Image Forming Apparatus Automatic Defect Reprint Control
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Solution Overview
Problem
Conventional image forming apparatuses face productivity issues due to the cumbersome process of removing and replacing defective paper sheets, which leads to significant drops in efficiency.
Innovation Solution
An image forming apparatus equipped with an image forming part, an image reader, and a hardware processor that determines image quality based on a threshold for determination, allowing for automatic reprinting and replacement of defective pages, thereby streamlining the waste paper determination process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inspection and replacement of defective paper sheets is performed, then image quality can be determined, but productivity drops considerably due to the troublesome process
Solution Approach 1:
The system performs automatic self-inspection and self-replacement of defective pages. The image reader automatically reads printed materials, the hardware processor automatically determines defects by comparing read data with threshold values, and the system automatically reprints and replaces defective pages without manual intervention, making the system serve itself.
Solution Approach 2:
The manual mechanical process of inspecting and replacing defective pages is replaced by an automated electronic system. The image reader optically reads printed materials, the hardware processor electronically analyzes and determines defects using threshold comparisons, and the controller automatically triggers reprinting and replacement, substituting manual mechanical operations with automated electronic control.
2Reliability
If defective pages are manually removed and replaced, then quality control is achieved, but time consumption increases significantly
Solution Approach 1:
The system maintains continuous operation by automatically detecting defective pages and immediately triggering reprinting and replacement without interrupting the overall workflow. The controller suspends feeding only momentarily for the specific defective page, then resumes continuous operation, minimizing time loss while maintaining quality control.
Solution Approach 2:
The system performs preliminary reading and defect determination for each page before it is fully processed. The image reader reads the printed material as it passes through, the hardware processor determines defects in advance by comparing with thresholds, and defective pages are identified before requiring replacement, enabling proactive quality control.
Data Source
AI summary
An image forming apparatus includes: an image forming part that forms an image on printing paper; an image reader that reads a printed material including the image formed on printing paper by the image forming part; and a hardware processor that determines whether the printed material including the image formed on printing paper by the image forming part is non-defective in accordance with a threshold for determination and read data, the threshold for determination specifying an error margin in a printed state of the printed material including the image formed on printing paper by the image forming part, the read data corresponding to the printed material read by the image reader, wherein the hardware processor performs control to reprint a page on which the printed material including the image formed on printing paper by the image forming part is determined to be defective, and replace the page.