2.1 Raw Printing ESC/POS Error

[vian.d...@gmail.com]

When i'm trying to test Raw Printing with ESC/POS language with qz example, i got this error when i check on console.log browser.

The code i used, i got it from here 2.1-Raw-Printing escpos

var config = qz.configs.create("LX-300");

       var data = [

           { type: 'raw', format: 'image', flavor: 'file', data: 'assets/img/image_sample_bw.png', options: { language: "escp", dotDensity: 'double' } },

           '\x1B' + '\x40',          // init

           '\x1B' + '\x61' + '\x31', // center align

           'Beverly Hills, CA  90210' + '\x0A',

           '\x0A',                   // line break

           'www.qz.io' + '\x0A',     // text and line break

           '\x0A',                   // line break

           '\x0A',                   // line break

           'May 18, 2016 10:30 AM' + '\x0A',

           '\x0A',                   // line break

           '\x0A',                   // line break    

           '\x0A',

           'Transaction # 123456 Register: 3' + '\x0A',

           '\x0A',

           '\x0A',

           '\x0A',

           '\x1B' + '\x61' + '\x30', // left align

           'Baklava (Qty 4)       9.00' + '\x1B' + '\x74' + '\x13' + '\xAA', //print special char symbol after numeric

           '\x0A',

           'XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX' + '\x0A',      

            '\x1B' + '\x45' + '\x0D', // bold on

           'Here\'s some bold text!',

           '\x1B' + '\x45' + '\x0A', // bold off

           '\x0A' + '\x0A',

           '\x1B' + '\x61' + '\x32', // right align

           '\x1B' + '\x21' + '\x30', // em mode on

           'DRINK ME',

           '\x1B' + '\x21' + '\x0A' + '\x1B' + '\x45' + '\x0A', // em mode off

           '\x0A' + '\x0A',

           '\x1B' + '\x61' + '\x30', // left align

           '------------------------------------------' + '\x0A',

           '\x1B' + '\x4D' + '\x31', // small text

           'EAT ME' + '\x0A',

           '\x1B' + '\x4D' + '\x30', // normal text

           '------------------------------------------' + '\x0A',

           'normal text',

           '\x1B' + '\x61' + '\x30', // left align

           '\x0A' + '\x0A' + '\x0A' + '\x0A' + '\x0A' + '\x0A' + '\x0A',

           '\x1B' + '\x69',          // cut paper (old syntax)

           // '\x1D' + '\x56'  + '\x00' // full cut (new syntax)

           // '\x1D' + '\x56'  + '\x30' // full cut (new syntax)

           // '\x1D' + '\x56'  + '\x01' // partial cut (new syntax)

           // '\x1D' + '\x56'  + '\x31' // partial cut (new syntax)

           '\x10' + '\x14' + '\x01' + '\x00' + '\x05',  // Generate Pulse to kick-out cash drawer**

                                                           // **for legacy drawer cable CD-005A.  Research before using.

           ];      

qz.print(config, data).catch(function(e) { console.error(e); });

[Tres Finocchiaro]

I tested your code and I cannot reproduce.  What version of QZ Tray are you using?  I ask because that's a 2.1 tutorial.

The 2.0 tutorial is here: https://github.com/qzind/tray/wiki/2.0-Raw-Printing#escpos

That said, it still should work with 2.0. The only difference is the addition of the "flavor" to the data object. 

I'm stumped by your error, I've never seen it before.  Any technical details or more background information to reproduce is greatly apprecaited.

JSONArray[1] is not a JSONObject

- Tres.Fin...@gmail.com

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[Lite Finocchiaro]

The LX-300 uses a slightly different version of this language, named ESCP2 in multiple programming guides.

Please use an ESCP2 programming guide to write your code, as our ESC/POS example was written for use with Epson thermal receipt printers, like the TM-T88V 

Regards,

Lite

VP, QZ Industries

--

[vian.d...@gmail.com]

at first i'm gonna reinstall the QZ first, by the way my version of QZ is 2.1.0 . If that's not working, may be because of the language version for LX-300 is diffrent. Thanks for the info guys,

[Tres Finocchiaro]

Just to clarify.. The language is very important for correct output, but won't cause the original error.

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[vian.d...@gmail.com]

When i remove this line

{ type: 'raw', format: 'image', flavor: 'file', data: 'assets/img/image_sample_bw.png', options: { language: "escp", dotDensity: 'double' } }

the code works, and if i'm trying to print the image alone without the ESC language its working too. But When combine the escp and the image is not working. I'm still using my 2.1.0 Qz

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[Tres Finocchiaro]

Might be a duplicate of https://github.com/qzind/tray/issues/462.

Can you snag the latest qz-tray.js from GitHub?

https://github.com/qzind/tray/blob/2.1/js/qz-tray.js

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[vian.d...@gmail.com]

Still the same problem,

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[Tres Finocchiaro]

Using the latest 2.1 version, copying and pasting the code into sample.html (changed "data" to "printData"), the example in this email works on my machine, the error doesn't happen.

This leads me to believe that the error is caused by a bug that's been fixed since you installed QZ Tray.

... but if you're using ESCP/2, you shouldn't need 2.1 at all.  You should be able to get up and running with 2.0.

If you cannot provide the steps to reproduce in another environment, we can't dive into the error.

- Tres.Fin...@gmail.com

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