Epson LQ-800 Manuel d'utilisateur

Tables5-1LQ character widths . . . . . . . . . . . . . . . . . . . . . . . .5-105-2International characters in Letter Quality mode . .5-165-3Internati

If you are using the serial interface on the LQ, then you need tocheck switches 2-3, 2-4, 2-5, and 2-6 to make sure the settings matchthose on your co

Table A-1. DIP switch panel 1SwitchNo.ON OFFSee TableFunctionExplanationThese three switches select theInternational character sets shown inTable A-3

Table A-2. DIP switch panel 2SwitchNo.FunctionON OFFExplanation2-1Select 11 -inch or12”11”The LQ must know the length of12-inch paperpaper being used

Table A-3. International DIP switch settings*Country1-11-21-3USAONONONFrance ON ONOFFGermany ON OFFONUKON OFFOFFDenmarkOFFONONSwedenOFFON OFFItalyOFFO

Appendix BThe LQ Character Setand ASCII TableThis table shows the three LQ character sets: Draft, Letter Quality,and Proportional. The table also show

Dee32333435363738394041424344454647484950515253545556575859606162636465666768697071727374#$%&,()*+'B-2Hex Draft LQ Prop.2021!!22aa"I23 #

DecHex Draft LQ Prop.Dec Hex Draft11775 uUU1227A z11876 vVV1237B -{11977 wWW1247c |12078 xXX1257D }12179 YY Y1267E ~LQ Prop.zZ{ {|} }~ ~DecHex Abbrev.

Dec193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223Hex Draft LQ Prop.Cl A A AC2 B B BC3 C C CC4 D D DC5 E

Appendix CInstalling the Option CartridgeThe option cartridge for the LQ lets you change typestyles, extendthe capabilities the printer, or use progra

Figure C-2. Installing an option cartridgeThe Identity ModuleThe identity modules can enhance the LQ’s capabilities or give it the“personality” of ano

IntroductionThe Epson LQ-800 and LQ-1000 are state-of-the-art, X-pin dot-matrix printers that deliver exceptional speed and sharpness in eitherLetter

An identity module can be used with a font module or by itself.Bach identity module comes with a blank font module plugged into it.If you use an ident

Using the Option CartridgesWhen installing an option cartridge, you must turn the power OFF,plug in the cartridge, then turn the power ON again so tha

Appendix DTroubleshooting and MaintenanceThis appendix presents solutions for possible problems, explana-tions of the LQ’s advanced features, and main

ProblemRecommendationNothing is printedMake sure the printer is switchedON, and that the power source isON.Check the connection between theprinter and

ProblemRecommendationThe file is printed with an extrablank line between each line of textSome of the characters printed donot match those in the file

Trying againAfter you have checked the troubleshooting list, turn the printerOFF then back ON again to register any new settings of DIP switches.Then

Therefore, if you run the following BASIC program while your LQis in the hex dump mode, you get the printout below it. The printerwill print all but t

following test program lets you check to see what codes, if any, areproblems for your software. This program is in BASIC; use an equiv-alent program f

The 255 is a special number that prevents the computer system frominserting a CR - LF into the line. Unless, of course, there’s one in yourprogram.The

QX-10® and QX-16 SolutionsThe format for the WIDTH statement for the Epson QX-10 andQX-16 computers is:WIDTH LPRINT 255MaintenanceTo keep your LQ work

l The compact design and light weight of the LQ make it ideal forhome and business applications.lA 7K buffer frees your computer so you can work on o

Next, remove the dust cover and ribbon cartridge (see Chapter 1 formore information), and slide the print head to the middle of theprinter. Unlock the

Figure D-2. Removing the ribbon cablesInstalling the new print headConnect the ribbon cables to the black connector blocks by gentlypushing the ends o

Appendix EWidths of theProportional CharactersThis table lists the widths of the LQ’s proportional characters. Thevalues given are in 360ths of an i

