Conveyor Printer Synchronization for Reduced First Page Delay
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Solution Overview
Problem
Laser printers have a long warm-up period, known as 'first page' or 'time to first page,' which makes them unsuitable for conveyor-based printing, folding, and inserting systems, resulting in slow throughput and increased maintenance costs.
Innovation Solution
A system that synchronizes the operation of a conveyor and a laser printer using a controller to queue documents and release cartons only when the outbound conveyor capacity reaches a predetermined threshold, allowing for continuous printing and reducing the frequency of the 'first page' delay, thereby enhancing throughput without the need for multiple printers or complex buffering systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser printer settings are adjusted to reduce first page times, then throughput is improved, but printer wear and maintenance requirements increase
Solution Approach 1:
The system performs preliminary actions by releasing a group of cartons in advance and initiating printing before the cartons reach the printing area. This allows the printer to warm up and print multiple pages continuously without idle time, reducing first page delays while maintaining factory standard settings and avoiding increased wear.
2Productivity
If multiple printers are used to reduce first page delays, then throughput is improved, but device complexity increases
Solution Approach 1:
The system ensures continuity of useful action by releasing a group of cartons and initiating printing such that the laser printer continuously prints multiple pages without idle time or first page delays. This single-printer approach achieves the throughput of multiple printers while maintaining simpler system architecture.
3Device complexity
If conventional printing approaches are used, then equipment cost is reduced, but throughput is too slow
Solution Approach 1:
The system applies dynamics by implementing a controller that dynamically monitors carton positions on the conveyor and adjusts the release timing and printing initiation accordingly. This dynamic control enables continuous printing and high throughput while maintaining a single printer and simple system architecture.
Data Source
AI summary
A system and method therefor for use with a conveyor carrying cartons inbound to a printing area and outbound away from the printing area. The system has a printer located in the printing area for printing documents to be inserted into corresponding cartons on the conveyor and a controller for cooperatively controlling operations of the conveyor and the printer based on the positions of the cartons relative to the printer. The controller includes a staging processor for determining when to cause the conveyor to carry the cartons inbound past the printer and when to cause the printer to print the documents. In operation, the controller queues the documents for printing, monitors outbound capacity of the conveyor based on detected positions of the cartons, releases a group of the cartons inbound on the conveyor in response to the outbound capacity reaching a predetermined threshold, and initiates printing the queued documents corresponding to the cartons in the group when the group of the cartons is released.