Strange Printing Issue With New HP & Pages

Hello!

I have a very strange printing issue with a new HP printer. I have written pages documents heavy in Texts which are located within tables. The documents print fine on a Cannon and Epson printer and look great but when I print the document on my new HP Laserjet Pro 400 Colour M451nw some of the text on some rows come out of the printer looking like they are bold / slightly fuzzy. This only happens with some of the rows of text, not all of them. The font is the same in every row with the same format.

You can see this in the attached image. The first line (Thanks very much) has printed correctly but the subsequent lines look bold / slightly fuzzy.

After a lot of testing the only way I can resolve this is if I copy the content into a new pages document and only then it will print and look ok with the HP printer.

This must be a problem within my origional document. I would simply copy and paste everything into a new document however this would take a very, very long time (over 5 years of work producing teaching materials and over 100 documents and thousands of tables and formatting that cannot be copied and pasted).

Also, on other printers you can see the lines seperating each row of the table. These lines are not visible on the HP print outs, even when the table is copied into a new document.

Has anyone come accross an issue like this before? Is there a way I can fix this without creating a new document? Do I need to get a new another new printer (the 4th printer this week!)?

Any advise, wise words would be greatly apprechiated!

Thanks!