HP laser jet 2055DN print Duplex/both/two sides 双面打印

2055DN在WINDOWS 7下安装驱动程序后,不能实现双面打印.

因为驱动不能自动更新设备状态. 所以需要自己调节:

On the driver "Printer Properties" dialogue, select the "Device Settings" tab (may only be available when logged in with administrative rights) and change the 'duplex unit' option from "Not installed" to "Installed".

在打印机属性-->设备设置-(可能需要管理员权限)-->双面打印单元--设置成"已安装".