HP Pcl 5 Manual
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ENInternal Fonts 7-11 Internal Fonts Internal fonts are those fonts that are provided with the printer. Both internal bitmap and scalable font formats are provided. Internal bitmap and scalable fonts and symbol sets for current models of HP LaserJet family printers are listed in Chapter 2 of the PCL 5 Comparison Guide. Font and symbol set listings for earlier printer models can be found in the User’s Manual for each printer. Special Effects HP PCL 5 printers allow you to create special effects when printing characters. These effects are achieved through the use of the print model feature, or through the use of HP-GL/2 vector graphics (refer to Chapter 13, The PCL Print Model or to the HP-GL/2 information in Chapters 17-23). The print model provides a simple means for printing patterned or shaded characters using the printer’s predefined cross-hatch/shading patterns, or user-defined patterns. HP-GL/2 vector graphics provide the additional ability to print characters in any direction (angle) on a page, and to print outlined characters. HP-GL/2 also allows anisotropic (non-linear) scaling of scalable fonts which produces characters that are stretched in one direction.
ENIntroduction 8-1 8 PCL Font Selection Introduction Several characteristics identify a font (as described in Chapter 7, Fonts). Font characteristic selection commands, described in this chapter, are used to specify the desired font characteristics for printing. Commands are included for the following characteristics: symbol set, spacing, pitch, height, style, stroke weight, and typeface family. The printer maintains a font select table in its operating code that contains the characteristic values of the current font. Whenever the printer receives a font select command (escape sequence) specifying a new characteristic value, the printer records that characteristic in the table. After the table is updated (receives new characteristic values), and text is ready to be printed, the printer performs a font select. The printer searches the available fonts and scalable typefaces to select one that matches (or most closely matches) the characteristics as listed in the font select table. NoteA font must be in the printer to be selected for printing!
8-2 PCL Font SelectionEN Font Selection Priority The printer selects a font based on a prioritization of its design characteristics, then its resolution, then its physical location in the printer, and finally, its orientation. Font selection priority considerations are shown in the following list: When selecting a font, the printer compares the highest priority characteristic in the font select table to the corresponding characteristic of the available fonts. If only one font is available that matches, that font is selected. If several fonts match, the printer compares the next highest priority characteristic to the corresponding characteristic of the available fonts and so on down the list. When only one font remains, that font is selected. However, if after comparison of all the font design characteristics, more than one font still remains, then the resolution and location are considered.Font Priority Considerations Symbol Set Spacing Pitch Height Style Stroke Weight Typeface Family Resolution 1 Location2 Orientation 1. Bitmap fonts designed at 600 dpi are not available for selection at 300 dpi. In 600 dpi mode, font priority is as follows: 600 dpi bitmap, scalable, 300 dpi bitmap. 2. Although location is not a font characteristic, it is a font selection consideration. highest | | | | | | | | lowest
ENIntroduction 8-3 There are four locations where a font may be stored: printer ROM (Read Only Memory), SIMM module ROM, cartridge ROM, and printer RAM (random access memory; user memory). These font locations are shown below, listed from the highest to lowest priority. The font that matches the characteristics is selected from the highest priority location. NoteIn 600 dpi mode: A 600 dpi font has priority over a 300 dpi font. For example, a 600 dpi bitmap soft font is highest, then a scalable soft font, followed by a 300 dpi bitmapped soft font. Finally, for bitmap fonts, the orientation of a font is considered. If there are two fonts which are similar in all the above characteristics and which reside at the same location, the font with the orientation that matches the orientation of the page is selected. If only one font remains and its orientation is different than the current page, the printer rotates the font to the orientation of the page. (“Summary of Font Selection by Characteristic” on page 23, later in this chapter, summarizes font selection by characteristic.) Priority of Locations Soft Font (Lowest ID first) Highest Cartridge Font 1 1. In printers with two cartridge slots, one slot has priority over the other. Refer to Appendix E of the PCL 5 Comparison Guide for cartridge slot priority information for the different HP LaserJet printers. | SIMM Font | Internal Font Lowest
