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MX-FN27, MX-PN14  OPERATIONAL DESCRIPTION  6 – 11

1)

After the Delivery sensor (FNPS1) detects the trailing edge of the
paper, the front and rear alignment plates move to the wait posi-
tions.Explanation for 2-point stapling will be omitted because it is
the same as the center alignment operation in Non-sort mode.

– Front 1-point stapling (front alignment plate position: paper

width position (148.5 mm), rear alignment plate position: paper
width + 5 mm)

– Rear 1-point stapling (front alignment plate position: paper

width + 5 mm, rear alignment plate position: center + 148.5
mm)

2)

Move the front and rear alignment plates to align the paper.

Explanation for staple-free staple mode will be omitted because it is
the same as the center alignment operation in Non-sort mode.

Rear Alignment Plate

End of Paper

+5 mm

Middle of Feeding Path

148.5 mm

Front Alignment Plate

Rear Alignment Plate

End of Paper

+5 mm

Middle of Feeding Path

148.5 mm

Front Alignment Plate

5mm

5mm

Middle of Feeding Path

Rear Alignment Position

Front Alignment Position

MX-FN27, MX-PN14  OPERATIONAL DESCRIPTION  6 – 12

In staple operation, the specified number of sheets of paper is stapled by the stapler unit.

The staple position varies depending on the staple mode and paper size.

The stapler unit's home position is detected by the Stapler shift home position sensor (FNPS11).

After power ON, the finisher controller PCB drives the Stapler shift motor (FNM7) to return the stapler unit to the home position.

If the stapler unit is at the home position to begin with, it remains there in standby mode.

When a staple instruction is received from the host machine, the staple unit moves to the staple wait position according to the staple position.

Stapling occurs when the cam driven by the Stapler motor (FNSTPLIF) rotates once.

The cam's home position is detected by the staple home position sensor.

If the staple home position sensor is off, the finisher controller PCB runs the stapler motor until the staple home position sensor turns on and resets
the staple cam to its initial state.

Staple cartridge and staples inside the staple cartridge are detected by the staple detection sensor.

Whether the staple in the staple cartridge is pushed out to the leading edge of the cartridge is detected by the staple edging sensor.

– Number of sheets that can be stapled

The number of sheets that can be stapled exceeds the upper limit of the number of sheets that can be stapled, select whether the operatio is contin-
ued or canceled after the paper is fed into the tray.  

When the operation is continued, 50 sheets are delivered in a stack without stapling and the 51st sheet is delivered by itself.  And, the second stapling
papers also delivered by itself. 

When the operation is canceled, 50 sheets are delivered in a stack without stapling and operation is finished.  

When staple-free stapling is specified, the paper stack that is center-aligned by the processing tray is moved to the staple-free stapling position by the
front alignment plate and assist guide. The paper stack is clinched by the clinch arm.

The clinch arm's home position is detected by the Clinch home position sensor (FNPS15).

After power ON, the finisher controller PCB drives the Clinch motor (FNM9) to return the clinch arm to the home position. If the clinch arm is at the
home position to begin with, it remains there and waits.

Clinch errors are detected using clock pulses from the Clinch motor drive detection sensor (FNPS13).

The staple-free staple unit is fixed in place in the rear of the finisher. Only a single stapling position is used, which is at the rear. Stapling at four loca-
tions (upper left, upper right, lower right, lower left) is possible using the host machine's LUI through image processing of the printed surface.

After staple-free stapling, the paper stack is shifted to the center by the front and rear alignment plates and then delivered.

Stapling capacity

Small size (A4, B5, LTR, 16K, 
EXEC)

52 to 81.4g/m2: 50 sheets
More than 81.4 to 105 g/ m2: 30 sheets
More than 105 to 256 g/m2: 2 sheets

- Heavy: 5.5 mm or less
- In cover mode, this includes two heavy cover 
sheets.

