C sharp - Tamaño de letras impresora tmu220d

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.Drawing.Printing;

namespace Impresora_de_prueba

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            printDocument1 = new PrintDocument();

            PrinterSettings ps = new PrinterSettings();

            printDocument1.PrinterSettings = ps;

            printDocument1.PrintPage += Imprimir;

            printDocument1.Print();

        }

        private void Imprimir(object sender, PrintPageEventArgs e)

        {

            Font letra = new Font("Times New Roman",20);

            e.Graphics.DrawString("CONTROL BASCULA", letra, Brushes.Black, 5, 55);

        }

    }

}

FileStream fs = null;

fs = new FileStream(Factu, FileMode.CreateNew);

using (StreamWriter fac = new StreamWriter(fs, Encoding.Default, 512))

{

    fac.WriteLine("" + (char)27 + "C" + (char)33); ---Aquí podrías configurar el tamaño del papel, en tu caso que es contínuo ignora

    fac.WriteLine("" + (char)27 + (char)15 + (char)27 + (char)71);---Aqui pones a comprimida (15) y negrita

    fac.WriteLine("");--Espacio

    fac.WriteLine("");--Espacio

    fac.WriteLine("Escribes algo");

    fac.WriteLine("Otra cosa mas");

    fac.WriteLine("");--Espacio

    fac.WriteLine("" + (char)12);----Al final cierras

    fac.WriteLine(""+(char)27 + (char)18);---Y ponemos a tamaño de letra normal

}