Table E-1. Proportional character widths (continued)E-2

Table E-1. Proportional character widths (continued)E-3

Table E-1. Proportional character widths (continued)E-4

Appendix FThe Parallel and Serial InterfacesThe LQ-800/1000 printers have both parallel and serial interfaces tocommunicate with the computer; this ap

Table F-1. Pins and signals (continued)Signal ReturnDirec-PinPinSignaltion1230PEOUT13—SLCTOUT14—AUTOINFEEDXTDescriptionA HIGH signal indicates that th

3. All interface conditions are based on TTL level. Both the rise andthe fall times of each signal must be less than 0.2 microseconds.4. Data transfer

Table F-2 refers to the relations among ON-LINE, SLCT-IN input,DCl/DC3 and interface signals.Table F-2. Printing enabled/disabled signals and control

Chapter 1Setting Up Your LQ PrinterSetting up your new LQ is easy. Simply follow the steps in thischapter.NoteThe LQ-800 and LQ-1000 are essentially t

Serial InterfaceConnector pin assignments and a description of respective interfacesignals are shown in Table F-3.Table F-3. Pins and signalsPin No. S

Appendix GChoosing and Setting UpOptional InterfacesThis appendix summarizes the Epson interfaces compatible with theLQ-800 and LQ-1000 printers and g

Internally Mounted Interface CardsBefore you can install these you need to take off the upper half ofthe printer case to get to the main circuit board

4. Using a Phillips screwdriver, remove the retaining screws on theupper half of the printer case. There are two screws on the LQ-800as shown in the d

6. On the underside of the printer cover, at each end of the controlpanel, are two plastic retaining clips as shown in the diagrambelow. Reach under t

Installing an Interface Board1. Remove the upper case of the printer, following the steps describedin the previous section.2. Remove the plastic piece

6. Connect the frame ground wire to the FG terminal on the interfaceboard, as shown in the diagram. On the LQ-1000, there are threescrews.Figure G-4.

computer and interface to match. If you have installed the interfaceyourself but are unsure of the settings, consult your dealer.If you need to alter

Table G-3. Baud rate settings for 8149baud rateswitch 2-5switch 2-6switch 2-7switch 2-8300ONOFFONOFF600ONOFFOFFON1200ONOFFOFFOFF2400OFFONONOFF4800OFFO

Appendix HTechnical SpecificationsPrintingPrinting methodPin configuration Printing speed Paper feed speed Printing direction Character sets . . . .B

Figure 1-1. The LQ-800Figure 1-2. The LQ-10001-2

Characters per line:PicaPica double-widthEliteElite double-widthFifteenCondensedCondensed eliteCondensed double-width picaMaximum characters per lineL

PrinterRibbon . . . . . . . . . . . . . . . . . Cartridge ribbon, blackRibbon life expectancy . . . . 2 million charactersMCBF . . . . . . . . . . . .

Dielectric strength . . . . . . . .No trouble when 1 kilovolt (R.M.S.)50 or 60 Hz is applied for more than 1minute between AC power line andchassisPar

Appendix ICommand SummaryThis appendix lists the default settings of the LQ. It also contains allof the control codes and ESCape sequences used by the

Commands in Numerical OrderThe following list shows the control codes and ESCape sequencesthat the LQ uses along with their decimal values.78910111213

ESC63ESC64ESC65ESC 66ESC 67ESC 67ESC 68ESC69ESC70ESC71ESC72ESC74ESC75ESC76ESC77ESC78ESC79ESC 80ESC81ESC 82ESC 83ESC83ESC84ESC85ESC87ESC 89ESC 90ESC 92

Commands by FunctionThis section describes all the LQ control codes. They are divided inthe following way:Print QualityCharacter WidthPrint Enhancemen

Print QualityESC xSelect Print QualityFormat:ASCII code:ESCDecimal :27Hexadecimal: 1Bx (n)120 (n)78 (n)Comments:n = 0 selects draft moden = 1 s

