That’s especially true if your printer is connected in an office where lots of people may be printing at once. The printer would struggle to handle all the information about what you are printing at once because it isn’t fast enough and it doesn’t have a very high memory. The word ‘spooling’ is a computer programming term and refers to a computer application that organises data or information and passes it across to a device with low memory and is usually slow to handle the data, such as a printer.