Printer Discharge Tray Load Management via Dual Detectors
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Solution Overview
Problem
Existing printing devices face challenges in managing the load capacity of the discharge tray when an optional paper discharge unit is not mounted, leading to variations in maximum load capacity and potential overloading or curling issues during printing.
Innovation Solution
Incorporating a first detector to detect a first load capacity and a second detector to detect a second load capacity, both positioned below an optional device mounted above the discharge tray, with a controller executing full load processing based on detection results to manage load capacity and prevent overloading, and positioning a moving portion to correct curling by supporting the medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an optional paper discharge unit is mounted above the discharge tray, then the printing device can handle additional paper discharge functions, but the maximum load capacity of the discharge tray becomes variable and difficult to manage when the optional device is not mounted
Solution Approach 1:
The system dynamically adjusts the detected load capacity based on whether the optional device is mounted. The controller switches between a first load capacity (when optional device is not mounted) and a second load capacity (when optional device is mounted), allowing the discharge tray management to adapt to different configurations and maintain reliability in both scenarios
Solution Approach 2:
The system uses detectors to monitor the presence of the optional device and provides feedback to the controller. Based on this feedback, the controller automatically adjusts the recognized load capacity of the discharge tray, ensuring appropriate paper discharge control and preventing overloading regardless of the optional device configuration
2Productivity
If the discharge tray load capacity is increased to accommodate more paper, then the printing efficiency improves, but the risk of paper curling and overloading increases
Solution Approach 1:
The detector provides real-time feedback on the paper stack height or weight in the discharge tray. The controller uses this feedback to determine when the paper capacity reaches the first or second load capacity threshold, automatically executing full load processing to prevent overloading and paper curling while maximizing the usable paper capacity for improved productivity
Solution Approach 2:
The system automatically monitors and manages the discharge tray load capacity without requiring manual intervention. The controller executes full load processing based on detector signals, self-regulating the paper discharge process to prevent harmful effects while maintaining high printing efficiency
Data Source
AI summary
A printing device includes a recording portion performing recording on a medium; a discharge tray loading the medium recorded; a first detector configured to detect the medium of a first load capacity loaded on the discharge tray; a second detector configured to detect the medium of a second load capacity smaller than the first load capacity loaded on the discharge tray; a mounting portion on which an optional device is mounted; and a controller controlling the recording by the recording portion, in which the optional device mounted on the mounting portion is positioned above the discharge tray, the first detector and the second detector are positioned below the optional device mounted on the mounting portion, and when the first detector detects the medium of the first load capacity in a non-mounted case in which the optional device is not mounted, the controller executes full load processing.