METHOD OF CALIBRATING INKJET BASED THREE DIMENSIONAL PRINTING SYSTEM

In an aspect of the disclosure a three dimensional printing system includes an elevator mechanism (6) for supporting a build plate (4), a printhead assembly (2), a movement mechanism (10), and a controller (16). The printhead assembly includes a printhead (8) and a planarizer (24) arranged along a scan axis. The movement mechanism is for scanning the printhead across the build plate. The controller is configured to: (a) print one or more base layers of ink onto the build plate, (b) print one or more layers of test patterns onto the base layers until an alignment determination can be made, wherein the test patterns comprise different timing values, and (c) receive information and update a scan axis timing parameter based on the determination. 在本公开的一方面，三维打印系统包括用于支撑打印床（4）的升降机机构（6）、打印头组件（2）、移动机构（10）和控制器（16）。打印头组件包括打印头（8）和沿扫描轴线布置的平面器（24）。移动机构用于跨打印床扫描打印头。控制器被配置成：（a）将一个或多个油墨基础层打印到打印床上，（b）将一个或多个测试图案层打印到基础层上，直到可以进行对准确定，其中测试图案包括不同的定时值，以及（c）基于确定来接收信息和更新扫描轴线定时参数。