Media Sensor Sheet Type Selection for Automatic Print Control
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Solution Overview
Problem
Existing image forming apparatuses struggle to determine the type of sheet during printing, as users manually set the sheet type, leading to potential misidentification.
Innovation Solution
The image forming apparatus includes a detection unit to detect sheet features and a selection unit to automatically select the sheet type based on detected features, allowing for automatic determination of sheet type using a media sensor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user uniquely sets the sheet type, then the print control parameters can be precisely controlled for the specific sheet, but the image forming apparatus cannot determine the sheet type at the time of printing
Solution Approach 1:
The system enables self-service by allowing users to register custom sheet types with their specific print control parameters. The apparatus automatically detects sheet feature values and matches them against the registered database, eliminating the need for manual parameter setting while ensuring precise control for each sheet type.
Solution Approach 2:
The system performs preliminary action by pre-registering sheet types and their corresponding print control parameters in a database before actual printing operations. This advance preparation enables rapid automatic identification and parameter retrieval during printing, resolving the contradiction between user customization and automatic determination.
2Adaptability or versatility
If multiple sheet types correspond to the detected feature values, then the system has flexibility in matching, but the sheet type cannot be uniquely determined
Solution Approach 1:
The system applies local quality by using multiple distinct feature values (surface property, basis weight, and optionally other characteristics) to characterize each sheet type. This multi-dimensional approach ensures that each sheet type has a unique quality signature, enabling precise identification even when some features overlap between different sheet types.
3Ease of operation
If the system automatically selects sheet type from database, then user convenience is enhanced, but the complexity of the selection process increases
Solution Approach 1:
The system segments the sheet type identification process into distinct functional modules: a detection unit that measures sheet feature values, a database that stores pre-registered sheet types and parameters, and a selection unit that performs pattern matching. This modular segmentation manages complexity by assigning specific functions to each component while maintaining overall system simplicity through automated operation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate and automatic identification of sheet type, eliminating the need for user intervention and ensuring optimal print control parameters are applied.
Implementation Method 1
a sensor (media sensor) that measures feature values, such as the surface property and the basis weight, of a sheet on a sheet feeding path
Data Source
AI summary
If a plurality of types of papers correspond to a feature value detected by a media sensor, an image forming apparatus automatically selects, on the basis whether a type of paper is defined by a user, one from among the plurality of types of papers.