Installing and removing the PTFE Mat and PTFE wear strips

Do these tasks when the PTFE mat shows obvious signs of wear or damage, or you start getting offset on prints.

This section describes the following procedures:

You need the following items when you install or change the PTFE mat and PTFE wear strip on the Infoprint 4100:

Refer to the "Supplies Work Sheet" in Appendix A. Obtaining Supplies of the Planning and Configuration Guide for the part numbers for these supplies.

Installing the PTFE mat and wear strip

Printer 1 and Printer 2 must be powered off before you start this task.

Do this procedure to install the preheat platen PTFE mat and wear strip.

Procedure:

  1. Shut down and power off the system.
  2. Remove all forms from Printer 2.
  3. Open the center and top covers of the printer.
  4. Open the back cover, the stacker gate and stacker door, and the oiler gate to allow the air flow to help cool down the preheat platen.
  5. Attach the PTFE mat and wear strip to the clip as follows:
    1. Lay the wear strip (4) and mat (6) on a flat surface with the sensor cutouts (5) as shown. Lay the clip (3) on top of the mat and wear strip so that the lip (1) faces up.
    2. Insert the clip through the slots in the mat and wear strip as shown. To make the installation easier, use cellophane tape (2) to attach the mat and wear strip to the clip.
      insert clip through slots
    3. With the clip inserted into the mat and the wear strip, and the mat and strip taped in place on the clip, roll the mat and wear strip (2) up and over the top of the clip (1) so that the sensor cutout (3) will face the front of the printer when you install the assembly on the shutter vacuum plate.
      shutter vacuum plate
  6. Install the entire assembly onto the preheat platen through the preheat platen entry area:
    1. Bring the bottom edge of the mat up to the clip and loosely hold the mat in your left hand and the clip in your right hand.
      position the mat
    2. Position the assembly so that the clip is lined up with the shutter vacuum plate (1), from the front to the back of the printer.
      position the assembly
    3. While holding the clip in your right hand, release the mat from your left hand, and let it unroll onto the preheat platen (2). Ensure that the mat and wear strip lay flat on the preheat platen and that the holes are aligned, front to back, with the holes in the shutter vacuum plate.
    4. If your clip does not install using the M4 thumbscrew, press the clip firmly down onto the top right edge of the vacuum plate along the complete length of the vacuum plate (front to back of the printer). The ends of the clip will fit over the shaft that is below the vacuum plate.
    5. Using your right hand, gently slide the mat from side to side until you can feel that the holes on the lower part of the mat are securely engaged with the pins protruding from the preheat platen (3). Ensure that the cutout on the mat is positioned correctly around the skew sensor (4) and that the mat is aligned correctly with the red line at the entry point of the preheat platen (to the right of the skew sensor).
    6. If your clip installs using the M4 thumbscrew, attach the clip (2) to the bracket (1) using the M4 thumbscrew (3).
      attach clip to bracket
    7. If your clip installs using the M4 thumbscrew, attach the clip (2) to the vacuum plate (4) using the M4 thumbscrew (5).
      attach clip to vacuum plate
  7. Power on the system.
  8. Reload the forms. See "Working with Forms" for loading instructions.
  9. Set the Printer Speed (Printer Definition -> Printer -> Basic).
    Note:
    For InfoPrint Models HS2 and HD3/4, either High or Low speed may be set. For InfoPrint Models HS3 and HD5/6, only Low speed may be set.
  10. Adjust the temperature and check the fusing quality as follows:
    1. Close the center and top covers, the back door, the stacker gate and stacker door, and the oiler gate.
    2. For forms over 42 pounds, increase the preheat temperature setting to 100 (Printer Definition -> Print Quality). For heavy weight paper less than 42 pounds, set the preheat temperature to 70.
      Note:
      Wait at least three minutes after increasing the temperature before running test prints.
    3. Run some test prints to ensure proper fusing.
    4. If good fusing cannot be obtained, remove the wear strip, run test prints again, and check the fuse grade again.
  11. Select Start on the printer operator panel or on the Main touch panel for the affected printer.
    caution 85

Removing the PTFE mat and wear strip assembly

Printer 1 and Printer 2 must be powered off before you start this task.

Do this task when the PTFE mat or wear strip show obvious signs of wear or damage, or you start getting offset on prints, or when the mat assembly is not needed for the type of form you are running.

Procedure:

  1. Shut down and power off the system.
  2. Remove all forms from Printer 2.
  3. Open the center and top covers of the printer.
  4. Open the back cover, the stacker gate and stacker door, and the oiler gate to allow the air flow to help cool down the preheat platen.
  5. To remove the assembly:
    1. Using both hands, grasp the lip (1) on the left end of the clip with your left hand and grasp the right end of the clip (2) with your right hand. Gently lift the clip from the shaft below the vacuum plate.
      grasp clip
    2. Rotate the clip out of the way (1) and slide the mat lifter tool under the mat (2). Carefully lift the mat off the pins (3) and remove the entire assembly from the preheat platen entry area.
      rotate clip
  6. Power on the system.
  7. Reload the forms. See "Working with Forms" for loading instructions.
  8. Close the center and top covers, the back door, the stacker gate and stacker door, and the oiler gate.
  9. Set the preheat temperature back to the default value (Printer Definition -> Print Quality).
  10. Select Start on the printer operator panel or on the Main touch panel for the affected printer.
    caution 85