Why colour yields more pages than black
The gap looks absurd and is not: the two figures do not measure the same thing.
The 4,500 pages in black describe an ordinary text document, where black works alone and covers the sheet with characters. The 7,500 pages in colour describe a standardised page where the three colours share the surface: each lays down only a third, so each bottle lasts longer.
In other words, a colour bottle's yield assumes the other two are working with it. If you mostly print black text, your T6641 will empty well before the other three — and that is the most common case. The first refill you buy will nearly always be a black on its own.
Never compare two yields of different colours
That is the rule to remember, and it holds for every tank machine: a page count only compares at identical volume and identical use. Comparing the black with the colours makes no sense, any more than comparing millilitres — that is what makes people think they have a bad deal when there is none.
The only usable figure is the one from your use: see which of your four tanks goes down fastest, and order that one.
A plain multifunction
The L382 prints, copies and scans, with no screen and no Wi-Fi — a USB connection. It holds 100 ordinary sheets and 20 photo sheets, and turns out 33 pages per minute in draft mode, 10 to the ISO standard.
Like any tank machine, it fears inactivity far more than volume: after several weeks idle, a cleaning cycle draws on all four tanks with no page coming out. One colour page a week is enough to avoid it — and it is also what keeps the three colours in working order on a machine used mostly for black.
A fleet of printers to keep supplied?
We draw up the list of consumables for your whole fleet and a single grouped quote. Invoice in your company's name with its ICE number, delivery anywhere in Morocco.