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HP 1200 HP PCL/PJL reference - PCL 5 Comparison Guide - Page 201

Avoid Non-Raster Commands, Separation of Images, Rectangular Images, Avoid Unnecessary Print Model Use

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• Avoid Non-Raster Commands - During the transmission of sequential raster bands non-raster commands should be avoided. This includes cursor positioning commands. • Separation of Images - If more than one image or picture is to be printed on a page, it is best to keep them separate. Separation consists of assuring that the new image starts with a new start raster command and that the one image does not exactly follow the next image (separate the image by at least one line vertically and sixteen pixels horizontally). This constraint improves the operation of Image Adapt. • Rectangular Images - All HP LaserJet 4 family printers perform best if raster images are sent as rectangular images to the printer. This entails keeping the right margin of the image constant and keeping all lines the full image width (no lines are truncated). Also, avoid skipping lines. When whole blank lines appear in the image, either send zeroed data row(s) or use the Raster Y-Offset command. • Avoid Unnecessary Print Model Use - Print model modes, other than source and pattern transparent, degrade memory efficiency. (This restriction is not true for the HP Color LaserJet printer.) For best results do not use an opaque source unless there is an image known to already be on the page in the same area. Following the other rules listed in this section minimizes the impact of using non-transparent print model modes. • Avoid Tall, Narrow Images - For ADC, images which are taller than they are wide by more than eight to one disable the printer's ability to automatically separate images upon the page (this restriction is not true for the HP Color LaserJet printer). This violation is desirable in the case where the above rules are violated and multiple images are rendered as one image and sent to the printer as one combined image. Sending raster data as a checkerboard with non-full width bands sent left to right and top to bottom also disables the printer's automatic image separation. In general, for all HP LaserJet printers, tall, narrow images should be avoided since they typically require more memory. ENWW Memory Usage 5-5

Section	Page
Main Menu	3
Manual Conventions	5
Contents	7
Printer Features	11
Introduction	11
PCL Feature Support	13
PCL 5 Technical Reference Manual Corrections	15
Printable Area	46
Printer-Specific Differences	49
Introduction	49
HP LaserJet III and IIID Printers	49
HP LaserJet IIISi Printer	50
HP LaserJet IIIP Printer	50
Raster Graphics Adaptive Compression (IIIP)	52
HP LaserJet 4 Printer	52
Configuration Command (AppleTalk)	55
HP LaserJet 4Si Printer	58
HP LaserJet 4L Printer	59
HP LaserJet 4ML Printer	60
Logical Operations	61
Logical Operations and Transparency Interactions	63
Logical Operation Command	64
Pixel Placement Command	72
Pixel Placement Command (HP-GL/2)	75
Merge Control Command (HP-GL/2)	76
HP LaserJet 4P and 4MP Printers	78
HP LaserJet 4PJ Printer	79
Text Parsing Method Command	80
Character Text Path Direction Command	81
Font Header Format 16	82
New Font Format Header Segments	83
Description of Font Header Segments	84
HP LaserJet 4PJ Programming Tips	96
Paper Size	107
HP LaserJet 4Plus and 4M Plus Printers	108
HP LaserJet 4V and 4MV Printers	109
Font Header Format 16 Bitmap Font Support	110
Font Header Format	110
Character Definition	115
Limitations	116
HP Color LaserJet Printer	117
AppleTalk Configuration Command	118
HP LaserJet 4LJ Pro Printer	119
HP LaserJet 4LC Printer	119
HP LaserJet 5P and 5MP Printers	120
HP LaserJet 5L Printer	121
HP LaserJet 5Si and 5SiMx Printers	122
Paper (Media) Source Command	123
Output Bin Command	125
Alphanumeric ID Command	126
HP DeskJet 1200C Printer	132
Updated Features	133
Enter HP-GL/2 Mode Command	134
Media Type Command	135
Print Quality Command	136
Negative Motion Command	137
HP DeskJet 1600C Printer	138
HP LaserJet 5 and 5M Printers	144
Text Parsing	144
Two-Byte HP-GL/2 Support	145
Label Mode Command	145
Vertical Writing with Proportional Fonts	148
HP Color LaserJet 5 and 5M Printers	150
HP LaserJet 6P/ 6MP Printers	152
HP LaserJet 5Si Mopier	152
HP LaserJet 6L and LaserJet 6L Gold Printers	153
HP LaserJet 4000 Series Printers	153
HP LaserJet 5000 Series Printers	155
HP LaserJet 8000 Series Printers	157
HP LaserJet 8100 Series Printers	158
HP Color LaserJet 4500 Series Printers	159
Simplified Color Management	159
Color Raster Images	160
Asian Font Support	160
Media Handling	160
Alphanumeric ID Command	162
Color Space Support	162
Changes to PCL 5 Color Commands	162
New PCL 5 Commands	165
Differences with the HP LaserJet 4000 Series Printers	166
HP Color LaserJet 8500 Series Printers	167
HP LaserJet 1100 Series Printers	168
HP LaserJet 2100 Series Printers	168
Internal Typefaces / Fonts and Symbol Sets	171
Introduction	171
Bitmap Fonts and Symbol Sets	172
Scalable Typefaces and Symbol Sets	174
Typeface Selection Differences	183
Print Environment	185
Introduction	185
Memory Usage	197
Introduction	197
Operation of ADC and MEt	198
Image Adapt	198
Additional MEt Features	199
ADC and MEt Notes	199
Recommendations For Sending Data to the Printer	200
Raster Graphics Adaptive Compression (Method5)	203
Printer Commands	205
Introduction	205
Internal Symbol Set Charts	229
Introduction	229
ISO Substitution Table	262
Conversion Table	263
Symbol Set and Typeface Codes	271
Introduction	271
MSL/Unicode Symbol Indexes	293
Introduction	293

Match case Limit results 1 per page

ENWW

Memory Usage 5-5

•

Avoid Non-Raster Commands

— During the transmission of

sequential raster bands non-raster commands should be

avoided. This includes cursor positioning commands.

•

Separation of Images

— If more than one image or picture is

to be printed on a page, it is best to keep them separate.

Separation consists of assuring that the new image starts with

a new start raster command and that the one image does not

exactly follow the next image (separate the image by at least

one line vertically and sixteen pixels horizontally). This

constraint improves the operation of Image Adapt.

•

Rectangular Images

— All HP LaserJet 4 family printers

perform best if raster images are sent as rectangular images

to the printer. This entails keeping the right margin of the

image constant and keeping all lines the full image width (no

lines are truncated). Also, avoid skipping lines. When whole

blank lines appear in the image, either send zeroed data

row(s) or use the Raster Y-Offset command.

•

Avoid Unnecessary Print Model Use

— Print model modes,

other than source and pattern transparent, degrade memory

efficiency. (This restriction is not true for the HP Color LaserJet

printer.) For best results do not use an opaque source unless

there is an image known to already be on the page in the same

area. Following the other rules listed in this section minimizes

the impact of using non-transparent print model modes.

•

Avoid Tall, Narrow Images

— For ADC, images which are

taller than they are wide by more than eight to one disable the

printer's ability to automatically separate images upon the

page (this restriction is not true for the HP Color LaserJet

printer). This violation is desirable in the case where the above

rules are violated and multiple images are rendered as one

image and sent to the printer as one combined image.

Sending raster data as a checkerboard with non-full width

bands sent left to right and top to bottom also disables the

printer's automatic image separation. In general, for all

HP LaserJet printers, tall, narrow images should be avoided

since they typically require more memory.