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

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Viewing Illuminant Printed colors undergo a hue shift when viewed under different illuminations (for example, fluorescent, tungsten, or daylight). Colors with spectral characteristics outside the range of an illumination source are not received, changing the appearance of mixed colors. The Viewing Illuminant command (?*i#W) supports communication of standard illuminations to the printer to allow the printer to compensate for different lighting conditions when appearance matching. Viewing Illuminant Command The Viewing Illuminant command specifies the relative white point used in the determination of a viewing illuminant condition. ?*i#W[binary data] # = Number of binary bytes of data Default = 8 Range = 8 (command is ignored for invalid values; signs in the value field are ignored The binary data field is formatted as follows: Byte 15 (msb) 8 7 (lsb) 0 Byte 0 x chromaticity white point (lsw) 1 2 x chromaticity white point (msw) 3 4 y chromaticity white point (lsw) 5 6 y chromaticity white point (msw) 7 The above firnat adheres to the IEEE floating point format as follows: 31 30 23 22 0 Sign Exponent Fractional Portion D-18 Modifying Output Color (Color LaserJet, 5, 5M, DeskJet) EN
The PCL default viewing illuminant is D65 (6500K). Below is a table of viewing illuminants and their chromaticity values. Illuminant x chromaticity y chromaticity Daylight (D65) (6500K) 0.3127 0.3290 Tungsten (3200K) 0.4476 0.4074 Cool White Fluorescent (5630K) 0.3904 0.3914 This command affects only device-independent color. The command acts like a state variable: it is ignored for White/Black, Device RGB, or Device CMY palettes, but it becomes active when a new CID command specifies a device-independent color space. EN Modifying Output Color (Color LaserJet, 5, 5M, DeskJet) D-19
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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
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B Using Color Modes (Color LaserJet
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HP-GL/2 Imaging Mode In HP-GL/2, th
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The Simple Color palettes are shown
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Common 6-Byte Header The short and
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You need one plane or one bit/pixel
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Example: ?*v6W 00 01 04 04 04 04 #
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Example: ?*v6W 00 03 00 08 08 08 #
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Short Form of CID Command (Configur
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Page 221 and 222: Note Although the data ranges may e
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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
Page 255 and 256: Halftone Render Algorithms The HP c
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: Gamma Correction Color monitors, wh
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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