Automatic Paper Registration in Image Forming Apparatus

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Solution Overview

Problem

Conventional image forming apparatuses require manual registration of paper types before printing, which is time-consuming and decreases efficiency, especially when various types of paper are used, as they cannot feed unregistered paper unless it is set as default, leading to canceled or rerun print jobs.

Innovation Solution

The apparatus automatically registers paper types by searching for matching attributes in a paper management table or provisionally registers paper based on designated attributes, allowing for seamless selection and use of desired paper without prior registration, reducing operator workload and improving efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If manual paper registration is required before printing, then paper type control precision is improved, but printing productivity deteriorates due to time-consuming registration work

Engineering Contradiction:
Improvepaper type control precisionVSAvoidprinting productivity
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The system performs automatic paper registration by having the apparatus itself detect paper attributes using a medium sensor and automatically register the paper information in the paper management table, eliminating the need for manual operator intervention in the paper registration process while maintaining accurate paper type control

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system pre-registers paper information in the paper management table by detecting paper attributes before printing jobs are submitted, so that when a print job arrives, the paper is already registered and ready for use, eliminating the need for registration at the time of printing

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If various types of paper are used, then paper selection versatility is improved, but registration work complexity increases

Engineering Contradiction:
Improvepaper selection versatilityVSAvoidregistration work complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system automatically detects paper attributes using the medium sensor and registers paper information without requiring operator intervention, so that even when various types of paper are used, the registration process remains simple and automatic rather than becoming more complex

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system changes the approach from manual parameter input to automatic parameter detection by using the medium sensor to detect paper attributes, allowing versatile paper selection while keeping the registration process simple through automated parameter acquisition

Inventive Principle:
Principle #35Parameter changes

3Reliability

If paper registration is required before printing, then paper feeding reliability is improved, but operation time increases

Engineering Contradiction:
Improvepaper feeding reliabilityVSAvoidoperation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system performs paper registration in advance by detecting paper attributes and storing them in the paper management table before print jobs are submitted, so that paper feeding reliability is ensured while eliminating the time loss that would occur if registration had to be done at the time of printing

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system automatically performs paper registration using the medium sensor without requiring operator time, maintaining reliable paper feeding through automatic detection and registration while minimizing the time operators need to spend on registration tasks

Inventive Principle:
Principle #25Self-service

Data Source

PatentEP2520980B1Image forming apparatus, information processing method in image forming apparatus, and storage medium storing program
Publication Date: 2020.12.30 CANON KK
  • EP2520980B1 patent drawingFigure 1
  • EP2520980B1 patent drawingFigure 2
  • EP2520980B1 patent drawingFigure 3

AI summary

Attribute information representing the attributes of a printing medium is stored for each printing medium. Upon receiving a print job which designates the attributes of a printing medium, it is determined whether attribute information representing the attributes designated by the print job is stored. When it is determined that the attribute information is not stored, the attribute information representing the attributes designated by the print job is newly registered.