Transfer Apparatus Curl Correction Control

Solution Overview

Problem

Conventional transfer apparatuses cause damage to card-shaped recording media due to repeated decurl processing, which is necessary when transferring images on both sides of the card, leading to increased curl correction and potential deterioration.

Innovation Solution

A transfer apparatus with a control device that determines whether to perform decurl processing based on the comparison between the current and subsequent transfer faces and the curl status of the card, thereby minimizing unnecessary decurl operations and reducing card damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If decurl processing is performed for each transfer operation on both sides of the card, then the card is corrected after each transfer, but the card damage increases due to repeated pressing and loading

Engineering Contradiction:

Improvecurl correctionVSAvoidcard damage

Core Design Contradiction:

Manufacturing precisionVSObject-affected harmful factors

Solution Approach 1:

The system performs preliminary judgment about whether decurl processing is necessary before executing it. By comparing the current transfer face with the subsequent transfer face and assessing curl status, the system determines in advance whether decurl processing should be performed, thereby avoiding unnecessary processing and reducing card damage.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from curl detection to control whether decurl processing is performed. The curl detection unit provides information about the card's curl state, and this feedback is used by the control unit to make intelligent decisions about subsequent decurl processing, avoiding unnecessary operations.

Inventive Principle:

Principle #23Feedback

2Productivity

If transfer processing is performed multiple times on one face of the card, then complete images can be transferred, but decurl processing must be performed multiple times increasing card deterioration

Engineering Contradiction:

Improvetransfer completenessVSAvoidcard durability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary judgment about whether decurl processing is necessary before executing it. By comparing the current transfer face with the subsequent transfer face and assessing curl status, the system determines in advance whether decurl processing should be performed, thereby avoiding unnecessary processing and reducing card damage.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from curl detection to control whether decurl processing is performed. The curl detection unit provides information about the card's curl state, and this feedback is used by the control unit to make intelligent decisions about subsequent decurl processing, avoiding unnecessary operations.

Inventive Principle:

Principle #23Feedback

3Manufacturing precision

If decurl processing is performed every time after transfer, then curls are consistently corrected, but the processing time increases due to unnecessary operations

Engineering Contradiction:

Improvecurl correction consistencyVSAvoidprocessing time

Core Design Contradiction:

Manufacturing precisionVSLoss of time

Solution Approach 1:

The system performs preliminary judgment about whether decurl processing is necessary before executing it. By comparing the current transfer face with the subsequent transfer face and assessing curl status, the system determines in advance whether decurl processing should be performed, thereby avoiding unnecessary processing and reducing card damage.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from curl detection to control whether decurl processing is performed. The curl detection unit provides information about the card's curl state, and this feedback is used by the control unit to make intelligent decisions about subsequent decurl processing, avoiding unnecessary operations.

Inventive Principle:

Principle #23Feedback

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

Effectively corrects curls in card-shaped recording media while preventing deterioration by optimizing decurl processing based on transfer face comparisons and curl status, reducing the frequency of decurl operations and minimizing card damage.

Implementation Method 1

transfer processing is performed by applying heat to the card and the transfer film with the heat roller to transfer the transfer layer of the transfer film to the card

Methodology Applied

Scientific EffectHeat transfer: Conduction (thermal)

Implementation Method 2

a curl occurs with contraction of the transfer film as the transferred card and the transfer film get cooled

Methodology Applied

Scientific EffectThermal contraction: Thermal Contraction

Data Source

PatentUS10029479B2Transfer apparatus

Publication Date: 2018.07.24 CANON FINETECH NISCA INC

AI summary

The present invention is to provide a transfer apparatus which can effectively correct a curl of a card and prevent deterioration of the card.The transfer apparatus transfers a transfer layer of a transfer film with a transfer roller to both faces of a card, a transfer unit which includes the transfer roller is structured to perform transfer processing for a plurality of times on at least one face of the card. A controller performs control to perform decurl processing with a decurl mechanism when determining that a transfer face on which the current transfer processing is performed and a transfer face on which the subsequent transfer processing is to be performed are the same and that the card is curled after the current transfer processing is performed.