High Definition LED Printheads
Our innovative High Definition LED Printheads outperform laser printing. Fundamental to any printer is its light source. For over 20 years OKI Printing Solutions have pioneered digital LED printing which has clear advantages over laser, delivering superior images with finer detail...fast! Unlike laser printers, there are no moving parts within the LED mechanism, which means greater reliability.
High Definition LED Printheads - The 4 Key Advantages
- Smaller dot sizes create highly accurate output every time.
- LEDs have no moving parts so are ultra reliable with a life time guarantee.
- Incorporates ProQ technology for superior print quality.
- Environmental friendly - small and compact using less material resources.
no moving parts = greater reliability
OKI Printing Solutions is known for its LED (Light Emitting Diode) technology. This innovation delivers High Definition printing - for breathtaking output every time. All our latest generation of digital colour printers feature High Definition LED Printheads. These digital LED printers use the same principles as lasers to print, but being more accurate they can produce higher quality prints. LEDs don't have moving parts like a laser scanning beam, so are more reliable. In fact, LED heads are so reliable they come with a life time guarantee.
The way it works
An A3 1200dpi colour printer has 61,440 digital LEDs across the width of the photo-sensitive drum that 'write' the page image on to the drum. The action of light changes the static properties of the drum surface, so as the LEDs start up, the voltage becomes more positive, sketching out an image on the drum surface in static charge.
Toner from the developer roller is then charged and is attracted electrostatically to the image written on the drum. To get the toner onto the paper the transfer roller is charged to a high positive voltage on the underside of the paper. The toner is then transferred across to the paper surface. Each colour is laid down onto the paper while passing through the straight paper path. Finally, the paper moves to the fuser where the colours are heat pressure sealed.
A halftone cell made from 3 x 3 printer dots
A halftone cell representing different levels of intensity using multi-level LED dots