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The difference between the problem solving method of the handheld laser marking machine and other marking machines

by:Leadtech Coding     2022-03-16

Common solutions for laser marking machine faults.

1. The reason why the laser output power is weak for new equipment that has not been used for a long time: .

① Whether the laser output power measured at the factory reaches the technical index.

② Whether the adjustment accuracy of the resonator meets the requirements.

③Whether there is light leakage in the total reflection film.

④ Whether the insertion loss of the acousto-optic switch is within the specified range.

2. After the laser marking machine is used for a period of time, the reason why the laser output power of the laser decreases:.

①Whether the laser resonator has changed: fine-tune the resonator mirror to make the output spot Z. good.

② Whether there is any contamination of the total reflection and the output diaphragm.

③The acousto-optic crystal is offset or the output energy of the acousto-optic power supply is low: adjust the position of the acousto-optic crystal.

④ Whether the temperature difference between the water temperature setting of the cooling water tank and the ambient temperature exceeds 5°C.

⑤Whether the service life of the krypton lamp has expired.

⑥The laser entering the galvanometer is off-center: adjust the laser.

⑦If the current is adjusted to about 20A and the photosensitive intensity is not enough: the krypton lamp is aging, replace it with a new one.

3. The laser output power of the laser marking machine is normal, but the laser beam cannot play the role of marking: .

① Whether the adjustment of the optical path system is accurate.

②Whether the acousto-optic switch can function as a switch.

③D/A card controls whether the laser marking machine number reaches 5V with the sound and light output.

4. The reason why the acousto-optic switch of the laser marking machine can not play the role of switching the laser:.

①Whether the RF output power of the acousto-optic power supply is normal.

②Whether the switches of the power supply are in the correct position.

③Is the connection of the radio frequency line reliable?

④Is there any contamination on the light-passing end face of the Q switch?

5. The reason why the laser marking machine cannot reach the expected marking depth: .

①Whether the laser output power meets the requirements.

②Whether the turn-off power of the acousto-optic switch meets the requirements.

③ Whether the optical path adjustment is accurate.

④ Whether the position and direction of the beam expander are accurate.

⑤ Whether the lens surface is polluted.

⑥Whether the workpiece surface is on the focal plane.

⑦Whether the output DC voltage 28V of the laser power supply drops, causing the laser output power to drop.

From the functional structure, laser printers are divided into two parts: print engine and print controller. The print engine of laser printers is composed of Canon, Minolta, Xerox, Brother, Samsung, Hitachi A few engine manufacturers provide it, while printer manufacturers buy or customize print engines from engine manufacturers, and design controllers and print drivers according to the engine to complete the design and production of the entire printer. Reasons for the secondary market of print engines and printers in the field of laser printers.

In the laser printing machine, the function of the print controller is to communicate with the computer through the interface or network, receive the control and printing information sent by the computer, and transmit the status of the printer to the computer at the same time. , the print engine transfers the received print content to the printing paper under the control of the print controller, so the performance and quality of the print controller and print engine affect the performance and quality of the entire printer, which is the same An important reason for the performance difference of the laser printing machine products of the engine.

All print controllers are fully functional computers, which basically include four basic functional modules: communication interface, processor, memory and control interface. High-end models are also equipped with large-capacity memory such as hard disks. The communication interface is responsible for data communication with the computer. The memory is used to store the received print information and interpret the generated bitmap image information. The control interface is responsible for the laser scanner and motor in the engine. The control of other components and the control of the input and output information of the printer panel, and the processor is the core of the controller, all data communication, image interpretation and engine control work are completed by the processor.

Due to the different control methods and control languages u200bu200bof the IC automatic laser marking machine adopted by each printer, the configuration and performance requirements of the print controller are also different, such as the use of PCL and Postscript Language-based printers, because the standard page description language is used between the computer and the printer to transmit print information, the printer should interpret the print information received from the computer using the standard language description into raster bits that the print engine can receive. Image information, the performance and memory size of the print controller directly affect the performance of the entire printer, so such a printer has very high requirements on the speed and memory size of the processor in the print controller.


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