Brother DR-3325 Genuine Drum Unit 30,000 Pages

A Genuine Drum for an Older Brother Laser

The genuine Brother DR-3325 is a laser drum unit rated by Brother at approximately 30,000 pages at one page per job.

A drum unit is not a toner cartridge. The toner cartridge holds the powder; the drum is the photosensitive cylinder the toner is laid onto before it transfers to the page. They are separate parts on separate replacement schedules, and a laser printer needs both. This is a drum for an older Brother mono laser generation. Brother Australia still lists and prices the drum, but it has removed those printer models from its website, so there is no current Brother-published compatibility list for us to reproduce. Rather than guess at one, we would rather you told us your printer model and we confirmed the fit before you order.

Brother rates this drum at approximately 30,000 pages at one page per job. That qualifier matters more than it looks. Drum wear is driven by how often the drum cycles, not purely by how many sheets pass through, and the printer spins the drum up for every job - so a hundred single-page jobs cost far more drum life than one hundred-page document. Offices printing longer documents routinely get well past the rated figure.

Telling the drum apart from the toner is the question we get asked most. Faded or washed-out print usually means toner. Marks, bands or ghosting that repeat at a regular interval down every page usually mean the drum. The printer also tracks drum life separately from toner level and will prompt you when the drum is due. A genuine Brother drum holds the imaging geometry the printer was built around, which is what keeps streaks, ghosting and misregistration out of the output. Replacement is an end-user job - the old unit comes out the front and the new one goes in, with no tools and no service call.