Inkjet Recording Device Roller Ink Transfer Detection
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Solution Overview
Problem
Inkjet printers face issues with ink sticking to rollers, leading to reduced recording quality and potential indentation on media due to toothed spurs, which affects the recording process.
Innovation Solution
A recording device with a control unit that forms a specific pattern on the medium, including a detection region where the roller contacts after one rotation, allowing for detection of ink transfer and adjustment of ink ejection amounts to prevent staining and maintain quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a roller is used to transport the medium downstream, then the medium can be transported efficiently, but ink sticks to the roller and transfers to the medium causing stains
Solution Approach 1:
The patent applies preliminary action by forming a detection region before the harmful effect occurs. The control unit creates a detection region at a specific position on the medium where ink transfer can be detected, allowing the system to identify and prevent staining issues before they affect the entire recording process.
Solution Approach 2:
The patent implements feedback by establishing a detection region that allows monitoring of ink transfer conditions. The control unit uses information from the detection region to adjust recording parameters, creating a closed-loop system that prevents ink staining based on real-time detection of transfer conditions.
2Object-affected harmful factors
If a toothed transport spur is used to reduce contact area, then ink transfer is suppressed, but indentation is generated on the medium affecting recording quality
Solution Approach 1:
The patent uses an intermediary approach by introducing a detection region as a mediator between the transport spur and the recording process. This detection region allows the system to monitor conditions without directly interacting with the medium in a way that causes indentation, separating the transport function from the recording function.
Solution Approach 2:
The patent replaces the mechanical solution (toothed spur) with a detection-based approach. Instead of physically reducing contact area through mechanical means, the system uses a detection region to identify conditions and adjusts recording parameters accordingly, substituting mechanical modification with information-based control.
3Manufacturing precision
If ink ejection amount is increased to improve recording quality, then recording clarity improves, but ink sticking to roller increases causing more stains
Solution Approach 1:
The patent applies feedback by using the detection region to monitor ink transfer conditions resulting from increased ejection amounts. The control unit adjusts recording parameters based on detection results, allowing the system to optimize ejection amounts while preventing excessive ink sticking to the roller.
Solution Approach 2:
The patent implements parameter changes by adjusting recording parameters based on detection region information. When ink ejection amounts are increased to improve clarity, the system uses feedback from the detection region to modify other parameters (such as transport speed or roller surface conditions) to compensate for increased sticking potential.
Data Source
AI summary
A recording device including: a liquid ejecting unit configured to eject liquid to a first surface of a medium transported in a transport direction, a roller disposed downstream of the liquid ejecting unit in the transport direction and configured to rotate in contact with the first surface, and a control unit, wherein the control unit is configured to form a first pattern of the liquid on the first surface by controlling ejection of the liquid by the liquid ejecting unit, and to form a detection region for the first pattern at a specific position on the first surface at which the roller is brought into contact with the first surface when a rotational angle of the roller becomes m °+360°, m ° being a rotational angle of the roller when the roller is brought into contact with the first pattern.