How does a handheld laser marker work?

Handheld Laser Markers generate a laser beam typically using a diode pumped solid state (DPSS) or a fiber laser source. The laser beam is then steered onto the surface using a pair of galvanometer scanning mirrors and an F-Theta lens that focuses the laser beam on the object being marked.

How to focus a handheld laser marker?

Most handheld laser markers come with a special bracket that is attached to the galvo scanner and ensures a uniform spacing between the object being marked and the F-theta lens This ensures that laser beam is focused correctly as long as the bracket is firmly held against the object.

How can I position the handheld laser marker precisely?

Many handheld laser markers come with a red guide laser beam that projects either the center or the mark area on the sample. This makes positioning the unit very easy for most applications.

What happens when laser is moved out of focus?

Most handheld laser markers come with safety feature that breaks the circuit when you move the bracket away from the sample. As a result, you simply will not be able to operate the unit unless you intentionally jailbreak the switch. In the event, the laser stays operational, away from the focal plane, the laser spot will become less focused and the beam spot will be enlarged. As a result you will either not be able to mark or will create a faint mark which looks out of focus and does not have high contrast.

What is the depth of the mark made by a handheld laser marker?

The depth of a mark is determined by the laser parameters used to create the mark, the target material as well as the process chosen. Depending on the substrate being marked you might chose engraving or marking. The former creates much deeper marks, while the latter creates smoother appearance. Some materials are better suited for engraving (e.g. wood, some plastics, etc.) while others (e.g. stainless steel, etc.) might be better suited for marking. Also note that marking can also be done using laser marking ink which bond to the substrate by the laser radiation.

What are the smallest and biggest characters that can be marked with handheld laser markers?

The finesse of the laser marks depends on the laser wavelength, laser power, and the type of material on which the laser marking is done. Today’s laser sources offer superb beam quality that allow focusing down sub-100 micrometer scale allowing one to create very fine features and characters. Stainless steel, brass, aluminum are some materials that would allow creating very fine laser marks, whereas glass, thermoset plastics and wood might be less forgiving. The upper limit of the laser mark size is limited by the laser mark area, which depends on the F-Theta lens and the bracket that the unit is equipped with. Larger focal distance lenses usually offer more generous mark area compared with lenses that have shorter focal distance. Most suppliers share the work area in the list of specifications. If in doubt, please inquire.

Is it possible to mark on ceramics using a Handheld Laser Marker?

Yes, laser marking ceramics is possible. Different laser markers, however, are better at marking different ceramic types than others. Laser output parameters and the marking process chosen are important and you might want to consult with the supplier before deciding on a specific unit.

Is it possible to mark company logo or other graphics using a handheld laser marker?

Yes, it is possible to mark various logos and graphic data through this technology. In fact the operating interface of handheld laser markers is very similar to those in other stationary units and allow uploading different types of graphic files.

How can the laser marking time be reduced?

This can be done by increasing the scan speed of laser. However, there is a tradeoff between the quality of the marking and the laser scan speed. With handheld laser marking you will also need to consider the entire process. If you are marking multiple objects, you will want to holistically think about the entire process of moving form on object to another, positioning the bracket on the sample, etc. Because of the manual nature of the process you might find that you spend more time on moving from one object to another rather than on actual marking.

Is it possible to mark products that are coated with oil?

Oil coatings are not a problem in small amounts, but large amounts of oil can block the laser beam. You might also find that the optimal marking parameters (laser output power, speed, resolution) are different than for clean samples. However, if you are using a laser marking ink or a laser marking tape, you will need to ensure that you sample is free from oil and other contaminants.

Can I mark shoes or leather objects using a Handheld Laser Marker?

While it is possible to mark leather and leather objects in general, the bracket on the handheld laser marker requires relatively flat surface to lean on. As a result, you might find difficult to effectively position shoes or other irregular leather objects under the head of the handheld laser marker.

