LC

Lesson 9: Supporting Print Devices

Lesson 9: Supporting Print Devices

Multifunction Devices (MFDs)

  • Perform printing, scanning, faxing.

  • Complex, used in enterprise settings, requiring proper installation.

  • Require correct OS and architecture-specific drivers.

  • Printer Languages: PCL (HP) and PostScript (Adobe).

  • Connectivity: USB (Type A for computer, Type B for printer), RJ45 (Ethernet), Bluetooth, 802.11 (Wi-Fi).

  • Printer Sharing: Through a connected computer or print server.

  • Print Job Options:

    • Duplex Printing: Prints both sides.

    • Orientation: Portrait vs Landscape.

    • Paper Source: Multiple trays, selectable in print dialog.

    • Print Quality: Adjust for draft or high-quality.

    • Security: PIN-required prints, logs for usage tracking.

Laser Printers

  • High-quality output, fast printing, ideal for offices.

  • Components: Imaging Drum (transfers toner), Fuser Assembly (affixes toner), Transfer Belt (for color printers), Pickup Roller (feeds paper), Separation Pad (prevents multiple pages).

  • Seven-Step Process: Processing, Charging, Exposing, Developing, Transferring, Fusing, Cleaning.

  • Maintenance: Replace toner, clean printer, calibrate after cartridge replacement.

Inkjet Printers

  • Common for home use, inexpensive, quiet, color output.

  • Challenges: Costly cartridges, ink fades, prone to clogging.

  • Cartridges: CMYK or integrated print heads.

  • Maintenance: Clean print heads (automatic/manual), replace cartridges, calibrate for color alignment, handle paper jams.

Thermal Printers

  • Use heat on coated paper to create output (no ink/toner).

  • Disadvantages: Paper fades with heat, not suitable for archiving.

  • Maintenance: Replace paper, clean heating element (IPA), avoid heat exposure for paper.

Impact Printers

  • Dot Matrix: Creates output by striking a ribbon against paper.

  • Cost Efficiency: Low page cost, great for multi-copy printing.

  • Noise Level: Loud operation.

  • Maintenance: Replace ribbon, printhead, ensure proper paper feed.

3D Printers

  • Types: Filament Printing (FDM), Stereolithography (SLA).

  • Applications: Rapid prototyping, specialized parts in space (e.g., ISS).

  • Print Bed: Needs to be level and clean, adhesive surfaces secure prints.

Troubleshooting Printers

  • Test Page: Use Windows settings to check printer functionality.

  • Output Issues:

    • Inkjet: Clean or replace print heads.

    • Laser: Inspect drum for damage.

    • Smudging: Check fuser assembly.

  • Paper Jams: Check for obstructions, functional rollers.

  • Print Queue: Clear corrupted jobs, restart print spooler.

  • Mechanical Issues: Check for jamming, grinding sounds, and ink cartridge installation.