Interfaces; Input Data Buffer; Parallel Interface; Table 1-12. Print Speed - Epson FX-870 Service Manual

Type of letters
High-speed draft
Draft pica
Draft elite
Condensed draft pica
Emphasized draft pica
NLQ normal pica
Notes: 1. The printing speed for high-speed drafl is reduced to the value in 'I( )" with
thick paper (over 0.007 inches or 0.18 mm).
2. The printing speed for high-speed draft is reduced to the value of "draft
pica" when any graphic character is in the line.
3. The printing speed for draft is reduced to the value in 'I[ I" when any italic
character is in the line.
4. The speed for high-duty printing is reduced to approximately half of each
speed, except for the printing speed in "[ I".

Input Data Buffer

24K or OK bytes (selectable with power on default settings; see Pouter On Default
Settings, later in this chapter.)

Interfaces

This printer has a built-in, 8-bit Centronics parallel interface.

Parallel Interface

Data transmission mode
Synchronization
Handshaking
Logic level
Connector plug
It is recommended that the interface cable be as short as possible ( 10 feet or 3 meters,
maximum).
Epson FX-870/1170
Controlled by external STROBE pulse.
Controlled by ACKNLG and BUSY signals.
TTL-compatible
57-30360 (Amphenol) or equivalent
Printer Features
Print speed [cps]
380
285
342
243
142
57
1-13