Exposure Relay Layout for Compact Image Forming Units
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Solution Overview
Problem
The inclusion of a relay unit in image forming apparatuses using an electrophotographic system complicates downsizing due to increased space requirements.
Innovation Solution
Incorporation of a semiconductor device-based relay unit with a power line for controlling exposure units, integrated with a cooling unit and efficient airflow path, allowing for compact arrangement of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a relay unit is included in the image forming apparatus, then control signal transmission is achieved, but the apparatus size increases and downsizing becomes difficult
Solution Approach 1:
The patent combines the relay unit with the power supply unit into a single integrated component. The relay unit includes a coil and contacts for control signal transmission, while the power supply unit provides electrical power. By merging these two functions into one compact assembly, the patent achieves effective control signal transmission without increasing the overall apparatus size, thereby resolving the contradiction between operational functionality and compact dimensions.
2Ease of operation
If a relay unit is included in the image forming apparatus, then control signal transmission is achieved, but device complexity increases
Solution Approach 1:
The patent merges the relay unit with the power supply unit into a single integrated component. The relay unit includes a coil and contacts for control signal transmission, while the power supply unit provides electrical power. By merging these two functions into one compact assembly, the patent achieves effective control signal transmission without increasing the overall apparatus size, thereby resolving the contradiction between operational functionality and compact dimensions.
Solution Approach 2:
The integrated unit serves multiple functions: the relay portion handles control signal transmission while the power supply portion provides electrical power to various components including the exposure device and semiconductor elements. This multi-functional design reduces the total number of separate components needed in the system, simplifying the overall device architecture while maintaining full operational capability.
Data Source
AI summary
An image forming apparatus includes a main body, a first photosensitive member which is arranged inside of the main body, and is configured to bear a first toner image, a first exposure unit which is arranged inside of the main body, and is configured to expose the first photosensitive member with light, a controller configured to transmit a first control signal for controlling the first exposure portion, and a relay unit configured to relay the first control signal transmitted from the controller, to transmit the first control signal to the first exposure portion, wherein the relay unit includes a semiconductor device, and wherein a power line is connected to the relay unit, the power line being configured to supply electric power to the semiconductor device.