Epson EPL-7500 Dimensions

EPSON AMERICA, INC.
EPSON
Product Support Bulletin
Subject: How To Connect Epson PostScript Printers Into An AppleTalk Network
Date: 10/9/92
Page(s): 1 of 1 PSB No: P-0092
Originator: SDS
This bulletin provides information on how to interface Epson laser printers with an
Epson PostScript’ Card to an Apple Macintosh
2
using Apple LocalTalk
3
and the
Bridgeport
4
by Extended Systems.
Connecting a printer to an Apple Macintosh can be difficult if the printer does not
have an AppleTalk interface. The Epson Action Laser II and EPL-8000 laser
printers with the Epson PostScript Card installed do not have built-in AppleTalk
interfaces and as such can be difficult to connect to an AppleTalk network.
Extended Systems has a solution to this problem. It is the Bridgeport 2679B. This
printer sharing device allows you to connect a PostScript printer to an AppleTalk
network and two DOS-based PCs. The Bridgeport has an AppleTalk port that
allows connection to either a stand-alone Macintosh or to an AppleTalk network via
Apple LocalTalk. This device also has a serial and a parallel port for connecting
two DOS-based PCs. The Bridgeport will monitor each of the input ports and route
data that it receives to the printer.
The Bridgeport 26978 was tested from an AppleTalk network to an Action Laser II,
an EPL-8000 with the Epson PostScript Card, and to an Epson EPL-7500. All three
installations worked flawlessly and the printed output was exactly as expected. This
device requires that the Apple LaserWriter? driver Version 5.2 or above be installed
on the network.
The manufacturer suggested retail price of the Extended Systems’ Bridgeport is
$495.00
5
Seebel
ow for Extended Systems’ address and telephone numbers.
Extended Systems
P.O. Box 4937
Boise, Idaho 83711
[phone] (U.S.)
[phone] (Outside U.S.)
’ PostScript is a registered trademark of Adobe Systems Incorporated.
’ Macintosh is a trademark of Apple Computer, Inc.
3 AppleTalk, LocalTalk, and LaserWriter are registered trademarks of Apple Computer, Inc.
’ Bridgeport is a trademark of Extended Systems Incorporated.
6 Price is subject to change without notice.

EPSON
EPSON AMERICA, INC.
Product Support Bulletin
Subject: Laser & Non-impact Printer Error Codes
Date: 4/3/91
PSB No: P-0077
Page(s): 1 of 11
Originator: JV
Epson printers issue beep tones and/or displays error codes when certain error
conditions exist. Those beeps or codes can assist you in locating and repairing
customer’s printers. The following error codes are listed by product name.
EPl-4000 Display Codes
PE
co
IL
IE
PJ
E1
E2
E4
(blinking)
(blinking)
(blinking)
E6 *-) YY (blinking)
E7 *--) YY (blinking)
E8 - YY (blinking)
E9 (blinking)
E0 (blinking)
bF
Paper End (out) detected
Cover open
Ink low
Ink End (out)
Paper jam
Heater error (broken heater wire)
Contact error (heater fan or thermistor contact)
C034 DVR board error
C034 Main board software Error I
(YY will be a number from 60(H) to 7D(H))
C034 Main board software Error II
(YY will be a number from 02(H) to XB(H))
Board contact error, C034 Main board hardware
(YY will be one of the following numbers: 80,81,84,85,
86,87,8A, 8C)
C034 Main board hardware error
Abnormal voltage
Buffer overflow for fonts

PSB No: P-0077
Page: 2 of 11
EPl-4000 cont.
bo
Buffer overflow for graphics
CE
Card error
PS
Paper size error
Lr Release lever error
LE
Envelope lever error
dP
Data processing
FF
Depress the Form Feed button
EPL=6000 / ActionLaser / ActionLaser+ LCD Codes
CHANGE DRUM
The drum needs to be changed. The drum cartridge may
not be installed, the cartridge may not be installed
property or the cartridge may be defective.
COVER OPEN
Printer cover is open
CPU ERROR
Printer’s CPU has made a calculation error
ERROR 10
Program ROM error
ERROR 11
Font cartridge or identity cartridge checksum error
ERROR 12 RAM error
ERROR 20
Memory overflow
ERROR 21
Print overrun error
ERROR 22
Receive buffer overflow
ERROR 30
Memory error
ERROR 31
Scanner error
ERROR 32
Heater (Heat Roller Unit) error

