Liquid Consumption Apparatus Cartridge Switching Control
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Solution Overview
Problem
Existing liquid consumption apparatuses, such as ink jet printers, face inefficiencies when trying to prevent the use of unsuitable cartridges, as they often interrupt printing processes to detect and correct unsuitable cartridges, leading to degraded print processing efficiency.
Innovation Solution
A liquid consumption apparatus with a control unit that determines the suitability of cartridges by reading container information and continues ink supply from a first cartridge to a liquid consumption unit until a suitable second cartridge is switched, while preventing the use of unsuitable cartridges and minimizing interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the apparatus strictly detects and interrupts printing for every unsuitable cartridge detection, then cartridge suitability is ensured, but print processing efficiency is significantly degraded
Solution Approach 1:
The control unit performs determination processing that determines whether each housing container is unsuitable in advance, during the period from mounting to removal, before switching decisions are made. This preliminary detection allows the system to prepare for potential interruptions without actually interrupting the printing process until necessary.
Solution Approach 2:
The control unit continues supply of liquid composition from the first housing container to the liquid consumption unit regardless of whether the second housing container is unsuitable, until switching decision is performed. This maintains continuous printing operation while evaluating cartridge suitability in the background.
2Productivity
If the apparatus automatically switches to a second cartridge when the first cartridge's ink remaining amount becomes small, then continuous printing is enabled, but unsuitable cartridges may be used inadvertently
Solution Approach 1:
The control unit performs determination processing to detect whether the second housing container is unsuitable before allowing automatic switching to occur. This feedback mechanism prevents unsuitable cartridges from being used while still enabling automatic switching for suitable cartridges, resolving the contradiction between continuous printing and cartridge suitability.
Data Source
AI summary
A control unit of a liquid consumption apparatus performs determination processing that determines whether or not each of a first housing container and a second housing container is an unsuitable container that does not satisfy a use condition, performs switching decision that decides switching of a supply source that supplies a liquid composition to a liquid consumption unit to the second housing container when the first housing container is determined to be the unsuitable container while the liquid composition is being supplied from the first housing container to the liquid consumption unit, and continues supply of the liquid composition from the first housing container to the liquid consumption unit regardless of whether or not the second housing container is the unsuitable container until when the switching decision is performed while the liquid composition is being supplied from the first housing container to the liquid consumption unit.