PCL 5 Color Technical Reference Manual - Business Support ...

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Introduction The PCL printer language has four color modes: Black-and-White Simple Color PCL Imaging HP-GL/2 Imaging PCL allows you to use any mode or combination of modes to accomplish your printing objectives most efficiently. All four of the color modes create a palette. The palette for each mode is discussed in the section describing that mode, and also in Appendix C (“Using Palettes”). Black-and-White Mode (Default) Black-and-White Mode is the default color mode. PCL devices power up in this mode and revert back to it whenever the printer receives an ?E reset. Black-and-White mode is also selectable using the Simple Color command (?*r1U). This mode creates an unmodifiable, default 2-pen palette, with white at index 0 and black at index 1 (compatible with existing monochrome PCL 5 printers). Simple Color Mode Simple Color Mode, entered by the Simple Color command (?*r#U), creates a fixed-size, fixed-color, unmodifiable palette. Depending on the value field, ?*r#U can create a 2-pen Black-and-White palette, an 8-pen RGB palette, or an 8-pen CMY palette. When using the Simple Color mode, the pixel encoding mode is always indexed planar. PCL Imaging Mode PCL Imaging Mode, enabled by the Configure Image Data command (?*v#W), allows a maximum of 24 bits per pixel for color specification. Therefore, more colors (produced by halftoning) may be specified than are obtainable in Simple Color Mode. In the PCL Imaging Mode, pixel encoding mode, bits per pixel, bits per primary, white/black references, and the color palette are all programmable. B-2 Using Color Modes (Color LaserJet, 5, 5M, DeskJet) EN
HP-GL/2 Imaging Mode In HP-GL/2, the Initialize (IN) command starts color imaging and performs the following: Sets the pixel encoding mode to index by plane. Sets bits per index to 3. Creates an 8-pen palette that is reprogrammable in either PCL or HP-GL/2 contexts (see Appendix C, “Using Palettes,” for more information). Although default HP-GL/2 palettes are different than default PCL palettes, an HP-GL/2 palette is modifiable in either PCL or HP-GL/2 (using the Assign Color Index [?*v#I] or Pen Color [PC] commands, respectively). Likewise, a PCL palette created by the Configure Image Data command (?*v#W) is modifiable in both PCL and HP-GL/2 using the same commands. The active palette is always transferred between HP-GL/2 and PCL contexts. Since only one palette at a time can be active, a new palette created in either context overwrites the current palette. EN Using Color Modes (Color LaserJet, 5, 5M, DeskJet) B-3
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PCL 5 Color Technical Reference Man
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Inside This Manual What You Can Lea
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Chapter 7. Color Vector Graphics (H
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Contents PCL 5 Color Technical Refe
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Rectangular Fill Examples. . . . .
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Programming Color Palettes . . . .
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1 Color Printing Overview Introduct
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The PCL language also allows users
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Note HP’s ICC profiles are availa
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� An RGB, eight-entry palette wit
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Well-Behaved Raster PCL raster imag
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2 Using Color Modes Introduction Th
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Simple Color Mode The Simple Color
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PCL Imaging Mode The PCL Imaging mo
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Byte 1 (Pixel Encoding Mode) This b
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PEM 1: INDEXED BY PIXEL In this mod
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MODE 3: DIRECT BY PIXEL This mode s
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HP-GL/2 Imaging Mode The HP-GL/2 Im
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3 Using Palettes Introduction A pal
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Saving the Palette The current pale
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Palette Management by ID All palett
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When a palette creation command is
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Palette Control The Palette Control
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Simple Color Palettes The Simple Co
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CID Color Palettes The Configure Im
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HP-GL/2 Palettes Regardless of the
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Foreground Color All PCL marking en
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Programming Color Palettes Except f
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4 Modifying Output Color Introducti
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Monochrome Printing The Monochrome
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Screen Match Due to the emergence o
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5 The PCL Print Model Introduction
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Pattern Transparency Mode—The tra
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Figure 5-3 Effect of Transparency M
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Source Transparency Mode Command Th
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Logical Operations The basic print
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Assuming three bits per pixel, the
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Logical Operation Command Specifies
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Table 5-1. RGB ROP Truth Tables ROP
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Note Since PCL logical operations a
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Table 5-4. Logical Operations (ROP3
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Figure 5-5 Pixel Placement Note The
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Pixel Placement Command Determines
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Pattern ID (Area Fill ID) Command T
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Figure 5-8 Cross-Hatch Patterns EN
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User-Defined Pattern Graphics In ad
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Figure 5-10 Pattern Layout Across t
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Figure 5-11 Moving Pattern Referenc
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Continuation (Byte 1) This field, b
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When using the 300 dpi User-Defined
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Set Pattern Reference Point Command
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Rectangular Area Fills (Rules) Rect
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Vertical Rectangle Size (PCL Units)
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Note The current pattern is not app
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This example is a monochrome exampl
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7 Select the white fill and print.
