Image Forming Device Mail Addressing for SMTP and PIN Authentication

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Solution Overview

Problem

Existing image forming devices face issues with the Scan to Mail function due to mismatched authentication information, leading to mail server rejections and reduced convenience.

Innovation Solution

The image forming device includes a reading unit, user authentication unit, mail transmission unit, and transmission source mail address setting unit, which execute user authentication using either SMTP or PIN methods, and set the transmission source mail address accordingly to ensure successful mail transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the transmission source mail address is set to match the From header of the received electronic mail, then the mail server may reject the electronic mail due to authentication information mismatch, but if a fixed mail address is used, then the Scan to Mail function becomes less convenient and flexible

Engineering Contradiction:

Improvemail transmission success rateVSAvoidconvenience of Scan to Mail function

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The transmission source mail address is dynamically determined based on the authentication method used. When SMTP authentication is used, the transmission source mail address is set to the mail address in the From header; when other authentication methods are used, a fixed mail address is used. This dynamic adjustment resolves the contradiction by adapting the mail address setting to the authentication context.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of transmission source mail address based on the authentication method. By detecting which authentication method was used (SMTP or other), the system automatically adjusts the mail address parameter to appropriate values, ensuring both reliability and convenience.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple authentication methods are supported to increase versatility, then the system becomes more flexible, but the complexity of managing different authentication methods and their corresponding mail addresses increases

Engineering Contradiction:

Improveauthentication method flexibilityVSAvoidauthentication management complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system automatically determines the appropriate transmission source mail address based on the authentication method used, without requiring manual configuration or user intervention. The authentication unit itself provides the necessary information (authentication method) that the control unit uses to set the mail address, making the system self-configuring and reducing management complexity.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The authentication unit provides feedback about which authentication method was successfully used. The control unit receives this feedback and automatically adjusts the transmission source mail address setting accordingly. This feedback mechanism enables the system to handle multiple authentication methods without increasing management complexity.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250294109A1Image forming device, control method, and non-transitory computer-readable storage medium storing program

Publication Date: 2025.09.18 SEIKO EPSON CORP

AI summary

A multifunction peripheral coupled to a mail server includes: a reading unit that reads a document; a user authentication unit that executes user authentication according to an SMTP authentication method or a PIN authentication method; an electronic mail transmission unit that transmits, to the mail server, an electronic mail to which information read by the reading unit is attached; and an electronic mail setting unit that sets a transmission source mail address of the electronic mail according to an authentication method when the user authentication unit executes the user authentication.