drawing a Barcode without a Barcode font

Richmond Mathewson richmondmathewson at gmail.com
Thu Jul 26 22:47:34 CEST 2018


I was extremely lucky to spend 3 days as the guest of Dr Agnes and Dr 
Jackson He at their home in Long Island about 10 weeks ago:

http://spie.org/profile/Duanfeng.He-10918?SSO=1

Jackson is best described as the "Barcode King".

Richmond.

On 26/7/2018 11:32 pm, Mike Kerner via use-livecode wrote:
> It doesn't surprise me that the optical scanning on the iphone is
> performing differently than the ccd or laser scanner on the conveyor are.
> The laser/ccd is only going to scan in the 600-650 nm wavelength, which is
> both good and bad.  The overall width of the barcode shouldn't matter to
> the scanner within the range that you will be dealing with.  It's not
> unusual for 1D barcodes to be the full width of an AIAG label.
> I just googled "free 2 of 5 font" and found a bunch of entries.  I'm not
> using 2 of 5 so I can't speak to how good any of them are.
>
>
> On Wed, Jul 25, 2018 at 12:26 PM Stephen Barncard via use-livecode <
> use-livecode at lists.runrev.com> wrote:
>
>> "Btw, us tractor tape the correct expression?"
>>
>> I could see how 'conveyor belt' could be easily lost in translation.
>>
>> sqb
>>
>> --
>> Stephen Barncard - Sebastopol Ca. USA -
>> mixstream.org
>>
>> On Wed, Jul 25, 2018 at 8:20 AM, Matthias Rebbe via use-livecode <
>> use-livecode at lists.runrev.com> wrote:
>>
>>> Yes, with iPhone and our USB scanners we are able to scan that “wider”
>>> bars, but i am not sure the highspeed scanners of the carrier can.
>>> The packages are scanned by  high speed scanners while they are carried
>>> and sorted on a“tractor tapes”. Btw, us tractor tape the correct
>> expression?
>>> If the thermal transfer labels are accepted by the carrier then i will
>>> add an option for the user to switch between laser and thermal printing.
>>> The app will use different settings for laser and thermal printing.
>>> So in case the TT printer is broken, they can switch over the laser
>>> printer.
>>>
>>>
>>>
>>>> Am 24.07.2018 um 00:01 schrieb Bob Sneidar via use-livecode <
>>> use-livecode at lists.runrev.com>:
>>>> Out of curiosity, does printed barcodes from the laserwriter still work
>>> with these settings?
>>>> Bob S
>>>>
>>>>
>>>>> On Jul 22, 2018, at 14:18 , Matthias Rebbe via use-livecode <
>>> use-livecode at lists.runrev.com> wrote:
>>>>> I have to add something.
>>>>>
>>>>> As I wrote, we were able to successfully scan the labels. This is true
>>> as long as we print the labels with a laser printer.
>>>>> If we print the labels with a thermo printer (203 dpi) then the code
>>> cannot be scanned with the values i posted before.
>>>>> We  had set the line thickness of the rectangles to 0 and had to
>>> increase the width of the black bars and decrease the width of the clear
>>> ones.
>>>>> So the code below shows the settings which allow us to scan the labels
>>> with a Toshiba B-EV4D and a Zebra LP 2844.
>>>>> put “3" into tNarrow
>>>>> put “6" into tWide
>>>>> set the width of grc "narrowC" to (tNarrow - 2)
>>>>> set the width of grc "narrowB" to (tNarrow -3)
>>>>> set the width of grc "wideC" to tWide
>>>>> set the width of grc "wideB" to tWide
>>>>>
>>>>> Regards,
>>>>>
>>>>> Matthias Rebbe
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