/usr/share/applications/hplj1020.desktop is in printer-driver-foo2zjs-common 20140925dfsg0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 | [Desktop Entry]
Name=Reactivate HP LaserJet 1018/1020 after reloading paper
Comment=Click the button in this program when your printer ran out of paper and you have refilled the paper
# zExec=usb_printerid /dev/usb/lp0
Exec=/usr/share/foo2zjs/hplj10xx_gui.tcl
Terminal=false
Type=Application
Icon=/usr/share/pixmaps/hplj1020_icon.png
StartupNotify=true
Categories=System;
X-Desktop-File-Install-Version=0.10
NoDisplay=true
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