Printer Controller Dynamic Storing Function for Data Security
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Solution Overview
Problem
Conventional image forming apparatuses are less convenient in operation as they restrict data transmission through the external interface used for confidential printing, limiting the ability to transmit and retrieve data other than print data.
Innovation Solution
An image forming apparatus with a controller that enables and disables a storing function, allowing storage and retrieval of image forming data through a portable storage device connected via a second interface, while enabling image formation and data communication independently of the storing function's state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the external interface is used for transmitting print data for confidential printing, then security is improved, but the ability to transmit other data through the external interface is lost
Solution Approach 1:
The patent implements a dynamic switching mechanism that changes the function of the external interface based on operational conditions. The controller switches between confidential printing mode (where the interface transmits only encrypted print data) and normal printing mode (where the interface can transmit various types of data), thereby resolving the contradiction between security and versatility
Solution Approach 2:
The patent segments the data transmission function into two distinct modes: confidential printing transmission and normal data transmission. By separating these functions and enabling selective activation through the determining unit and switching unit, the system maintains security when needed while preserving general data transmission capabilities for other scenarios
2Reliability
If the external interface is dedicated to confidential printing only, then security is improved, but operational convenience deteriorates
Solution Approach 1:
The system dynamically adjusts the interface functionality based on the determined printing mode. When confidential printing is not required, the interface automatically switches to normal mode, allowing users to conveniently transmit and receive various data types without security restrictions, thus maintaining ease of operation
3Adaptability or versatility
If the storing function is always enabled, then data management capability is improved, but system load increases
Solution Approach 1:
The storing function is dynamically enabled or disabled based on the determined printing mode. The controller activates the storing function only when confidential printing is required, and disables it during normal printing operations, thereby reducing unnecessary system load and energy consumption while maintaining data management capability when needed
Data Source
AI summary
In an image forming apparatus, a controller is configured to perform receiving an operation of one of enabling and disabling a particular storing function of storing image forming data related to an image forming job received through a first interface in a portable storage. When receiving the operation of enabling/disabling the particular storing function, the particular storing function is enabled/disabled. In response to receipt of the image forming job through the first interface in a state where the particular storing function is enabled, the image forming data is stored in the portable storage device connected to the second interface. An image is printed with use of the image forming part in accordance with the image forming data stored in the portable storage. Data different from the image forming data is stored in and/or retrieved from the portable storage device in a state where the particular storing function is disabled.