When I go to text portion using kindle books, the page dims even if the brightness setting is at max

There are several ways you can print pages from Kindle books:

1. Highlight the passage you want to print. Highlighted text is stored in "My Notes and Marks" text file in the documents folder. You can then open this file with any word processing software and print the parts that you want
2. Use Kindle for PC. While having the page in question open, press Alt-PrintScreen. Paste the screenshot from the clipboard into photo processing software like Photoshop or MS Paint and print it from there. If you have Google Picasa installed, it will automatically save thescreenshot
3. Take a screenshot on the Kindle device by pressing Alt-Shift-G. Screenshots are stored as GIF files in the \documents folder. You can then open them in image processing software and print.
4. You can plain and simple put your Kindle face down on the copy machine and copy it as a regular piece of paper.