Optical Sensor for Automatic Paper Brand Identification
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Solution Overview
Problem
Current image forming apparatuses face difficulties in accurately identifying the type of recording medium, leading to suboptimal image formation due to the need for manual setting adjustments based on paper brand, which can result in errors and irregularities in image quality.
Innovation Solution
An image forming apparatus equipped with a sensor device that includes an optical system with a surface emitting laser array, photosensors, and a processing unit to identify the brand of recording paper by analyzing reflection light patterns, allowing for automatic adjustment of developing and transfer conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual setting adjustments are made for each paper brand, then image formation quality can be optimized, but operation complexity increases and errors may occur
Solution Approach 1:
The image forming apparatus automatically identifies the recording paper type and adjusts development and transfer conditions without user intervention. The sensor device detects paper characteristics and the control unit autonomously selects optimal settings, eliminating manual operation while maintaining high image quality.
Solution Approach 2:
The system uses a sensor device to detect recording paper characteristics and provides feedback to the control unit, which then adjusts development and transfer conditions accordingly. This closed-loop feedback mechanism ensures optimal image formation quality adapted to each paper type.
2Manufacturing precision
If detailed fixation conditions are set for every paper brand, then image quality is improved, but device complexity increases
Solution Approach 1:
The apparatus autonomously identifies recording paper type through sensor detection and automatically configures optimal fixation conditions from stored settings. This eliminates the need for users to manually configure complex settings for each paper brand while maintaining high image quality.
Solution Approach 2:
The control unit stores multiple fixation condition sets for different paper brands and universally applies the appropriate set based on sensor identification. This multi-functionality allows the single device to handle diverse paper types with optimized settings without increasing operational complexity.
3Adaptability or versatility
If optical scanning is used to identify paper type, then identification capability is improved, but measurement precision is insufficient for accurate brand differentiation
Solution Approach 1:
The sensor device measures multiple parameters including reflection light intensity, polarization characteristics, and surface properties at different angles and wavelengths. By analyzing changes in these physical parameters, the system achieves precise brand identification beyond simple optical scanning.
Solution Approach 2:
The system performs localized measurements at multiple positions on the recording paper surface, analyzing variations in reflection characteristics, polarization states, and surface properties. This multi-point local quality assessment enables accurate brand differentiation that single-point scanning cannot achieve.
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
The solution enables precise identification of recording paper brands, eliminating the need for manual settings and ensuring high-quality image formation by optimizing developing and transfer conditions based on the paper type.
Implementation Method 1
an optical system 110 including a surface emitting laser array 111, photosensors 113 to 115, and a dark box 119
Data Source
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AI summary
A sensor device (100) and an image forming apparatus (2000) incorporating the sensor device (100) are provided. The sensor device (100) includes a light source (111), a photo-detection system (110) configured to receive light emitted from the light source (111) and reflected at a sheet-like object (M), a housing (150) accommodating the light source (111) and the photo-detection system (110), the housing (150) having a slit into which the object (M) is inserted, and a holding member (140, 170, 174, 176) configured to hold the object (M) such that relative positions of a surface of the object (M) inserted into the slit and the photo-detection system (110) are fixed. The image forming apparatus (2000) includes an image forming unit (2000) configured to form an image on a recording medium, the sensor device (100), and an adjustment unit (130, 2090) configured to adjust a condition for image formation, based on an output from the sensor device (100).