Main trade-off
Canon MAXIFY GX2020
One cassette means a supported paper change can displace the ordinary stack.
Head-to-head
Choose GX2020 when ordinary office paper dominates and its smaller closed body suits the room. Choose GX4020 when family projects regularly interrupt work printing. Its rear tray and single-sheet flat route let suitable special media leave the main plain-paper cassette alone. Both still scan only one side through the feeder, and both drop from 35 Letter originals to five Legal originals per load.
Before you choose
GX2020 has one cassette, so switching to a supported photo or project medium changes the paper waiting for the next print job. GX4020 provides another rear source while plain paper stays in the main cassette. That is useful when one person prints work documents and another starts a school project later. The benefit still depends on selecting the right source and restoring the driver settings. Separate trays reduce the physical paper swap, but they do not make a shared printer aware of who will use it next.
What this is based on
Two household users with different tasks and handoff times crossed with one cassette versus separate paper sources. The deduction includes the next-user reset rather than claiming automatic error prevention.
Main trade-off
One cassette means a supported paper change can displace the ordinary stack.
Main trade-off
Larger closed body and rear access to plan. The flat path accepts one sheet at a time.

Canon GX2020 vs GX4020 for a home office shared with school projects. Compare the closed footprint, paper swaps and the scan limits both printers keep.
Both Canon home-office tank printers combine fax, Ethernet, automatic duplex printing and a 35-sheet Letter feeder. A household needing ordinary work documents and occasional projects could choose either. Paper-source flexibility and the closed body size are the useful reasons to move between them.
Winner by situation
GX2020 keeps the office functions in a smaller closed body.
GX4020 provides a separate rear source.
GX4020 documents the size and 0.1–0.7 mm thickness range.
Both accept five Legal originals and require manual handling of the backs.
What matters in practice
GX2020 has one cassette, so switching to a supported photo or project medium changes the paper waiting for the next print job. GX4020 provides another rear source while plain paper stays in the main cassette. That is useful when one person prints work documents and another starts a school project later. The benefit still depends on selecting the right source and restoring the driver settings. Separate trays reduce the physical paper swap, but they do not make a shared printer aware of who will use it next.
Two household users with different tasks and handoff times crossed with one cassette versus separate paper sources. The deduction includes the next-user reset rather than claiming automatic error prevention.
GX4020’s flat path supports compatible paperboard from 0.1 to 0.7 mm, but the manual limits that route to A4, B5 and Letter. A thick small card is not automatically accepted merely because it is below 0.7 mm. The tray also extends behind the printer and takes one sheet at a time. For a household planning invitations, check the actual material and intended size before choosing the larger machine. GX2020 may be enough when the chosen media already meets its cassette rules and paper changes are infrequent.
Home invitations or school crafts plus a constrained printer location crossed with simultaneous thickness, size, source and single-sheet restrictions. No conversion from grams per square meter to thickness is invented.
Both feeders hold 35 suitable Letter originals but only five Legal originals, and neither automatically scans the backs. If a side business regularly receives long forms, the GX4020 upgrade leaves repeated feeder loads and manual two-sided handling in place. Its larger body earns its place through paper-source flexibility, not a bigger scan stack. GX2020’s smaller closed dimensions can therefore be preferable in a shared room when ordinary documents dominate. Measure the working arrangement separately from either closed size.
Home-business Legal paperwork plus a shared room crossed with identical feeder limits and different closed body dimensions. The comparison distinguishes a real space benefit from an unsupported scanning upgrade.

Canon, 6171C002
Keep ordinary printing, scanning and fax in a smaller closed body.
Canon, 5779C002
Keep plain work paper loaded while another supported medium uses the rear tray.
Meaningful differences
| What changes | Canon MAXIFY GX2020 | Canon MAXIFY GX4020 | Why it matters |
|---|---|---|---|
| Plain paper and a project | One 250-sheet cassette. | 250-sheet cassette, 100-sheet rear tray and one-sheet rear flat route. | The second user can use a separate path instead of removing the work-paper stack. |
| Thicker compatible paperboard | Supported media must use the cassette’s size and weight rules. | Rear flat route, 0.1–0.7 mm, A4, B5 or Letter paperboard. | Thickness, size and driver source all need to agree. |
| Closed body | 14.8 by 15 by 8.9 inches. | 15.8 by 16.4 by 9.9 inches. | GX2020 occupies a smaller closed rectangle, but working access still needs measuring. |
| Incoming paperwork | 35 Letter or 5 Legal originals, single-sided scanning. | 35 Letter or 5 Legal originals, single-sided scanning. | The upgrade changes paper input more than original handling. |
What you give up
Recommendation switch
Choose Canon MAXIFY GX2020. GX2020 preserves the shared office functions.
Choose Canon MAXIFY GX4020. GX4020 keeps the main plain-paper stack separate.
What matters in practice
A smaller printer is easier to place, while a second paper route can keep one person’s project from resetting the next person’s work setup.
What the facts say
Useful conclusions from the current ink-tank printers comparison, followed by the checked facts used to reach them.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Canon MAXIFY GX2020 |
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| Canon MAXIFY GX4020 |
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Ready to choose?
Open either model on Amazon to check the current price, customer reviews and delivery options.

Keep ordinary printing, scanning and fax in a smaller closed body.
Use one main paper type without needing the extra rear paths.
See price & reviews on AmazonKeep plain work paper loaded while another supported medium uses the rear tray.
Use compatible A4, B5 or Letter paperboard through the documented 0.1–0.7 mm flat route.
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