DC2Cancel Condensed ModeFormat:ASCII code:DC2Decimal:18Hexadecimal: 12Control:CTRL RComments:Cancels compressed printing set by SI or ESC SI.soFormat:

DC4Cancel Double-Width Mode (one line)Format:ASCII code:DC4Decimal: 20Hexadecimal : 14Control:CTRL TComments:Cancels one-line double-width printing se

Remove the tape that holds the dust cover in place during shippingand take the cover off the printer. Simply tilt the dust cover up and liftit off the

ESC gSelect Fifteen WidthFormat:ASCII code:ESC9Decimal:27 103Hexadecimal: 1B87Comments:Selects 15 characters per inch, and cancels pica (10 cpi) or el

ESC GSelect Double-Strike ModeFormat:ASCII code:ESCGDecimal:2771Hexadecimal :1B47Comments:In double-strike each line is printed twice, with the secon

ESC TFormat:ASCII code:ESCDecimal: 27Hexadecimal: 1BComments:Cancels either mode.Cancel Superscript/SubscriptT8454ESC -Select/Cancel UnderliningFormat

ESC 4Select Italic ModeFormat:ASCII code:ESCDecimal :27Hexadecimal: 1B45234Comments:Causes characters to be printed in the italic character set.ESC 5C

Page FormattingMarginsESC QSet Right MarginFormat:ASCII code:ESC Q(n)Decimal:2781 (n)Hexadecimal: 1B51 (n)Comments:Sets the right margin. Also cancels

ESC NFormat:ASCII code:ESCDecimal: 27Hexadecimal: 1BComments:Select Skip-Over-PerforationN(n)78 (n)4E (n)The variable n is the number of lines skipped

ESC 0Select l/&inch Line SpacingFormat:ASCII code:ESC0Decimal :2746Hexadecimal: 1B30Comments:Sets the line spacing to l/8 of an inch for subsequen

ESC JImmediate n/180-inch Line FeedFormat:ASCII code:ESCJ(n)Decimal :2774 (n)Hexadecimal :1B4A (n)Comments:Advances the paper by one line at a spacing

ESC CSelect Page Length in LinesFormat:ASCII code:ESCC(n)Decimal:2797 (n)Hexadecimal: 1B43 (n)Comments:Sets the page length to n lines. The value of n

ESC DFormat:ASCII code:ESCDecimal:27Hexadecimal: 1BSet Horizontal TabsD (n1) (n2) ... 068 (n1) (n2) ... 044 (n1) (n2) ... 00Comments:This command all

Now that you’ve installed the paper feed knob, use it to remove thesheet of paper wrapped around the printer’s platen (the black roller).2Selecting th

ESC BSet Vertical TabsFormat:ASCII code:ESCDecimal:27Hexadecimal: 1BComments:B (n1) (n2) ... 066 (n1) (n2) ... 042 (n1) (n2) ... 00Sets up to 16 verti

Word ProcessingESC pFormat:ASCII code:ESCDecimal:27Hexadecimal: 1BComments:Select/Cancel Proportional Modep(n)112 (n)70 (n)Selects or cancels proporti

ESC (space)Select Character SpaceFormat:ASCII code:ESC (space) (n)Decimal: 2732 (n)Hexadecimal: 1B20 (n)Comments:Determines the amount of space added

ESC aFormat:ASCII code:ESCDecimal :27Hexadecimal: 1Ba (n)97 (n)61 (n)JustificationComments:This sequence selects justification as follows:n

GraphicsNote: See Chapter 6 for sample graphics programs.ESC KSelect Single-Density Graphics ModeFormat:ASCII code:ESCK (n1) (n2)Decimal:2775 (n1) (n2

ESC YSelect High-Speed Double-Density Graphics ModeFormat:ASCII code:ESCDecimal:27Hexadecimal: 1BComments:Y (n1) (n2)89 (n1) (n2)59 (n1) (n2)Turns on