Large size (A3, B4, A4R, 11X17(279 
x 32 mm), LGL, LTR-R, 8K)

52 to 81.4g/m2: 30 sheets
More than 81.4 to 105 g/ m2: 20 sheets
More than 105 to 256 g/m2: 2 sheets

Stapler shift motor 

(FNM7)

Stapler Unit

Stapler shift 

home position 

sensor (FNPS11)

MX-FN27, MX-PN14  OPERATIONAL DESCRIPTION  6 – 13

The clinch arm moves down to clinch when the cam driven by the Clinch motor (FNM9) rotates once. The wavy upper teeth of the clinch arm is
pressed against the lower teeth to crimp the paper together.

The cam's home position is detected by the Clinch home position sensor (FNPS15).

If the Clinch home position sensor (FNPS15) is off, the finisher controller PCB runs the Clinch motor (FNM9) until the Clinch home position sensor
(FNPS15) turns on and resets the cam to its initial state.

If an error occurs in the staple-free staple unit, a jam code is displayed on the host machine's operation panel, and the operation stops. The limited
function message of the staple-free stapling is shown on the host machine's operation panel, at the same time.

When a jam occurs again, a trouble code is also sent to the host machine. 

– Number of sheets that can be clinched

The number of sheets that can be stapled exceeds the upper limit of the number of sheets that can be stapled, select whether the operatio is contin-
ued or canceled after the paper is fed into the tray.  

When the operation is continued, 5 sheets are delivered in a stack without stapling and the 6th sheet is delivered by itself.  And, the second stapling
papers also delivered by itself. 

When the operation is canceled, 5 sheets are delivered in a stack without stapling and operation is finished.  

Stapling capacity

55 to 64 g/m2: 5 sheets or less
More than 64 to 81.4 g/m2: 4 sheets or less
More than 81.4 to 105 g/m2: 3 sheets

- Stapling a mix of same width is only available.
- Stapling a mix of different widths is not possible.

Clinch home position sensor (FNPS15)

Clinch motor drive 

detection sensor (FNPS13)

Clinch motor (FNM9)

Front Alignment Plate 

Rear Alignment  

Plate 

Assist Guide 

Clinch Arm 

Clinch Arm 

Cam 

Lower Teeth 

Clinch home position sensor (FNPS15)

Clinch motor (FNM9) 

Upper Teeth 

MX-FN27, MX-PN14  OPERATIONAL DESCRIPTION  6 – 14

The paper in the processing tray is delivered in stacks using the assist guide and assist claw.

The assist guide supports the trailing edge of the paper stack, and the assist claw pushes out to eject the stack.

The assist guide's home position is detected by the Assist home position sensor (FNPS7).

The assist guide and assist claw are moved to the stack delivery position by the rotating assist motor They are returned to their home positions by the
Assist motor (FNM5) rotating in reverse.

Normally in non-sort or shift-sort mode, paper aligned and shifted on the processing tray is divided every five sheets and delivered. If the sixth sheet
is the last sheet, the last sheet is included to create a six-sheet stack and delivered.

The following table shows the number of divided delivery sheets depending on the paper type, paper size, and paper weight.

OHP, label, postcard, envelope, 
transparency

 -

 -

1 sheet

Recycled, pre- punched

Paper width: 210.0 mm to 297.0 mm
Paper length: 173.4 mm to 431.8 mm

 -

2 sheets

Other than above

 -

1 sheet

Other than above

Paper width: 210.0 mm to 297.0 mm
Paper length: 173.4 mm to 431.8 mm

105g/m2 or less

Paper length: 182 mm to 216 mm
Paper width 210 mm to less than 279.4 mm (16K, 
EXEC, B5)
2 sheets

Paper length: 355.6 mm (LGL) or more
2 sheets

Other than above: 3 sheets

More than 105g/m2

2 sheets

Other than above

-

1 sheet

Assist motor (FNM5)

Assist home position sensor

(FNPS7) 

Assist Guide 

Assist Claw 

Assist Claw