Printer Status Indicator Visibility via Top-Mounted Light Guide
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Solution Overview
Problem
Image forming apparatus status indicators, typically using luminous bodies like LEDs, are not easily visible from directions other than the specific intended view angle, limiting user recognition of status information.
Innovation Solution
The apparatus incorporates a light diffusing portion and a light guide path within a protruding housing to diffuse and direct light emitted by a light source, ensuring status information is visible from any direction, with a control unit managing the illumination based on image formation status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the luminous indicator is positioned on the front of the apparatus, then it is clearly visible from the front direction, but it cannot be clearly viewed from the side or back directions
Solution Approach 1:
The patent applies dimensionality change by moving the indicator from a front-facing position to a top surface position on the protruding housing. This spatial repositioning in the vertical dimension allows users to view the indicator from above regardless of the apparatus orientation, resolving the directional visibility limitation while maintaining clear indication.
Solution Approach 2:
The patent introduces a light guide as an intermediary component between the light source and the external environment. The light guide transports light from the internal light source to the top surface of the protruding housing, enabling the indicator to be visible from above while the light source remains protected inside the apparatus.
2Device complexity
If the indicator is designed for a specific viewing direction, then the structure can be simple, but the user may not recognize status information when approaching from other directions
Solution Approach 1:
By positioning the indicator on the top surface rather than the front surface, the patent changes the viewing dimension from horizontal to vertical. This allows the indicator to be viewed from above without requiring complex multi-directional structures, while ensuring status information is always accessible to users approaching from any direction.
Solution Approach 2:
The top surface position of the protruding housing serves multiple functions: it provides a visible indicator location, maintains a compact apparatus structure, and ensures accessibility from various user approaches. This universal positioning resolves the conflict between structural simplicity and information accessibility.
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 configuration enhances the visibility of status information from various angles, allowing users to reliably recognize the operating status of the image forming apparatus without specific directional viewing.
Implementation Method 1
The light guide path is configured to guide light emitted by the light source to the light diffusing portion
Implementation Method 2
The light diffusing portion is located in or near the top portion of the protruding housing... configured to diffuse and direct light
Data Source
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AI summary
An image forming apparatus includes an image forming section, a body housing, a protruding housing, a light diffusing portion, a light source, a light guide path, and a control unit. The image forming section performs image formation on a sheet. The body housing is formed by a box body with a top surface, and contains the image forming section. The protruding housing is located on the top surface, and has a top portion protruding upwardly above the top surface. The light diffusing portion is located in or near the top portion of the protruding housing. The light source is located inside the body housing or the protruding housing, and emits light. The light guide path guides light emitted by the light source to the light diffusing portion. The control unit controls illumination of the light source based on the information related to the image formation.