ESC *Select Graphics ModeFormat:ASCII code:ESCDecimal: 27Hexadecimal: 1B* (m) (n1) (n2)42 (m) (n1) (n2)2A (m) (n1) (n2)Comments:Turns on graphics mode

User-Defined CharactersNote: See Chapter 6 for sample programs and further information.ESC &Define User-Defined CharactersFormat:ASCII code:ESCDec

MSB ControlNote: MSB control does not work for graphics data.ESC #MSB Control Sequence CancelFormat:ASCII code:ESC#Decimal :2735Hexadecimal: 1B23Comme

Other CodesBELBeeperFormat:ASCII code:BELDecimal:7Hexadecimal: 07Control:CTRL GComments:Sounds the LQ beeper for 0.1 seconds.BSBackspaceFormat:ASCII c

3Installing the RibbonWith the dust cover removed, you have easy access to theprinter for ribbon installation and paper loading. The next time youinst

DC1Select PrinterFormat:ASCII code:DC1Decimal:17Hexadecimal: 11Control:CTRL QComments:Returns the printer to the on-line mode if it has been switched

ESC EMCut Sheet Feeder ControlFormat:ASCII code:ESC EM (n)Decimal :2725 (n)Hexadecimal: 1B19 (n)Comments:Used with the optional cut-sheet feeder. When

ESC USelect Unidirectional ModeFormat:ASCII code:ESCDecimal :27Hexadecimal: 1BComments:U(n)85 (n)55(n)Selects unidirectional printing for more accurat

INDEXNote: See Appendix I for listings and descriptions of specific commandsand ESCape sequences.AAmerican Standard Code for Information Interchange.S

CCables, 1-17Cancelling codes, 5-6Centronics. See InterfaceCharacter set, shown, B-1—B-3Character string function. See CHR$ functionCHR$ function, 5-2

EElite mode, 5-5Emphasized mode, 5-10Environment, specifications for, H-3Epson computers. See QX-10 and QX-16Error warnings, D-4ESCape sequences, 5-1—

IIBM PC BASIC, D-6Initialization, 5-7Interface. See Parallel interface; Serial interfaceInternational characters, 5-15—5-17Italic mode, I-11Knob. See

PPagetop of. See Top-of-pageformatting, 5-18—5-21Panel buttons, 1-13—1-14Paperbail, 1-9, 2-1, 3-3feed knob, 1-2release lever, 1-4, 1-9separator, 3-8—3

SSelf test, 1-15Sensor. See Paper out sensorSeparator. See Paper separatorSerial Interface, 1-17, F-5, H-4DIP switch settings, A-2, A-4—A-5Setupcommer

Vertical tabs. See TabsVWWord processing, 4-1—4-2Index-7

3. For the LQ-800, hold the ribbon cartridge by the raised plastic finon top of the cartridge; for the LQ-1000 hold the cartridge by thetwo plastic ta

Print ModesCodeESC xDecHexFunction 120 78Select LQ or draft SI15 OFSelect Condensed ModeESC SIDC2soESC SO15 OFSelect Condensed Mode18 12 Cancel C

Control Codes by FunctionThe following control codes are listed briefly for quick reference, For a more detailedexplanation, see Appendix I. Variables

Table 1. DIP switch panel 1Switch No.Function1-11-2lnternational character set selection1-31-4Select input buffer capacity1-5Select printing style1-61

EPSON AMERICA, INC.LIMITED WARRANTYWhat Is Covered: Epson America, Inc. warrants that the Epson product enclosedwith this Limited Warranty conforms to

4. Now use the point of a pencil to guide the ribbon into placebetween the ribbon guide and the print head as shown in Figure1-7. (There is also a dia

