We've just added basic printing support to our cadre of online project tools. Simple and effective, this lets you print exactly what you see on the screen. Look for the 'Print' image on the left-hand side of the Gantt Chart.
Clicking on this image button will bring up the print feature supported by the web browser. In this example, we are using Firefox. Chrome also works. We are using HTML5 to do the printing so other browsers will support it soon if not already. The print dialog reflects what's available in the underlying UI. You can select the printer and change settings just as you normally would.
In this example I'm actually going to click on the 'Properties' button and change the layout from portrait to landscape in order to see more of the timeline. You can fullsize the web page before printing to fit more pixels onto the paper. You can also adjust the IntelliGantt sliders at the bottom right to compress the timeline and the vertical separation of your tasks. The result is the task list and gantt chart printed out as you would expect..
This particular image was pulled from the native Microsoft Windows XPS format. A little easier than linking to a piece of paper in the office.