Roll Printing Apparatus with Multiple Printing Rolls for Continuous Operation
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Solution Overview
Problem
Roll printing processes face limitations in productivity due to the necessity of a tack time, which is the time required to prepare and reload the printing roll after each printing process, resulting in relatively low production speeds compared to photolithography equipment.
Innovation Solution
A roll printing apparatus and method where the printing roll is fixed to a support for rotational motion, with a blanket coated with ink, and a cliche conveyed by the rotational motion of the printing roll, allowing continuous printing and synchronization of the cliche movement speed with the printing roll, thereby reducing tack time and enhancing productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional roll printing process is used with printing roll preparation and reloading, then pattern transfer is achieved, but productivity is reduced due to required tack time
Solution Approach 1:
The invention prepares multiple printing rolls in advance and positions them in ready-to-use positions. When one printing roll completes its printing task, another pre-prepared roll is already in position to immediately take over, eliminating the downtime traditionally required for roll preparation and reloading. This preliminary preparation of multiple rolls resolves the contradiction by ensuring continuous operation without productivity loss.
Solution Approach 2:
The invention implements a system where multiple printing rolls operate in sequence or parallel, ensuring that while one roll is printing, another is preparing or being positioned. This continuous operation eliminates idle tack time between printing cycles, maintaining uninterrupted useful action and significantly improving productivity compared to single-roll systems that require stopping for roll changes.
2Adaptability or versatility
If printing roll is frequently prepared and reloaded, then pattern variety can be achieved, but production speed decreases
Solution Approach 1:
The invention divides the printing system into multiple independent printing roll units, each capable of holding different patterns. This segmentation allows different patterns to be pre-loaded on different rolls, enabling quick pattern switching by simply changing which roll is active, rather than reconfiguring a single roll. This maintains pattern variety while enabling faster transitions that preserve production speed.
Solution Approach 2:
The invention creates a universal printing system where multiple printing rolls serve different functions (different patterns) within a single printing apparatus. Each roll is specialized for a particular pattern, but collectively they provide universal pattern coverage. This multi-functionality approach allows the system to handle various patterns without sacrificing production speed, as each roll is optimized for its specific pattern type.
Data Source
AI summary
The present application relates to a roll printing apparatus and a roll printing method using the same, and the roll printing apparatus according to the present application comprises a printing roll support, a printing roll, a blanket which is provided on an outer surface of the printing roll, a coater which coats a surface of the blanket with ink, a cliche, and a printing object, in which the printing roll is provided to be fixed to the printing roll support so as to perform rotational motion, and the cliche is conveyed by the rotational motion of the printing roll.