You can thicken thin lines that are too thin to print.
Load paper in the printer .
Open the file you want to print.
Select Print or Print Setup from the File menu.
Select your printer.
Select Preferences or Properties to access the printer driver window.
Click Image Options from Color Correction on the More Options tab.
Select Emphasize Thin Lines.
Set the other items on the Main and More Options tabs as necessary, and then click OK.
Click Print.