Image Forming Apparatus Preview Display Enlargement Control
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Solution Overview
Problem
Image forming apparatuses face challenges in providing an effective preview display of small original documents, where the display size is often too small for easy confirmation, reducing user convenience.
Innovation Solution
The apparatus includes a control portion that detects the size of the original document based on image data and generates enlargement display data to automatically enlarge the preview display when the document size is below a predetermined threshold relative to the reading region, ensuring the image is displayed at a larger size within the preview region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the preview display shows the entire reading region including small original documents, then the complete image is displayed, but the original document image becomes too small for easy confirmation
Solution Approach 1:
The patent applies local quality by making different regions of the preview display have different magnification levels. Specifically, when an original document is detected to be smaller than the reading region, the system automatically enlarges only that original document image while maintaining the overall preview structure, allowing users to see both the complete reading region context and the enlarged original document details simultaneously.
2Ease of operation
If the preview display automatically enlarges small original document images, then ease of confirmation is improved, but device complexity increases due to size detection and conditional processing
Solution Approach 1:
The patent implements self-service by enabling the preview display to automatically detect original document sizes and adjust enlargement levels without requiring user intervention. The control portion autonomously compares the original document size with the reading region size, determines whether enlargement is needed, and automatically generates the appropriate preview display, thereby improving ease of confirmation while managing complexity through automated decision-making.
3Manufacturing precision
If the preview display shows images at their actual scanned sizes, then manufacturing precision is maintained, but user convenience deteriorates when documents are small
Solution Approach 1:
The patent applies dynamics by making the preview display magnification adaptive rather than fixed. The system dynamically adjusts the enlargement level based on the detected size of the original document relative to the reading region. When the original document is smaller than the reading region, the system automatically increases magnification; when it matches or exceeds the reading region size, normal magnification is maintained, thus preserving manufacturing precision while improving user convenience through conditional adaptation.
Data Source
AI summary
An image forming apparatus includes an operation display portion, an image reading portion which reads a reading region including an original document so as to generate image data and a control portion which generates basic display data for displaying an image in all parts of the reading region including an original document image. When the size of the original document is a threshold value or more smaller than the size of the reading region, the control portion generates enlargement display data for displaying the original document image whose display size is enlarged as compared with the original document image displayed based on the basic display data and makes the operation display portion produce the display based on the enlargement display data.