You can ink by smothering the rubber in vasaline and bleach
If it has water-based ink; then just use dish washing soap and water. If it is another ink, there are various products that can help you remove ink from the rubber.
the ink will soon fade, the rubber will lose its strechiness and the paper will stay white
Glass is printed by either screen printing with a solvent based ink. Or pad printed with a solvent based ink.
You can use rubber stamps with food if you use a food colorant as an ink as normal stamp ink is toxic
MICR readers are one type of device capable of reading text printed with magnetic ink.
Take the timing cover off, and DO NOT loosen the tensioner pulley, BUT check for alignment of the gears. Check tension of the belt, on the long side, by twanging it with one finger (putting one finger under the belt in the center of the long side, and pulling lightly out and allowing the belt to vibrate.) if it doesn't twang for 2 to almost 3 seconds after you do this (vibrate for almost 3 seconds, then it's too loose.) A special tool is normally used to tighten this belt after loosening the large nut holding it. After adjustment, turn the engine over with the crank nut 3 full revolutions, then recheck belt tension. The main next thing to check, is the amount of printed ink still remaining on the back side of the belt. To check the ink: turn the engine over with only the crankshaft pulley bolt, NEVER by the timing gear bolt, until the printed ink comes into view. The ink is bright white or yellow when the belt is new. When the ink is 90% gone, then the belt is 90% worn. This is a freewheeling engine, so if the belt breaks, it will not normally damage the valves.
No, nail polish can not remove pen ink. Nail polish -remover- might remove pen ink but I am not sure.
to erase ink apparently
how do i remove ink stains from wet clothes
MICR
I have recently found that cheap ink is not as high of a quality or grade as expensive ink. The cheaper ink tends to smudge and smear and does not look as good once printed.