Printing Apparatus Blade Position Sensor Actuation
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Solution Overview
Problem
Current printing apparatuses for dispensing multiple printed documents, such as tickets or receipts, from a strip are limited in speed, particularly in high-demand applications like lottery or betting terminals, where rapid and efficient separation and stacking are necessary.
Innovation Solution
A printing apparatus with a driven cutting device and sensor-activated actuator system that allows the cutting device to return to a non-occluded position before the next document is printed, enabling the strip to advance and accelerate the dispensing of subsequent documents by moving the printed documents to a stacking zone or retracting the strip for new printing, thus anticipating the next printing operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cutting device separates documents sequentially after each print cycle, then the cutting operation is simple and reliable, but the dispensing speed is limited by the cycle time
Solution Approach 1:
The patent applies preliminary action by detecting when the blade obstructs the path and activating the actuator in advance, before the blade returns to the non-occluded position. This anticipatory activation allows the strip to advance and the next document to be printed without waiting for the complete cutting cycle to finish, thereby reducing downtime between print cycles and increasing dispensing speed
2Speed
If the actuator is activated only after the blade returns to non-occluded position, then the cutting operation is complete and safe, but the next print cycle must wait causing speed limitation
Solution Approach 1:
The patent uses feedback from detecting means that monitor the blade position and emit a signal when the blade obstructs the path. This feedback mechanism allows the control system to activate the actuator at the precise moment when it is safe to do so (when obstruction occurs), coordinating the strip advancement with the cutting operation status. This ensures both safety of the cutting operation and maximization of print cycle speed
Data Source
AI summary
A printing method and apparatus are disclosed, in which a printed document is separated from a continuous strip of paper by a cutting device having a movable blade that can adopt a rest position, in which the blade is retracted to leave free a passage for inserting the strip in a cutting zone, and at least one cutting position, in which the blade is advanced to obstruct the passage, with sensor means that is able to indicate when the blade is in the two positions.