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RN SERIES TECHNICAL BULLETIN
Data Category Field Modification Trouble-Shooting General Information Safety Advice
DISTRIBUTED TO : All Distributors DATE : 13 April, 2001
MODEL : All "RN" models ISSUE
: RNT-013 Our Ref.: C1-1218
NO.
Proceeding Grade Parts Compatibility Handling of Modified Parts
Action ASAP Compatible Free of Charge
Action as given below Conditionally Compatible Conditionally Chargeable
Action if required Not Compatible Chargeable
Refer in need Old Obsolete
SUBJECT: 021-16075-205 Ink Cartridge Guide (Bottom)
Brief:
One of the plastic boss with screw hole is made 1 millimeter longer.
Reason:
The modification is to prevent the ink dripping from the nozzle of the Ink Bottle.
Looking through the tunnel made by the Ink Cartridge Guide (Top) and Ink Cartridge Guide (Bottom), when
joined together, the inner bottom surface of the tunnel should be either flat (level) between the Ink Cartridge
Guides (Top) and (Bottom), or Ink Cartridge Guide (Bottom) higher than the (Top). This allows smooth
insertion of the Ink Bottle though the tunnel.
If the Ink Cartridge Guide (Bottom) is lower than the Ink Cartridge Guide (Top) at the bottom inner surface of
the tunnel, the Ink Bottle will hit the ridge and will not allow smooth Ink Bottle insertion.
If the front edge of the Ink Bottle, during the insertion, knocks against the ridge made at the junction point of
the Ink Cartridge Guide (Top) and (Bottom), the ink tends to spill out from the nozzle of the Ink Bottle.
Though the spill (drip) of the ink may be little, the amount of the ink spill may add up if it is repeated.
To add to the knocking action, if there is a high ridge, the machine operator will insert the ink bottle with more
force or speed necessary to insert the Ink Bottle in place. This too much force or speed will cause the
nozzle of the Ink Bottle to hit hard against the ink intake nozzle of the Drum. This impact of the two nozzles
will also cause the ink to drip down from the nozzles.
The Ink Bottle must be inserted slowly and gently through the Ink Cartridge Guides to prevent the ink spillage.
Modification:
The plastic boss on the Ink Cartridge Guide (Bottom), with the screw thread inside, is made 1 millimeter
longer to ensure that when the Ink Cartridge Guides (Top) and (Bottom) are joined, both are either flat
against each other or the Ink Cartridge Guide (Bottom) is higher.
021-16074-004
Ink Cartridge Guide (Top)
DRUM
021-16075-205
This plastic boss with the screw thread inside, is made 1 millimeter longer. Ink Cartridge Guide (Bottom)
The other boss is at the same height as the previous part.
Issued By Overseas Technical Sec., Riso Kagaku Corp.
Page 2 of 2
RN SERIES TECHNICAL BULLETIN
ISSUE NO. : RNT-013
Field modification:
If the Ink Cartridge Guide (Bottom) on the machine in the field is an old type, and if it is lower than the Ink
Cartridge Guide (Top) within the tunnel, it is recommended that the part be replaced, or following field
modification be made.
Add a small diameter washer of the thickness of about 1 millimeter on the plastic boss of the Ink Cartridge
Guide (Bottom), as shown on the illustration and photograph below.
Adding 1 millimeter washer in that particular one boss will have the same effect as replacing whole Ink
Cartridge Guide (Bottom) to the new modified part.
Insert one washer
(thickness = 1 millimeter)
021-16074-004
Ink Cartridge Guide (Top)
OLD PART
021-16075-108
Ink Cartridge Guide (Bottom)
Application Serial No.
RN2130UI ........ 85130553 RN2100EP ...... 85150241 RN2050AW ..... 85250103
RN2030UI ........ 85221168 RN2000EP ...... 85200097 RN2130AS ...... 85140033
RN2000UI ........ 85430001 RN2150EP ...... 85080048 RN2030AS ...... 85210063
RN2150UP ...... 85070001 RN2050EP ...... 85270051 RN2180C ......... 85420031
RN2050UP ...... 85280001 RN2150AN ...... 85110011 RN2080C ......... 85410077
RN2150EN ...... 85090001 RN2050AN ...... 85240044
RN2050EN ...... 85260001 RN2150AW ..... 85100035
Issued By Overseas Technical Sec., Riso Kagaku Corp.