Patent ID: 8218329

Claim:
A high speed electrostatic marking system comprising: conventional xerographic stations, at least one sensor and at least one system controller, said system controller comprising a printed circuit board PCBA, said circuit board comprising a PCB substrate having an upper surface and a lower surface, at least a first component or package positioned on said upper surface, and at least a second component or package positioned on said lower surface, said first component or package having a ball grid array (BGA) positioned on its bottom surface, and said second component or package having a ball grid array (BGA) positioned on its top surface, a connector or signal trace electrically connecting said first and second components, wherein the first component is a VCSEL Driver ASIC and the second component is a VCSEL laser emitter, the VCSEL laser emitter receiving a driving signal from the VCSEL driver ASIC and emits light.