EPSON®LQ-800 and LQ-1000 PrintersUser's Manual

Replacing the ribbon. . .When buying new ribbon cartridges for the LQ-800 or 1000, be sureyou get a ribbon specifically for the LQ-800 or 1000. Ribbon

The guide has rounded pins on each end. These pins fit into notcheson each end of the paper slot.Slide one of the guide’s pins into one notch. Then, w

1.Check that the dust cover is tilted up to make it easier to see insidethe printer, as shown in Figure 1-9.2. Make sure the paper release lever is pu

CautionNever use the manual paper feed knob while the power is ONbecause you can damage the paper feed motor. Always use the LINE FEED or FORM FEED bu

Adjusting the paper thickness leverThe LQ is equipped with a paper thickness lever that can beadjusted to accommodate varying thicknesses of paper.The

Plug in the printer’s power cord, making sure the outlet is properlygrounded. Turn the power ON with the switch on the left side of theprinter (see Fi

6Operating the Control PanelEach of the three buttons on the LQ control panel (see Figure1-12) has two functions-the functions marked in blue (ON LINE

ON LINE-The green ON LINE light indicates that the printer is online and ready to receive data. When the LQ is on line, you can selecteither the Lette

7Selecting the Letter Quality or Draft ModeWhen you receive your LQ, it is preset to print in the LetterQuality mode. As shown in the sample below, th

To run the self test in the Letter Quality mode, hold down theLETTER QUALITY button while you turn the power switch ON. Torun the test in the draft mo

FCC COMPLIANCE STATEMENTFOR AMERICAN USERSThis equipment generates and uses radio frequency energy and if not installed and usedproperly, that is, in

The parallel interfaceThe connector on a parallel interface cable, as shown in Figure 1-14,is secured to both the LQ and your computer by two clips. A

10Printing Your First DocumentNow that you’ve completed the basic setup and operat-ing steps, your LQ is ready to print. The following chapter explain

Chapter 2The Cut Sheet FeederThe cut sheet feeder automatically loads single sheets of paper intothe LQ, allowing you to print on letterhead, bond, or

4. Make sure the paper release lever is pushed back as shown in Fig-ure 2-1. If this lever is not pushed back, the cut sheet feeder will notfit or ope

7.Hold the cut sheet feeder assembly in two hands, and press the twocut sheet feeder release levers shown in Figure 2-1.8. Now stand directly over the

11. For the LQ-800 model, install the large bracket in the stacker asshown in Figure 2-4. Slip the legs of the bracket into the metalslots on the

Figure 2-5. The LQ-1000 modelPreparing the Paper for Loading1. The paper must be straight and clean. If the paper is slightly bent,curled or uneven, i

Loading Paper1. Align the arrow on the left paper guide with the arrow stampedinto the metal lip of the stacker, as shown in Figure 2-6.Figure 2-6. P

3. Set the stack of paper in the paper bin, aligning it against the leftpaper guide as shown in Figure 2-7. Move the right paper guideover to the edge

setting up your word processor for a cut sheet feeder. . .If you‘ve never used a cut sheet feeder before, you may have to setup your word processor ac

ContentsIntroduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intro-112Setting Up Your LQ Printer...Unpa

Printing with the Cut Sheet Feeder1. Turn the power ON with the switch on the left side of the printer, asshown in Figure 2-8.Figure 2-8. Turning the

l The red PAPER OUT light goes out while there’s paper in theprinter.l Printing begins.When the LQ finishes printing a document, you have three option

4. Hold the cut sheet feeder on each side, press the release levers asshown in Figure 2-9, and lift the unit off the printer.Figure 2-9. Removing the

TroubleshootingIf you have any difficulties operating the cut sheet feeder, check thetroubleshooting list shown below. If you continue to have difficu

ProblemTwo or more sheets of paper areloaded instead of one.Printing starts too low on the page.Printing is too close or too far fromthe left side of

Periodically, the inside of the cut sheet feeder should be cleaned toget rid of dust and paper lint. First, turn the power OFF and removethe cut sheet

