Cloud Print Job Fetch on User Login for Faster Recognition
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Solution Overview
Problem
In cloud printing systems, the polling method used by printing apparatuses to check for print jobs often results in long delays between job input and recognition, leading to user inconvenience, especially when users need immediate printing.
Innovation Solution
A printing apparatus is configured to make inquiries about print jobs from the cloud print service only upon user login, using a polling method that integrates user authentication and job acquisition processes to ensure timely job detection and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the printing apparatus uses periodic polling to check for print jobs from the cloud print service, then the apparatus can detect and process print jobs, but there are long delays between job input and recognition
Solution Approach 1:
The printing apparatus performs preliminary actions by establishing a notification relationship with the cloud print service in advance. Instead of waiting for periodic polling intervals, the system is pre-configured to receive real-time notifications when print jobs are uploaded to the cloud service, enabling immediate detection and processing of jobs as soon as they become available.
2Speed
If the printing apparatus continuously polls for print jobs, then job detection speed improves, but energy consumption and system load increase
Solution Approach 1:
The system transitions from continuous or high-frequency periodic polling to event-triggered periodic action. The printing apparatus maintains a notification subscription with the cloud print service, receiving updates only when relevant events occur (i.e., when new print jobs are uploaded). This approach achieves fast job detection speed while minimizing energy consumption by keeping the system in a low-power state between notifications.
3Reliability
If the printing apparatus implements user login processing before displaying print jobs, then security and user management are improved, but the overall process time increases
Solution Approach 1:
The system performs preliminary actions by pre-fetching and caching print job information from the cloud print service as soon as notification is received, before user login occurs. When the user logs in, the apparatus already has the job data ready in memory, allowing immediate display and selection without requiring the user to wait for job retrieval during the login process. This maintains security through proper authentication while minimizing perceived process time.
Data Source
AI summary
A control method of a printing apparatus for acquiring a print job from a cloud print service, and performing printing based on the acquired print job includes transmitting, in a case where a notification received from the cloud print service includes information indicating that a fetchable print job exists, a first request related to the print job, to the cloud print service, executing login processing of causing a user to log into the printing apparatus, and transmitting a second request related to the print job, to the cloud print service conditional upon the login processing being performed.