The short fibres of some recycled papers can foul certain machines resulting in paper-jams. This most commonly arises when printing double-sided, when the paper is passed through the machine a second time. Paper quality can vary enormously. Avoid thin paper, which is liable to wrinkle up when passed through a photocopier a second time. Paper is best when brought fresh from the manufacturer, used from unopened packets, or when opened, stored in relatively dry conditions.
Bulletins require no collation and stapling.
They can be filled relatively rapidly and so serve frequent release of new messages. If you are planning to do this, be sure to have the larger size paper in stock, and to see that the photocopier can handle enlargement.