Chapter 3The Tractor UnitThe tractor unit for the LQ is easy to install and use. Before youbegin the installation, make sure you have received the fol

Figure 3-2. Continuous-feed paper without standInstalling the Tractor Unit1. Remove the original dust cover that was included with your LQ.Replace it

3. Tilt the tractor unit toward you until the front latches click in placeover the front mounting pins on the printer.Loading PaperTo load continuous-

3. Using Figure 3-5 as a guide, pull the locking levers on the pin-feedholders forward so that you can move the holders to the left andright.Figure 3-

3The Tractor Unit...3-1Setting Up the LQ for Continuous-feed Paper...3-1Installing the Tractor Unit...

Figure 3-6. Opening the pin-feed covers6.Now install the paper shelf by fitting it into the two notches on theback of the printer, as shown in Figure

7.If you have an LQ-800, center the one support in the middle of thetractor as shown in Figure 3-7. If you have an LQ-1000, space thetwo paper support

9. Pull the paper up until the top is above the pin-feed holders. Fitthe holes on the left side of the paper over the pins in the leftholder (as shown

Figure 3-10. Top-of-page positionSetting the top-of-page position . . .Once you‘ve loaded continuous-feed paper into your LQ, you needto establish a t

The separator has rounded pins on each end that fit into notcheslocated just behind the tractor unit. Slide one of the separator’s pinsinto one notch,

The smoked plastic tractor cover is the finishing touch. Simplyplace it over the tractor unit, making sure the notches on the side ofthe cover fit int

Removing the Optional Tractor UnitWhen you want to remove the optional tractor unit from the LQsimply push back on the tractor release levers as shown

Chapter 4Using the LQ with Commercial SoftwareNow that you have set up and tested your printer, you can do anyof these things:l Use the printer with c

If neither one of these printers is listed, choose LQ-1500 becausethat printer recognizes virtually the same codes that the LQ-800 andLQ-1000 use. (If

Chapter 5LQ FeaturesThis chapter describes many of the printing features of the LQ. Youcan read this chapter if you wish, but you may not need to. Whe

6Graphics and User-Defined Characters...6-1Graphics...6-1The print head...6-2Dot

Some codes tell the printer to print a character, and other codes tellit to turn on or off certain printer functions, such as emphasized orLetter Qual

Even if you never use BASIC again, you will know the capabilitiesof your printer, capabilities that can often solve your printing prob-lems. For examp

Sending Control Codes to the PrinterThe short program that follows illustrates the concepts of controlcodes and ESCape sequences. This exercise may he

Basic WidthsThe first programs print characters in the LQ’s three basic widths.Further programs show you how to produce other character widthsby conde

Now run the program to produce a sample of printing in the fifteenmode.ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]ˆ_'abcdefghiLetter Quality and DraftYour LQ i

Either one of these methods returns the printer to what are called itsdefaults, which are the standard settings in effect every time you turnthe print

Print Quality CommandAlthough you can turn on the draft mode with one of the panelbuttons, you can also use a software command to switch betweendraft

As you can see in this program, double-width is another of themodes with an ESCape code that uses a letter with the numeral one toturn on the mode and

This is standard pica.This is condensed pica,This is condensed elite,By using combinations of the various width modes, the LQ canprint nine widths, wh

NEW10 LPRINT "This is standard printing."20 LPRINT CHR$(27)"E";30 LPRINT "This is emphasized printing."100 LPRINT CHR$(2

ABCDEFGHIAppendixesThe DIP Switches...The LQ Character Set and ASCII Table...Installing the Option Cartridge...

