Good program for printable Gantt Charts?

I'd like to make a Gantt chart using software, but the programs I have at my school (ConceptDraw, Microsoft Project) that can make Gantt charts can't make charts that are easy to print, as the Gantt charts are very long, making the text on the chart unreadable. Is there a program out there somewhere that I can use to create and format Gantt charts before I print them? I'd like to be able to change fonts, text sizes, etc.