Image Reading Apparatus Clear Set Orientation Guidance
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Solution Overview
Problem
Existing image reading apparatuses face challenges in accurately reading documents tucked in clear sets due to orientation and size limitations, leading to incomplete image capture, especially when documents are curled or thin, as they may extend beyond the readable range or not be correctly recognized.
Innovation Solution
An image reading apparatus with a transparent document platen and a controller that allows for a reading mode to handle documents tucked in storage members with transparent portions, displaying instructions on the orientation for proper placement to ensure accurate reading, and setting the dimension range for clear sets to prevent edge detection issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a clear set is used to hold documents on the platen glass, then documents can be read without curling or moving, but the clear set may extend beyond the readable range causing edge portions of documents to be unreadable
Solution Approach 1:
The system performs preliminary detection of the clear set's position and dimensions before the actual image reading process. The controller detects the outer edges of the clear set and determines its dimension range in advance, then uses this information to adjust the reading range parameters, ensuring that the entire document within the clear set is captured without missing edge portions.
2Productivity
If the reading range is determined by standard document sizes, then reading operations can be performed quickly, but documents in clear sets with non-standard dimensions may not be correctly recognized
Solution Approach 1:
The system dynamically adjusts the reading range parameters based on the detected clear set dimensions. Instead of using fixed standard document sizes, the controller automatically determines the appropriate reading range by detecting the outer edges of the clear set and calculating its dimension range, allowing the system to adapt to various clear set sizes while maintaining efficient operation.
3Quantity of substance
If the clear set is placed with long side in cross feed direction, then more documents can fit on the platen, but the outer edge of the clear set extends beyond the readable range
Solution Approach 1:
The system uses feedback from edge detection sensors to determine the actual position and orientation of the clear set on the platen. By detecting the outer edges of the clear set and comparing their positions with the expected readable range, the controller can identify when the clear set is incorrectly oriented and provide guidance to the user, or automatically adjust the reading parameters to ensure complete document capture.
Data Source
AI summary
An image reading apparatus includes a transparent document platen on which a document is to be placed, a reader configured to read an image of the document placed on the document platen, a controller configured to perform a reading mode to cause the reader to read a document tucked in a storage member, which has a transparent portion and can store the document, in a state in which the storage member in which the document is tucked is placed on the document platen so that the transparent portion contacts the document platen, and a display configured to display, in the reading mode, a screen indicating an orientation in which the storage member is to be placed on the document platen.