The primary goal of this study was to improve productivity in the assembly line at Top Mind Co. Pvt. Ltd. (name changed) by implementing lean principles of the Toyota Production System (TPS). A detailed time and motion study was conducted to identify bottlenecks and non-value-added activities. Various lean tools and techniques were employed to reduce cycle time and enhance overall efficiency. The introduction of a semi-automatic thermal inkjet printer significantly contributed to reducing the cycle time and operational costs. This paper discusses the methodology, results, and recommendations for continuous improvement in the assembly line