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The Driver Configuration command provides a way for a driver to calibrate the output by adjusting color lightness, saturation, and color map information. All of these methods of modifying output color are explained in the following sections. D-2 Modifying Output Color (Color LaserJet, 5, 5M, DeskJet) EN
Halftone Render Algorithms The HP color printers have the capability of applying different halftone render algorithms to achieve the desired output on the printed image. Render algorithms allow you to change the characteristics of the image by changing the way pixels are rendered. Each halftone render algorithm produces a different affect on the output, varying the texture and color appearance of the printed image. To choose the type of rendering to be used, use the Render Algorithm command, described below. This command allows you to choose one of the existing rendering algorithms or to choose a user-defined pattern created with the Download Dither Matrix command. Render Algorithm Command The Render Algorithm command selects the algorithm to be used for rendering page marking entities on a given page. ?*t#J # = 0 - Continuous tone (device best dither) 1 - Snap to primaries 2 - Snap black to white, color to black 3 - Device best dither 4 - Error diffusion 5 - Monochrome device best dither 6 - Monochrome error diffusion 7 - Cluster ordered dither 8 - Monochrome cluster ordered dither 9 - User-defined dither 10 - Monochrome user-defined dither 11 - Ordered dither 12 - Monochrome ordered dither 13 - Noise ordered dither 14 - Monochrome noise ordered dither 15 - Continuous tone smooth 150 lpi EN Modifying Output Color (Color LaserJet, 5, 5M, DeskJet) D-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
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Transfer Raster Data by Plane This
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End Raster Graphics Command The End
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Destination Raster Width The Destin
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8 Specify the raster compression mo
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Figure 6-7 Example of Raster Graphi
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Looking at the PCL commands, you'll
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7 Color Vector Graphics (HP-GL/2) I
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� The ?%#A command closes HP-GL/2
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Redefining the PCL Picture Frame si
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Opcode — Specifies the logical op
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The “PC;” command defaults the
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NP (Number of Pens) The NP command
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CR (Color Range) The CR command set
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Figure 7-1 Pixel Placement EN Color
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A Color Printing Overview (Color La
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Color Concepts This section describ
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Example: Assuming the white and bla
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Encoding by Pixel When encoding by
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Cluster Ordered Dither ( ?*t7J, ?*t
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With proper calibration, any device
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Illumination Models Illumination so
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Color Processing Functions Given th
Page 203 and 204: B Using Color Modes (Color LaserJet
Page 205 and 206: HP-GL/2 Imaging Mode In HP-GL/2, th
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: D Modifying Output Color (Color Las
Page 257 and 258: Ordered Dither and Clustered Ordere
Page 259 and 260: A user-defined matrix is defined in
Page 261 and 262: Format This byte should be set to 0
Page 263 and 264: Byte 15 (msb) 8 7 (lsb) 0 Byte 0 Fo
Page 265 and 266: Color Lookup Tables Color lookup ta
Page 267 and 268: As shown below, the 256 point-by-po
Page 269 and 270: Gamma Correction Color monitors, wh
Page 271 and 272: The PCL default viewing illuminant
Page 273 and 274: Driver Configuration Command This c
Page 275 and 276: No Adjustment This setting provides
Page 277 and 278: Setting Description MapID Out of Ga
Page 279 and 280: Index A adaptive compression block
Page 281 and 282: transparency mode 5-2 user-defined
Page 283 and 284: Set Pattern Reference Point command
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