Print Control Based on Paper Supply Position for Ink Replacement
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Solution Overview
Problem
In printing apparatuses with a full front access structure, opening the ink tank attaching portion for replacement during printing can cause paper jams due to interference with the sheet feeding path, and implementing a lock mechanism to prevent this increases costs or complicates the design.
Innovation Solution
A control system that adjusts the notification for ink tank replacement based on the position of the paper sheet supply source, avoiding paper jams by switching the supply source if necessary and displaying timely notifications to replace the ink tank without interrupting printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the ink tank attaching portion is opened for replacement during printing, then the ink tank can be replaced, but paper jams occur due to interference with the sheet feeding path
Solution Approach 1:
The control unit predicts the remaining number of sheets in the current supply source and issues replacement notifications in advance before the sheet count drops below a threshold. This allows users to replace ink tanks during idle periods rather than during active printing, preventing paper jams while maintaining ease of operation
Solution Approach 2:
The system continuously monitors the remaining sheet count in each supply source and provides feedback through replacement notifications. This feedback mechanism allows dynamic adjustment of replacement timing based on actual sheet consumption, ensuring reliable paper transportation while enabling easy ink tank replacement
2Reliability
If a lock mechanism is implemented to prevent opening during printing, then paper jams are prevented, but device complexity and cost increase
Solution Approach 1:
The patent replaces mechanical lock mechanisms with a control-based system that uses sensors to detect supply source positions and a control unit to manage replacement notifications. This substitution eliminates complex mechanical locking components while maintaining reliable paper sheet transportation through intelligent control
3Ease of operation
If replacement notification is issued continuously, then users are prompted to replace ink tanks, but printing operations are interrupted
Solution Approach 1:
The control unit issues replacement notifications in advance when the remaining sheet count exceeds a predetermined threshold, allowing users to plan and execute ink tank replacements during idle periods. This preliminary notification approach maintains printing operation continuity while ensuring timely ink tank replacement
Data Source
AI summary
A print control apparatus includes a resupplier capable of resupplying a printing agent from a printing agent container, a sheet feeder that feeds a paper sheet from one of supply sources, and a control unit configured to perform control in such a way as not to issue a notification to promote increasing of a remaining level of a printing agent resuppliable from the resupplier in a case where a supply source of a paper sheet being printed is a supply source out of the supply sources which is located at a first position, and to issue the notification in a case where the supply source of the paper sheet being printed is a supply source out of the supply sources which is located at a second position.