How can I estimate how much ink remains in cartridges in my 5600 all-in-one?

https://resetprinters.net/reset-counter-samsung-ml-1866-printer.html

Cartridge comes along with memory, the information of estimated ink/toner levels will stored in this memory(Depends upon the cartridge model yield will varies). When printer performs the printing, memory count will comes down, when its reaches the minimum count printer will display the message of "low ink/toner/remain pages" levels, once its reaches to '0', display will changes like "replace the cartridge"...But there is no electronic component or mechanism to measure the ink/toner levels in the cartridges.Only estimated levels only printer can recognizes.. Take usage page through menu, you will get the information that usage % & printed pages info,you can judge how much remain it can print...

Method one: Check the ink levels from the idle screen on the color graphics display Look for four icons at the bottom of the color graphics display. The icons represent the ink level remaining in each of the four color ink cartridges: black, yellow, light cyan (blue), and light magenta (pink). A larger and more accurate view of the ink levels can be displayed from the Setup menu. If an ink cartridge containing non-HP ink is being used, a question mark displays instead of the ink drop in the icon for that cartridge. The HP All-in-One cannot detect the amount of ink remaining in ink cartridges that contain non-HP ink. Figure 1: Non-HP ink icon NOTE: HP cannot guarantee the quality or reliability of non-HP ink. Printer service or repairs required as a result of printer failure or damage attributable to the use of non-HP ink will not be covered under warranty. If a hollow ink drop icon displays, the ink cartridge represented by that color icon has very little ink remaining and will need to be changed soon. You might be able to continue printing for a short period of time with ink remaining in the print head assembly. Replace the ink cartridge when the Replace Soon warning message displays on the color graphics display. Figure 2: Low ink level icon When the Empty Ink message appears on the color graphics display, the indicated ink cartridge is out of ink. Replace the indicated ink cartridge. Method two: Check ink levels from the Windows computer The estimated amount of ink remaining in the ink cartridges can be checked from the computer. See the on-screen HP Director Help for information on checking the ink levels from the Printer

1. Open the printer Toolbox. To do so, do one of the following:
   • Open HP Solution Center, click the Settings menu, then point to Print Settings , then click Printer Toolbox .
   • Right-click the HP Digital Imaging Monitor in the tray, then point to your printer model name, and click Display Printer Toolbox .
   The Toolbox opens.
2. Click the Estimated Ink Level tab. The estimated ink level gauges display.

Method three: Check ink levels from the Setup menu

1. Press Setup on the printer control panel.
2. Scroll down and select Display Ink Gauge . The Ink Gauge status from the Tools menu will only display on the color graphics display.

Let me know if you have any other questions. Please rate this solution. Thanks.

you can check the ink level from following steps Method one: Check the ink levels from the idle screen on the color graphics display Look for four icons at the bottom of the color graphics display. The icons represent the ink level remaining in each of the four color ink cartridges: black, yellow, light cyan (blue), and light magenta (pink). A larger and more accurate view of the ink levels can be displayed from the Setup menu. If an ink cartridge containing non-HP ink is being used, a question mark displays instead of the ink drop in the icon for that cartridge. The HP All-in-One cannot detect the amount of ink remaining in ink cartridges that contain non-HP ink. Figure 1: Non-HP ink icon NOTE: HP cannot guarantee the quality or reliability of non-HP ink. Printer service or repairs required as a result of printer failure or damage attributable to the use of non-HP ink will not be covered under warranty. If a hollow ink drop icon displays, the ink cartridge represented by that color icon has very little ink remaining and will need to be changed soon. You might be able to continue printing for a short period of time with ink remaining in the print head assembly. Replace the ink cartridge when the Replace Soon warning message displays on the color graphics display. Figure 2: Low ink level icon When the Empty Ink message appears on the color graphics display, the indicated ink cartridge is out of ink. Replace the indicated ink cartridge. Method two: Check ink levels from the Windows computer The estimated amount of ink remaining in the ink cartridges can be checked from the computer. See the on-screen HP Director Help for information on checking the ink levels from the Printer

1. Open the printer Toolbox. To do so, do one of the following:
   • Open HP Solution Center, click the Settings menu, then point to Print Settings , then click Printer Toolbox .
   • Right-click the HP Digital Imaging Monitor in the tray, then point to your printer model name, and click Display Printer Toolbox .
   The Toolbox opens.
2. Click the Estimated Ink Level tab. The estimated ink level gauges display.

