Alternative Sheet Feeding for Uninterrupted Printer Adjustment
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Solution Overview
Problem
Existing image forming apparatuses face challenges in continuing adjustment processing when a designated sheet feed device fails to feed recording paper sheets, leading to the interruption of the process.
Innovation Solution
The apparatus includes a control device that selects an alternative sheet feed device based on pre-set attribute information, ensuring that recording paper sheets are fed from a suitable alternative device when the primary device fails, allowing the adjustment processing to continue.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a specific sheet feed device is designated for adjustment processing, then the adjustment processing can be performed with a predetermined recording paper sheet, but the process stops when that device fails to feed the sheet
Solution Approach 1:
The system pre-designates alternative sheet feed devices before any failure occurs. When a sheet feed device fails to feed a recording paper sheet during adjustment processing, the control device automatically selects a previously designated alternative device, allowing the process to continue without interruption or manual intervention.
Solution Approach 2:
The control device acts as an intermediary that monitors the sheet feeding status and automatically switches between sheet feed devices. When the primary device fails, the control device intervenes to select and activate an alternative device, ensuring continuous operation of the adjustment processing.
2Productivity
If the system automatically switches to an alternative sheet feed device, then adjustment processing continues without interruption, but the control system becomes more complex
Solution Approach 1:
Alternative sheet feed devices are designated in advance through pre-setting attribute information. This preliminary configuration allows the control device to automatically switch devices without requiring complex real-time decision-making algorithms, thereby maintaining processing efficiency while limiting control complexity.
Solution Approach 2:
The system performs automatic self-switching when a sheet feed device fails. The control device autonomously selects and activates an alternative device based on pre-stored attribute information, eliminating the need for manual intervention and ensuring continuous adjustment processing without increasing operational complexity.
3Reliability
If multiple sheet feed devices are configured with attribute information, then alternative feeding is possible, but the device configuration and management become more difficult
Solution Approach 1:
Attribute information for alternative sheet feed devices is pre-configured and stored in the control device before any failure occurs. This preliminary setup includes identifying characteristics of each device, allowing automatic selection without complex real-time configuration or manual intervention during operation.
Solution Approach 2:
The control device stores attribute information (copies of device characteristics) for multiple sheet feed devices in advance. When switching is needed, the control device references these stored attribute copies to automatically select an appropriate alternative device, simplifying the switching process while maintaining reliability.
Data Source
AI summary
An image forming apparatus includes a plurality of sheet feed devices, an image forming device, and a control device functioning as a controller. The image forming device performs image formation based on a print job or adjustment processing. In executing the adjustment processing, the controller selects, from among the plurality of sheet feed devices, the sheet feed device for adjustment processing about which attribute information meeting a necessary condition for executing the adjustment processing is previously set, allows the selected sheet feed device for adjustment processing to feed the recording paper sheet, and allows the image forming device to perform the adjustment processing. When, in executing the adjustment processing, the sheet feed device for adjustment processing is unable to feed the recording paper sheet, the controller allows a sheet feed device predetermined as an alternative sheet feed device for adjustment processing to feed the recording paper sheet.