A width detecting system includes a sensor-LED array positioned across a path of a media and/or ribbon within a printing apparatus. The LEDs are adapted to produce light directed toward the media and/or ribbon path. The optical sensors are configured to detect the LED light, produce analog signals p
A width detecting system includes a sensor-LED array positioned across a path of a media and/or ribbon within a printing apparatus. The LEDs are adapted to produce light directed toward the media and/or ribbon path. The optical sensors are configured to detect the LED light, produce analog signals proportionate to the received amount of light, and transmit the signals to a signal receiving assembly for processing. Additionally or alternatively, a width detecting system can have an array of LEDs facing an array of sensors in such a way that the media and/or ribbon path is located between the arrays. A method for width detection includes analyzing sensor data to determine one or more transition point between media and no-media sections, and calculating media width. The method can include using sensor data collected for a reflective and/or transmissive sensor arrays, and can be used for media and/or ribbon width detection.
대표청구항▼
1. A width detecting system for a printing apparatus, comprising: a sensor-LED array of optical sensor and LED pairs positioned across a path of a media and/or ribbon within a printing apparatus; anda signal receiving assembly configured to receive and process one or more analog signals from the opt
1. A width detecting system for a printing apparatus, comprising: a sensor-LED array of optical sensor and LED pairs positioned across a path of a media and/or ribbon within a printing apparatus; anda signal receiving assembly configured to receive and process one or more analog signals from the optical sensors;wherein the LEDs are adapted to produce light directed toward the media and/or ribbon path; andwherein the optical sensors are configured to detect the light produced by the LEDs, and produce the analog signals proportionate to the received amount of light. 2. The system according to claim 1, wherein the optical sensors include infrared optical sensors. 3. The system according to claim 1, wherein the sensor-LED array is positioned to face the media and/or ribbon passing above the sensor-LED array. 4. The system according to claim 1, wherein the sensor-LED array is positioned to face the media and/or ribbon passing below the sensor-LED array. 5. The system according to claim 1, wherein the sensor-LED array is disposed proximal to a print mechanism area assembly of the printing apparatus. 6. The system according to claim 1, wherein the sensor-LED array is disposed proximal to a media hanger assembly of the printing apparatus. 7. The system according to claim 1, wherein the sensor-LED array is disposed proximal to a ribbon supply assembly of the printing apparatus. 8. The system according to claim 1, wherein the sensor-LED array is disposed proximal to a ribbon take assembly of the printing apparatus. 9. The system according to claim 1, wherein the signal receiving assembly includes a multiplexer. 10. A printing region detecting device, comprising: a first assembly, having an array of LEDs adapted to produce light directed toward a path of a media and/or ribbon;a second assembly disposed at a predetermined distance away from the first assembly and facing the media and/or ribbon path and the first assembly, having an array of sensors configured to produce analog signals in response to receiving the light produced by the LEDs, the first assembly further including an array of secondary sensors proximal to the array of LEDs and configured to produce analog signals in response to receiving the light produced by the LEDs; andan analog signal receiving assembly configured to receive and process one or more analog signals from the sensors and secondary sensors. 11. The device according to claim 10, wherein the array of sensors includes an array of infrared sensors, and wherein the array of LEDs includes an array of infrared LEDs. 12. The device according to claim 10, wherein the second assembly further includes an array of secondary LEDs proximal to the sensor array and adapted to produce light directed toward a path of a media and/or ribbon. 13. The device according to claim 10, wherein the first assembly is disposed below the media and/or ribbon path, and the second assembly is disposed above the media and/or ribbon path. 14. The device according to claim 10, wherein an amount of the LEDs differs from an amount of the sensors. 15. The device according to claim 10, wherein each LED of the LED array is positioned directly facing a corresponding sensor of the sensor array. 16. The device according to claim 10, wherein the printing region detecting device is disposed proximal to a print mechanism area. 17. The device according to claim 10, wherein the printing region detecting device is disposed proximal to a ribbon supply assembly. 18. The device according to claim 10, further including an analog signal converting means configured to convert the analog signal received from the analog signal receiving assembly into a digital value. 19. The device according to claim 18, further including a processing means configured to analyze the digital signal, and detect a printing region of the media and/or ribbon. 20. A printing region detecting device, comprising: a first assembly, having an array of LEDs adapted to produce light directed toward a path of a media and/or ribbon;a second assembly disposed at a predetermined distance away from the first assembly and facing the media and/or ribbon path and the first assembly, having an array of sensors configured to produce analog signals in response to receiving the light produced by the LEDs, wherein an amount of the LEDs differs from an amount of the sensors; andan analog signal receiving assembly configured to receive and process one or more analog signals from the sensors.
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