Liquid Ejection Control for Peak Power During Read-Print Overlap
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Solution Overview
Problem
Existing liquid ejection apparatuses face challenges in reducing power consumption without impairing operational feeling by concurrently performing reading and printing operations, as sequential operation increases time and risks power shortages.
Innovation Solution
A control method that restricts the operation of one unit (reading or printing) during high-power operations to allocate power efficiently, ensuring parallel operation can resume once high-power tasks are completed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the reading operation and the printing operation are performed sequentially, then the power consumption is suppressed, but the operational time increases and user experience is impaired
Solution Approach 1:
The patent implements dynamic power management by enabling the reading unit to operate in a power-saving mode during high-power printing operations. The control unit dynamically adjusts the operational state of the reading unit based on the power consumption level of the printing unit, allowing it to suspend non-critical reading operations during peak power demand periods and resume them when power availability increases.
2Loss of time
If the reading operation and the printing operation are performed concurrently, then the operational time is reduced, but the peak power consumption increases and may cause power shortage
Solution Approach 1:
The patent applies partial action by allowing the reading unit to perform only essential reading operations during printing operations, while suspending non-essential functions. The control unit selectively manages which reading tasks continue and which are deferred, ensuring that critical reading operations maintain progress while non-critical operations are paused to prevent power shortage.
3Productivity
If the reading unit operates during high-power printing operation, then the productivity is improved, but the power source capacity requirement increases
Solution Approach 1:
The patent changes the operational parameters of the reading unit during printing operations. The control unit adjusts the reading unit's power consumption parameters by switching to a low-power mode or suspending operations during high-power printing tasks. This parameter adjustment allows the system to maintain productivity through selective operation while keeping the power source capacity requirement within acceptable limits.
Data Source
AI summary
Provided are a liquid ejection apparatus and a control method of the liquid ejection apparatus that can suppress a power consumption without impairing operational feeling. To this end, a tilt correction operation performed by abutting a printing medium onto a conveyance roller in a printing unit and an operation by a reading unit are exclusively controlled.