SANE_CONFIG_DIR to "/tmp/config:" would result in directories "tmp/config", ".", and "/etc/sane.d" being searched (in this order).

SEE ALSO
sane(7), sane-dll(5),

In case of trouble with a recent Pixma model, try the latest code for the pixma backend, available in the Sane git repository at:
https://gitlab.com/sane-project/backends.git

You can also post into the Sane-devel mailing list for support.

AUTHORS
Wittawat Yamwong, Nicolas Martin, Dennis Lou, Louis Lagendijk, Rolf Bensch

We would like to thank all testers and helpers. Without them we could not be able to write subdrivers for models we don't have. See also the project homepage.