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No.

AR-280/285/335

AR-405

Page

Section

Content

Change

Remark

1 – 1

[1] – 1

Display change

(Refer to the section
of Touch panel in
EXTERNAL VIEW
AND INTERNAL
STRUCTURE.)

1 – 1

[1]

Without opening the document table cover, documents
can be automatically fed and copied.
The automatic document feeder provided in the
AR-285/335 allows automatic reversion of documents
for duplex copying as well as simplex copying. (The
automatic document feeder of the AR-280 allows only
simplex copying.)

Without opening the document table cover, documents
can be automatically fed and copied.
The automatic document feeder provided in the AR-405
allows automatic reversion of documents for duplex
copying as well as simplex copying.

The zooming function allows selection of the
magnification ratio from 25% to 800% in 776 steps (1%
increment). (When the automatic document feeder
(AR-280) is used, zooming from 25% to 200% in 176
steps (1% increment) is allowed.)

The zooming function allows selection of the
magnification ratio from 25% to 400% in 376 steps (1%
increment). (When the automatic document feeder.)

1 – 6

System outline (Options)

(Refer to the attached sheet.)

2 – 1

[2]

SPECIFICATIONS

(Refer to the attached sheet.)

3 – 1

[3]

Option spec

(Refer to the attached sheet.)

3 – 3

4 – 1

[4] – 1 – A

(Refer to the attached sheet.)

4 – 2

[4] – 1 – B

4 – 3

[4] – 1 – C

4 – 4

[4] – 1 – D

4 – 5

[4] – 1 – E

4 – 6

[4] – 4 – A

Manufacturing No. identification

illustration and description of Manufacturing No.
are changed.

5 – 3

[5] – 2 – C C.

Charger cleaning

•

Main charger unit electrode cleaning

1

Open the front cabinet. 

2

Press the hook section of the main charger
unit to release lock. Pull out and remove the
main charger unit from the copier body. 

illustration (Drum positioning plate shape)
change

AR-405

1/21/1999

– 1 –

No.

AR-280/285/335

AR-405

Page

Section

Content

Change

Remark

5 – 4

[5] – 2 – C

Illustration (Drum positioning plate shape)
change

•

Transfer/separation charger unit wire cleaning

•

Transfer/separation charger unit wire cleaning

1

Slightly lift the transport section open/close
lever and tilt it to the right.

1

Slightly lift the transport section open/close
lever and tilt it to the right.

2

Remove the driver transfer separation
charger fixing screw, and remove the
transfer/separation charger unit from the
copier body.

2

Remove the driver transfer separation
charger fixing screw, and remove the
transfer/separation charger unit from the
copier body.

5 – 6

[5] – 2 – 6

Illustration (Drum positioning plate shape)
change

G.

Developing unit setting

G. Developing unit setting

(1) Remove the developing unit.

(1) Remove the developing unit.

1

Open the front cabinet.

1

Open the front cabinet.

2

Tilt the developing unit lever toward you,
and pull out the toner cartridge until it stops.

2

Tilt the developing unit lever toward you,
and pull out the toner cartridge until it stops.

Printer kit AR-PB2 installation procedure added.

AR-405

– 2 –

1/21/1999

No.

AR-280/285/335

AR-405

Page

Section

Content

Change

Remark

6 – 1

[6] EXTERNAL VIEW AND INTERNAL
STRUCTURE

(Refer to the attached sheet.)

6 – 7

7 – 1

7 – 4

Two illustrations for AR-405 given.

7 – 5

Separation DC component table

illustration for AR-405 given.

illustration for AR-405 given.

7 – 6

[7] – 2 – B

illustration for AR-405 given.

7 – 7

Copy mode table

Initial value changed.

[7] – 2 – C

illustration for AR-405 given.

7 – 8

illustration for AR-405 given.

[7] – 2 – D Copy mode table

illustration for AR-405 added.

7 – 22

I. RADF

Three illustrations changed.

7 – 23

One illustration, model name of RADF in the
descriptions, and the description of the load
check mode changed.

7 – 24

Continued from the above. 

9 – 1

[9]

MAINTENANCE

(New)

  ~

(Refer to the attached sheet.)

10 – 2

[10] – 3

A. OPC drum 

illustration changed.

B. Drum separation pawl

illustration changed.

10 – 3

C. Cleaner blade

illustration changed.

F. Transfer/separation charger

illustration changed.

10 – 5

illustration changed.

10 – 6

[10] – 7

7. Laser scanner unit

illustration changed.

12 – 1

[12] – 2

Image forming section correction (process
correction) operation list

Execution conditions, operation timing

Before process correction 

*1

*1

OPC drum specified rotation time (every 20,000 sec)

Immediately after correction of main charger grid
voltage (*1)

OPC drum specified rotation time (every 20,000 sec)

Immediately after correction of main charger grid
voltage (*1)

The developing bias voltage correction is made over
the specified level immediately after developing bias
voltage correction. (*1)

OPC drum specified rotation time is changed to (16,600
sec).

OPC drum specified rotation time is changed to (16,600
sec).

AR-405

1/21/1999

– 3 –

No.

AR-280/285/335

AR-405

Page

Section

Content

Change

Remark

12 – 2

[12] – 3 – B

[mW]

Laser beam power

5

10

15

20

25

30

35

Photoconductor drum correction counter

1 count: 20,000 sec (Photoconductor drum rotation time) (AR-280/285/335)

16,600 sec (Photoconductor drum rotation time) (AR-405)

0.2mW(max) (AR-280/285/335)
0.16mW(max) (AR-405)
Laser beam power correction value(

D

LPc1)

[v]

Main charger grid voltage correction value

5

10

15

20

25

30

35

Photoconductor drum correction counter

1 count: 20,000 sec (Photoconductor drum rotation time) (AR-280/285/335)

16,600 sec (Photoconductor drum rotation time) (AR-405)

95v (AR-280/285/335)
64v (AR-405)
Main charger grid voltage correction value

AR-405

– 4 –

1/21/1999