Image Forming Apparatus Copy Region Determination
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Solution Overview
Problem
Conventional image forming apparatuses fail to accurately determine and print the intended range of a document when copying both sides, especially when the binding direction of the original document differs from that of the output sheet, leading to unintended double-side copying.
Innovation Solution
An image forming apparatus equipped with an original document detection section, size setting, top position setting, binding direction setting, output size setting, and print magnification ratio setting, along with a copy region determination section that references the top left corner of the original document, ensures accurate determination and printing of the intended range by rotating images if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If double-side scanning is performed without considering binding direction and top position, then scanning speed is improved, but image placement accuracy deteriorates
Solution Approach 1:
The system performs preliminary detection of the original document's binding direction and top position before scanning begins. This preliminary action allows the control section to pre-calculate the appropriate scan directions and image placement positions, ensuring accurate image placement while maintaining efficient double-side scanning operations.
2Productivity
If automatic document feeding is used for double-side scanning, then operation efficiency is improved, but copy region determination accuracy deteriorates
Solution Approach 1:
The system incorporates feedback mechanisms where the detected binding direction and top position information from the original document are continuously used to adjust and determine the correct copy regions. The control section uses this feedback to calculate appropriate scan directions and ensure accurate image placement on the output sheet, maintaining precision despite high-speed automatic feeding.
3Adaptability or versatility
If print magnification is changed without adjusting copy region determination, then printing flexibility is improved, but image displacement occurs
Solution Approach 1:
The system dynamically adjusts the copy region determination based on the selected print magnification. The control section calculates the appropriate copy regions by considering both the binding direction/top position detection results and the print magnification settings, allowing flexible magnification changes while preventing image displacement through real-time parameter adjustment.
Data Source
AI summary
An image forming apparatus which has a double-side copying function, including: at least either one of an original document detection section that detects a size of an original document, and an original document size setting section that sets a size of the original document as required; an original document top position setting section that sets a top position of the original document as required; a binding direction setting section that sets a binding direction of the original document and a binding direction of an output sheet as required; an output size setting section that sets a size of the output sheet as required; a print magnification ratio setting section that sets a print magnification ratio as required; and a copy region determination section that sets a copy region with reference to a top left corner of the original document, the top left corner being identified when the original document is placed such that the top position thereof is upward.