In separate announcements, Topjet Technology has announced that it now has compatible versions of Brother’s TN821, TN851, TN810, and TN815 toner cartridges and Canon’s cartridge 067 and 067H. Brother Compatibles Topjet issued its announcement about its new compatibles toner cartridges for Brother devices on February 17. Topjet is targeting the Workhorse Series A4 color laser
