Scanning from an eSCL Device Using Command Line

eSCL is HP's and Apple's scan protocol. (IETF standards track even?) Uses XML.

xmllint is from the libxml2-utils package.

Get Scanner Status

%  curl -s http://localhost:8080/eSCL/ScannerStatus | xmllint -format -

Get Scanner Capabilities

% curl -s http://localhost:8080/eSCL/ScannerCapabilities | xmllint -format -

Start a scan job

%  curl -v -X POST -d @scansettings.xml  http://localhost:8080/eSCL/ScanJobs

Device should respond with a 201 + Location of the new job. The Location will have a jobid (integer) (or a UUID).

Retrieve the scan job (in this example, 208 is the jobid from the 201 response to the POST)

% curl -s http://localhost:8080/eSCL/ScanJobs/208/NextDocument > out.dat

The 'out.dat' file should be the scanned image. Should be a jpeg or pdf or some other image. Jpeg is most likely.

% file out.dat

out.dat: JPEG image data, JFIF standard 1.01

Simple(ish) scansettings.xml

<?xml version="1.0" encoding="UTF-8"?>
<scan:ScanSettings xmlns:pwg="http://www.pwg.org/schemas/2010/12/sm" xmlns:scan="http://schemas.hp.com/imaging/escl/2011/05/03">
  <pwg:Version>2.0</pwg:Version>
  <pwg:ScanRegions>
    <pwg:ScanRegion>
      <pwg:Height>3300</pwg:Height>
      <pwg:ContentRegionUnits>escl:ThreeHundredthsOfInches</pwg:ContentRegionUnits>
      <pwg:Width>2550</pwg:Width>
      <pwg:XOffset>0</pwg:XOffset>
      <pwg:YOffset>0</pwg:YOffset>
    </pwg:ScanRegion>
  </pwg:ScanRegions>
  <pwg:InputSource>Platen</pwg:InputSource>
  <scan:ColorMode>Grayscale8</scan:ColorMode>
</scan:ScanSettings>