Image Defect Diagnosis Using Object Position Correlation
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Solution Overview
Problem
Existing image forming systems require additional modes for determining the state of units causing image defects, which is time-consuming and inefficient.
Innovation Solution
An image forming system that includes a hardware processor to acquire position information and read image data during operation, determining the state of objects based on these data to identify defects without the need for separate modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an abnormal portion specifying mode is executed separately from normal image forming mode to determine the state of units, then the state determination can be performed, but time and effort are increased due to requiring additional operational modes
Solution Approach 1:
The patent combines the state determination function with the normal image forming mode by integrating an image reader that captures images during regular operation. The control unit analyzes these images to determine the state of units (photoreceptor, transfer part, fixer) without requiring a separate abnormal portion specifying mode, thus merging measurement and production functions into a single operational flow.
Solution Approach 2:
The system performs continuous state determination during normal image forming operations. The image reader continuously captures images of the recording medium throughout the printing process, and the control unit continuously analyzes these images to monitor unit states, eliminating the need to stop or switch to a special diagnostic mode.
2Productivity
If position information of objects is acquired during image formation operations and correlated with image data, then rapid identification of defective units is achieved, but the system complexity increases due to additional sensing and processing requirements
Solution Approach 1:
The control unit serves multiple functions: it controls the swinging motion of the fixer during image formation, processes image data from the reader, determines unit states, and identifies defective portions. This multi-functional design eliminates the need for separate dedicated diagnostic hardware, reducing overall system complexity while maintaining high productivity.
Solution Approach 2:
The system implements a feedback mechanism where images of the recording medium are captured during formation, analyzed by the control unit to determine unit states, and used to identify defective portions. This real-time feedback loop enables rapid defect identification without requiring separate inspection equipment or complex additional processing systems.
Data Source
AI summary
There is provided an image forming system including an object that is an element included in an image former that forms an image on a recording medium and that moves in a main scanning direction during an operation related to image formation based on a print job, a hardware processor that acquires position information of the object in the main scanning direction during the operation, and a reader that reads the image on the recording medium formed by the operations, in which the hardware processor determines a state of the object on a basis of the acquired position information and read image data read by the reader.