PSB No: P-0077
Page: 3 of 11
EPL-6000 cont.
ERROR 33
ERROR 40
FONT CARD ERROR
INSERTION ERROR
PAPER EMPTY
PAPER JAM
PAPER SIZE ERROR
PS CHANGE
Thermistor error
Parity / Framing error
Font cartridge is bad (or is not inserted) correctly
Paper is not inserted correctly or has jammed at the paper
tray
No paper in the paper cassette
Paper cassette is not installed properly
Paper cassette lid is open
Paper sensor is bad
Paper is jammed inside the printer
Paper setting does not match the size of the paper in the
paper cassette
Paper size requested by the host conflicts with the
SelecType setting
EPL-7000 LCD Codes
NOTE:
In some cases, the red CONTINUE light flashes when an error is detected.
This requires you to correct the problem and then press the CONTINUE
button to dear the error. However, if the AUTO CONT option in SelecType is
set to ON, some errors may clear automatically even though the problem
remains.
Status messages are preceded by [S], warning messages are preceded by
[W], and error messages are preceded by [E]. In some cases the message
you see on your display also shows the printer mode.
[E] ADD MEMORY FOR CH-X
The printer has insufficient memory available in the channel displayed.
[E] CARD MEMORY OVERFLOW
This message indicates that the combined memory requirement of the cards in
slots A and B exceeds 4 Mbytes.

PSB No: P-0077
Page: 4 of 11
EPL-7000 cont.
[S] COPY END X/X
Multiple-copy printing is cancelled (you pressed the COPY END button when
the printer was off line).
[E] COVER OPEN
The printer cover is open or the imaging cartridge is not installed.
[S] DATA
The printer has received data but is not yet printing, or the printer has received
data and is off line.
[E] FEED JAM
Paper is not feeding into the printer from the specified cassette or has jammed
on its way into the printer.
[S] GRAPHIC DRAWING
Graphics are being created.
[E] ILLEGAL CARD
A card or cartridge in a particular slot cannot be read.
[S] INITIALIZE
The printer is being initialized (reset) to the factory settings.
[E] INSUFF. MEMORY
The printer has insufficient memory available for the task you have given it.
This error can also be cleared by turning the printer off and back on again.
However, it may be necessary to simplify the page you are trying to print or
add more memory to the printer.
[E] PAGE BUFFER FULL
Text or graphics data has filled the printer’s buffer and an incomplete page is
ejected.
[S] PAPER FEEDING
The printer is feeding paper.
[E] PAPER JAM
Paper is not being fed into the printer or paper is jammed inside the paper
path.

PSB No: P-0077
Page: 5 of 11
EPL-7000 cont.
[E] PAPER OUT
There is no paper in the standard paper cassette and the optional lower paper
cassette (ii installed). Or, the paper set lever is in the manual position and you
are not feeding pages correctly.
[E] PAPER OUT SET AUTO XXX
There is no paper in any of the paper cassettes. The right column of the
display prompts you to load the correct paper size into the paper cassette.
[E] PAPER OUT SET OPT XXX
There is no paper in the optional lower paper cassette. The right column of
the display prompts you to load the correct paper size into the paper tray of
the lower paper cassette.
[E] PAPER OUT SET STD XXX
There is no paper in the standard paper cassette. The right column of the
display prompts you to load the correct paper size into the standard paper
cassette.
[E] PAPER SIZE ERROR
The paper size you selected with SelecType (or the default size if you have not
selected a size) does not match the paper loaded in the selected paper
cassette.
[S] PRINTING
The printer has received data and is printing..
[S] PRINT STOP X/X
The printer stops printing during a multi-copy print operation.
[S] RAM Check X.X MB
The printer is checking RAM (X.X = capacity).
[S] READY
The printer is ready to print.
[E] REINSERT CARD
If this message appears on the display, you may have removed a font card or
cartridge while the FEED light was still lit or while the printer was on line.

PSB No: P-0077
Page: 6 of 11
EPL-7000 cont.
[E] REMOVE CARD
You may have inserted a font card or cartridge while the printer was on line or
while the FEED light was on. Data still remains in the printer’s buffer.
[E] RESELECT TRAY
The optional lower paper cassette is not installed and the INPUT option is set
to OPT or AUTO.
[S] RESET
The printer is being reset to the previous settings in the macro specified with
LOAD MACRO option in SelecType Level 1.
[S] ROM Check
The printer is checking ROM.
[E] SAVE MEMORY OVERFLOW
If this message appears when you are trying to save a macro with the SAVE
MACRO option in SelecType Level 1, the printer does not have enough
memory to save any additional macros
[E] SERVICE REQ. CXXX
A controller error has been detected.
[E] SERVICE REQ. EOOXX
A print engine error has been detected.
XX= 03 Fusing Unit (low temp)
04 Main Drive Motor
05 Ozone Fan motor
06 Polygon Mirror Drive
09 HSync Signal
[E] SET FULL PRINT
This message may appear when you are trying to print graphics or a mix of
text and graphics.
[S] STANDBY MODE
When both CH P and CH S remain off for about thirty minutes, the printer
enters standby mode and this message appears.
[E] STARTUP ERROR
If this message appears when you turn on the printer, the power may have
been turned off while the printer was performing a save or reset operation.

