HP 1200c, 4 FAMILY, 4000, 5 FAMILY, 6 FAMILY, III, IIID, IIIP Memory Usage

5

Memory Usage

Introduction

In some situations, the amount of available memory for printing pages may be smaller than that required for printing. To make more effective use of the available printer memory, newer HP PCL 5 printers incorporate new methods for managing memory. This smaller amount of available memory is made more usable by:

Memory Enhancement technology, MEt, (available on all HP LaserJet 6, LaserJet 5, and LaserJet 4 family printers except the 4, 4M, 4Si and 4SiMx)

Adaptive Data Compression, ADC, (available on HP LaserJet 4, 4M, 4Si, 4SiMx and DeskJet 1200C printers)

Following recommended practices for transmitting data, especially raster graphics, to the printer

For the HP LaserJet 4L, using Raster Graphics Adaptive Compression (PCL compression mode five)

All HP LaserJet 4, 5 and 6 family printers have internal programming for optimizing the use of limited memory. HP LaserJet 4, 4M, 4Si, 4SiMx, and DeskJet 1200C printers compress raster graphics data using a system called Adaptive Data Compression or ADC. The other HP LaserJet 4 / 5 / 6 printers use MEt to compress not only raster graphics data, but also to compress fonts, improve memory usage for page protection, and provide an overall improvement in memory efficiency. Both systems operate automatically and without any intervention from the user.

The HP Color LaserJet printer has memory management features similar to MEt, but has additional features for color processing.