Underline modeThe LQ also has a mode that underlines characters and spaces. Youturn it on with ESCape “-1” and off with ESCape “-0”. Note thatthe unde

Notice that you must use a lowercase p, not a capital P, for thismode. The next section describes Master Select, which includesanother method for turn

To print this combination, therefore, you use ESCape “!” followedby the number 160. In the BASIC programming language the com-mand is CHR$(27)“!“CHR$(

Superscript and subscriptYour LQ can also print superscripts and subscripts, which you canuse for mathematical formulas, footnotes, and other items th

In this format n is the appropriate number from the list of interna-tional character sets. In other words, the BASIC command to selectthe French chara

Table 5-3. International characters in Letter Quality modeUSAFRANCEGERMANYUKDENMARK ISWEDENITALYSPAINJAPANNORWAYDENMARK IISPAIN IILATIN AMERICATable 5

If your keyboard does not have one of the keys that you need, youwill have to send the proper ASCII number to the printer in anotherway, such as a pro

The maximum right margins are shown in Table 5-5.Table 5-5. Maximum right margin settingsSkip-over-perforationIf you are using continuous-feed paper f

The standard line spacing is the only one you need for almost allprinting of text, but in some cases you may want to increase ordecrease the space bet

Chapter 6Graphics and User-Defined CharactersThe dot graphics mode allows your LQ to produce pictures,graphs, charts, or almost any other pictorial ma

Figures1-1The LQ-800...1-21-2The LQ-1000...1-21-3Installing the paper feed knob...

Income BreakdownThe quickest and easiest way to print graphics on your LQ is to usea commercial graphics program. With such programs you usually cre-a

Dot patternsThe LQ’s print head is able to print graphics as well as text becausegraphic images are formed on the LQ about the same way that pic-tures

1286432168421Figure 6-1. Pin numbering systemTo fire any one pin, you send its number. To fire more than one pinat the same time, add up the numbers o

a single line of triple-density graphics only one inch long requires 540numbers. Fortunately, commercial software can do the calculationsfor you.Befor

Column reservation numbersThe graphics command requires more than one number to specifyhow many columns to reserve because one line can use thousands

Line 20 selects single-density 24-pin graphics (mode 32 from Table6-1) and also reserves 40 columns for graphics. Since 24-pin graphicsrequires three

Write the assigned values of the pins next to your design and thentotal the values for each column of dots. These totals are the valuesthat will be se

Here is the BASIC program that prints the design shown in Figures6-3 and 6-4. Notice that the data numbers in lines 80-140 are the samenumbers that yo

Individual graphics options commandsAs previously mentioned, the LQ responds to commands that areused by Epson FX and RX series printers. There are fo

User-Defined CharactersWith the LQ, it is possible to define and print characters of yourown design. You can design an entirely new alphabet or typefa

6-1Pin numbering system...6-46-2Calculations for pin patterns...6-46-3Pattern on grid...6-76

proportional characters it is 37 dots wide, with the dots for both LetterQuality and proportional spaced more closely together than those fordraft .Fi

Defining Your Own CharactersThe first step in defining characters is to place the dots on a grid justas you want them to print. The examples here, lik

This manual uses decimal numbers because the example programsin this manual are written in BASIC and everyone is familiar withdecimals. The data you s

The LQ command to define characters is one of the most complex inits repertoire. The format of the command is this:ESCape “&” 0 nl n2 d0 dl d2 dat

to specify the dots in one vertical column of dots, the LQ expectsdl x 3 bytes of data to follow d2.An example character definition program should mak

first and third lines (printed by lines 80 and 120 of the program) printthe normal at sign; the second line (line 100) prints the arrow that youdefine

NoteThis command will cancel any user-defined characters youhave created. You must send this command to the printerbefore you define characters.If you

characters and regular characters is that they are smaller. They are amaximum of 16 dots high and their width in dot columns is shown inTable 6-4.Tabl

Mixing the three types of user-defined characters is not permitted.If, for example, you select draft and define some characters, thenselect proportion

Appendix AThe DIP SwitchesYour LQ is equipped with sixteen DIP (Dual In-line Package)switches that allow you to change many of the printer’s settings