Image Former Paper Type Detection and Multi-Job Control
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Solution Overview
Problem
Conventional image forming apparatuses face difficulties in accurately recognizing paper types during multi-job executions, leading to operational errors and material waste due to incorrect paper supply or mixing of paper bundles.
Innovation Solution
An image forming apparatus equipped with a paper detector and a hardware processor that performs two judgments: one to match user-designated paper identification information with detected paper properties and another to verify consistency between consecutive sheets, controlling the image formation process based on these judgments to prevent errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional paper detection means is used to detect physical properties of paper, then paper type detection is enabled, but accurate recognition of paper types during multi-job executions cannot be achieved leading to operational errors
Solution Approach 1:
The system performs preliminary paper type detection and stores detection results in a storage unit before image formation begins. This preliminary action allows the system to recall and compare paper type information during multi-job executions, ensuring accurate paper type recognition and preventing operational errors when multiple jobs are processed sequentially.
Solution Approach 2:
The system implements a feedback mechanism where paper type detection results are stored and then referenced during image formation control. The control unit compares the stored paper type information with current job requirements, providing feedback to verify paper type accuracy and prevent incorrect paper usage during multi-job operations.
2Loss of information
If paper detection is performed during image formation, then paper type can be identified, but correspondence between execution instructions and paper types cannot be recognized leading to material waste
Solution Approach 1:
The system performs preliminary paper type detection and stores the results before image formation begins. This allows the system to verify paper type correspondence with execution instructions in advance, preventing material waste by ensuring the correct paper type is used for each job before image formation commences.
Solution Approach 2:
The control unit uses stored paper type detection results to provide feedback during job execution, verifying that the detected paper type matches the required paper type for the current job. This feedback mechanism prevents operational errors and material waste by identifying mismatches before image formation occurs.
Data Source
AI summary
An image forming apparatus includes an image former that forms an image on a sheet of paper, a detector that detects a physical property of a sheet of paper, a receiver that receives paper identification information used in identification of a sheet of paper designated by a user, and a hardware processor. The hardware processor performs: first judgement of judging whether or not there is a correspondence between the paper identification information received by the receiver and a detection result by the detector, second judgement of judging whether or not there is a correspondence between a detection result by the detector of a first sheet of paper conveyed and a detection result by the detector of a second sheet of paper conveyed; and operation control of the image former based on a first judgement result in the first judgement and a second judgement result in the second judgement.