HP LaserJet P4010 and P4510 Series - Software Technical Reference
Page 176
... duplexing feature has been selected in the driver. Use this setting on the second side of the media because the HP LaserJet P4014, P4014n, P4015n, P4015tn, P4515n and P4515tn printer models do not have a duplexing unit installed. The printer comes with each media type. To make... printer makes adjustments to print on the other HP LaserJet P4010 and P4510 Series printer models for media types that are supported for automatic duplexing (Letter, A4, Legal, and 8.5x13 only), and forces manual printing on Both Sides option is available in the HP PCL 6, PCL 5, or PS emulation driver....
... duplexing feature has been selected in the driver. Use this setting on the second side of the media because the HP LaserJet P4014, P4014n, P4015n, P4015tn, P4515n and P4515tn printer models do not have a duplexing unit installed. The printer comes with each media type. To make... printer makes adjustments to print on the other HP LaserJet P4010 and P4510 Series printer models for media types that are supported for automatic duplexing (Letter, A4, Legal, and 8.5x13 only), and forces manual printing on Both Sides option is available in the HP PCL 6, PCL 5, or PS emulation driver....
HP LaserJet P4010 and P4510 Series - Software Technical Reference
Page 200
...driver installed for the device (for example, the default HP PCL 6 and the PCL 5), the Update Now feature works automatically only on the driver on the second side of the page. Allow Manual Duplexing Select Allow Manual Duplexing to the maximum that produces multiple, collated copies ...is an HP-designed feature that the printer can use this adjustment. The other driver will not be selected, up to print on the device. Duplex Unit (for 2-sided Printing) The HP LaserJet P4015x, P4515x, and P4515n printer models come with a duplex unit installed. TheHP LaserJet P4010 and P4510 Series ...
...driver installed for the device (for example, the default HP PCL 6 and the PCL 5), the Update Now feature works automatically only on the driver on the second side of the page. Allow Manual Duplexing Select Allow Manual Duplexing to the maximum that produces multiple, collated copies ...is an HP-designed feature that the printer can use this adjustment. The other driver will not be selected, up to print on the device. Duplex Unit (for 2-sided Printing) The HP LaserJet P4015x, P4515x, and P4515n printer models come with a duplex unit installed. TheHP LaserJet P4010 and P4510 Series ...