Tube-number record
PRINTER-TYPE CATHODE RAY TUBE
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BrandRaytheon
ClassCathode Ray Tube
BaseDuodecal
Filament6.3 V @ 600 mA
Construction
Primary TypeOther / special
EnvelopeGlass
SectionsSingle row printing element
Filament / Heater
Heater NotesVoltage +/- 10%
Absolute Maximum Ratings
Plate Voltage25000 V
Plate Dissipation6 W
Grid 2 Voltage700 V
Grid 1 Voltage-180 V
H-C Voltage180 V
Audio Performance
Key Features
- High-resolution gun
- High-current gun
- Deposits electrostatic charge on paper
- High speed printing capability
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Typical | 20000 V | — | — | — | 0.2 mA |
Application Notes
The printing element consists of fine wires imbedded in glass. Characters are formed by electron charges on paper acting as a dielectric, developed via positively charged ink.
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