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Handheld Laser Markers

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MINI Hand-held Fiber Laser Marker - Rechargeable

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Sold by: SHENZHEN WISELY LASER MACHINERY CO., LIMITED Ships from: China

Specifications
Laser Source:	Fiber
Laser Output Power:	18 W
Laser Wavelength:	1064 nm (IR)
Laser Operation Mode:	Continuous Wave (CW)
Repetition Rate:	30 kHz

Did You Know?

Handheld laser markers are specialty designed laser marking machines that allow quick and easy marking of large or hard-to-move objects. Handheld Laser Markers are very portable and utilize cable wiring along with a galvo beam steering system to deliver laser radiation to the object being marked. The handheld laser markers typically include a bracket that is permanently attached to the galvo head and ensures a constant focal distance from the galvo mirrors. This makes positioning of the laser head very easy as you don’t have to worry about focusing. Additionally, most models are equipped with a guide diode laser that points to the area being marked and makes the sample positioning a breeze. Handheld laser marking machines are truly portable units ideal for creating permanent high contrast marks on a variety of objects. In the last decade the have found a widespread application in automotive, shipbuilding, military and manufacturing industries to mark barcodes, identification numbers, text logo and graphics. Most units come with several levels of safety protocols to ensure the operator safety during operation.

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Frequently Asked Questions

Handheld Laser Markers, also known as Handheld Laser Engravers are laser machines that allow engraving and marking on hard-to-move, stationary objects. These machines are typically very portable. Some units are battery operated.

Brief Introduction to Handheld Laser Markers

Handheld laser markers have revolutionized the field of industrial marking by offering a compact, efficient, and versatile solution for various applications. These portable devices enable precise and permanent markings on a wide range of materials, making them indispensable tools across numerous industries.

One of the primary advantages of handheld laser markers is their portability. Unlike traditional stationary marking systems, these devices are lightweight and designed for ease of use in diverse settings. This mobility allows operators to bring the marker directly to the workpiece, eliminating the need to transport heavy or cumbersome items to a fixed workstation. Such flexibility is particularly beneficial in industries like aerospace, automotive, and construction, where large components are common.

In terms of performance, handheld laser markers deliver high-quality, permanent marks that are resistant to wear, corrosion, and fading. The precision of laser technology ensures that even intricate designs, serial numbers, barcodes, and logos are rendered with exceptional clarity. This level of detail is crucial for applications requiring strict compliance with traceability and identification standards.

Versatility is another hallmark of handheld laser markers. These devices are capable of marking a variety of materials, including metals, plastics, ceramics, and wood. This adaptability makes them suitable for a broad spectrum of industries, from electronics and medical devices to packaging and consumer goods. The ability to handle diverse materials with a single tool enhances operational efficiency and reduces equipment costs.

Ease of operation is a key feature of modern handheld laser markers. Many models come equipped with intuitive interfaces and preset parameters, allowing users to achieve optimal results with minimal training. This user-friendly design minimizes downtime and facilitates quick integration into existing workflows. Additionally, the ergonomic design of these devices reduces operator fatigue during extended use.

From an environmental standpoint, handheld laser markers offer a clean and sustainable marking solution. Unlike traditional methods that rely on inks, chemicals, or consumables, laser marking is a non-contact process that produces no waste or emissions. This eco-friendly approach aligns with the growing emphasis on sustainable manufacturing practices and reduces the need for costly consumables and maintenance.

Durability and low maintenance are also significant benefits of handheld laser markers. The robust construction and advanced laser technology ensure long operational life spans with minimal upkeep. This reliability translates to lower total ownership costs and consistent performance over time.

In summary, handheld laser markers combine portability, precision, versatility, and environmental friendliness to meet the diverse needs of modern industries. Their ability to deliver high-quality, permanent markings on various materials, coupled with user-friendly operation and low maintenance requirements, makes them a valuable asset for businesses seeking efficient and sustainable marking solutions.