How can I get darker print on my incoming faxes?

please replace with new original cartridge to solve this problem.

is the number for incoming fax correct and setup properley

make sure the property settings for the fax are not on the Microsoft printer make sure it is set to the local usb printer

This means that your fax is only storing into its internal memory and not printing all incoming faxes, therefore it has no more space for more incoming documents, you should print the documents and maybe you'll need to clear the memory, depending on fax machine, this is done automatically when the documents are printed, and of course, set the incoming faxes to print not to store, this feature is supposed to be used only when the fax has no paper to print.

hp laserjet is not a fax.It is only a printer.

Try this step ... found it on Canon's website

Issue: ERROR LCD: WAITING FOR REPORT
Solution: Set [AUTO PRINT RX] to ON (MX300 / MX310)

AUTO PRINT RX When [AUTO PRINT RX] is set to [OFF], incoming received faxes will be temporarily stored to memory and transaction reports (TX, RX and Activity) remain in memory. The default setting is [ON], which means incoming received faxes and transaction reports will automatically print. The fax machine will not automatically print a received fax and will store it in memory in the following conditions.

• Ink is low or has run out
• The paper size and type is not set correctly
• Paper has run out
• The Output Tray is closed

To set AUTO PRINT to ON, please follow these steps.

1. Press the <FAX> button to enter the Fax menu.
   
   
2. Press the <Menu> button. [FAX SETTINGS] is displayed
   
   
3. Press the left or right arrow button to select [RX SETTINGS] , then press <OK> two times.
   
   
4. Press the left arrow to select [ON], then press <OK>.
   
   Note: When AUTO PRINT RX is set ON, a sub-menu will appear to PRINT WHEN NO INK.
   
   
5. At sub-menu PRINT WHEN NO INK, decide if you'd like the machine to continue to print incoming received faxes if ink is low.
   
   CAUTION: When this option is set ON, the fax machine will not monitor the ink level of the ink cartridges. If ink is low or out, received faxes will print with streaks or blank. Furthermore, once the fax is printed, it will be deleted from memory.
   
   1. To print received faxes when ink is low or out, press the left or right arrow to select [ON] and then press <OK>.
      
   2. To store received faxes in memory when ink is low or out, press the left or right arrow to select [OFF] and then press <OK>.
      
      
6. Press the <Stop/Reset> repeatedly to return to Fax standby mode.

im not familiar with the particular model. A lot of the small brother laser fax machines will have the laser unit under the drum unit. if you take out the drum unit.. you should see a clear glass that goes across the width of the machine. it is about 1/2" X 9". There is probably toner and dust on the glass.
this will block the laser from reaching the drum. Clean the glass pretty good and this should at least help.

Incoming faxes automatically go into memory. We can't print them out. Would like incoming faxes to print out as they used to. have tried the on off button but it didn't fix the problem

Unplug the machine for 3 minutes and plug it back in. sometimes this will reset everything. good luck