Method three: Check ink levels from the Setup menu

1. Press Setup on the printer control panel.
2. Scroll down and select Display Ink Gauge . The Ink Gauge status from the Tools menu will only display on the color graphics display.

If the ink level is low and the cartridge is new please contact the dealer from whom you got the cartridge and if it shows that the ink level is good enough please comment so that i can give you another step to perform

Try this

For Windows users: In the HP Solution Center, click Settings, point to Print
Settings, and then click Printer Toolbox. Click the Estimated Ink Levels tab,
and then click Print Cartridge Ordering Information.

manual is here

http://h10032.www1.hp.com/ctg/Manual/c00461378.pdf

Hi,
In the HP Director software, click Settings , move your mouse cursor over Print Settings , and then click Printer Toolbox . The Printer Toolbox opens. Click the Estimate of Ink Level tab. A cartridge may be running out of ink even if the graphic shows ink remaining. Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Hope this helps Regards

Introduction This describes how to check the estimated ink level in the cartridge. NOTE: Ink level warnings and indicators provide estimates for planning purposes only. When an indicator shows low ink levels, keep a replacement ink cartridge available to avoid possible printing delays. Ink cartridges do not need to be replaced until print quality becomes unacceptable. Checking ink levels Perform the following steps to check the estimated ink levels: NOTE: If you have installed a refilled or remanufactured print cartridge, or a cartridge that has been used in another printer, the ink level indicator will be inaccurate or unavailable.

1. Open the Printer Toolbox . There are two ways to do this:
   • Click Start and select HP Solution Center . Select the Settings menu, then the Print Settings submenu, and finally the Printer Toolbox .
   • In your printing application, click File , click Print , and click Properties . Click the Services tab, then the Service This Device icon.
2. The Printer Toolbox opens. Click the Estimated Ink Level tab. A cartridge may be running out of ink even if the graphic shows ink remaining (see the note at the start of this section). Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Replace print cartridges that are out of ink or low on ink. Figure 1: Estimated ink levels
3. 

Perform the following steps to check the estimated ink levels:

1. Open the Printer Toolbox . There are two ways to do this:
   • Click Start and select HP Solution Center . Select the Settings menu, then the Print Settings submenu, and finally the Printer Toolbox .
   • In your printing application, click File , click Print , and click Properties . Click the Services tab, then the Service This Device icon.
2. The Printer Toolbox opens. Click the Estimated Ink Level tab. A cartridge may be running out of ink even if the graphic shows ink remaining (see the note at the start of this section). Lines or streaks always appear in printouts when the cartridges begin to run out of ink. Replace print cartridges that are out of ink or low on ink.I hope this Solve your issueKhaled

Normally when you install the print software you install HP Director or solution centre software that has a estimated ink staus monitor..from user manual

Check the estimated ink levels You can easily check the ink supply level to determine how soon you might need to replace a print cartridge. The ink supply level shows an estimate of the amount of ink remaining in the print cartridges. Tip You can also print a self-test report to see if your print cartridges might need to be replaced. For more information, see Print a self-test report. To check the ink levels from the HP Director (Windows) 1. In the HP Director (or HP Solution Center), click Settings, point to Print Settings, and then click Printer Toolbox. Note You can also open the Printer Toolbox from the Print Properties dialog box. In the Print Properties dialog box, click the Services tab, and then click Service this device. 2. Click the Estimated Ink Level tab. The estimated ink levels for the print cartridges appear. To check the ink levels from the HP Image Zone software (Mac) 1. In the HP Director (OS 9) or HP Image Zone (OS X), choose Settings, and then choose Maintain Printer. 2. If the Select Printer dialog box appears, select your HP All-in-One, and then click Utilities. 3. From the pop-up menu, choose Ink Level. The estimated ink levels for the print cartridges appear.

Print a self-test report If you are experiencing problems with printing, print a self-test report before you replace the print cartridges. This report provides useful information on several aspects of your device, including your print cartridges.
Load letter, A4, or legal unused plain white paper into the paper tray.

Press and hold the Cancel / Resume button and then press the Start Copy Color button
The HP All-in-One prints a self-test report, which might indicate the source of the printing problem.