Printer Camera Capture Area Adjustment via Correction Values
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Solution Overview
Problem
Existing printers face challenges in accurately adjusting the camera attachment location for precise print adjustments, requiring complex mechanical mechanisms and manual fine-tuning, which increases cost and complexity, and results in reduced effective capture range and longer adjustment times.
Innovation Solution
A printer configuration that includes a carriage with a print head, a camera, a movement mechanism, and a transportation mechanism, where correction values for the camera's capture area are stored and used to adjust the movement and transportation amounts, allowing for precise location adjustments of the camera's capture area without the need for complex mechanical adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex adjustment mechanism is provided on the carriage to mechanically adjust the camera installation location, then the attachment accuracy of the camera can be improved, but the device complexity increases
Solution Approach 1:
The patent replaces the mechanical adjustment mechanism with a software-based correction approach. Correction values are stored in storage and applied to adjust the capture area location through coordinate transformation, eliminating the need for complex mechanical adjustment mechanisms on the carriage while achieving the same positioning accuracy.
Solution Approach 2:
The patent changes the parameters of the capture area by applying correction values to the coordinates. Instead of physically moving the camera, the system modifies the capture area parameters (position coordinates) to achieve accurate positioning, thereby avoiding mechanical complexity.
2Measurement precision
If manual adjustment of the camera installation location is performed, then some level of positioning can be achieved, but fine adjustment to an optimal location becomes difficult
Solution Approach 1:
Manual mechanical adjustment is replaced with automated software-based correction. The system automatically applies correction values to adjust the capture area location, making fine adjustment as easy as loading a correction file without manual manipulation of mechanical components.
Solution Approach 2:
The patent uses a digital copy (correction values) to represent the physical adjustment. Instead of manually moving the camera to precise positions, the system uses digital correction data to achieve the same effect, making fine adjustment trivial through data input rather than manual manipulation.
3Area of stationary object
If the camera attachment location is not accurately adjusted, then the device structure remains simple, but the effective capture range is reduced and print adjustment accuracy decreases
Solution Approach 1:
The system adjusts the capture area parameters using correction values, which transforms the coordinates to compensate for installation deviations. This parameter adjustment restores the effective capture range and ensures accurate print adjustment without requiring precise physical camera placement.
Data Source
AI summary
A printer includes: a carriage which moves with a print head mounted thereon, the print head being configured to eject ink; a camera attached to the carriage and configured to capture an image printed on a print medium by the print head; a movement mechanism configured to move the carriage along a main scan direction; a transportation mechanism configured to transport the print medium along a sub-scan direction; a processor configured to control printing of the image onto the print medium; and a storage configured to store a correction value of a movement amount of the movement mechanism as a first correction value for a location adjustment of a capture area of the camera and store a correction value of a transportation amount of the transportation mechanism as a second correction value for the location adjustment of the capture area.