Dascom DP-520 Kullanıcı Kılavuzu - Sayfa 7

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The DT-520 utilizes a Fujitsu FTP-628MCL103 printer mechanism, with a fixed (parallel) print head with

384 horizontally-arranged thermal elements. The paper is advanced by a stepper motor, and printing

takes place in a single dot row for each step of the paper. Each printed dot is approximately 0.005"

square. The printing speed and dot density are controlled according to the power supply voltage and the

head temperature.

Various printing modes, including graphics, are invoked by 'Escape' sequences. Control codes and

status report protocols are described in detail in the Programmer's Manual.

The printer has a nominal 20k byte buffer to optimize throughput: this enables data to be received into the

buffer while previous lines are being printed. Printing will be initiated on receipt of a valid logical line of

data or a complete graphics pattern.

The buffer may be cleared by data command or by a hardware reset. A partially full line will be printed on

receipt of an appropriate control code, or after a programmable timeout delay.

Spooling mode can be entered by:

a command from the host;

Paper Out condition or Paper Lid open condition being sensed;

an error condition (e.g. head over temperature, power supply over voltage, etc).

In spooling mode, the buffered data are stored without being printed until the mode is exited by:

a command from the host;

the 'causing condition' (e.g. Paper Out or Paper Lid open) being cleared;

the paper feed button being double-clicked.

The default 32-column character set is formed from a 24x10 dot matrix, and is based on the industry

standard IBM® character set Code Page 437. This character set has been modified to include the Euro

symbol ('€') at position 80H (128 Decimal), in place of the usual capital C with cedilla ('Ç').

Various combinations of single or double width, single or double height, inverted, underlined, and other

attributes may be mixed within a line.

Customized fonts may be created using a font editor utility, and downloaded to the printer. Only a single

custom font may be loaded in the printer at one time. Contact Dascom Technical Support for more

information on the font editor utility.

Various dot-addressable graphics modes are supported, at up to 384 dots per line. The Windows driver

operates in the graphics mode. Refer to the Programmer's Manual for full details of this and other

advanced programming modes.

PRINTER OPERATION AND PROGRAMMING