Summary of APPLICATION OF MICROCONTROLLER IN AUTO DETECT DOOR OPEN AND PAPER JAM ERROR using pic microcontoller
Microcontrollers, invented by Intel in the 1980s, run programmed instructions (e.g., Assembly, BASIC) to control intelligent operations in devices like printers. This article explains microcontroller applications for auto-detecting printer door-open and no-paper errors using an optical switch (IR emitter and phototransistor), a controller, and a DC motor. The IR LED emits light; when the door is closed or paper presses the obstacle rubber down, the phototransistor receives the IR signal, allowing the controller to detect normal status; blocking the light signals door open or no paper.
Parts used in the Auto Detect Door Open and Paper Jam Error Project:
- Microcontroller (e.g., AT89, PIC16F, 68H)
- Optical switch
- Infrared emitter (IR LED)
- Phototransistor (or photodiode receiving 3.3V–5V)
- DC motor (paper feed roller drive)
- Obstacle rubber (mechanical actuator)
- Roller rubber (paper contact)
- Printer door assembly
- Power supply (3.3V–5V for optical sensor)
Microcontroller was invented by Intel sometimes in the 80s ever since that invention other Electronics companies such as Atmel, Microchip and Motorola etc have manufactured different brands of Microcontroller like AT89, PIC16F and 68H
All microcontrollers performs specific task based on the set of instructions giving to them through a process called Programming language. Example of programming language includes Assembly and Basic Language to mention few.
The major or crucial important of Microcontroller is in the area of intelligent operation hence they are use in control systems. Nowadays Microcontroller are use in equipment like Washing Machine, Printer, photocopier, Cars, Aircraft, Robot, plasma TV, Computers etc
This Article is looking at the role of microcontroller Application in auto detect door open or No paper error in printer like HP DESKJET 5740 no Paper and other Brand open Door error
Both printers contain an optical switch ,controller and a dc motor to drive the paper rollers.
The optical switch is made up of infrared emitter and Photo transistor.
The photodiode received about 3.3V – 5v dc supply and emits an infrared signal. The light emitted by the IR LED could be blocked, from reaching the phototransistor base for the following reasons:
- When the printer door is closed it pushes the obstacle rubber down, as shown in the diagram above
- When the printer is loaded with printer paper, the roller drives through the roller rubber and slide it over the obstacle rubber, thereby pushing it down, and finally the paper ejected at the collecting tray of the printer.
For more detail: APPLICATION OF MICROCONTROLLER IN AUTO DETECT DOOR OPEN AND PAPER JAM ERROR
- What components detect door open or no paper in a printer?
An optical switch composed of an IR emitter and a phototransistor, a microcontroller, and a DC motor drive system detect door open or no paper conditions. - How does the optical switch work to detect paper or door status?
The IR LED emits light to the phototransistor; when the light reaches the phototransistor the controller reads normal status, and when the light is blocked it signals door open or no paper. - What causes the phototransistor to stop receiving IR light?
The phototransistor is blocked when the printer door is open or when there is no paper pushing the obstacle rubber down, preventing IR light from reaching its base. - What voltage powers the photodiode or phototransistor circuit?
The photodiode or phototransistor receives about 3.3V to 5V DC supply. - How does paper placement affect the obstacle rubber?
When paper is loaded, the roller and roller rubber slide over the obstacle rubber and push it down, allowing IR light to reach the phototransistor. - Which microcontrollers are mentioned as examples for such applications?
The article mentions AT89, PIC16F, and 68H families as examples of microcontrollers. - What role does the DC motor play in the detection system?
The DC motor drives the paper rollers that move paper and actuate the obstacle rubber position during printing. - Why are microcontrollers important in this detection application?
Microcontrollers execute programmed instructions to interpret sensor signals and control the printer actions for intelligent detection of door open and no-paper errors.
