Fixing Unit Control for Envelope Crease Prevention
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Solution Overview
Problem
Image forming apparatuses of tandem type lack configuration to prevent creases on envelopes during printing or copying, as they require both fixing units to be exchanged to envelope-specific units, and standard units may not optimize fixing conditions like temperature control and speed for envelopes.
Innovation Solution
An image forming apparatus with a control portion that determines whether both fixing units are envelope-specific, allowing an envelope mode control operation to optimize fixing conditions, and informs the user to exchange non-envelope units, ensuring optimal fixing conditions for envelopes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If standard regular fixing unit is used to fix envelope, then fixing can be performed without exchanging units, but envelope may suffer creases due to non-optimized fixing conditions
Solution Approach 1:
The control portion checks whether envelope-specific fixing units are installed in both copying portions before allowing envelope mode operation. This preliminary verification ensures that optimal fixing conditions are available before processing, preventing creases while maintaining ease of operation through automated detection and guidance.
Solution Approach 2:
The control portion provides feedback to the user when envelope-specific fixing units are not properly installed in both copying portions. This feedback mechanism guides users to exchange units as needed, ensuring optimal fixing conditions are met while maintaining system usability.
2Productivity
If envelope mode control operation is allowed without checking fixing units, then processing can proceed immediately, but fixing conditions are not optimized causing creases
Solution Approach 1:
The control portion performs a preliminary check to verify that envelope-specific fixing units are installed in both copying portions before enabling envelope mode operation. This advance verification ensures optimal fixing conditions are in place, preventing creases while minimizing impact on processing speed through efficient automated detection.
3Object-affected harmful factors
If system requires both fixing units to be exchanged to envelope-specific units, then optimal fixing conditions are achieved, but manual intervention and unit exchange are required
Solution Approach 1:
The control portion automatically detects whether envelope-specific fixing units are installed in both copying portions and provides feedback guidance to users when exchange is needed. This feedback mechanism maintains optimal fixing conditions while improving ease of operation through automated verification and user guidance, reducing the burden of manual unit exchange.
Solution Approach 2:
The control portion performs self-verification of fixing unit installation status and automatically guides users through the exchange process when needed. This self-service approach ensures optimal fixing conditions are maintained while minimizing user effort, as the system autonomously monitors and directs unit exchange requirements.
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
Prevents creases on envelopes by ensuring optimal fixing conditions such as temperature control and speed during duplex printing, maintaining high-quality printing or copying without manual intervention for unit exchanges.
Implementation Method 1
a first fixing unit that fixes the first image formed by the first copying portion on the sheet of pager containing the envelope
Data Source
AI summary
An image forming apparatus includes first and second image-forming portions and an intermediate transporting portion. A control unit checks fixing units in the image-forming portions and determines whether or not the fixing unit in the first image-forming portion is a fixing unit for an envelope. If not, the control unit controls a manipulation and display unit to display guidance for urging a user to exchange the first fixing unit. If so, the control unit determines whether or not too fixing unit in the second image-forming portion is a fixing unit for an envelope. If not, the control portion controls a manipulation and display unit to display a guidance for urging a user to exchange the second fixing unit. If both of fixing units in the first and second image-forming portions are fixing units for the envelope, the control unit allows an envelope mode control operation.