Liquid Ejecting Apparatus Vibration Inspection Method
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Solution Overview
Problem
Existing liquid ejecting apparatuses, such as ink jet printers, face challenges in accurately inspecting the state of liquid ejection due to variations in environmental conditions like temperature and humidity, which can lead to abnormal ejection issues affecting image quality.
Innovation Solution
A liquid ejecting apparatus that acquires and compares vibration information from ejecting portions during a first detection period when forming a printed image and a second detection period after the image is completed, allowing for inspection of the ejection state based on these data points to account for environmental changes and maintain image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If vibration information is acquired during a single detection period to inspect ejection state, then inspection can be performed, but measurement precision deteriorates due to environmental variations such as temperature and humidity
Solution Approach 1:
The system performs a test printing process before the actual printing process to acquire reference vibration information under the same environmental conditions. This preliminary action allows the inspection unit to compare actual vibration information against reference data, thereby compensating for environmental variations and maintaining measurement precision without requiring separate calibration procedures.
2Productivity
If vibration information is acquired during printing to inspect ejection state, then real-time inspection is achieved, but manufacturing precision deteriorates due to inability to account for environmental changes
Solution Approach 1:
The system implements a feedback mechanism where vibration information acquired during the actual printing process is compared against reference vibration information obtained during the test printing process. The inspection unit uses this comparison to determine the ejection state, providing real-time feedback that maintains image quality consistency despite environmental changes. This allows continuous monitoring without sacrificing precision.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables accurate inspection of ejection states even under varying environmental conditions, ensuring consistent image quality by comparing vibration information from different periods, thereby preventing abnormal ejection issues during real-time printing.
Implementation Method 1
acquires first vibration information on an inspection target ejecting portion out of the plurality of ejecting portions concerning a vibration generated in a first detection period
Data Source
AI summary
A liquid ejecting apparatus includes: an acquisition unit that acquires first vibration information on an inspection target ejecting portion out of the ejecting portions concerning a vibration generated in a first detection period included in a first period in which the liquid ejecting apparatus forms a first printed image on the medium, and acquires second vibration information on the inspection target ejecting portion concerning a vibration generated in a second detection period corresponding to the first detection period, the second detection period being included in a second period that starts after completion of the first period, in which the liquid ejecting apparatus forms a second printed image related to the first printed image on the medium. The liquid ejecting apparatus also includes an inspection unit that inspects a ejection state of the liquid from the inspection target ejecting portion based on the first vibration information and the second vibration information.