Restrictions for the Barcode Check Function

Common Restrictions for the Barcode Check Function

• When the product is powered on while the barcode checker is connected, the barcode checker is also powered on and emits a laser light. Be sure to keep the laser away from your eyes.

•	The reading accuracy of barcodes or 2D codes is affected by label conditions (label curl, print quality, etc.) and the usage environment (ambient light, temperature, humidity, etc.), and readability is not guaranteed. Be sure to do a test read with the barcode checker you will use in advance.

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The types of paper that can be used are the same as the product specifications. If the label color is silver or laminated, however, it makes it difficult for the barcode checker to read the barcode, as the light of the barcode checker may cause a reflection on the label surface. Be sure to do a test read carefully in advance.

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Design the label layout so that barcodes or 2D codes do not remain within the scanning range of the barcode checker at the completion of printing. If the barcode of the previous label remains in the scanning range at the start of the next printing, the barcode checker may read the same barcode twice.

(1) Media feed direction

(2) Print head position

•	Barcodes printed within the following range from the print end position cannot be read and a reading error inevitably occurs. The range varies depending on the model or media sensor being used. As the following table is only for a reference, be sure to do a test read carefully in advance.

Media Sensor Type	S84NX	S86NX
Gap	6.5 mm (0.26")	8.7 mm (0.34")
I-mark	9.5 mm (0.37")	11.7 mm (0.46")

•	The barcode check is not performed if the position at which the check starts is detected after the label feeding begins to stop. Define the label layout and position at which the check starts by keeping in mind that the distance required for stopping is proportional to the print speed.

•	Printed barcodes or 2D codes can be read only with a size at which their entire pattern is within the scanning range of the barcode checker. A reading error may occur depending on the print position.

•	When powering on the product, do not connect or disconnect the barcode checker. The product may not operate properly.

•	The barcode data that can be read for 1 item is up to 200 bytes per barcode and up to 200 Kb in total.

Restrictions When Using GFS4170

•	It keeps emitting a laser light while the product is powered on. To turn off the laser light, power off the product.

Restrictions When Using GFS4470

•	By the double-reading prevention function, the barcode checker may not read barcodes that are printed successively if they are within the readable area. Adjust the print position so that same barcodes are not within the readable area.

•	When printing composite symbols that use GS1 DataBar, the read data and print data never match if the barcode data is 16 digits or less. A comparison error occurs in comparison mode.

•	Though "\" (0x5C) specified in MAXI code, print data should be read as "\\" in the specifications. However, it may not be read as such, depending on the following data. For example, "\A" specified in print data should be read as "\\A" in the specifications, but it is actually read as only "A".

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Related Topics

Basic Specifications of the Barcode Check Function

Operations When the Barcode Check Function Is Enabled

Error Message 1078 (Barcode Reading Error)

Error Message 1079 (Barcode Reading Error (Checking Start Position Abnormality))

Error Message 1080 (Barcode Comparison Error)

[Start Position]