8-4 PCL Font SelectionEN Font Select Table The initial font specification in a job should be made using all of the font characteristics. To select a Roman-8, fixed-spaced, 10 pitch, 12 point, upright, bold, Courier font, for the current page orientation, specify each of the characteristics using font selection escape sequences. Once the characteristics have been specified, the font select table appears as follows: To subsequently select a font with the same characteristics differing only in one aspect, only the single characteristic must be specified. For example, to select a font differing only in stroke weight (in this case, medium rather than bold), the printer’s font select table could be changed as follows:Symbol Set Roman-8 Spacing Fixed Pitch 10 cpi Height 12 point Style Upright Stroke Weight Bold Typeface Family Courier Symbol Set Roman-8 Spacing Fixed Pitch 10 cpi Height 12 point Style Upright Stroke Weight MediumÍ Typeface Family Courier
ENPrimary and Secondary Fonts 8-5 At a minimum, only the characteristics of the new font that differ from those of the previously designated font must be sent (the short font selection method). However, HP recommends that all of the characteristics be sent to ensure that the correct font is selected. NotePCL 5 printers can print any number of distinct fonts per page, limited only by available memory. Primary and Secondary Fonts The printer maintains two independent font select tables for use in selecting a primary font and a secondary font. All of the characteristics previously described apply to both tables. This provides access to two distinct fonts, only one of which is selected at a given time. To alternate between the primary and the secondary font, the control codes ‘‘SI’’ (Shift In; ASCII 15) is used to designate primary and ‘‘SO’’ (Shift Out; ASCII 14) is used to designate secondary. The factory default state is primary font designated. Font Resolution With the introduction of the LaserJet 4 printer, fonts can be printed at 600 dpi resolution. All scalable fonts automatically print at either 300 or 600 dpi resolution. A bitmapped font which was designed at 300 dots-per-inch can be printed on the LaserJet 4 printer at 600 dpi. However, a bitmapped font which was designed at 600 dpi is not available for selection at 300 dpi resolution.
8-6 PCL Font SelectionEN Symbol Set Command The Symbol Set command identifies the specific set of symbols in a font. “Symbols” are the alphanumeric, punctuation, or any other printable characters or symbols which may be included. E C ( ID Primary Symbol Set Command ID = Symbol Set ID value (see Appendix C in the PCL 5 Comparison Guide) E C ) ID Secondary Symbol Set Command ID = Symbol Set ID value (see Appendix C in the PCL 5 Comparison Guide). Default =8U Range =N/A If the specified symbol set does not exist, Roman-8 is selected (However, the specified symbol set is written into the font select table.) NotesThe factory default primary and secondary symbol set is Roman-8. However, you may select a user default symbol set from the printer control panel (see the printer User’s Manual). If the font is a scalable typeface, symbol set is determined from the values contained in the printer’s font selection table. To specify a different symbol set, send a symbol set selection command prior to the Font Selection ID command. (Also see “Font Selection by ID Command,” later in this chapter.)
ENSymbol Set Command 8-7 A few symbol sets are listed below. For a more complete list, refer to Appendix C in the PCL 5 Comparison Guide. NoteUser-defined symbol sets are supported in some HP LaserJet printers. To specify a user-defined symbol set, use the symbol set ID value as defined by the Symbol Set ID Code Command. See Chapter 10 for more information. Example To specify ASCII as the symbol set for the primary font, send: E C(0U To specify Roman-8 as the symbol set for the secondary font, send: E C)8UTypical Symbol Set Values Symbol Set Name Symbol Set ID ISO 69: French 1F ISO 8859-1 Latin 1 (ECMA-94) 0N ISO 6:ASCII 0U Legal 1U Roman-8 8U PC-8 10U 3 of 9 Barcode 0Y Windows 3.1 Latin 1 (ANSI) 19U
8-8 PCL Font SelectionEN 7-bit ISO Symbol Sets The HP LaserJet printers provide several 7-bit ISO (International Organization for Standardization) or “keyboard” symbol sets to support European languages. Each ISO symbol set is a unique ordering of symbols contained within the Roman-8 symbol set (see Appendix B in the PCL 5 Comparison Guide). The printer automatically generates the requested ISO font from an HP Roman-8 font.