To print a PDF, you need a printer that can print graphics. Most can, but you also need to know how to send pictures. This flutter_esc_pos* package can communicate to ESC/POS printers, but not all of them are compatible.

Hi, Here I am using Epson - TMT-T88V model.
import 'package:flutter/material.dart';
import 'dart:typed_data';

import 'package:flutter/material.dart';
import 'package:flutter_esc_pos_network/flutter_esc_pos_network.dart';
import 'package:flutter_esc_pos_utils/flutter_esc_pos_utils.dart';
import 'package:image/image.dart' as im;
import 'package:pdf/pdf.dart';
import 'package:pdf/widgets.dart' as pdf;
import 'package:printing/printing.dart';

extension PdfRasterExt on PdfRaster {
im.Image asImage() {
return im.Image.fromBytes(width, height, pixels);
}
}

const printerIp = '192.168.0.239';
const printerDpi = 50.0;

void main() {
runApp(const MyApp());
}

class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);

@OverRide
_MyAppState createState() => _MyAppState();
}

class MyAppState extends State {
@OverRide
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Test'),
),
body: PdfPreview(
build: () => _buildDocument(),
allowPrinting: false,
canChangePageFormat: false,
actions: [
PdfPreviewAction(
icon: const Icon(Icons.print),
onPressed: (context, build, pageFormat) => printTicket(),
)
],
),
),
);
}

Future _generateTicket() async {
final pdf1 = pdf.Document();

pdf1.addPage(
  pdf.Page(
    orientation: pdf.PageOrientation.landscape,
    pageFormat: PdfPageFormat.roll80,
    build: (context) => pdf.Center(
      child: pdf.Text(
        'KARTHI',
        style: pdf.TextStyle(
          fontWeight: pdf.FontWeight.bold,
          fontSize: 20,
        ),
      ),
    ),
  ),
);

return pdf1.save();

}

Future _buildDocument() async {
final doc = pdf.Document();

doc.addPage(
  pdf.Page(
    orientation: pdf.PageOrientation.landscape,
    pageFormat: PdfPageFormat.roll80,
    build: (context) => pdf.Center(
      child: pdf.Text(
        'KARTHI',
        style: pdf.TextStyle(
          fontWeight: pdf.FontWeight.bold,
          fontSize: 20,
        ),
      ),
    ),
  ),
);

/* doc.addPage(
pdf.Page(
pageFormat: PdfPageFormat.roll80,
build: (context) => pdf.Center(
child: pdf.PdfLogo(),
),
),
);*/

return await doc.save();

}
Future printTicket() async {
final printer = PrinterNetworkManager('192.168.0.239');
final res = await printer.connect();

if (res != PosPrintResult.success) {
  throw Exception('Unable to connect to the printer');
}

final profile = await CapabilityProfile.load();
final generator = Generator(PaperSize.mm80, profile);
var ticket = <int>[];

await for (var page in Printing.raster(await _generateTicket(), dpi: printerDpi)) {
  final image = page.asImage();
  ticket += generator.image(image);
  ticket += generator.feed(1);
  ticket += generator.cut();
}

printer.printTicket(ticket);
printer.disconnect();

}
/*Future _print() async {
final printer = PrinterNetworkManager(printerIp);
final res = await printer.connect();

if (res != PosPrintResult.success) {
  throw Exception('Unable to connect to the printer');
}

final profile = await CapabilityProfile.load();
final generator = Generator(PaperSize.mm80, profile);
var ticket = <int>[];

await for (var page
in Printing.raster(await _buildDocument(), dpi: printerDpi)) {
  final image = page.asImage();
  ticket += generator.image(image);
  ticket += generator.feed(1);
  ticket += generator.cut();
}

printer.printTicket(ticket);
printer.disconnect();

}*/
}

I have tried it. Image is printing perfectly. But when I am printing any text, it's just printing a blank page. I have tried with multiple fonts.