Como imprimir um campo memo via canvas

//Coloque na clásula Uses a unit printers

procedure TForm1.Button1Click(Sender: TObject);
var
i, altura : Integer;
sMemo : String;
begin
With Printer do
begin
Title:= 'Imprimindo memo';
BeginDoc;
With Canvas do
begin
altura := TextHeight('A');
for i := 1 to Memo1.Lines.Count do
begin
sMemo := Memo1.Lines[I];
TextOut(1, (i - 1) * Altura, sMemo);
end;
end;
EndDoc;
end;
end;