3.11 Given a scenario, install and maintain various print technologies. Flashcards
There is a variety of print technologies such as laser, inkjet, thermal, impact, and 3D printers. There are also virtual print options to print to what four file types?
text
XPS
image file.
Name the 7 steps of the laser printing process in order.
Processing Charging Exposing Developing Transferring Fusing Cleaning
This stage builds the entire page in memory.
1 - Processing
This stage prepares the drum with negative charge, creating a “blank slate”.
2- Charging
This stage draws the image with the positively charged laser on the drum.
3- Exposing
This stage adds negative charged toner to the imaging drum, sticking only to spots touched with the laser.
4- Developing
In this stage, the transfer roller/transfer belt transfers the toner from the drum to the paper.
5- Transferring
This stage uses heat and pressure to bond the toner to the paper.
6- Fusing
In this stage, any residual toner is cleaned off of the imaging drum.
7- Cleaning
Processing
Before any actual printing is done, the image of the full page in placed into memory.
Charging
A high negative charge is applied to the imaging drum.
Exposing
The laser “draws” the image of the page onto the imaging drum by exposing it to the laser light.
Developing
The negatively charged toner is transferred to the imaging drum. Since the drum is also negatively charged, the toner will only stick to the areas that have been neutralized by the laser.
Transferring
The transfer roller/transfer belt transfers the toner from the drum to the paper.
Fusing
A fusing roller users heat and pressure to bond the toner to the paper.
Cleaning
Any residual toner is cleaned off of the imaging drum.
After processing, the laser “draws” the page image onto the ___.
imaging drum
The ___ applies pressure and heat to bond the toner to the paper.
fuser assembly
Used in color laser printers, the ___ transfers the page image from the imaging drum to the paper.
transfer belt
Used in black-and-white laser printers, the ___ transfers the page image from the imaging drum to the paper.
transfer roller
Rubber ___ feed paper from the paper tray through the printer.
pickup rollers
The ___ ensures that only one page is fed at a time.
separation pad
To print on both sides of the paper, the ___ will flip the paper over.
duplexing assembly
Other printer types don’t need memory, so ___ might cost a little more because of the additional memory installed.
laser printers
Often the imaging drum is part of what, what must be considered if this is the case?
The toner cartridge. When replacing cartridges, take care not to expose the drum to light as it is photosensitive.
Color printers have how many toners?
4; CMYB
What component do color laser printers have that monochrome laser printers lack?
Transfer belt. Color printers transfer all the color onto the transfer belt first then a transfer roller.
If no pages are being picked up, or too many in a laser printer, what component(s) is likely compromised?
Pickup rollers or the separation pad. Both easy to clean and replaceable.
Not all printers allow you to print on both sides, however some can if you purchase a ___ as an add-on.
duplexing assembly
Laser printers tend to be expensive, so regular ___ must be done to keep them running well for a long time.
maintenance
Printer manufacturers recommend replacing certain parts periodically. They provide these parts in ___.
maintenance kits
What can you expect to find in a laser printer maintenance kit?
May include a fuser assembly, transfer belt, transfer roller, pickup rollers, or separation pads.
____ is done to keep the page image sharp and accurate. This may be done on a periodic basis and when parts are replaced. Each printer will have its own ____ process.
Calibration
Why is it important to make sure laser printers are very clean specifically?
They use toner; it will leave residue in the printer. Keeping the inside of the printer clean will keep it running well and prevent loose toner from showing up on printouts.
How do you know when to perform scheduled maintenance on a laser printer?
Maintenance scheduling is usually based on the number of pages that have been printed through that laser printer. There’s a page counter inside the printer that will help you know when a good time would be to schedule this maintenance.
Once you replace a toner cartridge or perform maintenance on a laser printer, it’s common to…
print out a test page. This can be automated or manual.
You might find that a new toner cartridge prints a little bit differently than the cartridge that was used before. What should the technician do?
Calibrate the printer.
You’re able to adjust the density of colors on the printout by performing a laser printer ___.
Calibration. It will provide you with a set of colors and marks on a page that you can then use to help determine how dense the output should be.
