Application Development Information; How To Control The Printer; Selecting A Driver - Epson TM-T20 Technical Reference Manual

Application Development Information

This chapter describes how to control the printer and gives information useful for printer
application development.

How to Control the Printer

Use a driver or ESC/POS commands to control the printer.

Selecting a Driver

Choose one of the drivers listed in
operating environment. You cannot control a single printer with more than one driver.
For information about the driver operating environment, see the installation manual for each
driver.
When you newly develop an application
• Use APD if you want to print TrueType fonts or print many graphics.
• OPOS ADK is recommended for system extensibility. An OPOS driver is provided for various
peripherals and it is a POS industry standard now. It enables POS system efficiency, reduction
of development cost, and effective use of application assets.
You can use all functions, including ones not supported by OPOS ADK or APD, by using
ESC/POS commands through your driver. Use the DIRECT I/O function of OPOS ADK, the
control A command of APD, or Status API to send ESC/POS commands from each driver.
(See
"Printer Drivers" on page
"ESC/POS command functions" on page
Chapter 3 Application Development Information
56, depending on the application
50.)
3
49