HP Officejet Pro 251dw Printer series - Manual (Page 100)

• Several kinds of media require a specific orientation when you print on both sides of a page.
These include letterhead, preprinted paper, and paper with watermarks and prepunched
holes. When you print from a computer running Windows, the printer prints the first side of
the media first. Load the media with the print side facing down.
• For auto-duplexing, when printing finishes on one side of the media, the printer holds the
media and pauses while the ink dries. Once the ink dries, the media is pulled back into the
printer and the second side is printed. When printing is complete, the media is dropped onto
the output tray. Do not grab it before printing is complete.
Print specifications
Black print resolution
1200 x 1200 optimzed dpi on plain paper from 600 x 600 dpi input
Color print resolution
Up to 1200 x 1200 optimized dpi from 600 x 600 input dpi
Web Services specifications
An Internet connection using either a wired (Ethernet) or wireless connection.
HP ePrint
• Maximum size of email and attachments: 5 MB
• Maximum number of attachments: 10
NOTE: The printer’s email address must be the only address listed in the “To” line of the
email message.
Supported file types:
◦
PDF
◦ HTML
◦ Standard text file formats
◦ Microsoft Word, PowerPoint
◦ Image files, such as PNG, JPEG, TIFF, GIF, BMP
NOTE: You might be able to use other types of files with HP ePrint. However, HP cannot
guarantee that they correct functionality with the printer because they have not been fully
tested.
Printer Apps
To use certain Printer Apps, you might need to set up an account with a partner website. For more
information, visit www.hpconnected.com.
HP website specifications
• A web browser (either Microsoft Internet Explorer 6.0 or higher, Mozilla Firefox 2.0 or
higher, Safari 3.2.3 or higher, or Google Chrome 3.0) with the Adobe Flash plug-in (version
10 or higher).
• An Internet connection
Environmental specifications
Operating environment
Operating temperature: 5° to 40° C (41° to 104° F)
Operating humidity: 15 to 80% RH non-condensing
Recommended operating conditions: 15° to 32° C (59° to 90° F)
Recommended relative humidity: 25 to 75% RH non-condensing
Appendix A
96 Technical information