I too have the problem of imageret 2400 not working in hp cp1215. First page shows fine diagonal lines on all colors- (some have reference this as a denim look) second and succeeding pages are perfect. True of all programs printed from.
Things I have tried that did not work:
Replaced toner cartridges
Tried different USB port
Updated firmware to latest version
Uninstalled all HP software
Deleted all HP or Hewlett Packard files remining in program files
Deleted all references to HP or Hewlett Packard in AppData
Deleted install directory from previous driver installation
Deleted all references to HP or Hewlett Packard in the registry
Reinstalled latest driver software
Still no joy.
I'm wondering if this may be a conflict with another program? Is this problem universal? Does anyone have a CP1215 that prints high quality on the first print?