Image Forming Apparatus Abnormality Detection Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image forming apparatuses stop image formation unnecessarily due to detected abnormalities, leading to wasted time and reduced productivity, as they fail to differentiate between abnormalities that affect the final output and those that do not, and lack efficient mechanisms to continue or transfer jobs based on the state of the output matter.
Innovation Solution
An image forming apparatus that compares image data used for formation with read-out image data to detect abnormalities and adjusts its control state accordingly, allowing image formation to continue if abnormalities do not impact the final output, and transfers jobs or stops them appropriately based on sheet processing conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image formation is stopped when abnormalities are detected, then image quality reliability is improved, but productivity deteriorates due to unnecessary downtime
Solution Approach 1:
The patent applies local quality by differentiating the impact of abnormalities based on their specific locations on the sheet. Abnormalities in the cut-off region are treated differently from those in the final output region. The control section determines whether to stop image formation based on the specific location and nature of the detected abnormality, allowing continuation when abnormalities are in regions that will be cut off, thus maintaining productivity while ensuring output quality.
2Manufacturing precision
If image formation is stopped when abnormalities are detected, then output quality is improved, but time is wasted due to redundant rework
Solution Approach 1:
The patent applies preliminary action by detecting abnormalities before they affect the final output through sheet processing. The control section predicts whether abnormalities will persist after cutting or sheet processing by analyzing their locations and types in advance. This allows the system to continue image formation when abnormalities are likely to be removed by subsequent processing, preventing time-wasting rework while maintaining output quality.
3Measurement precision
If conventional abnormality detection is used, then abnormal images are detected, but the system cannot differentiate between abnormalities that require stopping versus continuing
Solution Approach 1:
The patent applies dynamics by making the control response adaptive rather than static. The control section dynamically adjusts its response based on the characteristics of detected abnormalities, including their location, type, and predicted impact after sheet processing. This dynamic control approach allows the system to flexibly decide whether to stop or continue image formation, providing adaptability while maintaining precise abnormality detection.
Data Source
AI summary
An image forming apparatus includes an image forming section configured to form an image on a sheet and a control section configured to control image formation at the image forming section and is connectable to a reading apparatus and a sheet processing apparatus. The control section includes a function to compare image data for image formation at the time of forming an image on the sheet at the image forming section with read-out image data produced from an image read out from the sheet at the reading apparatus; a function to detect an image abnormality from a comparison result; and a function to change a control state of an image forming action in accordance with sheet processing executed at the sheet processing apparatus at the time of having detected the image abnormality.