CCD SCANNERS

LINEAR IMAGE SCANNERS

LASER SCANNERS

BLUETOOTH SCANNERS

2D SCANNERS

OMNI-DIRECTIONAL SCANNERS

CCD Scanners have no moving parts. Lasers have oscillating mirrors that are subject to wear and mechanical failure.

CCD Scanners use LEDs for illumination. LEDs have about ten times the life of laser diodes. Their illumination level is safe for direct viewing, so safety precautions are not necessary.

CCD Scanners are generally smaller, lighter and less expensive than laser scanners.

Laser scanners use a laser beam as the light source and typically employ either a reciprocating mirror or a rotating prism to scan the laser beam back and forth across the bar code. A photodiode is used to measure the intensity of the light reflected back from the bar code. In LASER scanners, the light emitted by the reader is tuned to a specific frequency and the photodiode is designed to detect only this modulated light of the same frequency.

The newest type of bar code reader currently available are linear image barcode readers that use a small video camera to capture an image of a bar code. The reader then uses sophisticated digital image processing techniques to decode the bar code. Video cameras use the same CCD technology as in a CCD bar code reader except that instead of having a single row of sensors, a video camera has hundreds of rows of sensors arranged in a two dimensional array so that they can generate an image.

One of the main advantages of Bluetooth technology is the fact that it is very standardized which guarantees a high level of interoperability.Two Bluetooth devices communicating together with the same "profile" will understand each other without prior configuration, even if the devices are of different makes.

Comparison with other wireless technologies (WiFi, 433MHz)

WiFi is not suitable for mobile use. The energy consumption required for WiFi devices is too high to be provided by a lightweight, portable battery.

These devices are continuously emitting multi-directional light beams to maximize the reading of a bar code regardless of the orientation of the bar code to the scanner to free the user to present the bar code in any orientation. They sit on a counter, or they sit on a stand that sits on the counter. Items are passed a few inches in front of the scanner to get a successful read.

There is a large variety of 2D symbologies. The most common are matrix codes, which feature square or dot-shaped modules arranged on a grid pattern. 2D symbologies also come in a variety of other visual formats. 2-D symbologies cannot be read by a laser as there is typically no sweep pattern that can encompass the entire symbol.

FOR FURTHER INFORMATION ON THE FOLLOWING BRANDS PLEASE CALL JRC 1300 66 22 71