[NumLock]

Код:

type
  TForm1 = class(TForm)
    WordApplication1: TWordApplication;
    procedure FormCreate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
...
procedure TForm1.FormCreate(Sender: TObject);
var
  OutputFileName: OleVariant;
begin
  WordApplication1.Visible:=True;
  OleVariant(WordApplication1.Documents).Open(FileName:='d:\Downloads\Первобытные люди.doc');
  WordApplication1.ActivePrinter:='Microsoft Office Document Image Writer';
  OutputFileName:='d:\Downloads\Первобытные люди.tif';
  WordApplication1.ActiveDocument.PrintOut(EmptyParam, EmptyParam, EmptyParam,
    OutputFileName,
    EmptyParam, EmptyParam, EmptyParam, EmptyParam, EmptyParam,
    EmptyParam, EmptyParam, EmptyParam, EmptyParam, EmptyParam,
    EmptyParam, EmptyParam, EmptyParam, EmptyParam);
end;

проверено на Microsoft Office 2003.