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Handheld Barcode Scanners Blog by Eric Andersen

Eric Andersen
Before going into High Tech Product Management I used my mechanical engineering degree to design a variety of exciting mechanicals including plastic molded injection parts for point of purchase environments. Now, at Cognex, I have primary responsibility for our line of DataMan handheld barcode readers. With the launch of the DataMan 8000 series and the DataMan 500 it is an exciting time for image-based ID readers. As for personal interests, I enjoy traveling, skiing, hockey, tennis, motorcycling, AND READING BARCODES! (but not all at the same time)



 Don't miss this opportunity to learn how advances in Direct Part Mark (DPM), 2-D and 1-D barcode reading technology help you read the most challenging barcodes in the harshest industrial environments.  Register now!
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11-17-2014

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 To help you get a handle on the fundamentals of barcode reading technology, Cognex recently produced an introductory webinar that explains barcode reading technologies that make it possible to achieve maximum read rates and can increase throughput and production efficiency while reducing rework.
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10-28-2014

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Your ID reader has to be able to see the code in order to extract the data. When codes are printed with high contrast – such as a black code printed on a white background – seeing or imaging the code is easy. But when codes are permanently marked on parts using Direct Part Mark (DPM) methods such as dot peen, laser, or electro-chemical etching, the codes are much more difficult to read. DPM codes often require special lighting to get a good image and extract the data out of the code. Historically, DPM-code illumination has been a challenge that required testing different lighting techniques. Once it was determined whether bright-field, dark field or diffuse-on-axis  lighting gave the best results, the proper lighting components would have to be purchased and installed. While this process is not too difficult for a single application, many factories and distribution centers have many different DPM applications and testing and deploying the optimal lighting solution for each one would be a very time-consuming and expensive process. Cognex®  UltraLight® illumination technology solves this problem by combining bright-field, dark field and dome illumination in a single device that can read virtually any code on any part or surface.  Bright-field lighting projects at 90 degrees to the marked surface and then reflects back up to the image to handle high-contrast labels and marks. Dark field lighting projects light at angles of 30 degrees to the marked surface which then reflects back up to the imager. This effect increases the contrast of dot peen or laser marks that are difficult to see in bright-field lighting. Dome lighting, also known as cloudy-day or diffused-off-axis illumination, projects light from many different directions to negate reflections and shadows. This technique provides even lighting across curved reflective surfaces to simulate flat objects. It is easy to take advantage of the power of UltraLight. Out of the box, the DataMan 8600 comes with 4 preset defaults enabled and the device can read a wide variety of codes. Additionally, you can enable extended read attempts mode though the auxiliary button and this enables 4 additional read setups. Of course, you can adjust UltraLight settings manually as well by turning on and off lighting quadrants and adjusting the light intensity. The end result is that you will be able to read a wide range of marked surfaces – dot peen, laser etched, ink jet, on glass, smooth or rough metal and shiny surfaces – without having to determine your lighting needs up front. • Download the Cognex Barcode Reader Product Guide • Get Product Pricing • Contact your local Cognex sale representative

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10-7-2014

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 1DMax+™ and 2DMax+™ technology is now available for DataMan® handheld barcode readers.
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8-15-2013

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 Product launch time again. This week we introduced the DataMan 9500 mobile computer for DPM (direct part mark) code reading applications where you need to have data feedback in hand while you read codes.
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10-25-2012

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 Join me at our next webinar: Introduction to DPM (Direct Part Mark): Implementing a Part Traceability Program on July 24!
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7-12-2012

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 Yes, we can read it.
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11-1-2011

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 In this blog, watch a couple of videos showing how the liquid lens works in action in the DataMan 8000 handheld barcode reader.
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10-26-2011

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 The proliferation of 2-D code symbologies like QR codes and Data Matrix are requiring manufacturers to transition from lasers to imagers for 2-D barcode readers.
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10-19-2011

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