Question about HP Officejet Pro L7780 All-In-One InkJet Printer

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Scanning problem when using document feeder.

When sending a fax using the document feeder on my HP L7780, some pages pass through scanner without being scanned. It happened seven times in a row.

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  • Anonymous Jan 08, 2009

    Almost the same problem--my document feeder "skips" pages through wehn trying to fax.

  • terry55 Jan 24, 2009

    Our HP L7780 has the same problem. While faxing a 20 page document, 15-19 pages will be transmitted. Even with several attempts, no luck. We even returned the Officejet to Staples and the second L7780 performs the same as the first. Staples said it's something we are doing. Right, faxing is an all day chore.

  • Anonymous Feb 07, 2009

    Hi while faxing it skips pages

    Thanks

    Ellen

    Please advise

  • cafferty1 May 11, 2009

    I had the same problem, only mine was even worse. The roller would not lower to grab any pages. I finally got HP to replace the printer - but only after writing their corporate office - the India based tech support person said it would be replaced, but after a month it still hadn't been replaced and I wrote the (hot) letter to HP and finally got a new (refurbished) one - and the document feeder works. However the duplexeer jams every once in awhile and I'm still in the throws of dealing with India/HP corporate on that. It's a great machine when everthing's working :-)

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Posted on Jan 27, 2009

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4215 all in one office yet. When making a copy


Sounds like you're having a problem with the automatic document feeder. The scanner is continuing to scan but the paper is not advancing as it should during the first part of the infeed. Check to see if something is inside retarding the path of the scanned document. Or it could be worn rollers in the ADF.

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Using a brother MFC-J415W printer, what are the steps in sending a fax?


How to fax :
1. Entering fax mode To enter fax mode press (Fax), and the key will glow green.
2. Sending a fax from the ADF (Automatic Document Feeder): Using the ADF to send your faxes is the easiest way. To cancel a fax in progress press Stop/Exit.
a. Make sure you are in Fax mode . b. Place your document face up in the ADF. c. Dial the fax number. d. Press Start.
The machine scans the pages into memory and then sends the document.
3. Sending a fax from the scanner glass : You can use the scanner glass to fax the pages of a book, or a single page at a time. The documents can be up to Letter or A4 size. Press Stop/Exit to cancel a fax in progress.
a. Make sure you are in Fax mode . b. Place your document face down on the scanner glass. c. Dial the fax number. d. Press Start.The machine starts scanning the first page.
For more detailed instructions, you can go directly to Section 4 - page 22 of the manual in Brother's site. Hope this helps.

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1 Answer

My HP Pro 7780 has recently started making copies (through the feeder) with 2 large blank streaks down the middle of the page (lengthwise). I am worried that this is also happening when I send a fax as...


Does this happen when you print, or only when you copy? If you print out a configuration or user settings page, or print a page from the computer, is it also missing two vertical lines of print or is it only when you are copying?

If it happens when you print, you may need a cleaning, or you may need to replace the toner or drum cartridge. If it's an inkjet machine, there's a possibility there is some ink or grease on the encoder strip (a small belt-like plastic strip that goes through the print-head carriage).

If it only happens when you copy, test both the flatbed and the document feeder. If it happens on both then you may have a bad scanner. If it only happens when using the document feeder, you likely have some whiteout (or something) on the glass. When you make a copy in the flatbed, the scanner moves across your document. When you make a copy using the document feeder, the document moves across the scanner. In this case, if there is anything on the scanner glass (like whiteout) your copies will be missing a vertical line of print data (it could be white if there is whiteout on the glass, or it could be dark if something dark is on the scanner glass).

Usually you can lift the flatbed cover and look at the glass to see if anything is on it (usually at the left side of the scanner). Clean the glass, first with alcohol to remove the obstruction, and then with a little windex to remove anything the alcohol may have left behind.

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1 Answer

I need to know how to send a fax from a brother MFC-295cn all-in-one printer


Hello Frank,

Sending a fax is fairly simple.

1. Make sure you have a telephone line connecting to the LINE jack on the side of the MFC-295CN

2. Check if you have a dial tone by pressing the "hook" button on the machine while the line is free.

3. Place a page face down on the flatbed scanner or in the document feeder on the top of the machine.

*Note: If you are using the document feeder, once the page is placed in, you should see "enter fax #" on the LCD

4. Enter the fax number the same way you would dial a regular phone number.

5. Press "Start"

*Note: If you are using the flatbed option, after the sheet is scanned, you will be asked if you want to scan a second page. For additionnal pages, press 1, to end scanning and start faxing, press 2

6. If the fax goes through properly you will see "completed" on the LCD

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1 Answer

When faxing does paper face uup or down


You load the originals print side uo on the document feeder tray or print side down on the glass.
To send a single page fax you can either load the original on document feeder tray or on the glass; to send a multi-page fax you must use the document feeder tray.

The position of the paper is the same either you copy, fax or scan.
All this is clearly explained in the user's manual, that you should read and you can download from HP support pages for you printer:

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You have something on your "scanner glass", the narrow piece of glass that the scanner "looks" through during adf use. Get some window cleaner or rubbing alcohol and clean it with a damp cloth. Often, it's correction fluid (Liquid Paper). A little dot is all it takes because the paper is traveling across the dot, effectively drawing a line down the length of the page.

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Either the glass is scratched or the sensor has gone bad that is used to scan the image.  Are you using a document feeder or laying it flat on the glass?  If you are laying it flat on the glass then it is most likely a sensor going bad.  If you are feeding it through the document feeder it could be that the feeder itself needs to be cleaned, or the paper path through the feeder.
If it is the sensor you will need to send it out for repair.  There may be an option to re-calibrate the scanner in the software, that may help if the sensor has just degraded and not failed.
I hope that helps.

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