8-3Maintenance8Print YieldThis section describes the approximate number of printouts that can be made per cartridge.■ Approximate Print YieldCanon Cartridge EP-27: Approx. 2,500 printouts (A4 at 4% dot coverage*).* The term "A4 at 4% dot coverage" denotes a document on which the area covered with toner is 4% ofthe total area of an A4-size sheet.• The actual number of printouts that can be made per cartridge depends in part on the exposuresetting, room temperature, and humidity.• If you print a large number of documents which contain heavy print or many photographs, tonerconsumption will increase, and white streaks will appear on printouts sooner than indicated above.Toner consumption will also increase if you print with the platen glass cover left open.• If you print small size documents or documents with less dot coverage, you may be able to print moresheets of paper than indicated above. However, dark bands might appear on printouts if you keepusing the same cartridge for an extended period of time.Handling and Storing the CartridgeThis section describes the precautions to ensure optimum copy quality.■ Handling PrecautionsWARNING• Do not throw the cartridge into open flames, as this may cause the toner to ignite and result in burns ora fire.• The cartridge emits low level magnetic flux. If you use a cardiac pacemaker and feel abnormalities,please move away from the cartridge, and consult a physician.IMPORTANTNever attempt to disassemble the cartridge or open the drum protective shutter.NOTE• If the machine is brought from the cold outdoors into a warm room, or if the room is rapidly heated, condensationmay form inside the machine.This can adversely effect the quality of your printouts (e.g., copies are completely black).When the machine is exposed to such conditions, allow at least 2 hours for the machine to adjust to roomtemperature before attempting to use it.• When handling the cartridge, take care not to allow the toner on the jammed paper to come into contact with yourhands or clothing. If they become dirty, wash them immediately with cold water. Washing with warm water will setthe toner, and make it impossible to remove the toner stains.