JPS594356Y2 - Barcode reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a barcode reading device that optically reads barcodes, and particularly relates to the protection of transparent glass used in a reading window.

2. Description of the Related Art Recently, barcode reading devices that read tag cards composed of barcodes have been put into practical use in order to save labor in cashier operations at stores, supermarkets, and the like.

An example of the use of a barcode reading device that reads barcodes from below will be briefly described with reference to FIG.

When the cashier operator 3 places the product 2 with the barcode pasted on the reading window (not shown) on the barcode reader 1,
The barcode of the product is read and displayed on the register 4.

The products that have been read are placed in the basket 5.

In barcode reading devices, especially those that read barcodes from below an item, a transparent glass must be installed in the reading window for the reading section.

However, the products that can be scanned include bottles,
There are also hard objects such as cans, and when these objects repeatedly rub against the reading window, the transparent glass can become scratched over a long period of time.

However, in such barcode reading devices, the narrow width information of the barcode is optically read through the transparent glass of the reading window, so if the glass of the reading window is scratched, the scratches may cause diffraction or lens distortion. Phenomena such as effects may occur and cause misreading.

Further, if a bottle or a can is dropped onto the transparent glass, there is a risk that the transparent glass will be damaged.

In such an optical reading device, the reading window glass is manufactured to be airtight in order to protect the inside from dust and dirt, and it is not easy to convert this glass.

If you want to replace this glass, you will have to stop the lid for a long time.

The present invention overcomes the above drawbacks.

The structure of the present invention will be explained with reference to FIG.

A transparent glass 8 is attached to a reading window 10 of a box 11 of the barcode reader, and the transparent glass 8 is fixed by a holding plate 7.

A reading sensor 6 is attached below the reading window 10.

In the present invention, an elastic transparent sheet 9 is placed on the transparent glass 8.
For example, it is covered with a vinyl chloride sheet.

The transparent sheet 9 is installed on transparent glass by pasting, inserting, or the like.

Since the transparent sheet 9 has appropriate elasticity, even if a bottle or a can is dropped onto the transparent glass 8 of the reading window 10, the probability of the glass being damaged is extremely small.

Further, even if the transparent sheet 9 becomes dirty, scratched, or damaged due to the friction of the product, it can be easily replaced.

As described above, according to the present invention, it is possible to provide a barcode reading device that not only prevents misreading due to scratches on the transparent glass of the reading window and prevents breakage of the glass but also is easy to maintain when deteriorated.

[Brief explanation of drawings]

Figure 1 is a diagram explaining the operation of the barcode reader, Figure 2 is a diagram explaining the operation of the barcode reading device.
The figure is a sectional view of essential parts of the barcode reading device of the present invention. 6...Reading sensor, 8...Transparent glass, 9...Transparent sheet, 10...Reading window.

Claims (1)

[Scope of utility model registration request] A barcode reading device that optically reads barcodes, characterized in that a transparent glass reading window is covered with an elastic transparent sheet.