1. Install Driver
  To install driver, please extract the driver package to the temporarily folder, 
  for example: LinuxDriver.
  Then switch into the LinuxDriver folder and input the following command line in terminal window.
      $ sudo bash ./install
PS: refer "ARGOX_RPi_Printer_Driver_install_uninstall_Instruction.pdf"

2. Uninstall Driver
  To uninstall driver, please switch into the temporarily folder you created when you install the driver 
  and input the following command line in terminal window.
      $ sudo bash ./uninstall

  If the temporarily folder does not exist, you can extract the driver package to the temporarily folder, 
  for example: LinuxDriver.
  Then switch into the LinuxDriver folder and input the following command line in terminal window.
      $ sudo bash ./uninstall
PS: refer "ARGOX_RPi_Printer_Driver_install_uninstall_Instruction.pdf"

3. Add Media Size to ppd file
  If you want to add a new media size to the PPD file, for example: 2.5X2.5".
  you can open the ppd file yourself and refer to the content to add it, 
  or you can use the addmediasize program to complete the work.
  A.Open terminal window, and into the folfer that have addmediasize program.
  B.Input the command to change mode.
      $ sudo chmod 755 ./addmediasize
  C.Input the command to add 2.5X2.5" media size to all ppd files in the installation directory.
      $ sudo ./addmediasize -w250 -h250
  D.Remove the original printer device.
  E.Instll the printer device again.
  F.Check whether the size you just added appears in the media size of the printer device.
    PS: To check "Printer Options -> Media Size" of the printer device.
  F.Check the "Printer Options -> Media Size" of the printer device to see if the size you just added is available.
PS: refer "How to add media size.pdf"

  addmediasize program instruction:
  Usage: addmediasize [OPTION]
  Add media size to ppd file.

  Options:
    -w, --width=n     Set the width of the media, the media size the user wants to add to the ppd file.(unit:0.01inch)
    -h, --height=n    Set the height of the media, the media size the user wants to add to the ppd file.(unit:0.01inch)
    -f, --filepath=n  Set the ppd filename, the media size will add to it.
                      If this parameter is not used, the media size will add to all ppd files in the installation directory.
    -?, --help        help.
   example:
     addmediasize -w250 -h250
     addmediasize -w 250 -h 250
     addmediasize --width=250 --height=250
     addmediasize -w250 -h250 -f /usr/share/cups/model/argox/argox_P4-250_pplb.ppd
     addmediasize --width=250 --height=250 --filepath=/usr/share/cups/model/argox/argox_P4-250_pplb.ppd
  