Memory Usage 5-1

Contents

PCL 5 Comparison Guide Warranty Printing Information Conventions Bold Note Contents 1 Printer Features 2 Printer-SpecificDifferences Contents-2 Internal Typefaces/Fonts and Symbol Sets Print Environment Memory Usage A Printer Commands B Internal Symbol Set Charts Page Printer Features Page PCL Feature Support Notes PCL 5 Technical Reference Manual Corrections Chapter PCL Job Control Table 1-1.PCL 5 Feature Support Matrix Table 1-1.PCL Feature Support Matrix (continued) Table 1-1.PCL 5 Feature Support Matrix (continued) Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Printable Area Page Page Printer-SpecificDifferences HP LaserJet IIISi Printer Table 2-1.PCL Feature Additions for HP LaserJet IIISi Printer Feature Status Comments Table 2-2.HP LaserJet IIIP PCL Feature Additions Feature/Command Raster Graphics Adaptive Compression (IIIP) HP LaserJet 4 Printer Table 2-3.PCL Feature Additions for HP LaserJet Table 2-3.PCL Feature Additions for HP LaserJet 4 (continued) Configuration Command (AppleTalk) ?&b#W [key]<sp>[value] Default [key] [value] RENAME ?&b#WRENAME<sp>printername JOB ?&b#WJOB<sp>jobname TYPE ?&b#WTYPE<sp>devicetype HP LaserJet 4Si Printer HP LaserJet 4L Printer HP LaserJet 4ML Printer Table 2-4.PCL Feature Additions for HP LaserJet 4ML Logical Operations Definitions Operators Operands and Transparency Interactions Case 1: Case 2: Case 3: Case 4: Logical Operation Command ?*l#O Example: Table 2-5.Logical Operation (ROP3) Bits Texture Source Table of Logical Operations Table 2-6.Logical Operations (ROP3) Input Value Boolean Function Table 2-6.Logical Operations (ROP3) continued Page Page Page Pixel Placement Command ?*l # R Figure 2-1.Pixel Placement Placement Variations Figure 2-2.Pixel Placement Variations Pixel Placement Command (HP-GL/2) PP [mode] ; Pixel Placement Command (HP-GL/2) Parameter Format Functional Range Merge Control Command (HP-GL/2) MC [mode, [opcode] ] ; MC1,60; MC1,60-; MC1,+60; MC1,60+; opcode Common Opcodes Desired Destination Values Pattern Pixel Transparency HP LaserJet 4P and 4MP Printers HP LaserJet 4PJ Printer Table 2-8.PCL Feature Additions for HP LaserJet 4PJ Text Parsing Method Command ?&t#P Default Character Text Path Direction Command ?&c#T Range = 0 Font Header Format New Font Format Header Segments Galley Character Segment Vertical Substitution Character Segment Typeface String Segment Vertical Rotation Segment Table 2-9.Printer Segment Support for Font Format Segment LJ 4PJ LJ 4V LJ 4LC Data Segment Size Byte 15 (MSB) (LSB) GC (18243) Default Galley Character (UI) Number of Regions (UI) Data Segment Size (12) Default Galley Character = 0xFFFF Number of Regions (n) Region #1 Upper Left Character Code Vertical Substitution Segment TF (21574) Data Segment Size (2*n+2) Embedded Font Substitute String Name Flag Page MS Mincho Size (10) Name Flag Length Substitute String Character List Page The structure of the Vertical Rotation Segment is: VR (22098) Data Segment Size (4) Format (0) Descender value Descender value = -36/256* ScaleFactor Where: ScaleFactor is Bytes 64 and 65 from the Font Format 16 Font Header The structure of the Character Enhancement Segment is: CE (17221) Data Segment Size (8) Bit Position (#) = Stroke Weight HP LaserJet 4PJ Programming Tips General Print Job Initialization Font Metric Calculation where: PCL 5 Technical Reference Manual Unit of Measure HalfWidthDeltaX FullWidthDeltaX Character Enhancements Vertical Writing Printing Ruby Characters (Furigana) furigana Page Vertical Underlining Page Vertical Clusters Page Paper Size DIMENSIONS (at 300 DPI - double for 600 DPI) HP LaserJet 4 Plus and 4M Plus Page HP LaserJet 4V and 4MV Printers Font Header Format 16 Bitmap Font Support Table 2-10.Format 15 and Format 16 Font Header Table 2-11.Format 15 Segmented Font Data Table 2-12.Format 16 Segmented Font Data Header Format Scale Factor Master Underline Position Master Underline Thickness Font Scaling Technology Font Type First Code Last Code Bitmap Resolution Data Segment Table 2-13.Bitmap Resolution Data Segment X Resolution (unsigned long integer) Y Resolution (unsigned long integer) Character Definition Limitations HP Color LaserJet Printer PCL 5 Color Technical Reference Manual PCL 5 Color Technical Reference Manual Table 2-14.PCL Feature Additions for HP Color LaserJet Printer Table 2-14.PCL Feature Additions for HP Color LaserJet Printer (continued) AppleTalk Configuration ZONE ?&b#WZONE<sp>zonename HP LaserJet 4LJ Pro Printer HP LaserJet 4LC Printer HP LaserJet 5P and 5MP Printers HP LaserJet 5L Printer HP LaserJet 5Si and 5SiMx Printers Table 2-15.PCL Feature Additions for HP LaserJet 5Si/5SiMx Printers Paper (Media) Source Command commands are provided below ?&l#H #= 0 - Print current page (source is unchanged) 1 - Tray 2 (upper drawer) Value (#) LaserJet 4 LaserJet LaserJet 5Si 4 Plus Output Bin Command ?