https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/HP-LaserJet-Pro-MFP-M429dw-da-yin-ji-zi-dong-shuang-mian-da-yin-wen-ti/m-p/1088167#M243066 <P>打印机安装后 打印时“双面打印”是默认勾选的，每次打印都是自动双面打印。后来打印了几次单面的，再想打印双面的时候发现打印预览里已经没有双面打印字样。百度后，可以把“手动双面打印”调处来，但是没有了自动的“双面打印”，就是最初默认的选项不见了！！！求指点！！</P> Tue, 27 Apr 2021 10:59:54 GMT 布吉岛 2021-04-27T10:59:54Z https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/HP-LaserJet-Pro-MFP-M429dw-da-yin-ji-zi-dong-shuang-mian-da-yin-wen-ti/m-p/1088167#M243066 <P>打印机安装后 打印时“双面打印”是默认勾选的，每次打印都是自动双面打印。后来打印了几次单面的，再想打印双面的时候发现打印预览里已经没有双面打印字样。百度后，可以把“手动双面打印”调处来，但是没有了自动的“双面打印”，就是最初默认的选项不见了！！！求指点！！</P> Tue, 27 Apr 2021 10:59:54 GMT https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/HP-LaserJet-Pro-MFP-M429dw-da-yin-ji-zi-dong-shuang-mian-da-yin-wen-ti/m-p/1088167#M243066 布吉岛 2021-04-27T10:59:54Z https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/HP-LaserJet-Pro-MFP-M429dw-da-yin-ji-zi-dong-shuang-mian-da-yin-wen-ti/m-p/1088270#M243081 <P>控制面板-设备与打印机里右键打印机选择第六个&nbsp; &nbsp;打印机属性，里面选择设备设置的那个，里面的双面器是选择 已安装&nbsp; 吗？</P> Wed, 28 Apr 2021 03:15:07 GMT https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/HP-LaserJet-Pro-MFP-M429dw-da-yin-ji-zi-dong-shuang-mian-da-yin-wen-ti/m-p/1088270#M243081 叫我巧大人 2021-04-28T03:15:07Z