It is not strange that a printer claiming that it can print a high number of pages per minute (ppm), which always be the first criteria referred by the end user before they decided to buy it. But does it really able to print that fast? I had a Canon ip3300 which just dead couple days ago that have a rating of a whooping (not so I know) 25ppm for black printing in fast (draft) quality. I did some testing last time where I printed a set of document that has around 50 pages, and of course I expect it will be ready for me to collect within 3 minutes. But apparently it did not; took it around 5 minutes to print all the pages that are full of words in draft quality. As a conclusion, the printing speed rating in ppm is not accurate as there is no standard on which type of document (full of words, one line of words etc.) used in the printing speed test. But still ppm is always referred as printing speed for all the different brand printers.
Images per minute (ipm)
So what is ipm? Apparently ipm is used in the new ISO print and copy measurement standards which applicable to inkjet printers launched 2009 onwards. For printing, they have used a set of famous office document application, such as Word, Excel and Pdf (4 pages/set) to do the printing speed test (by measuring the printing time for each set). Let’s have a look on how the ISO applied in printing and copying speed for printer:
If you interested for more information about the ISOs, do head here and download the pdf file from Canon.
As we all know, ISO always have some very good standard reference for many different things. Back in the day, ppm is always be the first feature that I will look for whenever I buying a printer, but not anymore since there is no standard protocol/procedure to test for the speed. With these new ISO standards applied on printer, not only they are able to tell consumer the true printing power, but it can be an accurate reading for comparison with each of the different printer brand. However, it seems like only Canon Inc. is the only one printer company that applying these ISO (ipm rating), but I am pretty sure that these will become a trend for other printer brand. Why? For me, ppm rating seems no longer effective to persuade consumer to buy their printer, and quickly enough consumer will start losing confidence towards the companies that do not want to implement the ISO testing. We shall see, but I am going to get one new printer (with ISO24734/ISO24735 of course) from Canon very soon.