Inclined Two-Dimensional Sensor for Medium Transport Detection
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Solution Overview
Problem
Existing medium transporting devices face issues in accurately distinguishing between transport abnormalities and image analysis failures due to zero output values from two-dimensional semiconductor sensors, leading to potential erroneous determination of transport issues during medium movement.
Innovation Solution
A medium transporting device equipped with a two-dimensional sensor disposed at an inclination of 40° to 50° relative to the transporting direction, allowing both axes to detect movement without zero output values during normal transport, enabling differentiation between transport abnormalities and sensor failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a two-dimensional sensor is used to detect medium transport, then transport monitoring capability is improved, but false detection of transport abnormalities occurs when the sensor outputs zero values due to image analysis failure
Solution Approach 1:
The patent changes the orientation parameter of the two-dimensional sensor by setting its detection axes at inclination angles (40° to 50°) relative to the transport direction. This parameter change ensures that both detection axes capture movement components during normal transport, preventing zero output values and enabling reliable distinction between actual transport abnormalities and sensor analysis failures.
2Ease of operation
If the sensor axes are aligned with the transport direction, then detection simplicity is improved, but the ability to distinguish transport abnormalities from sensor failures deteriorates
Solution Approach 1:
The patent introduces asymmetry in the sensor configuration by setting the detection axes at inclination angles rather than aligning them parallel to the transport direction. This asymmetric arrangement ensures that both axes detect movement components during normal transport, creating a detection pattern that can distinguish between normal operation and actual abnormalities while maintaining reasonable detection simplicity.
3Ease of manufacture
If the sensor is mounted with axes parallel to transport direction, then manufacturing ease is improved, but operational reliability deteriorates due to zero output values
Solution Approach 1:
The patent modifies the mounting parameter of the sensor by setting its detection axes at inclination angles (40° to 50°) relative to the transport direction. This parameter change prevents zero output values during normal operation, thereby improving operational reliability while the inclination angle range is set to balance manufacturing feasibility with detection performance.
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 solution allows for accurate discrimination between transport abnormalities and sensor failures, preventing unnecessary stoppages and minimizing medium damage by ensuring that neither detection value becomes zero during normal transport, thus enhancing operational reliability.
Implementation Method 1
The two-dimensional semiconductor image sensor receives reflected light from a paper and an image is acquired
Data Source
AI summary
The medium transporting device is arranged so as to face the feeder for feeding the medium in the transporting direction and the surface of the medium transported in the transporting direction, and detects the motion of the medium in the two-dimensional coordinate system including the first axis and the second axis. The two-dimensional sensor is provided in a state in which the first axis and the second axis are inclined with respect to the transporting direction.