Graphics mode initial settings ; Hard clip limits; Horizontal plot size- Page 10

Brother HL-1470N Command Reference Guide for Software Developers

Table of Contents

Technical Reference Guide
GLOSSARY
background image

 

 v

Fixed spacing

 See 

monospacing. 

 

Font

 

A collection of characters that are designed to work in harmony together.  A font 
has several characteristics that identify it uniquely:  character or symbol set,  
spacing, pitch, height or point size,  style,  stroke weight and typeface.  Fonts can 
either be resident in the printer's ROM,  installed on cartridge or downloaded  from 
your computer.  You can either buy downloadable fonts commercially or create 
your own.  The word "font" is often wrongly used to mean "typeface".  A font is 
confined to a single height or point size whereas a typeface is not. 

 

Font descriptor

 

A block of data that is downloaded to the printer as the first part of a downloaded 
font.  The font descriptor describes the characteristics that are common to every 
character in the font,  such as stroke weight,  and contains other relevant 
information. 

 

Graphics mode initial settings 

The HP-GL and HP-GL/2 mode settings that are in effect when you enter HP-GL 

and HP-GL/2 mode.  You can restore the initial conditions using the IN; command. 

 

Graphics units

 

The default units of the HP-GL and HP-GL/2 coordinate system.  Also sometimes 
called plotter units. 

 

Graphics window

 

The area on the page in which HP-GL and HP-GL/2 graphic images can appear.  
Initially this is the same as the picture frame,  but you can change the size,  position 
and aspect ratio of the graphics window using the IW command. 

 

Gray scale

 

A degree of continuous shading ranging from 0%,  white, to 100%, black. 

 

Hard clip limits

 

The area of the page on which it is physically possible to print using HP-GL and 
HP-GL/2 graphics language commands.  The hard clip limits are determined by the 
size of the physical page and are equivalent to the LaserJet mode printable area. 

 

Hatching

 

A method of shading using parallel lines. 

 

Height

 

The height in typographic points (1/72" units) of an unaccented capital letter in a 
font. 

 

HMI

 

Horizontal motion index.  The horizontal distance that the print position moves 
across the page when any single character is printed ( in a monospaced font ),  or 
when a space character is printed ( in a proportionally spaced font ).  You can set 
the HMI using printer commands,  however,  when you alter any font characteristic 
( in effect,  select a new font ) or switch between the primary and secondary fonts,  
the HMI is reset to its default value based on the newly selected font. 

 

Horizontal plot size

 

The original horizontal size of an imported HP-GL and HP-GL/2 image. 

 

Internal font

 

A font that is stored in the printer ROM and is therefore always available for use,  
for example,  Brougham 10 pitch,  or a font generated from a scalable typeface 
stored in the printer's ROM,  for example,  Tennessee bold 15 pt. 

 

Isotropic scaling

 

A form of image scaling using the SC command in HP-GL or HP-GL/2 mode in 
which the user units must be of equal size.  Hence it may not be possible to use the 
entire graphics window to display the image. 

 

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