Do You Know?
- CCD or Laser Scanner?
There are basically 2 kinds of scanner engine in the market: LASER and CCD engine. The CCD engine is further sub-divide into 2 sub groups; the linear and the area imager.
CCD is the most common technology for image capture in scanners. CCD is a collection of tiny light-sensitive diodes, which convert photons (light) into electrons (electrical charge). These diodes are called photosites. In a nutshell, each photosite is sensitive to light -- the brighter the light that hits a single photosite, the greater the electrical charge that will accumulate at that site.
Most of the users would prefer Laser scanner because the aimer is just a thin red line and user would feel that they can scan more accurately. However that's not the case.
Light is a very important element in reading of barcode. However, too much of something is never good. If the environment has very strong lightning, it will hinder the performance of the laser engine. If the same scenario is applied to the linear CCD engine, the strong lightning will aid in the scanning of barcodes. Now the key point is how much light is too bright much, as far as we can consider, afternoon sunny day should do the trick.
In any case, when there is a compromise of the quality of barcode, the linear CCD scanner will be a better choice. The reason is because linear CCD scanner decoded a larger area of the barcode. The laser scanner only decodes a very thin line almost the same thickness as the aimer. If the label printout is like not good, it will be better to scan it with a linear CCD scanner.
As for area imager, it is a CCD engine that allows users to scan a large area. It is work like a camera. It allows user to scan both 2D and 1D barcode. Hwoever, there is a trade off in the mil size of 1D barcode it can scan. It's performance in scanning 1D barcode can never be as good as a 1D barcode scanner; both laser and linear CCD scanner. Users who buys an area imager scanner is because they need to scan 2D barcodes.
There are basically 2 kinds of scanner engine in the market: LASER and CCD engine. The CCD engine is further sub-divide into 2 sub groups; the linear and the area imager.
CCD is the most common technology for image capture in scanners. CCD is a collection of tiny light-sensitive diodes, which convert photons (light) into electrons (electrical charge). These diodes are called photosites. In a nutshell, each photosite is sensitive to light -- the brighter the light that hits a single photosite, the greater the electrical charge that will accumulate at that site.
Most of the users would prefer Laser scanner because the aimer is just a thin red line and user would feel that they can scan more accurately. However that's not the case.
Light is a very important element in reading of barcode. However, too much of something is never good. If the environment has very strong lightning, it will hinder the performance of the laser engine. If the same scenario is applied to the linear CCD engine, the strong lightning will aid in the scanning of barcodes. Now the key point is how much light is too bright much, as far as we can consider, afternoon sunny day should do the trick.
In any case, when there is a compromise of the quality of barcode, the linear CCD scanner will be a better choice. The reason is because linear CCD scanner decoded a larger area of the barcode. The laser scanner only decodes a very thin line almost the same thickness as the aimer. If the label printout is like not good, it will be better to scan it with a linear CCD scanner.
As for area imager, it is a CCD engine that allows users to scan a large area. It is work like a camera. It allows user to scan both 2D and 1D barcode. Hwoever, there is a trade off in the mil size of 1D barcode it can scan. It's performance in scanning 1D barcode can never be as good as a 1D barcode scanner; both laser and linear CCD scanner. Users who buys an area imager scanner is because they need to scan 2D barcodes.
- 200DPI or 300DPI?
- Linear or 2D barcode?
- Interleaved 2 of 5?
- Inches to mil size?
- Verification?
- DTC or HDP printer?
- YMCK or Pantone color?
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