METHOD AND SYSTEM FOR MANAGING PRINTER PAPER CONDITIONS
A method and system for managing printer paper conditions is provided. The method includes monitoring states of a paper source in a point-of-sale (POS) printer by a light source and sensor mounted in the paper source, the light source emitting light. A low paper state is determined when a low reflection is detected by the sensor, the low reflection resulting from light reflecting off of a colored portion of a paper roll when the light source and the sensor are positioned on the same side of the paper roll. The colored portion is provided along a margin at the low end of the paper roll. The method further includes tracking a motor step count of the paper source in response to the low paper state to determine a current amount of paper remaining on the paper roll, and transmitting a notification to a system that manages the POS printer informing the system of the current amount of paper remaining.
1 . A method for managing printer paper conditions, comprising:
monitoring states of a paper source in a point-of-sale (POS) printer by a light source and sensor mounted in the paper source, the light source emitting light, wherein:
a low paper state is determined when a low reflection is detected by the sensor, the low reflection resulting from light reflected off a colored portion of a paper roll when the light source and sensor are positioned on the same side of the paper roll, the colored portion provided along a margin at the low end of the paper roll;
a low paper state is determined when no light reception is detected by the sensor, the no reception resulting from a lack of light passing through a colored portion of a paper roll when the light source and sensor are on opposing sides of the paper roll, the colored portion provided along a margin at the low end of the paper roll;
tracking a motor step count of the paper source in response to the low paper state to determine a current amount of paper remaining on the paper roll; and
transmitting a notification to a system that manages the POS printer informing the system of the current amount of paper remaining;
wherein detection of paper states is accomplished using the same sensor.
2 . The method of claim 1 , wherein further, a severe low paper state is determined when the motor step count reaches a pre-defined threshold, the method further comprising at least one of:
transmitting a notification to the system informing the system of the severe low paper condition; and
optionally shutting down the POS printer until a new paper roll is installed.
3 . The method of claim 1 , wherein the paper states include a no paper state; wherein:
the no paper state is determined when no reflection is detected by the sensor and when the light source and the sensor are positioned on the same side of the paper roll, the no reflection resulting from light emitted directly from the light source with no intervening paper from which the light reflects; and
the no paper state is determined when a high light reception is detected by the sensor and when the light source and the sensor are positioned on opposing sides of the paper roll, the high light reception resulting from light emitted directly from the light source to the sensor with no intervening paper to reflect the light.
4 . The method of claim 1 , wherein the paper states include a normal paper state; wherein:
the normal paper state is determined when a high reflection is detected by the sensor and when the light source and the sensor are positioned on the same side of the paper roll, the high reflection resulting from light reflected off of a non-colored portion of a paper roll; and
the normal paper state is determined when a low light reception is detected by the sensor and when the light source and the sensor are positioned on opposing sides of the paper roll, the low light reception resulting from light passing through the paper to the sensor.
5 . The method of claim 4 , further comprising:
resetting the motor step count when the normal paper state is determined.
6 . A system for managing printer paper conditions, comprising:
a networked processing device; and
a paper monitoring application executing on the networked processing device, the paper monitoring application performing a method, comprising:
monitoring states of a paper source in a point-of-sale (POS) printer by a light source and sensor mounted in the paper source, the light source emitting light, wherein:
a low paper state is determined when a low reflection is detected by the sensor, the low reflection resulting from light reflected off a colored portion of a paper roll when the light source and the sensor are positioned on the same side of the paper roll, the colored portion provided along a margin at the low end of the paper roll;
a low paper state is determined when no light reception is detected by the sensor, the no reception resulting from a lack of light passing through a colored portion of a paper roll When the light source and the sensor are positioned on opposing sides of the paper roll, the colored portion provided along a margin at the low end of the paper roll;
tracking a motor step count of the paper source in response to the low paper state to determine a current amount of paper remaining on the paper roll; and
transmitting a notification to a system that manages the POS printer informing the system of the current amount of paper remaining;
wherein detection of paper states is accomplished using the same sensor.
7 . The system of claim 6 , wherein further, a severe low paper state is determined when the motor step count reaches a pre-defined threshold, the method further comprising at least one of:
transmitting a notification to the system informing the system of the severe low paper condition; and
optionally shutting down the POS printer until a new paper roll is installed.
8 . The system of claim 6 , wherein the paper states include a no paper state; wherein:
the no paper state is determined when no reflection is detected by the sensor and when the light source and the sensor are positioned on the same side of the paper roll, the no reflection resulting from light emitted directly from the light source with no intervening paper from which the light reflects; and
the no paper state is determined when a high light reception is detected by the sensor and when the light source and the sensor are positioned on opposing sides of the paper roll, the high light reception resulting from light emitted directly from the light source to the sensor with no intervening paper to reflect the light.
9 . The system of claim 6 , wherein the paper states include a normal paper state, wherein:
the normal paper state is determined when a high reflection is detected by the sensor and when the light source and the sensor are positioned on the same side of the paper roll, the high reflection resulting from light reflected off of a non-colored portion of a paper roll; and
the normal paper state is determined when a low light reception is detected by the sensor and when the light source and the sensor are positioned on opposing sides of the paper roll, the low light reception resulting from light passing through the paper to the sensor.
10 . The system of claim 9 , wherein the paper monitoring application further performs: resetting the motor step count when the normal paper state is determined.