Spool Side Face Marker for Cartridge Information Detection
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Solution Overview
Problem
Existing systems for reading information from roll-shaped long members, such as cartridges in inkjet-type image forming apparatuses, require dedicated readers, which is inconvenient and inefficient.
Innovation Solution
A spool with markers on its side face, orthogonal to the rotation axis, that includes information-detection bit markers, allowing for the detection of information regarding the long member without the need for a dedicated reader, using a conveying device with sensors and a controller to read and decode the marker information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a dedicated reader is used to read information from the cartridge, then information reading accuracy is improved, but device complexity and operational convenience deteriorate
Solution Approach 1:
The patent replaces the dedicated reader (mechanical/optical reading device) with a sensor system that detects markers on the spool. The sensor detects the presence and position of markers (e.g., reflective, absorptive, or color-coded) on the spool surface, converting physical marker patterns into electrical signals for information identification. This substitution eliminates the need for complex dedicated reading hardware while maintaining information reading capability.
Solution Approach 2:
Instead of using a dedicated reader to directly read information from the cartridge, the system uses markers on the spool that represent or encode cartridge information. These markers serve as simplified copies or representations of the actual cartridge data, which can be detected by simple sensors rather than complex readers. The marker patterns (presence/absence, colors, positions) encode information about the long member type, size, or other attributes.
2Loss of information
If a dedicated reader is used to read information from the cartridge, then information reading capability is improved, but ease of operation deteriorates
Solution Approach 1:
The spool is designed with markers that automatically present information to the sensor during normal operation. As the spool rotates or is positioned in the device, the markers pass by the sensor, which automatically detects and reads the information without requiring manual intervention. The system performs self-service information reading, eliminating the need for operators to manually input data or use separate reading procedures.
Solution Approach 2:
The markers are pre-configured on the spool during manufacturing, encoding information about the long member before the cartridge is even installed in the device. This preliminary encoding of information allows the system to immediately identify cartridge type and parameters as soon as the cartridge is installed, without requiring subsequent manual data entry or complex reading operations.
3Loss of information
If markers are added to the spool for information detection, then information reading capability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent uses markers with different optical properties (reflective, absorptive, color-coded) that can be applied to the spool surface. These markers can be implemented as colored rings, printed patterns, or attached elements that are easily distinguishable by optical sensors. The use of color and optical property variations provides a simple, low-cost method for encoding information on the spool without requiring complex manufacturing processes.
Solution Approach 2:
The information encoding is divided into discrete marker elements (e.g., multiple rings, segmented patterns, or individual markers at different positions) rather than requiring complex continuous patterns. Each marker or marker combination represents a specific piece of information, allowing for modular and simplified manufacturing where markers can be individually applied or attached to the spool.
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 the reading and recording of information, including model numbers and serial numbers, directly from the spool, eliminating the need for dedicated readers and improving operational efficiency in managing long member cartridges.
Implementation Method 1
the spool reflecting one aspect of the present invention comprises: a marker with which a side face of the spool is provided
Data Source
AI summary
A spool that is rotatably journaled and has a long member wound around the spool, includes: a marker with which a side face of the spool is provided, the side face being orthogonal to a rotation axis of the spool, wherein the marker includes an information-detection bit marker indicating information regarding the long member.