print a HTML document with AirPrint

[fast]

Hi,
i used this code for print a html document on inside my app:

-(IBAction)stampastoriaventi {
	
    NSUserDefaults  *defaults         = [NSUserDefaults standardUserDefaults];
	NSArray         *languages        = [defaults objectForKey:@"AppleLanguages"];
	NSString    *currentLanguage  = [languages objectAtIndex:0];
	NSLog(@"Codice lingua %@", currentLanguage);
	
    NSLog(@"stampa storia venti");
    

    UIPrintInteractionController *pic = [UIPrintInteractionController sharedPrintController];
    if(!pic){
        NSLog(@"Couldn't get shared UIPrintInteractionController, need iOS 4.2 or up!");
        return;
    }
    
    NSString *path = [[NSBundle mainBundle] pathForResource:@"vent" ofType:@"html"];
    NSFileHandle *readHandle = [NSFileHandle fileHandleForReadingAtPath:path];
    NSString *htmlString = [[NSString alloc] initWithData: [readHandle readDataToEndOfFile] encoding:NSUTF8StringEncoding];
    
    
    pic.delegate = self;    
    UIPrintInfo *printInfo = [UIPrintInfo printInfo];
    printInfo.outputType = UIPrintInfoOutputGeneral;
    if( [currentLanguage isEqualToString:@"it"] ) {
    printInfo.jobName = @"LA STORIA DEI VENTI";
    } else {
    printInfo.jobName = @"THE STORY OF THE WINDS";
    }
    pic.printInfo = printInfo;
        
        
    UIMarkupTextPrintFormatter *htmlFormatter = [[UIMarkupTextPrintFormatter alloc] initWithMarkupText:htmlString];
    htmlFormatter.startPage = 0;
    htmlFormatter.contentInsets = UIEdgeInsetsMake(72.0, 72.0, 72.0, 72.0); // 1 inch margins
    htmlFormatter.maximumContentWidth = 6 * 72.0;
    pic.printFormatter = htmlFormatter;
    [htmlFormatter release];
    pic.showsPageRange = YES;
        
        void (^completionHandler)(UIPrintInteractionController *, BOOL, NSError *) =
        ^(UIPrintInteractionController *printController, BOOL completed, NSError *error) {
            if (!completed && error) {
                NSLog(@"Printing could not complete because of error: %@", error);
            }
        };
        [pic presentAnimated:YES completionHandler:completionHandler];
}

the problem is that the html document contains pictures and they do not print, how can I fix this?