Image Forming Apparatus for Automated Sheet Type Registration

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Solution Overview

Problem

In print on demand operations, handling a variety of sheet types increases operator burden and the risk of setting mistakes due to manual loading and tray management, which existing technologies fail to address effectively.

Innovation Solution

An image forming apparatus and method that automates the determination and registration of sheet types based on job specifications, reducing the need for manual operator intervention and minimizing setting errors by integrating a medium management program to associate sheet attributes with tray settings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the types of sheets to be handled are increased to satisfy customers' detailed demands, then the adaptability and customer satisfaction are improved, but the operator burden and the risk of setting mistakes increase

Engineering Contradiction:
Improverange of sheet typesVSAvoidoperator burden
Core Design Contradiction:
Adaptability or versatilityVSEase of operation

Solution Approach 1:

The system enables automatic sheet type determination by having the image forming apparatus itself detect the loaded sheets and set the sheet type without operator intervention. The sheet type setting unit automatically configures the sheet type based on detection results, eliminating the need for manual operation and reducing operator burden while maintaining the ability to handle diverse sheet types

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements a feedback mechanism where the detection unit continuously monitors the sheet feed unit and provides real-time information about loaded sheets. This feedback loop allows the control unit to automatically adjust sheet type settings based on actual sheet conditions, ensuring accurate matching between loaded sheets and printing parameters without requiring manual verification

Inventive Principle:
Principle #23Feedback

2Productivity

If manual sheet loading and tray management are performed according to written work instructions, then the printing process can be executed, but the operator labor increases and setting mistakes may occur

Engineering Contradiction:
Improveprinting process executionVSAvoidoperator labor time
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The image forming apparatus performs self-service by automatically detecting loaded sheets and determining their types without operator intervention. The system autonomously manages the entire process from sheet detection to sheet type setting, eliminating manual labor while maintaining productive printing operations

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system performs preliminary detection of sheet types before the printing process begins. By detecting and setting sheet types in advance, the system prepares the printing apparatus proactively, avoiding the need for manual configuration during actual printing operations and reducing overall processing time

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the operator sets sheet types by operating the operation unit, then the sheet tray configurations can be updated, but the complexity of operations increases and mistakes of setting wrong sheet types are induced

Engineering Contradiction:
Improvesheet type setting accuracyVSAvoidoperation unit operations
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The sheet type setting unit automatically configures sheet types based on detection results without requiring operator input. This self-service mechanism eliminates complex manual operations and potential human errors, achieving both high reliability and operational simplicity

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The detection unit acts as an intermediary between the physical sheets and the control system. It automatically translates physical sheet characteristics into digital sheet type information, which then feeds into the setting unit. This intermediary eliminates the need for direct operator intervention and reduces the complexity of operations while maintaining accurate sheet type configuration

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentEP3944066B1Image forming apparatus and method for controlling same
Publication Date: 2025.09.10 CANON KK
  • EP3944066B1 patent drawingFigure 1
  • EP3944066B1 patent drawingFigure 2
  • EP3944066B1 patent drawingFigure 3

AI summary

An image forming apparatus receives a print job. If the print job includes instruction information for giving an instruction on a sheet setting for a sheet feed unit, the image forming apparatus makes the sheet setting for the sheet feed unit based on the instruction information. The image forming apparatus executes printing based on the print job.