External Ink Case Wiring Segmentation for Noise Reduction
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Solution Overview
Problem
In ink jet printers, the external ink supplying device configuration requires detachment from the printer housing for maintenance, which is labor-intensive due to the need to disconnect and manage cables, and excessive cable length can introduce noise interference.
Innovation Solution
The electric wiring between the controller and electronic components includes connection portions that allow for easy disconnection and aggregation of cables, reducing noise interference by using relay substrates and connectors to manage signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the cable is wired without extra length, then noise interference is minimized, but the ink accommodating portion cannot be easily detached during maintenance
Solution Approach 1:
The cable is divided into two separate cables: one connecting the ink accommodating portion to the housing, and another connecting the housing to the controller. This segmentation allows the ink accommodating portion to be easily detached during maintenance while keeping the cable length within the housing short to minimize noise interference.
Solution Approach 2:
The housing serves as an intermediary component that receives the cable from the ink accommodating portion and separately connects to the controller. This intermediary structure enables easy detachment of the ink accommodating portion while maintaining short cable routing within the housing to reduce noise.
2Ease of operation
If the cable has extra length to avoid maintenance deterioration, then the ink accommodating portion can be easily detached, but noise interference increases
Solution Approach 1:
The cable system is segmented into distinct portions: a cable from the ink accommodating portion to the housing, and another cable from the housing to the controller. This allows the first cable to have sufficient length for easy maintenance while the second cable remains short within the housing to minimize noise interference.
3Ease of operation
If the cable is detached from the controller before detaching the ink accommodating portion, then the ink accommodating portion can be removed, but maintenance work takes more time and labor
Solution Approach 1:
The cable connection is segmented so that the ink accommodating portion connects to the housing via a cable, while the controller connects to the housing via a separate cable. This allows the ink accommodating portion to be detached directly from the housing without requiring disconnection from the controller, significantly reducing maintenance time and labor.
Solution Approach 2:
The housing acts as an intermediary that provides a direct connection point for the ink accommodating portion's cable, independent of the controller connection. This intermediary structure enables direct detachment of the ink accommodating portion without involving the controller, streamlining the maintenance process.
Data Source
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AI summary
In a configuration in which an ink accommodating portion is provided on the outside of an apparatus main body, both improvement of maintenance and suppressing of performance deterioration of the apparatus are achieved. A recording apparatus includes a recording head that is capable of discharging liquid onto a medium, a controller that controls the recording head, a housing that covers a structure including the recording head and the controller, a case that stores a liquid accommodating member accommodating the liquid and an electronic component holding information of the liquid accommodating member, and is attached to the outside of the housing, a tube that guides the liquid from the liquid accommodating member to the inside of the housing, and an electric wiring that electrically connects the controller and the electronic component, in which the electric wiring includes a connection portion which connects cables, a cable on the controller side which constitutes a wiring of the controller side with respect to the connection portion, and a cable on the electronic component side which constitutes a wiring of the electronic component side with respect to the connection portion, and at least one of the cable on the controller side and the cable on the electronic component side is able to be connected to and disconnected from the connection portion.