Bar code generation & reading

Peter Alcibiades palcibiades-first at
Tue Feb 27 02:02:26 EST 2007

Wonder whether someone with experience of bar codes could help with this - 

My bar code reading app now finally seems to work, and the reader is on a Y 
connection with the keyboard (so called Wedge).  All the commercially printed 
codes I've tried work fine, even the most tiny ones, or ones partly obscured 
by a price sticker.  So its a fine reader (Gryphon).  There is just one last 

Reading codes we generate doesn't work.  I am using kbarcode, saving them as 
pngs, and then printing on a laser printer on ordinary paper. The great merit 
of kbarcode is of course, it is free and will also do label printing.... 

I've used code 39 as well as others, makes no odds.  The size of the png also 
makes no odds.  .

Is there some special magic to generating and printing readable bar codes?


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