Printer Tray Segmentation for Secure Output Isolation
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Solution Overview
Problem
In shared printing environments, printed content can be inadvertently visible to other users when a different user initiates a print job during an ongoing secure printing process, compromising confidentiality.
Innovation Solution
An image recording apparatus with multiple discharge trays, detectors, and a controller that ensures secure printing by authenticating users and directing printed output to unoccupied trays, preventing mixing with already printed documents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If authentication procedure is implemented before printing, then confidentiality of printout is enhanced, but another user can still observe the content being printed
Solution Approach 1:
The patent divides the single discharge tray into multiple discharge trays (first discharge tray and second discharge tray). Secure printing outputs are directed to a specific discharge tray (second discharge tray) that is separate from the tray used for ordinary printing (first discharge tray). This segmentation prevents other users from observing secure printing content since they only access the ordinary printing tray.
2Reliability
If multiple discharge trays are used for secure printing, then confidentiality is maintained, but device complexity increases
Solution Approach 1:
The controller manages multiple discharge trays with different functions: the first discharge tray handles ordinary printing outputs, while the second discharge tray handles secure printing outputs. This multi-functionality allows the system to maintain confidentiality without requiring completely separate printing systems, as the same printer device handles both types of printing through intelligent tray selection.
3Reliability
If authentication information is confirmed before recording, then secure printing is ensured, but printing process time increases
Solution Approach 1:
The controller performs authentication information confirmation before the actual printing process begins. By completing the authentication check in advance, the system ensures that only authorized users can initiate secure printing, while the actual printing time is not extended. The authentication step is separated from the recording time calculation, so security verification does not add to the perceived printing duration.
Data Source
AI summary
An image recording apparatus, including: a recording device; discharge trays; a discharge mechanism; detectors; an input device through which is inputted authentication information relating to image data; and a controller including: an image-data reception portion; an authentication-information confirming portion to make a confirmation as to whether the authentication information contains specific information; a confirmation-necessity judging portion to judge whether the confirmation by the confirming portion with respect to the image data is necessary; a selecting portion to select one discharge tray on which the recording medium is not placed, wherein, where the judging portion judges that the confirmation is necessary, the controller permits selection of the one discharge tray, controls the recording device to record the image based on the image data after the confirmation that the authentication information contains the specific information, and controls the discharge mechanism to discharge, to the selected one discharge tray, the image-recorded recording medium.