Printer Sheet Size Selection Using Sensor Feedback
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Solution Overview
Problem
Existing printing control systems fail to accurately specify the appropriate sheet size for printing, often defaulting to the highest priority size regardless of user settings, leading to improper printing when lower priority sheets are set.
Innovation Solution
A printing control apparatus and method that uses a sheet sensor to detect the width of the printing sheet and refers to a sheet size table to determine the appropriate size based on detected dimensions and destination information, allowing for accurate selection of sheet sizes even when multiple sizes are candidates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a predetermined priority order is used to specify sheet size from multiple candidates, then the sheet size selection process is simplified and automated, but the accuracy of sheet size specification deteriorates because the highest priority size is always selected regardless of user settings
Solution Approach 1:
The sheet size selection mechanism is made dynamic by changing from a static priority-based selection to an adaptive selection process. The system dynamically adjusts the selection criteria based on detected sheet width, candidate sheet sizes, and user settings, allowing the selection process to respond to different conditions rather than following a fixed priority order.
Solution Approach 2:
The system implements feedback by detecting the actual sheet width using a sensor, comparing it with stored sheet size information, and using this feedback to determine the appropriate sheet size. The detection result feeds back into the selection process, ensuring that the specified sheet size matches the actually set sheet rather than defaulting to the highest priority size.
2Productivity
If the highest priority sheet size is always selected from multiple candidates, then the selection process is straightforward and fast, but improper printing occurs when the user sets a lower priority sheet size
Solution Approach 1:
The system performs self-service by automatically detecting the sheet width and determining the appropriate sheet size without requiring manual user input for each printing task. The sensor-based detection and automated comparison with stored sheet size information enable the system to self-determine the correct sheet size, maintaining both speed and reliability.
Solution Approach 2:
The manual sheet size selection process is replaced with an automated sensing and determination system. Instead of relying on mechanical priority-based selection, the system uses optical or electronic sensing to detect sheet width and substitutes the selection mechanism with a comparison process against stored sheet size data, eliminating the need for manual intervention while ensuring accuracy.
3Adaptability or versatility
If multiple sheet size candidates are specified based on detected width and length, then the system can accommodate various sheet formats, but the ability to uniquely specify the correct sheet size deteriorates without additional selection criteria
Solution Approach 1:
The sheet size determination process is segmented into multiple stages: first detecting sheet width and length, then generating multiple candidate sheet sizes based on these dimensions, and finally selecting the appropriate candidate using additional criteria such as destination information and use frequency. This segmentation allows the system to handle various sheet formats while progressively narrowing down to the correct size.
Solution Approach 2:
The system transitions from two-dimensional sheet width and length detection to three-dimensional selection by incorporating a third dimension of selection criteria based on destination information and use frequency. This additional dimension resolves the ambiguity among multiple candidates by providing another layer of differentiation beyond just physical dimensions.
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
Ensures that images are printed on the appropriate size medium by narrowing down sheet size candidates based on sheet type, destination, and use frequency, preventing improper printing due to defaulting to higher priority sizes.
Implementation Method 1
a sheet sensor 118. The printing apparatus 100 acquires an output level (output voltage) that indicates the intensity of light received by the sheet sensor 118 and determines whether that output level corresponds to an output level of the light reflected from the printing sheet 104
Data Source
AI summary
There is provided a printing control apparatus configured to cause a printing unit to print an image on a printing medium. In the printing control apparatus, the printed image has a size determined based on a candidate, which is acquired by a sensor detecting the size of the printing medium and is one of the candidates for a size of the printing medium, corresponding to a combination of a plurality of conditions for specifying the size of the printing medium.