uses
  Printers;    var
  MyFile: TextFile;
begin
  Printer.PrinterIndex := 2;
  AssignPrn(MyFile);
  Rewrite(MyFile);
  Printer.Canvas.Font.Name := 'Courier New';
  Printer.Canvas.Font.Style := [fsBold];
  Printer.Canvas.Font.PixelsPerInch:= GetDeviceCaps(Printer.Canvas.Handle, LOGPIXELSY);
  Writeln(MyFile, 'Print this text');
  System.CloseFile(MyFile);
end;

uses
  Printers;
   
begin
  Printer.PrinterIndex := 2;
  Printer.BeginDoc;
  Printer.Canvas.Font.Name := 'Courier New';
  Printer.Canvas.Font.Style := [fsBold];
  Printer.Canvas.Font.PixelsPerInch:= GetDeviceCaps(Printer.Canvas.Handle, LOGPIXELSY);
  Printer.Canvas.Textout(10, 10, 'Print this text');
  Printer.EndDoc;
end;