Mfd Printers 3 Flashcards
What is the purpose of the transfer corona in a laser printer?
It applies a charge to the paper to attract toner from the drum.
What does a developer roller do in a laser printer?
It transfers toner from the cartridge to the drum.
Why is the photoconductive drum in a laser printer sensitive to light?
Exposure to light discharges the drum, creating an image area for toner to adhere.
What is the difference between a virtual printer and a physical printer?
A virtual printer outputs to a file format (e.g., PDF) instead of paper.
What is the role of the high-voltage power supply in a laser printer?
To generate the static charges needed for the drum and transfer process.
What is dithering in printing?
A process that uses patterns of dots to simulate different shades and colors.
What does GDI stand for in printing?
Graphics Device Interface, a Windows component for rendering print jobs.
What is the function of halftoning in printing?
To create the illusion of continuous-tone images using dots of varying size or spacing.
How does an electrostatic plotter differ from a standard printer?
It uses electrostatic charges to create images, primarily for CAD applications.
What is banding in printing?
Visible horizontal lines caused by inconsistent ink or toner application.
What is the primary cause of a 50.4 error in a laser printer?
A fuser-related error, often due to a power issue.
What does the term ‘print emulation’ refer to?
The ability of a printer to simulate another printer’s language or features.
What is the purpose of a separation pad in a printer?
To separate individual sheets of paper from a stack.
How does a piezoelectric inkjet printer create ink droplets?
It uses vibrations from a piezoelectric crystal to eject ink.
What is the purpose of a charge roller in a laser printer?
To apply an initial charge to the drum uniformly.
What is the purpose of firmware in printers?
It controls the printer’s hardware functions and provides operational instructions.
What is overprinting in color printing?
Layering one color over another to create specific shades or effects.
What is the main purpose of a RIP in high-end printers?
Raster Image Processor converts vector data to raster data for printing.
What is the significance of the ICC profile in printing?
It defines color management settings to ensure accurate color reproduction.
What is duplex scanning with an ADF?
Scanning both sides of a document automatically using the Automatic Document Feeder.
What does WSD stand for in printer networking?
Web Services for Devices, a protocol for printer discovery and configuration.
What is the difference between direct thermal and thermal transfer printing?
Direct thermal uses heat-sensitive paper, while thermal transfer uses a ribbon to transfer ink.
What is continuous ink supply system (CISS) technology?
A system that feeds ink directly from reservoirs to the print head, reducing the need for cartridge replacement.
What is the purpose of a drum cleaning blade?
To remove excess toner from the drum after each print cycle.
What does the term ‘page description language’ (PDL) refer to?
A language that defines the layout and content of a printed page, such as PostScript or PCL.
What is the purpose of a fuser roller in a laser printer?
To press and melt toner onto the paper, creating a permanent bond.
How does an inkjet printer achieve grayscale printing?
By varying the size and density of black ink droplets.
What is a duplex assembly in printers?
A component that flips paper for double-sided printing.
What is ‘calibration’ in relation to color laser printers?
Adjusting color accuracy and alignment between print cartridges.
What is a common issue with high-humidity environments and laser printers?
Paper absorbs moisture, leading to jams and poor toner adhesion.
What is the primary function of the primary corona wire?
To charge the drum to prepare it for imaging.
What does ‘media type’ refer to in printer settings?
The type of material being printed on, such as plain paper, cardstock, or labels.
What is an HVPS in laser printers?
High-Voltage Power Supply, which provides power for the charging and transfer processes.
What is the purpose of a formatter board in printers?
It processes print jobs and converts data into printable output.
What is the difference between a long-edge and short-edge duplex setting?
It determines the orientation of the page when printing on both sides.
What is the purpose of a perforation line in continuous form printing?
To allow easy separation of printed pages.
What is the main advantage of piezoelectric over thermal inkjet technology?
It supports a wider range of ink types, including those with higher viscosities.
What does the term ‘finisher’ refer to in printing?
An optional printer component for tasks like stapling, hole-punching, and collating.
What is bleed compensation in printing?
Adjusting the document’s margins to account for edge trimming.
What is a ‘duty cycle’ in relation to printers?
The maximum number of pages a printer is designed to handle per month.
What is a ‘printer buffer,’ and why is it important?
A temporary memory area that holds print job data before processing.
What is the primary role of a transfer belt in color laser printers?
To layer different toner colors onto a single sheet of paper.
What is ‘line printing,’ and where is it used?
A high-speed printing method for text, often used in mainframe environments.
What is skewing in the context of printers?
When paper feeds unevenly, causing misaligned prints.
What does ‘toner density’ refer to in laser printers?
The concentration of toner applied to the page for optimal print quality.
How do color laser printers mix colors?
By layering cyan, magenta, yellow, and black toner in precise amounts.
What is a print server queue?
A list of print jobs waiting to be processed by a network printer.
What is a platen cover used for in scanners?
To hold documents flat against the scanning glass for optimal quality.
