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This section introduces useful laser marker functions that might not be well known.

Functions vol.1

Q49Can 2D codes such as DataMatrix and QR Codes be printed?

In addition to linear barcodes, a laser marker can also mark 2D codes.
The following 2D codes can be printed:
QR Codes/Micro QR Codes/DataMatrix/DataMatrix (ECC200) The "Marking Builder 2" software makes it easy to create almost any type of barcode.

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Q50Can laser markers operate without a PC?

Yes, a laser marker can be operated with an optional touch panel. It is also possible to operate a laser marker with a monitor and mouse in the same manner as the touch panel. These methods are very useful when it is difficult to use a PC for on-site operation or when the laser marker is programmed infrequently.

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Q51Can laser markers be used for material processing?

Yes, in addition to printing, laser markers can also be used for some processing applications.
Major processing applications for a laser marker:

  • - Precision cutting
  • - Deburring resin workpieces
  • - Peeling away surface coating films

The increase in demand for implementing laser markers for processing is due to the fact that a laser marker can accurately scan wide areas and is less expensive than mechanical processors.


CO2 Laser Marker ML-Z9500 Series

YVO4 Laser Marker MD-V9900 Series

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Q52How many programs can be registered?

Up to 2,000 programs can be registered. It is possible to pre-set marking contents/conditions for each item, which requires only switching the registered data when changing to a new product to be marked.
A few ways to easily switch between programs are:

  • - Switch programs using the PC software/touch panel.
  • - Switch programs by using the I/O terminal block.
  • - Automatically switch programs by scanning barcodes.
  • - Switch programs via serial communications

Among these examples, the use of barcodes has been increasing in popularity because it allows for accurate and easy switching between products to be marked.

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Functions vol.2

Q53Will the laser diode burn out if the power is left on?

KEYENCE’s laser markers use the laser diode (LD) only when it is marking. This is because the laser marker is equipped with the Auto Power-Saving (APS) function, which automatically lowers the level of the LD light source when not marking. Since only the current is lowered, the power of the LD is not turned off and the system can return to full marking capacity almost instantly.

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Q54How can I prevent settings from being accidentally changed while the laser is operating?

The laser marker has a built-in "Key Lock" function.
By password protecting the key operations so that only administrators can change settings, accidental changes can be prevented. In addition, it allows for individual locks by item, which makes it possible to choose which operations are locked.

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Q55How can I prevent the laser marker from receiving false inputs due to noise on the signal lines?

Set the laser marker to ignore input pulses under a certain time duration. Most noise signals do not remain constant for a long period of time. (Up to 10 ms)

* Precautions should be taken to eliminate the source of noise on communication lines.

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Q56How can I ensure that only a certain number of products are marked?

The “Counter settings” and “Counter output” on the terminal block can be used to verify exactly how many products are marked. Set the desired number of products to be marked in the "Counter settings" as the "Final value". This makes it possible to output a signal from the laser marker when the final value has been reached. This output can then be used to stop production, sound an alarm, etc.

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Q57How can I tell exactly how many hours the laser marker has been in operation?

It is possible to check the total operating time in the Maintenance parameters.

The laser marker keeps track of operating hours as well as the number of times the laser has performed marking operations. These values can also be used to account for daily operations. The total repetitions can be programmed or reset as shown below.


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Q58What data formats can be input to the laser to mark designs and logos?

BMP, JPG, PNG, TIF, as well as CAD data can be imported to the laser marker to create almost any design or logo imaginable.

Brilliant photographic marking with ease

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Q59Is it possible to mark on moving targets?

Yes. The laser marker is able to mark on moving targets by adjusting the position of the laser to follow the product.
This functionality can be set automatically for production lines moving at a constant rate and also for those that vary in speed. The scan speed can be optimized through the Test Marking settings, taking the guess work out of achieving the best possible results.

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Q60What is the fastest speed possible when marking on moving targets?

This depends on the marking content and certain marking conditions. The fewer number of characters; the faster a laser marker can print. This also applies to the size and thickness of the font or design. Optimal speed must be set on an individual basis.

*As mentioned above, individual tests are necessary to determine that the laser can mark on moving targets.
Please contact your nearest KEYENCE sales office for further details.

High speed marking on the neck of PET bottles

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Functions vol.3

Q61How can I mark on extruded products at constant intervals if the line speed is not constant?

The laser maker and the line speed can be synchronized by inputting the line speed as a pulsed signal. An encoder is installed on the line to monitor the current line speed. The output pulses of the encoder are input to the laser marker controller so the marker can adjust for changes in line speed.

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Q62How many TrueType fonts are available for marking?

Since TrueType fonts are read from TTF files on a PC, their use completely depends on the PC. By registering the TrueType font that you want to use, it can be used.


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Q64If a time stamp is marked on each product in a pallet, what time will be marked if the time changes during marking?

The answer is … “Actually A or B can be selected.”
When the acquisition timing is set to “By trigger", the printing for the first product is applied to all the remaining products on the pallet. (See Example A)
When the acquisition time is set to "Each Marking", the time is acquired when printing each product on the pallet and the printing changes as the time changes. (See Example B)

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