Ricoh B230 Service Manual

Stacking for Booklet Stapling 
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previous section). 
When the stack is complete, the stapler moves to the rear-side position, and stopper L 
moves away. The machine feeds the stack to the correct position for stapling.  

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2.10  MOVING THE STACK TO THE FOLDING POSITION 
 
First, the upper clamp roller feeds the stack down after the stack has been stapled. When 
the lower clamp roller [A] catches the stack, the upper clamp roller stops, and the lower 
clamp roller feeds the stack down. 
The lower clamp roller is released just before the leading edge of the stack reaches the 
bottom fence [B] (this fence consists of two pawls that catch the paper). The bottom fence 
moves the stack to the folding position 
The...

Folder 
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2.11 FOLDER 
2.11.1 OVERVIEW 
The fold plate pushes the stack into the nip between the fold rollers. The fold rollers feed 
out the stack, then reverse to feed it back in again. Then, the fold rollers feed the stack out 
of the folder, to the booklet tray. 
2.11.2 FOLD PLATE 
 
[A]: Bottom Fence Stack Stoppers. Catches the stack after it is released by the clamp 
rollers. 
[B]: Fold Plate Motor. Drives the timing belt and gears that move the fold plate. 
[C]:...

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2.11.3 FOLD ROLLERS 
 
[F]: Fold Roller Motor. Drives forward to feed out the stack at the fold, and then drives 
forward again to feed out the folded stack.  
 
ƒ  This cycle can be repeated by changing the setting of SP6136.  
[G]: Fold Rollers. Driven by the fold roller motor, this roller pair feeds out the stack at its fold, 
reverses to feed in the stack to, and then feeds forward again (assisted by the fold unit exit 
rollers – not shown) to feed out the stack to the lower tray.  

Punch Unit 
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2.12 PUNCH UNIT 
2.12.1  OVERVIEW OF OPERATION 
Skew Correction Before Punching 
 
The finisher entrance roller corrects for paper skew and then the punch unit moves across 
to punch the holes at the correct position. Each sheet is punched one at a time. 
Paper feeds out of the copier. The finisher entrance sensor [A] detects the leading edge of 
the sheet. 
The finisher entrance roller [B] stops rotating briefly while the copier exit rollers continue to...

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Punch Unit Position Correction 
 
These operations (skew correction before punching, and punch unit position correction) 
increase the accuracy of the punch alignment. 
  
The trailing edge of the sheet passes the finisher entrance sensor [A]. 
The paper position slide unit moves the paper position sensor [B] forward to the edge of the 
paper. 
The paper position sensor detects the position of the paper edge and sends this information 
to the punch unit board. The machine uses the detected...

Punch Unit 
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These SP codes adjust the punch hole alignment:  
ƒ  SP6128 Adjusts the punch positions in the direction of paper feed. 
ƒ  SP6129 Adjusts the punch position perpendicular to the direction of feed. 
For more, see Section 5. Service Tables. 
2.12.2 PAPER POSITION DETECTION 
 
The paper position sensor slide motor [A] extends and retracts the paper position slide that 
holds the paper position sensor [B].  
The paper position sensor detects the position of...

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2.12.3 PUNCH UNIT MOVEMENT 
 
The punch movement motor [A] extends and retracts the punch unit to put it at the correct 
position for punching.  
The punch movement HP sensor [B] detects the position when it retracts, switches off the 
punch movement motor, and stops the punch unit at its home position. 
The punch drive motor [C] fires the punches that punch holes in the paper below. 
2.12.4 PUNCH SELECTION AND FIRING 
 
The punch drive motor [A] turns the small, notched encoder wheel [B]...

Punch Unit 
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The timing for 2-hole punching [E] is different from 3-hole punching [F]. 
When the punch unit is at the punching position, the punch motor turns until the encoder 
detects the starting position for 2-hole or 3-hole punching. 
ƒ  This is the ‘1’ position in the diagrams (the first diagram is for 2-hole punching, and the 
second diagram is for 3-hole punching). 
Then, the punch drive motor turns counter-clockwise to the ‘2’ position. This movement...

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The punch hopper full sensor [B] does the following: 
ƒ  Signals that the hopper is full when it detects the top of the stack of punchouts that 
have collected in the hopper. 
ƒ  Detects when the punch hopper is set properly.