The photocopier has evolved from being a luxury to a necessity in any modern office. Many people take the performance of a photocopier for granted. Do you have any idea how these amazing machines produce exact copies of a document?
What is the one basic physical principle that makes a photocopier work?
What is a good way to see a simple version of the "opposites attract" principle in operation?
You can generate a static charge on a balloon by rubbing it on a sweater and see it attracting bits of paper.
Create a static charge by combing long hair briskly with a plastic comb and then placing it near bits of paper.
Both of the above
Toner cartridges do not generally have a charge, but you can generate a static charge on a balloon by rubbing it on a sweater and stick it to a wall. You can do the same thing with a plastic comb by combing long hair briskly and then put it near to bits of paper and the paper will jump to the comb.
How does an image get from the paper onto the copier drum?
The drum is selectively charged by static electricity to match only the white spots on an original.
The drum is charged by static electricity, positive for black spots and negative for white spots on an original.
The drum is selectively charged by static electricity to match only the black spots on an original.
The drum is selectively charged by static electricity to match only the black spots on an original. Toner is attracted to the drum only where there is a static charge relating to the black on the original.
How does light manage to remove the positive charge from areas on the drum?
Wherever a photon of light hits the photoconductive drum, emitted electrons neutralize the positive charges.
Wherever a photon of light hits the photoconductive drum, emitted electrons neutralize the positive charges. The dark areas on the original do not reflect any light leaving corresponding positive charges on the drum.
Wherever a photon of light hits the photoconductive drum, emitted electrons reverse polarity of charges.
Wherever a photon of light hits the photoconductive drum, emitted electrons intensify negative charges.
Toner is not an ink but rather a fine plastic-based powder that is negatively charged. In the old days, toner was made with carbon, which has been replaced by several different polymers to improve copy quality.
What components inside a photocopier charge the drum and paper with a positive charge?
The corona wires inside the photocopier are electrified with a high voltage, which they subsequently transfer as a positive charge, to a drum or a blank piece of paper in the form of static electricity.
What is the function of the fuser inside a photocopier?
Without allowing any sticking, the fuser must melt and press toner into the paper.
The function of the fuser is to melt and press toner into the paper containing a copy without any of it sticking to the fuser. The rollers of the fuser are heated with an internal quartz lamp and are coated with Teflon to prevent sticking.
The fuser shoots microwave energy at the copy without touching it in order to melt the toner into the paper.
The fuser interrupts power to your photocopier to protect it from damage due to an electrical problem.