&l#G Alphanumeric ID Command &n#W Operation Description Sets the current Font ID to the given String ID. This operation allows Associates the current Font ID to the font with the String ID supplied Deletes the macro association named by the current Macro ID Media select (see media selection table) Media Type Paper Size Paper Source Size/Type Used Example: Using the Alphanumeric ID Command to Download a Font Example: Using a Font with a String ID Page HP DeskJet 1200C Printer Table 2-16.PCL Feature Additions for HP DeskJet 1200C Printer The DeskJet 1200C printer does not support the following LaserJet 4 features: Unit of Measure (?&u#D) Updated Features Two-Byte Fonts Noise Dither Arbitrary Dither Matrix Sizes Enter HP-GL/2Mode Command ?%#B Media Type Command ?&l#M Print Quality ?*o#Q Negative Motion Command ?&a#N HP DeskJet 1600C Printer Table 2-17.PCL Feature Additions for the HP DeskJet 1600C Printer Simplified Control Panel IEEE-P1284 Energy Star Out-of-Ink Sensing MIO PJL Print Modes EconoFast Presentation Graphics. Best quality graphics Normal Media Source Command Compression Method Command Method 9 (Replacement Delta Row Encoding) Control Bit Offset Count Replacement Count Page HP LaserJet 5 and 5M Printers Table 2-18.PCL Feature Modifications for HP Color LaserJet 5 and 5M Printers Text Parsing Two-Byte HP-GL/2Support Label Mode Syntax: Comments: MODE Row Number Notes: Vertical Writing with Proportional Fonts Examples: HP Color LaserJet 5 and 5M Printers Render Algorithm Command ?*t#J HP LaserJet 6P/ 6MP Printers HP LaserJet 4000 Series Printers Internal Typefaces/Fonts and Symbol Sets Bitmap Fonts and Symbol Sets Table 3-2.Bitmap Symbol Sets Symbol Set1 ISO 57 Chinese2 ISO 8859/1 Latin 1 (ECMA-94) Scalable Typefaces and Symbol Sets Table 3-3.Scalable Intellifont Typefaces Table 3-4.Scalable TrueType Typefaces Times New Roman Symbol MS Mincho Med1 Table 3-5.Scalable Symbol Sets Printer ISO 8859/1 Latin Table 3-5.Scalable Symbol Sets (continued) HP LaserJet Printer Page Page Table 3-7.TrueType Typeface Symbol Set Support Table 3-7.TrueType Typeface Symbol Set Support (continued) Typeface Selection Differences vendor number vendor version typeface family value Typeface Values Family Typeface Family Base Family Ignores typeface Selected (value field too large) Base Print Environment Table 4-1.Factory Default Environment — PCL Context JOB CONTROL Number of Copies1 Duplex1 Off (Simplex) Table 4-1.Factory Default Environment — PCL Context (continued) FONTS Symbol Set2,6 Spacing6 Fixed PRINT MODEL RECTANGULAR AREA FILL PICTURE FRAME MACRO TROUBLESHOOTING Table 4-2.Factory Default Environment — HP-GL/2Context CHARACTER GROUP VECTOR GROUP POLYGON GROUP Table 4-2.Factory Default Environment — HP-GL/2Context (continued) LINE AND FILL ATTRIBUTE GROUP CONFIGURATION AND STATUS GROUP Page Table 4-3.User Default Environment Page Table 4-3.User Default Environment (continued) Memory Usage Operation of ADC and MEt Image Adapt Image Adapt Additional MEt Features ADC and MEt Notes Recommendations For Sending Data to the Printer Ordered Images Band Sizes Separation of Images Rectangular Images Avoid Tall, Narrow Images Wide Patterns Avoid Many Small Polygons Raster Graphics Adaptive Compression (Method 5) Page Printer Commands Table A-1 Page Page Page Page Table A-1.HP PCL 5 Commands (continued) Page Page Page Page Page Page Page Page Page Page Page Table A-2. HP-GL/2Commands Table A-2. HP-GL/2Commands (continued) Page Page Table A-3.Control Codes Page Internal Symbol Set Charts Page DeskTop (DT) Roman-8(R8) ISO 8859/1 Latin 1 (E1) Windows 3.1 Latin 1 (W1) PC-850Multilingual (PM) PC-8Code Page 437 (PC) MC Text (MC) PS Text (TS) PC-8Danish/Norwegian (PD) Ventura International (VI) Legal (LG) Ventura US (VU) Microsoft Publishing (PG) Windows 3.0 Latin 1 (WO) PC-Turkish(PT) PC-852Latin 2 (PE) Windows 3.1 Latin 2 (WE) ISO 8859/2 Latin 2 (E2) Windows 3.1 Latin (WT) ISO 8859/9 Latin 5 (E5) PC-1004,Code Page 1004 (PU) PC-775,Code Page 775 (PV) Windows Baltic (WL) ISO 8859/10 Latin 6 (E6) Math-8(M8) Ventura Math (VM) PS Math (MS) Pi Font (PI) Wingdings Font (L$) Symbol Font (AS) PS ITC Zapf Dingbats (DS) Ventura ITC Zapf Dingbats (DV) ITC Zapf Dingbats series 200 (D2) ITC Zapf Dingbats series 100 (D1) ITC Zapf Dingbats series 300 (D3) ISO Substitution Table Table B-1.ISO Substitution Characters Conversion Table Table B-2. Roman-8Character Conversion Table B-2. Roman-8Character Conversion (continued) Page Page Page Page Page Page Symbol Set and Typeface Codes Page Table C-1.Symbol Set Values Page Table C-1.Symbol Set Values (continued) Table C-2.Typeface Family Values Vendor Name Typeface Vendor Value Table C-3.Typeface Base Values Table C-3.Typeface Base Values (continued) Page Page Page Page Page Page Page Page Page Page Page Page Page Index Index-1 Index-2 Index-3 Index-4