Datamax E4203 manual Font Loading Commands, ###D, ###W Font Descriptor, Assign Font ID Number

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Font Loading Commands

Introduction

The commands used for font loading are usually generated by font creation software; however, the assigned font ID number command must be sent to the printer before the font file. All Font Loading Commands begin with <ESC> (ASCII control character 27 [decimal]).

The downloaded font will be stored in the default module (refer to the <STX>X command). The commands in the table below are listed in their order of appearance, top to bottom, during font downloading. The <SOH>D command must be sent prior to downloading a font.

Command

Description

*c###D

Assign Font ID Number

)s#Wnn…n

Font Descriptor

*c#E

Character Code

(s#W

Character Download Data

Table 7-1: Font-Loading Commands

*c###D

Assign Font ID Number

This command is the first command required for downloading a font to either DRAM or Flash memory. Esc represents the ASCII control character 27.

Syntax:

<ESC>*c###D

Where:

###

- Is the font ID numbers 100-999. (000-099 are reserved for

 

 

resident fonts.)

)s###W

Font Descriptor

This command (typically first data in a font file) contains all of the information about the font contained in the file. Different font generation software will create different length header information, but the initial 64 bytes will remain consistent with the PCL-4 (HP LaserJet II) format.

Syntax:

<ESC>)s###Wdd…d

Where:

###

-

Is the number of bytes of font descriptor data from 1 to 3 ASCII

 

 

 

decimal digits.

 

dd…d

-

Is the descriptor.

E-Class DPL Programmer’s Manual

57

Page 67
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Datamax E4203 manual Font Loading Commands, ###D, ###W Font Descriptor, Assign Font ID Number