HOW DOES A LASER PRINTER WORK? Xiaoxia Zhai

THE BASICS: STATIC ELECTRICITY The laser printing process is based on some very basic scientific principles applied in an exceptionally innovative way. The laser printing process is based on some very basic scientific principles applied in an exceptionally innovative way. The primary principle at work in a laser printer is static electricity. The primary principle at work in a laser printer is static electricity.

THE BASIC COMPONENTS OF A LASER PRINTER

THE BASICS: DRUM This drum assembly is made out of highly photoconductive material which can be discharged by light photons. This drum assembly is made out of highly photoconductive material which can be discharged by light photons.

THE BASICS: FUSER A fuser is a pair of heated rollers. A fuser is a pair of heated rollers. It melts the toner powder attaching the powder onto the paper permanently. It melts the toner powder attaching the powder onto the paper permanently.

THE LASER SCANNING ASSEMBLY A Laser A Laser A Movable Mirror A Movable Mirror A Lens A Lens

TONER BASICS A toner consists of a dry, powdery substance that is electrically charged so that it adheres to a drum, plate, or piece of paper charged with the opposite polarity. A toner consists of a dry, powdery substance that is electrically charged so that it adheres to a drum, plate, or piece of paper charged with the opposite polarity. The powder has two main ingredients: pigment and plastic. The powder has two main ingredients: pigment and plastic.

THE CONTROLLER The Conversation The Conversation Page Description Language Page Description Language Setting Up The Page Setting Up The Page

COLOR LASER PRINTERS

ADVANTAGES OF LASER PRINTERS Three main advantages of a laser printer over an inkjet printer: speed, precision and economy. Three main advantages of a laser printer over an inkjet printer: speed, precision and economy. It writes much faster than an inkjet, because laser moves quickly. It writes much faster than an inkjet, because laser moves quickly. It draws precisely without spilling excess powder. It draws precisely without spilling excess powder. It costs little to keep a laser printer running. It costs little to keep a laser printer running.

REFERENCES Flash Magazine Editorial, The Underground Guide To Laser Printers, Addison-Wesley Pub Co; Flash Magazine Editorial, The Underground Guide To Laser Printers, Addison-Wesley Pub Co; The PC Technology Guide, The PC Technology Guide, How Stuff Works, How Stuff Works,