User Guide for HP J5730 / J5740 / J5750 / J5780 / J5785 / J5788
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You can change the Resolution and Lighter / Darker settings for documents that you are faxing......
Change the fax resolution Change the Lighter / Darker setting Set new default settings...
These settings do not affect copy settings...Copy resolution and lightness/ darkness are set independently from fax resolution and lightness/darkness...Also, the settings that you change from the control panel do not affect faxes you send from your computer......