Recording Device With Line-Head Cable-Movement Protection
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Solution Overview
Problem
Existing recording devices face challenges in reducing costs due to the inclusion of a relay unit, which increases part costs, and also suffer from cable damage due to contact with through-hole edges during the movement of the recording head.
Innovation Solution
A recording device design that includes a frame with a hole larger in one direction than the cable's movement range, featuring regulating portions and a holding member to manage cable movement, reducing contact and damage while omitting the relay unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a relay unit is provided to couple the recording unit to the control unit, then electrical connection is ensured, but part cost increases
Solution Approach 1:
The patent removes the relay unit from the system entirely. Instead of using a relay unit to couple the recording unit to the control unit, the invention uses a cable that passes directly through a through-hole in the frame, eliminating the need for the relay unit and thereby reducing part cost while maintaining electrical connection.
Solution Approach 2:
The frame serves multiple functions: it provides structural support for the recording device and simultaneously acts as a cable management structure through its through-hole. The through-hole in the frame allows the cable to pass through directly, combining the support function and cable routing function into a single component, eliminating the need for a separate relay unit.
2Adaptability or versatility
If the recording head is made movable to enable cleaning operations, then functionality is improved, but cable damage risk increases due to contact with through-hole edges
Solution Approach 1:
The patent addresses the cable damage problem by providing the through-hole with a specific orientation and dimensions. The through-hole is configured with a length in the movement direction that is sufficient to allow the recording head to move between recording and retracted positions without the cable contacting the edges of the through-hole, thus preventing cable damage while maintaining the movable recording head functionality.
3Area of stationary object
If the through-hole diameter is reduced to minimize frame size, then device compactness is improved, but cable movement range is restricted leading to increased damage risk
Solution Approach 1:
The patent applies local quality by providing the through-hole with different dimensions in different directions. The through-hole has a specific length in the movement direction that is sufficient to prevent cable contact with edges, while having a controlled cross-sectional area that maintains frame compactness. This anisotropic design allows the hole to be small in the frame plane while being long enough in the movement direction to protect the cable.
Data Source
AI summary
A recording device includes: a line head movable to a recording position to perform recording on a medium and to a retracted position where the recording unit is retracted in a first direction from the recording position; a first control board; a cable configured to electrically couple the line head to the first control board; a side frame provided between the line head and the first control board; and a hole through which the cable passes, the hole being provided in the side frame, wherein a diameter of the hole in the first direction is longer than a distance between a position of a passing portion corresponding to the recording position and a position of the passing portion corresponding to the retracted position, the passing portion being a portion of the cable passing through the hole.