LED line in printers
The LED (LED - from Light Emitting Diode) ruler is a source of light that illuminates the surface of the photodrum in LED printers. At its core, it is an alternative to a laser with an optical scanning system in a classical laser printer and completely replaces its function without changing the technology of electrography.
The LED line consists of a set of individual light sources - LEDs placed on a textolite board. One inch of the LED bar can accommodate 300, 600, or 1200 individual LEDs, which will determine the resolution of the printer in which the LED bar is used.
Light from the sources passes through the lens, collected in 2 rows.
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The lenses are 7 mm pieces of optical fiber. Each of these segments carries light from several sources through it.
at the same time the light passes through the lens in a spiral and always hits a strictly defined place of the photodrum.
An important parameter is the correct focal length from the end of the lens to the surface of the photodrum. If it is not sustained, the image on the print will be blurred. To ensure the required distance in color LED printers, special precision focusing inserts are used, one edge resting on the surface of the photodrum and the other on the adjusting eccentric placed on the body of the LED line.
Due to the design features of LED technology has obvious advantages compared with conventional laser technology, but more on that next time.
Sergey Lebedev, OKI Marketing Director
The LED line consists of a set of individual light sources - LEDs placed on a textolite board. One inch of the LED bar can accommodate 300, 600, or 1200 individual LEDs, which will determine the resolution of the printer in which the LED bar is used.
Light from the sources passes through the lens, collected in 2 rows.
')
The lenses are 7 mm pieces of optical fiber. Each of these segments carries light from several sources through it.
at the same time the light passes through the lens in a spiral and always hits a strictly defined place of the photodrum.
An important parameter is the correct focal length from the end of the lens to the surface of the photodrum. If it is not sustained, the image on the print will be blurred. To ensure the required distance in color LED printers, special precision focusing inserts are used, one edge resting on the surface of the photodrum and the other on the adjusting eccentric placed on the body of the LED line.
Due to the design features of LED technology has obvious advantages compared with conventional laser technology, but more on that next time.
Sergey Lebedev, OKI Marketing Director
Source: https://habr.com/ru/post/160873/
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