Dynamic Paper Feeding Stage Selection for Continuous Printing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming apparatuses face interruptions in printing due to the lack of efficient paper feeding stage selection and changeover processes, leading to reduced productivity and convenience, especially when paper levels in one tray are depleted.
Innovation Solution
An image forming apparatus with multiple paper feeding stages, equipped with residual paper sheet quantity detection sensors and a system control unit that dynamically alters the priority levels for paper feeding stage selection based on detected quantities and printing requirements, ensuring seamless changeover to available stages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed priority system for paper feeding stages is used, then the system structure is simple, but printing interruptions occur when paper in the current stage is depleted
Solution Approach 1:
The patent implements dynamic priority adjustment for paper feeding stages based on real-time paper quantity detection. The system automatically switches between fixed priority (for simplicity) and dynamic priority (for reliability) based on detected paper levels, resolving the contradiction between system simplicity and continuous printing capability.
Solution Approach 2:
The system uses residual paper quantity detection sensors to continuously monitor paper levels in each feeding stage and feeds this information back to the control unit. This feedback mechanism enables automatic priority adjustment and seamless stage switching, ensuring continuous printing without manual intervention.
2Productivity
If manual paper feeding stage selection is used, then the control system is simple, but productivity decreases due to interruptions
Solution Approach 1:
The system performs self-service by automatically detecting paper quantities and selecting appropriate feeding stages without user intervention. The control unit autonomously manages paper supply based on sensor data, maintaining printing continuity while keeping the user informed through notifications.
Solution Approach 2:
The patent replaces manual mechanical selection with automated sensor-based detection and electronic control. Optical sensors detect paper quantities, and the control system automatically manages stage switching, substituting manual operations with automated systems to maintain productivity.
3Quantity of substance
If paper feeding stages are selected based on shortest distance only, then the transfer time is minimized, but paper quantity management becomes inefficient
Solution Approach 1:
The system changes the selection parameters from solely distance-based to a multi-parameter approach that includes paper quantity, distance, and printing requirements. This allows the system to optimize both paper utilization and transfer time by selecting stages based on comprehensive criteria rather than distance alone.
Solution Approach 2:
The system performs preliminary detection of paper quantities in all feeding stages and prepares priority lists in advance. By pre-calculating optimal stage selections based on detected paper levels and upcoming printing jobs, the system minimizes changeover time while maximizing paper utilization efficiency.
Data Source
AI summary
Provided is an image forming apparatus preventing lowering of continuous printing performance; including plural paper feeding stages in main body; a residual paper quantity detection sensor; a printer part printing on paper; a paper feeding stage searching part functioning every time paper feeding is made; a paper feeding stage selection part determining existence of paper feeding capable stage, on result by paper feeding stage searching part, and selecting a paper feeding stage; a system control part performing stage changeover according to selection result by paper feeding stage selection part; when there exists no paper feeding capable stage, paper feeding stage selection part notifying system control part of it, and when there exists paper feeding capable stage, paper feeding stage selection part altering priority levels in stage searching on detection result by residual paper quantity detection sensor, and number of sheets required for printing, selecting paper feeding stage.