Output Hardware (Printers)
Use | Features | Operation | BJ300/330
Canon

Printer - Bubblejet
Case study : Canon BubbleJets

Features

• Provides durability and makes it possible to reduce the size of the print mechanism
• Permits the nozzles to be packed more closely, thus improving print quality. The Canon BJ300/330 prints up to 360 dpi.
• Greatly reduces operating noise. (The Canon BJ300.330 noise level is about 45 decibels).
• Quiet in operation
• Has a selection of Print speeds and quality.
• May use tractor feed or A4 cut sheet
• Use subtractive colours (unlike the VDU) - cyan (blue), magenta (red), yellow and black. We view colours as the result of light bouncing off the ink. (On a VDU colour is transmitted from the light source).
• P-POP (Plain paper optimised printing option, bonds an invisible ink optimiser to the paper before inks are applied. The ink then bonds to the optimiser. This reduces the ink diffusion.

Operation

Bubblejet:

Characters and graphics are printed by firing ink droplets at the paper from thin nozzles.

• When ink in the thin nozzles of the print head is heated rapidly, bubbles are produced.
• These bubbles expand so rapidly that the droplets of ink are ejected from the nozzle.
• Heat is generated by applying power to heating elements built into each nozzle.
• Each pulse of power produces the effect described in "Bubblejet -Principles".

2 After the pulse passes, the ink vapor condenses, drawing fresh ink into the nozzle.

Canon BJ300/330