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SKU: CB788A

HP 640 Fax

Print technology
HP Thermal Inkjet

Contact us for pricing

Technical specifications

Product

UPC number 883585076161
Subcategory Fax
UNSPSC code 43212104

Display

Fax Resolution Black (best) Up to 203 x 392 dpi

Battery and power

Power supply type Internal

Print

Acoustic power emissions (active, printing) 40 dB(A) (idle mode), 55 dB(A) (average), 65 dB(A) (maximum)
Print technology HP Thermal Inkjet

Copy and scan

Copy reduce / enlarge settings 50 to 150%
Copy resolution (black graphics) Up to 600 x 300 dpi
Copy resolution (black text) Up to 300 x 300 dpi
Copyright notice © Copyright 2026 HP Development Company, L.P. The information contained herein is subject to change without notice. The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Paper handling

Media sizes, custom 210 x 297 to 216 x 356 mm

Physical

Maximum dimensions (W x D x H) 364 x 324 x 250 mm (with paper tray)
Dimensions (W x D x H) 364 x 253 x 134 mm
Weight 3.0 kg

Package

Package dimensions (W x D x H) 440 x 326 x 245 mm
Pallet dimensions (W x D x H) 990 x 890 x 2206 mm
Package weight 4.6 kg
Pallet weight 248.3 kg

Warranty and service

Manufacturer Warranty One-year limited hardware warranty backed by HP Customer Care, service and support; one-year technical phone support. For additional information Contact HP

Other

What's in the box HP 640 Fax, HP Black Inkjet Starter Cartridge (3 ml), Setup Booklet, User's Guide, power cord, phone cord
Power consumption 15 watts (average)
Power Input voltage 100 to 127 VAC, 50/60 Hz
Registration required No
Electromagnetic compatibility FCC Part 15 - EMC ICES-003
Safety UL 60950-1, 1st Edition, 2006-07-07 (Information Technology Equipment - Safety - Part 1: General Requirements) CSA C22.2 No. 60950-1-03, 1st Edition, 2003-11 (Information Technology Equipment - Safety - Part 1: General Requirements) NOM-016-SCFI:1993
Copies, maximum Up to 50 copies
Operating humidity range 20 to 80% RH
Recommended operating humidity range 40 to 60% RH
Operating temperature range 10 to 35º C
Recommended operating temperature range 15 to 25º C
Fax Auto Redial Yes
Fax Broadcast Locations 5
Fax Speed Dials, Maximum Number Up to 50 numbers
Faxing Yes, black & white
Fax Transmission Speed 6 sec per page
Key selling point Simple to use and efficient with one-touch buttons and easy-to-understand menus for quick access to reports, system set up and tools.
Image legal disclaimer Product image may differ from actual product
Taxonomy Scanners and Fax
Usage General office
Duty cycle (monthly, A4) Up to 500 pages
Input capacity Up to 50 sheets
Overview Professional quality plain-paper fax/copier for managing every day needs.
Photo (product photo, jpg, 190x170) Scanners Copiers Faxes/CB788A_190x170.jpg
Photo (product photo, jpg, 400x400) Scanners Copiers Faxes/CB788A_400x400.jpg
Photo (product photo, jpg, 70x100) Scanners Copiers Faxes/CB788A70x100.jpg
Company HPI
Product long name HP 640 Fax
Short product name 640
Automatic document feeder capacity Standard, 10 sheets
Product classification flag Standard HP Product
Tangible flag Y
Material Type for item FERT

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