Colorimetric Apparatus Position Adjustment via Detection Feedback
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Solution Overview
Problem
Existing colorimetric apparatuses face accuracy issues due to deviations in the positional relationship between the optical system and the prefetch sensor, leading to deteriorated color measurement accuracy, which can be mitigated by increasing patch size but results in higher consumption and longer measurement times.
Innovation Solution
A colorimetric apparatus with a support base, carriage, and control unit that detects a detection target portion, specifies positions, calculates an adjustment value, and adjusts the carriage position to optimize the color measurement position, allowing for accurate measurements without increasing patch size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the patch size is increased to suppress deviation of the color measurement position, then the color measurement accuracy is improved, but the consumption amount of medium increases and the color measurement time increases
Solution Approach 1:
The patent implements feedback by detecting the actual position of the patch using a detection unit, comparing it with the intended position, and then adjusting the carriage position based on the detected deviation. This closed-loop feedback mechanism eliminates the need for oversized patches while maintaining measurement accuracy.
Solution Approach 2:
The patent changes the parameter of carriage position dynamically based on detected positional deviations. By adjusting the carriage position according to actual patch location, the system maintains accurate color measurement without requiring fixed large patches.
2Measurement precision
If the patch size is increased to suppress deviation of the color measurement position, then the color measurement accuracy is improved, but the consumption amount of medium increases
Solution Approach 1:
The detection unit provides feedback on the actual patch position, enabling the control unit to adjust the carriage position accordingly. This feedback mechanism allows accurate measurement on smaller patches, reducing medium consumption.
Solution Approach 2:
The system performs self-adjustment by automatically detecting patch position and correcting carriage positioning without external intervention. This self-service capability enables precise measurement on minimal medium while maintaining accuracy.
3Device complexity
If the positional relationship between the optical system and the prefetch sensor is maintained without adjustment, then the device complexity is reduced, but the color measurement accuracy deteriorates
Solution Approach 1:
The patent introduces a feedback mechanism where the detection unit monitors patch position and the control unit adjusts carriage position based on detected deviations. This feedback loop maintains measurement accuracy without requiring complex mechanical precision in the initial setup.
Solution Approach 2:
The system performs preliminary detection of patch position before color measurement, allowing it to pre-adjust the carriage position. This preliminary action ensures accurate measurement while keeping the overall device relatively simple.
Data Source
AI summary
In a colorimetric apparatus including a support base configured to support a colorimetric object, a carriage including a detection unit configured to detect a detection target portion formed at the colorimetric object, the carriage supporting a colorimeter, and a movement unit configured to move the carriage, an adjustment value is calculated based on a detection position of the detection unit where the detection unit is caused to detect a detection target portion and a color measurement position of the colorimeter where the colorimeter is caused to measure a color of the detection target portion, and a position of the carriage at the time when a color of a patch is measured is adjusted based on the adjustment value.