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

High Definition LED Printheads - The 4 Key Advantages

  1. Smaller dot sizes create highly accurate output every time.
  2. LEDs have no moving parts so are ultra reliable with a life time guarantee.
  3. Incorporates ProQ technology for superior print quality.
  4. Environmental friendly - small and compact using less material resources.

no moving parts = greater reliability

OKI Printing Solutions 係以 LED (發光二極體) 技術聞名，此項創新技術能夠提供高鮮明度的列印，而且每一次輸出都是如此地令人屏息以待，因此幾乎所有最新一代的數位彩色印表機皆已採用高鮮明 LED 印字頭。數位 LED 印表機的運作原理與雷射印表機相同，但準確度卻更高，能夠輸出更高品質的列印。也由於LED 沒有雷射掃描光束的移動零件，所以更加穩定。LED 印字頭就是如此堅固可靠，因此我們也承諾提供終生保固。

運作原理

一台 A3 1200dpi 彩色印表機在光敏感光鼓中共有 61,440 顆 LED，用於將頁面上的影像「寫入」感光鼓中。感光鼓表面的靜電屬性會隨著光線的動作而改變，因為隨著 LED 的啟動，電壓也會逐漸偏向正電，以靜電放電方式在感光鼓表面繪出影像。

顯像滾輪的碳粉會開始充電，並受到靜電吸引而寫在感光鼓的影像上。為了將碳粉吸引到紙張上，轉印滾筒會將極高的正電電壓放到紙張朝下的一面上，碳粉便會轉印到紙張的正面，而且每種顏色會通過平直進紙路徑分布到紙張上，最後，紙張會移動至加熱器進行熱壓封印色彩。

由 3 x 3 印表機網點所構成半色調網格


半色調網格代表使用多層次 LED 網點產生出不同層級的飽和度