Print Job Storage Time Management in Printing Apparatus
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Solution Overview
Problem
Existing printing apparatuses delete print data prematurely when the storage space is full, leading to unnecessary retransmission of data, which is not suitable for users.
Innovation Solution
A printing apparatus that calculates and sets a storage time-period for print data when the storage space is low, allowing data to be stored for a longer period and deleting it only after the set time has elapsed, thereby optimizing storage usage and reducing unnecessary data retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the printing apparatus deletes the earliest spooled print data when the total data size exceeds the reference data size, then the free capacity of the spool area is increased, but the print data may be deleted before it is needed requiring retransmission
Solution Approach 1:
The system performs preliminary actions by setting a storage time-period for print data before the spool area becomes full. This allows the system to proactively manage storage by establishing retention policies in advance, ensuring that print data is not deleted until the predetermined time-period elapses, thus preventing unnecessary data loss and retransmission
Solution Approach 2:
The system dynamically adjusts storage management by introducing time-based retention policies. Instead of statically deleting the earliest spooled data when space is full, the system makes storage duration flexible by allowing data to be retained for a predetermined time-period, adapting to varying user needs for data retention while managing spool area capacity
2Reliability
If the printing apparatus stores all print data indefinitely, then the availability of print data for reprinting is improved, but the storage burden on the spool area increases
Solution Approach 1:
The system implements periodic action through time-based storage management. Print data is retained for a predetermined time-period and then automatically deleted, creating a regular cycle of data retention and disposal. This periodic approach ensures that storage resources are efficiently utilized while maintaining data availability for the necessary duration
Solution Approach 2:
The system changes the storage parameter from indefinite retention to time-limited retention by introducing a predetermined time-period parameter. This parameter modification allows the system to balance between maintaining data availability and managing storage burden, as data is automatically removed after the specified time elapses, preventing unlimited accumulation
Data Source
AI summary
A printing apparatus includes: a receiving section which receives a print data from the external apparatus; a storage section in which the print data received by the receiving section is stored; an input section which receives from a user a print instruction for printing based on the print data stored in the storage section; a print section which performs the printing of the image on the recording medium based on the print data stored in the storage section in a case that the input section receives the print instruction from the user; and a controller which controls the storage section and which calculates and sets for the print data stored in the storage section a storage time-period within which the print data is storable in the storage section.