Color Gauge Head Positioning via Virtual Image Selection
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Solution Overview
Problem
Existing methods for quality monitoring in printing presses do not allow users to selectively choose individual measurement points on a printed sheet for color measurement, limiting operator flexibility and precision.
Innovation Solution
A motor-driven color measuring device with a positioning system controlled by a computer and display device, enabling users to select and precisely position measuring points on a virtual representation of the printing material for accurate color measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the entire printed image is scanned by a digital camera or spectral measuring head, then complete color information is obtained, but the operator cannot selectively measure individual points and the process requires manual coordinate input
Solution Approach 1:
The patent creates a digital copy (bitmap image) of the printed sheet displayed on a screen, allowing operators to visually select measurement points on the copy rather than manually inputting coordinates. The selection position on the screen copy is then mapped to the corresponding physical location on the actual printed sheet, enabling intuitive point selection while maintaining measurement precision.
Solution Approach 2:
The patent introduces a screen display showing a bitmap image as an intermediary between the operator and the physical printed sheet. This intermediary allows the operator to select measurement points visually on the screen, which are then translated to precise coordinates for the measuring head, combining ease of visual selection with measurement accuracy.
2Adaptability or versatility
If measurement positions are predefined in prepress data, then automated color control is achieved, but operators cannot adaptively select individual measurement points based on specific quality concerns
Solution Approach 1:
The patent makes the measurement system multi-functional by allowing it to operate in two modes: using predefined measurement positions from prepress data for automated control, and allowing adaptive visual selection of measurement points when operators need to investigate specific quality issues. This universality provides flexibility without requiring separate systems.
Solution Approach 2:
The patent makes the measurement system dynamic by allowing operators to switch between predefined measurement positions and visual selection mode depending on the situation. The system adapts its behavior based on operational needs, providing both automated efficiency and manual flexibility as required.
3Productivity
If manual coordinate input is used for positioning the measuring head, then measurement precision can be controlled, but the operation becomes time-consuming and error-prone
Solution Approach 1:
The patent replaces the manual mechanical process of coordinate input and verification with an automated visual selection system. Operators simply click on the desired location on the screen display, and the system automatically calculates and executes the positioning, eliminating manual errors and speeding up the process while maintaining precision.
Solution Approach 2:
The system performs self-service by automatically calculating the coordinates corresponding to the operator's visual selection on the screen and translating them to the measuring head positioning system. This eliminates the need for manual coordinate calculation and verification, improving both speed and accuracy.
Data Source
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AI summary
The device has a measuring bar (1) provided for a measuring head (8) e.g. color measuring head. A computer (4) e.g. commercial personal computer and laptop, controls the bar and is connected with a display (5) e.g. touch screen. Measuring points are selectable on the display using input devices e.g. computer mouse (11) and keyboard (6). The measuring head is positioned by the bar based on the selected measuring points. Digitized data of an image in the computer are transmitted to a print substrate (3). A digital image is represented on the substrate.