On my first installation of Corel Draw X5 I faced some problems while printing the documents on My laser Printer. Basic problems were Texts with 100% Black fill doesn't print in black rather prints in dots. Any white filled text over any black object doesn't print at all. White filled shapes prints with fine dots inside the object. etc.
After a couple of hours I could solve this issue but that too isn't a 100% cure.
Before printing you neet to go to : Tools > Color Management > Default Settings and select the "Simulate Color Management Off" and Check "Preserve pur black" options as shown in the picture.
This will turn the onscreen display to RGB but prints all correct. Again when printing is over, set the made changes to their default value to make the onscreen display correct.
If anybody find any other solution to fix this problem please share.