Dynamic Conveyance Timing for Double-Side Image Recording
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Solution Overview
Problem
Existing double-side image recording apparatuses face challenges in optimizing the conveyance start timing for recording media, leading to potential collisions and reduced throughput, especially when switching between single-side and double-side recording modes.
Innovation Solution
An image recording apparatus with a control section that dynamically adjusts the conveyance start timing based on predetermined conditions to maintain a page gap between recording media, ensuring optimal scheduling for consecutive double-side, single-side, and mixed recording operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conveyance start timing is predetermined based on sheet conveying path length and sheet length, then collision between recording media can be prevented, but the apparatus cannot schedule conveyance timing in real time according to when job information is received, reducing adaptability
Solution Approach 1:
The patent implements dynamic conveyance start timing determination by calculating the number of sheets that can be left in the conveying path based on real-time conditions when job information is received. The system dynamically adjusts the conveyance start timing according to the actual state of the conveying path, rather than using fixed predetermined timing, thereby achieving both collision prevention and real-time scheduling adaptability.
2Reliability
If a large inter-media distance (page gap) is provided between successive recording media, then collision can be prevented, but the number of recordings per unit time decreases, reducing productivity
Solution Approach 1:
The patent optimizes the page gap parameter by calculating the minimum necessary distance based on the conveying path length and sheet length. Instead of using a uniformly large page gap, the system determines the precise minimum gap required to prevent collision, thereby maintaining reliability while maximizing the number of recordings per unit time.
3Adaptability or versatility
If single-side and double-side recording are consecutively performed, then versatility is improved, but the existing predetermined timing methods cannot schedule optimum conveyance start timing for each recording medium, reducing adaptability
Solution Approach 1:
The patent implements dynamic timing adjustment that adapts to different recording modes. When single-side or double-side recording is consecutively performed, the system calculates the conveyance start timing based on the specific mode being executed, ensuring optimal timing for each case while preventing collision. This dynamic approach maintains both versatility and timing accuracy.
Data Source
AI summary
An apparatus and method for printing images on both sides of a recording medium. The timing of starting conveying the next recording medium is determined from a schedule that satisfies three conditions. The first condition a leading end of the next medium reaches a housing section, while maintaining a page gap, when the medium passes completely through the housing section. The second condition both media are not at a recording-medium supply position and the leading end of the next medium reaches the supply position, while maintaining a page gap, when the medium passes completely through the supply position. The third condition when the medium is turned upside down, both media are not at a reversing path section, and the leading end of the next medium reaches the reversing path section, while maintaining a page gap, when the medium passes completely through the reversing path section.