Printing Apparatus Maintenance Control via Carriage Movement Interruption
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Solution Overview
Problem
Existing printing apparatuses struggle to properly execute maintenance processing when operations are stopped during multiple-phase maintenance, as they lack effective control mechanisms to manage the movement of the carriage and maintenance operations.
Innovation Solution
A printing apparatus with a maintenance unit and control unit that can interrupt and resume maintenance processing by moving the printing unit, utilizing a cap to cap the nozzle surface and a cover member that regulates operations based on position changes, ensuring proper maintenance even when operations are stopped.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If maintenance processing includes multiple phases with carriage movement, then maintenance effectiveness is improved, but control complexity increases when operations are stopped
Solution Approach 1:
The maintenance processing is divided into multiple phases (first maintenance phase, second maintenance phase, etc.), each with specific maintenance operations. The control unit manages each phase separately, allowing precise control of carriage movement and maintenance operations within each phase, which reduces overall control complexity while maintaining comprehensive maintenance effectiveness.
Solution Approach 2:
The control unit monitors the execution status of maintenance operations and carriage position in real-time. When an operation is stopped or the carriage position changes, the control unit receives feedback and automatically adjusts the maintenance processing flow, ensuring proper execution without requiring complex manual intervention.
2Adaptability or versatility
If the carriage moves to change maintenance operations, then maintenance adaptability is improved, but operation stability deteriorates during stopped operations
Solution Approach 1:
The system dynamically adjusts maintenance operations based on carriage position. When the carriage moves to different positions, the control unit automatically selects and executes appropriate maintenance operations from multiple phases. This dynamic adaptation allows the system to maintain stability by having predetermined operation sequences for each carriage position, rather than requiring complex real-time decision-making.
3Ease of operation
If maintenance operations are interrupted during carriage movement, then operational flexibility is improved, but maintenance quality deteriorates
Solution Approach 1:
The control unit is pre-programmed with the complete sequence of maintenance operations for each maintenance phase and carriage position. When an operation is interrupted, the control unit automatically resumes from the correct position in the predetermined sequence, ensuring maintenance quality is not compromised by the interruption. This preliminary preparation of operation sequences allows flexible operation while maintaining quality.
Data Source
AI summary
There is provided a technique in which even in a case where an operation is stopped during maintenance processing including a plurality of phases, the maintenance processing can be executed properly. A maintenance unit executes maintenance processing including a plurality of maintenance operations for well maintaining and recovering liquid ejection from a printing unit configured to print a print medium, and in a case where the maintenance processing is executed, a control unit capable of controlling the maintenance processing executes first control to interrupt the maintenance processing in a case where the maintenance operations are changed by moving the printing unit.