Hi, My HP Deskjet 3940 has been printing very well for the past 2+ years. Recently the printouts are not clear. Every few lines the printer prints only half the characters. Either the top half or the bottom half. Or the printout is totally unclear in the top half of page and progressively becomes a little clearer. However, characters are still partially cut.
Adjust the printing properties from normal to best.
SOURCE: Shadow On Printout
Here are the possibilities: -drum blade is not cleaning well, take out toner look at the shiny cylinder ( drum) is there toner on it? change cartridge. - transfer roller ( black roller on bottom of machine that comes in contact with drum) take lint free cloth and wipe may need to be changed,
SOURCE: unrequested characters and nos on top of printed matter
you can try with epson compatibel 9pin from the printer list
SOURCE: My colour printouts from new
Hello,
There is an update for your printer. This is a firmware update. A firmware update, rewrites code located on the printer's main system board. The latest update is dated 10/17/08.
Flashing firmware does not have a go back element or undo, so it is really important that we verify your model and what seiries of printer you have. I suspect you have a CLP-300 Series printer and that the 310 of the 300 just describes some features added or left off and even who you purchased it from, in many cases.
Please look at these two photos and then post the data off the name plate for your model number in particular.
You will notice there are two lines to include in your reply.
1.) The Model: (first line)
2.) M/C entry (second to last entry in this photo of the label.
Once you verify this and I post the firmware update link for you, you will need to follow the instructions I include below.
Regards,
Worldvet
[from Samsung.com PDF file on this firmware upgrade]
Samsung has released a new Software upgrade file for print quality, automatic error recovery, and toner save mode on color laser printers.
Procedure to Set-up Download Mode on Your Printer - CLP-300 series
Turn power off.
While holding down the ‘STOP’ button on the Printer, turn the Printer back on.
Keep holding down the ‘STOP’ button until all the LEDs turn orange.
Then release the ‘STOP’ button, and press it again, one more time.
1. How to Upgrade
Please make sure to check the printer model number before performing the firmware upgrade.
2. Release Notes
Improved on light printing quality at low temperature environment
Automatic error recovery at abnormal operation
Toner save mode by optimized toner supplying
3. Caution
After firmware upgrade is completed, green LED lights will light up.
Do not turn off the printer before green LED lights turns on. A power interruption will corrupt the process.
If the printer is connected by a USB cable, disconnect all other USB devices, except your keyboard & mouse, from the computer.
If possible, be certain the Printer is connected to a BackUPS
Firmware Update Confirmation Instruction
Model CLP-300 series
When firmware upgrade is started, status LED light will start blinking.
As the printer reinitializes, status LED light will automatically turn off and then on.
Firmware upgrade is complete when status LED stays on green.
After firmware upgrade is completed, the LCD will display the message ‘Ready Copy’ and the LEDs will stay on green.
4. If there is an Error after firmware upgrade
If LED is on red or blinking after firmware upgrade, set-up download mode again and re-try the firmware upgrade.
SOURCE: i need to download hp deskjet 3940 software & drivers
Download from link below:
HP Deskjet 3940 Printer series - Download drivers and software
SOURCE: my epson LX 300 printout...
hi...this is catridge problem.
the catridge may be about to finish and the mixing is not properly taking place.
the outlet from the catridge may be blocked so reqired amount of ink is not flowing out from it.
please change the catridge it wil be fine
if my answer wqas useful please rate me
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