Print quality difference with and wihout Hp app

[Darklife]

Ok this will be a little bit difficult to explain for a non-native English speaker because is a strange thing that never happened so please be patient.

I bought this printer yesterday,laserjet pro m15w. I tried to print a pdf document via google chrome/firefox and edge (in windows 10), I noticed that the printer is unable to print correctly a part of the document , a line with some dots, i mean are printed but is a really light print hard to see. but if i try to print this pdf through the hp smart app the document is printed correctly even with the missing lines/points.  

I try to explain better with more details, it seems that some parts are printed with a really light black, while if I use the hp app everything is printed correctly. Do you have any idea how to fix this problem? can't find in windows 10 a printer options for change the color for try to get more darker prints etc.

[Echo_Lake · Accepted solution]

@Darklife

Thank you for posting on the HP Support Community.
 

Don't worry as I'll be glad to help, to provide an accurate resolution, I need a few more details:

• Are you able to make copies from the printer?

Let's try these steps to resolve the issue: 

Download and run HP Print and Scan Doctor: Follow steps from the link: Click here

Root level uninstall and reinstall printer drivers: 

• Go to Control panel – Programs and feature – Select all the HP LaserJet printer entries and uninstall them.
• Now go to Control panel – Devices and printer – Select all the printer entries and remove the device.
• Then press the "windows key" + "r" to get the "Run" window open - Type "printui.exe /s" and press enter.
• Under print server properties, go to drivers - remove any entry there as well.
• Again, go to run window, type – “c:/programdata” – Go to Hewlett Packard folder, remove any printer related folders & files.

To reinstall, click here.
 

Hope this helps! Keep me posted for further assistance.
Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos, Thumbs Up" on the bottom right to say “Thanks” for helping!