42114101 Rev.1
37 /
2.2.4 Ribbon drive (See Figure 2-6.)
The ribbon driver mechanism moves the ribbon in synchronization with the space motor operation.
The ribbon drive mechanism consist of the following items:
(a)
Ribbon drive gear assembly
(b)
Ribbon gear (space motor)
(c)
Ribbon cartridge
(1)
Ribbon cartridge
An endless ribbon with a single direction feed is used. Ink is supplied from an ink tank,
which is built in to the ribbon cartridge.
(2)
Ribbon feed operation
When the space motor is activated, the ribbon gear rotates. The rotation is transmitted
via the ribbon drive gear assembly to the drive gear in the ribbon cartridge, thus moving
the ribbon.
The feed direction of the ribbon is maintained by switching the rotational direction of the
gears in the ribbon drive gear assembly. This ensures ribbon movement when bidirectional
printing is used.
Summary of Contents for ML490 Series
Page 1: ...42114101 Rev 1 1 135 ML490 491 PRINTER Maintenance Manual ODA...
Page 2: ...42114101 Rev 1 2...
Page 38: ...42114101 Rev 1 38 Drive gear Ink tank Ribbon cartridge Figure 2 6...
Page 48: ...42114101 Rev 1 48 Change arm Change lever Platen Release cam Figure 2 13 REAR TOP BOTTOM...
Page 96: ...42114101 Rev 1 96 9 Carriage Assy NK2 10 SUS Bearing portion of guide roller EM 30L B...
Page 119: ...42114101 Rev 1 119 6 8 9 7 1 2 3 11 10 4 5 Figure B 2 Printer General Assy...
Page 124: ...42114101 Rev 1 124 9 12 11 1 13 3 7 1 14 5 6 7 2 10 8 Figure B 4 Carriage Assy...
