現今商用光固化技術的列印系統，每層厚度是固定的，而每層成型軸拉升的速度也是相同的，將造成難以控制的離型力，無法保證有效率列印出工件。本研究以高解析度LCD之桌上型積層製造系統為基礎，探討下照式光固化機台在列印離型過程中拉力對物件成型的影響。
本研究在成型軸上裝置荷重元，透過荷重元以及利用不同圖形面積與不同拉升速度的拉力實驗來探討列印離型上升過程中的離型力變化。本研究藉由讀取切層完畢的圖檔，計算出每一層光罩的面積，在藉由拉力實驗的結果來進行推論，透過算式計算出每一層合適的成型軸拉升速度，使得成型物件更有效率，產生出新的列印運動命令，並把影像傳送至高解析度LCD螢幕，最後搭配光固化樹脂與力感測器，用較短時間達到印製工件。本研究使用三種不同高度的圖形進行實際列印，發現可以減少約13%的列印時間。
本研究也開發出一個拉力監控的程式，藉由拉升過程中拉力的感測，來判斷列印是否有異常發生，若是列印中發生異常的情況，監控系統會發送警報訊息給使用者，讓使用者可以即時的做處理，也可以經由攝影機線上觀看列印的成果。

Nowadays, the printing system using photo curing technology has a fixed thickness per layer, and the speed is the same during the pulled up stage. It will result in uncontrollable pulling force and can’t print the object efficiently. First, this study investigates the influence of lifting speed and layer area on pulling force during the lifting process for a high-resolution LCD desktop additive manufacturing system with bottom-illumination source.
In this study, a load cell is installed on the top of forming shaft for monitoring the pulling force of a built object during the lifting stage. With the load cell, the pulling force was measured with different graphic areas and different lifting speeds. The appropriate lifting speed of z-axis for each layer is calculated by a math model, which leads to efficiently build the molded object. Then a new printing G code will be generated, and the mask image will be transferred to the high-resolution LCD screen. Finally, the photo curing resin and the load cell will be used to achieve the printed workpiece in a short time. Finally, this study used three different heights of graphics for actual printing and found that it can reduce printing time about 13%.
Then this study also develops a pulling force monitoring program which can judge whether the printing has an abnormality by using the pulling force during the lifting process. If the printing fails, the monitoring system will send an alarm message to the user. The user can deal with the situation immediately and can also view the printed results via the camera on web.

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