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5 Print the rectangular shaded area
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6 Raster Graphics Introduction A ra
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This pixel format is sufficient to
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An image’s width and height defin
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The emphasis in the previous comman
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Figure 6-2 Raster Graphics Expansio
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Raster Presentation Mode Orientatio
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Source Raster Height Command The Ra
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Source Raster Width Command The Ras
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Start Raster Graphics Command The S
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Raster Y Offset Command The Raster
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The Set Compression Mode command ha
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Note Another method to calculate th
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The command byte identifies two thi
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The seed row is updated by every ra
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The size of a block is limited to 3
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Adaptive Compression Operation Hint
Page 153 and 154: Transfer Raster Data by Plane This
Page 155 and 156: End Raster Graphics Command The End
Page 157 and 158: Destination Raster Width The Destin
Page 159 and 160: 8 Specify the raster compression mo
Page 161 and 162: Figure 6-7 Example of Raster Graphi
Page 163 and 164: Looking at the PCL commands, you'll
Page 165 and 166: 7 Color Vector Graphics (HP-GL/2) I
Page 167 and 168: � The ?%#A command closes HP-GL/2
Page 169 and 170: Redefining the PCL Picture Frame si
Page 171 and 172: Opcode — Specifies the logical op
Page 173 and 174: Table 7-1. Logical Operations (ROP3
Page 179 and 180: The “PC;” command defaults the
Page 181 and 182: NP (Number of Pens) The NP command
Page 183 and 184: CR (Color Range) The CR command set
Page 185 and 186: Figure 7-1 Pixel Placement EN Color
Page 187 and 188: A Color Printing Overview (Color La
Page 189 and 190: Color Concepts This section describ
Page 191 and 192: Example: Assuming the white and bla
Page 193 and 194: Encoding by Pixel When encoding by
Page 195 and 196: Cluster Ordered Dither ( ?*t7J, ?*t
Page 197 and 198: With proper calibration, any device
Page 199 and 200: Illumination Models Illumination so
Page 201 and 202: Color Processing Functions Given th
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Page 207 and 208: The Simple Color palettes are shown
Page 209 and 210: Common 6-Byte Header The short and
Page 211 and 212: You need one plane or one bit/pixel
Page 213 and 214: Example: ?*v6W 00 01 04 04 04 04 #
Page 215 and 216: Example: ?*v6W 00 03 00 08 08 08 #
Page 217 and 218: Short Form of CID Command (Configur
Page 219 and 220: Long Form of CID Command (Configure
Page 221 and 222: Note Although the data ranges may e
Page 223 and 224: Byte 15 (msb) 8 7 (lsb) 0 Byte 22 x
Page 225 and 226: Byte 15 (msb) 8 7 (lsb) 0 Byte 22 E
Page 227 and 228: Examples Using the CID Command The
Page 229 and 230: LONG FORM CID(2,3,0,8,8,8 0.62, 0.3
Page 231 and 232: C Using Palettes (Color LaserJet, 5
Page 233 and 234: Saving the Palette The current pale
Page 235 and 236: Palette Management by ID All palett
Page 237 and 238: This command can be used to de-sele
Page 239 and 240: Palette Control The Palette Control
Page 241 and 242: Simple Color Palettes The Simple Co
Page 243 and 244: CID Color Palettes The Configure Im
Page 245 and 246: Device CMY and Device-Independent P
Page 247 and 248: Eight Pens Pen Number Color 0 White
Page 249 and 250: Note Foreground color interacts wit
Page 251 and 252: Color Component Three This command
Page 253 and 254: D Modifying Output Color (Color Las
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Halftone Render Algorithms The HP c
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Ordered Dither and Clustered Ordere
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A user-defined matrix is defined in
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Format This byte should be set to 0
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Byte 15 (msb) 8 7 (lsb) 0 Byte 0 Fo
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Color Lookup Tables Color lookup ta
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As shown below, the 256 point-by-po
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Gamma Correction Color monitors, wh
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The PCL default viewing illuminant
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Driver Configuration Command This c
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No Adjustment This setting provides
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Setting Description MapID Out of Ga
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Index A adaptive compression block
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transparency mode 5-2 user-defined
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Set Pattern Reference Point command
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