sane-sm3840 - SANE backend for Microtek scanners with SCAN08 USB chip


   The  sane-sm3840  library  implements  a SANE (Scanner Access Now Easy)
   backend that provides access to some Microtek scanners with the  SCAN08
   USB chip.

   There  exist  backends  for  Microtek  scanners  with SCSI command set.
   Refer to sane-microtek(5) and sane-microtek2(5) for details.

   There also exists a Microtek 3600 series driver, see sane-sm3600(5) for

   At  present,  the  following scanners are known positively to work with
   this backend:

          Vendor     Product ID:     Remark:
          --------   --------------  -----------
          Microtek   ScanMaker 3840  All modes OK
          Microtek   ScanMaker 4800  All modes OK

   If you own a Microtek scanner with the SCAN08 chip other than the  ones
   listed  above,  it may or may not work with SANE.  Feel free to contact
   the backend author ( to report results with scanners
   not on the list.


   The following options are supported by the sm3840-driver:

   --mode color|gray|lineart|halftone
   Color or grayscale mode.

   --resolution 150|300|600|1200
   Pixels per inch for scans.

   --depth 8|16
   Note that the least significant bits of 16bpp mode may be noise.

   --brightness 1..4096
   Higher numbers increase brightness of returned image.

   --contrast 0.1..9.9
   Larger numbers decrease contrast of returned image.

   --lamp-timeout 1..15
   Time in minutes until the lamp is turned off after a scan.


   This backend does not support a configuration file right now.


          The static library implementing this backend.

          The shared library implementing this backend (present on systems
          that support dynamic loading).


          If the library was compiled with  debug  support  enabled,  this
          environment  variable controls the debug level for this backend.
          E.g., a value of 128 requests all debug output  to  be  printed.
          Smaller levels reduce verbosity. To see error messages on stderr
          set SANE_DEBUG_SM3840 to 1.


   sane-microtek2(5), sane-sm3600(5),


   Earle F. Philhower III (

                              11 Jul 2008                   sane-sm3840(5)


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.