Ink Jet Print Head Maintenance via Segmented Modules
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Solution Overview
Problem
Ink jet printing systems face a reduction in printing throughput due to the time-consuming maintenance operations required for print head maintenance, which interrupts the printing process and reduces efficiency.
Innovation Solution
The method involves moving receivers along a printing pass and using multiple ink jet print heads to eject ink drops while one print head undergoes maintenance, allowing for dynamic maintenance scheduling and seamless data routing to ensure continuous printing without interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If print head maintenance operations are performed, then print head reliability is improved, but printing throughput is reduced
Solution Approach 1:
The printing system is divided into multiple independent print head modules, each capable of operating autonomously. This segmentation allows one print head to undergo maintenance while others continue printing, resolving the contradiction between maintenance needs and throughput by distributing the printing function across multiple segments.
Solution Approach 2:
The system maintains continuous printing operation by switching to alternative print heads when one requires maintenance. The controller seamlessly redirects data streams to available print heads, ensuring the useful action of printing continues without interruption despite maintenance operations on individual components.
2Productivity
If multiple print heads are used to maintain throughput during maintenance, then printing throughput is improved, but device complexity is increased
Solution Approach 1:
Multiple print heads are designed with universal functionality, where each head can perform the same printing task. This multi-functionality allows any operational print head to take over another's workload during maintenance, achieving throughput preservation without requiring specialized or complex interdependent systems.
Solution Approach 2:
A controller acts as an intermediary between data sources and multiple print heads, managing data routing and coordination. This intermediary simplifies the complexity by providing a centralized management layer that handles the switching and coordination logic, rather than requiring complex direct connections between all system components.
Data Source
AI summary
A method for ink jet printing includes moving one or more receivers along a printing pass, ejecting ink drops from a first ink jet print head on a first receiver region of the one or more receivers in the printing pass, ejecting ink drops from a second ink jet print head on a second receiver region of the one or more receivers in the printing pass, and providing maintenance to the first ink jet print head while the second ink jet print head ejects ink drops on the first receiver region or the second receiver region.