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HP Fax 640 CB782A#ABA 14.4Kbps Thermal Inkjet Fax Machine

  • 14.4Kbps
  • 6 sec per page
  • Email this page
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HP professional quality, plain-paper 640 Fax will simplify your everyday faxing and copying. Highlights include convenient one-touch buttons and easy-to-follow menus.

Learn more about the Hewlett-Packard CB782A#ABA


Fax 640

General SPEC

Modem Speed
Transmission Time
6 sec per page
Up to 50 pages
Print Method
Thermal Inkjet
Paper Size
Paper Tray Capacity
50 sheets
Speed Dialing Numbers Maximum: Up to 50 numbers
Copy Resolution: Black graphics: Up to 600 x 300 dpi; Black draft: Up to 300 x 300 dpi, Black (fine mode): 203 x 196 dpi, Black standard mode: 203 x 196 dpi
Copy Speed: Black: Up to 4 cpm
Number of Copies: 50
Scan Resolution: Up to 200 x 200 dpi, Grayscale Levels: 64
Duty cycle (max monthly vol): Up to 500 pages
Custom Media Sizes: 8.5 x 11 to 8.5 x 14 in

Physical SPEC

14.4" x 12.8" x 9.9"
6.5 lbs.

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

Customer Reviews of the Hewlett-Packard CB782A#ABA

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  • Anonymous
  • 8/24/2011 2:57:35 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

2 out of 5 eggsDon't be fooled!

Pros: It sends and receives faxes and makes coppies.

Cons: It has a printer port in the back USB. I hooked it up and Windows sees it as a HP 640c Printer using HP's online printer detection. When I called HP for support they told me there was no USB port in the back and hung up. Then the next guy explained that it won't print. Beautiful. So I'm going to try to see if Linux will auto detect the driver needed and print or do an lspci or lsusb.

Other Thoughts: Nice Paperweight.

1 out of 2 people found this review helpful. Did you? Yes No

  • Ronald R.
  • 9/14/2009 9:17:41 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

3 out of 5 eggsAverage Value

Pros: Ease of setup, compact size

Cons: Mediocre print quality, no printed receipt confirmation of sent faxes.

Other Thoughts: Machine was very simple to set up and operate. HP's procedure confirming proper machine operation is a nice feature.

I was expecting improved print quality with this inkjet printer, but was disappointed. Printing is no sharper than with my old Panasonic web fax machine. There is no way to improve the resolution, either. Also, there is no written receipt confirmation generated when a fax is sent. All you really know is that the connection was made.

All in all, a budget machine at best with many limitations. But, for $49., what should one expect, I guess?

3 out of 3 people found this review helpful. Did you? Yes No

  • Luis H.
  • 8/4/2009 11:27:55 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggson time & easy to use

Pros: fax came in 2 days after ordering. it arrived just when I needed it. It was delivered in mint condition. the instructions were good and had it running in 15 min.

Cons: it took me a few minutes to insert the ink into fax machine. I tried a few times until finally got it. other than that no complains..

Other Thoughts: so far it works well. we'll see

3 out of 3 people found this review helpful. Did you? Yes No

  • Anonymous
  • 5/30/2009 2:40:01 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month

5 out of 5 eggsSurprised

Pros: Simple setup, easy to install ink Cheap, I got it when it was $39.xx a few weeks ago

Cons: Free shipping took over a week
Does not work with windows fax
or the computer

Other Thoughts: Works with Analog or Digital phone services.
Makes copies on demand, clear and crisp printing
Just a pure stand a lone simple fax machine

4 out of 4 people found this review helpful. Did you? Yes No

  • Jami D.
  • 2/24/2009 6:42:50 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsbest bet for the $$$$$

Pros: easy to use, works great

Cons: cartridges a little hard to find

2 out of 2 people found this review helpful. Did you? Yes No

  • Dave K.
  • 12/9/2008 1:14:55 PM
  • Tech Level: High
  • Ownership: 1 day to 1 week
  • Verified Owner

3 out of 5 eggsGood FAX, with reservations

Pros: Small form factor. Cheap price!

Cons: Comes with a ink cartridge that is "introductory", which means you get about 15 - 20 pages before it runs out of ink! Probably was something in the documentation about that, but when was the last time all of the documentation was read???

3 out of 3 people found this review helpful. Did you? Yes No

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