PSB No: P-0077
Page: 7 of 11
EPL-7000 cont.
[W] TONER LOW
The printer is almost out of toner. When this message first appears on the
LCD display, you can print up to 25 more pages.
[E] TONER OUT
The imaging cartridge must be replaced.
[E] TRAY SET AUTO XXX
The paper size setting does not match the paper loaded in the specified paper
cassette. The right column is the expected paper size and the currently
selected cassette.
[E] TRAY SET OPT XXX
The paper size setting does not match the paper loaded in the optional lower
paper cassette. The right column is the expected paper size.
[E] TRAY SET STD XXX
The paper size setting does not match the paper loaded in the standard paper
cassette. The right column is the expected paper size.
[S] WAlT
Printer is being reset after a START UP ERROR.
[S] WARMING UP
Printer is warming up.
EPL-7500
[E] COVER OPEN
Cover is open or the imaging cartridge is not installed.
[E] MANUAL FEED
Manual feed method is selected.
[S] OFF LINE
Printer is Off tine
[E] OUT OF PAPER
No paper cassette is installed, the paper cassette is empty, or the paper set
lever is in the manual position.

PSB No: P-0077
Page: 8 of 11
EPL-7500 cont.
[E] PAPER ENTRY JAM
Paper is not feeding from the specified paper cassette or has jammed on its
way into the printer.
[E] PAPER EXIT JAM
Paper is jammed inside the paper path.
[S] PRINTING
The printer has received data and is printing.
[S] PRlNTlNG TEST
The printer is printing the test page.
[S] PROCESSING
The printer is processing data.
[S] QUlT THE JOB
The On-Line button has been pressed while a print job was in progress. The
job can be flushed by pressing the Reset button, or a reset can be cancelled
by pressing any other button.
[S] QUITTING THE JOB
The printer is flushing a job from the buffer.
[S] READY
The printer is ready to receive data.
[S] RESETTING
This message appears initially when the printer is turned on, and momentarily
between print jobs.
[E] TONER LOW
The imaging cartridge must be replaced.
[S] WAIT- FOR READY
The On-tine button was pressed while a print job was in progress. The printer
continues printing until the current job is completed, then it goes Of-Line.
[S] WAITING
The printer is in the process of executing a job and has run out of data and is
waiting for the channel to provide more data.

PSB No: P-0077
Page: 9 of 11
EPL-7000 cont.
[S] WARMING UP
The printer is warming up.
Note:
lf any of the following messages appear, turn the printer off for at least five
seconds, then turn it back on. lf the same message is displayed, repair is
required.
SCAN MOTOR ERROR
HSYNC ERROR
HEATER LAMP ERROR
MAIN MOTOR ERROR
FAN MOTOR ERROR
ES300C Display Codes
E-C
Command error. An unidentified command or parameter was detected.
E-l Interface error
a. Incorrect communication parameter received.
b. Broken connector or wire.
c. Host failed to respond within 30 seconds.
d. Host is not accepting data. (DSR= Low)
E-F Fatal error
a. A lamp is broken.
b. Power is applied before the transportation screws were removed.
c. System failure
GQ-3500 Display Codes
do
Cover Open error
EO-00
Engine driver CPU error.
EO-01
Option tray CPU error.
EO4+02
Option tray motor error.

PSB No: P-0077
Page: 10 of 11
GQ-3500 cont.
EO*03
EOo05
EOoo6
E1 -80
E1 * 81
E1 -82
E1 083
E1 084
E1 -89
E1 .+ 91
E1 -92
E1 -Al
E1 *A2
E1 *A3
JO
J1
J2
PO
PU
To
Optical unit error.
Main motor error.
Fusing unit error.
Exception error.
Trap error.
Bus error.
Address error.
Illegal Instruction.
NMI error.
Reverse vector interrupt error.
User vector interrupt error.
System RAM error.
External RAM error.
CG ROM error.
Paper feed error.
Paper feed jam.
Paper exit jam.
Paper empty, paper tray is not installed or paper is not
installed properly.
Paper size error.
Toner empty.

GQ-3500 cont.
U1
U2
PSB No: P-0077
Page: 11 of 11
Replace the collector unit and lens shield.
Replace the drum cartridge and lens shield.

Product Support Bulletin
Subject: EPL-7500 Questions and Answers
Date: 10/9/92 PSB No: P-0072B
Page(s): 1 of 11 Originator: SLS
This bulletin answers some commonly asked questions about the EPL-7500 printer.
The questions and answers are listed below.
QUESTIONS AND ANSWERS ON THE EPL-7500
1.
Q. What printer modes are built-in for the EPL-7500?
A.
The EPL-7500 has one (1) built-in operating mode and one (1) software
emulation mode, both are selectable through the SelecType feature on the
front panel:
Adobe PostScript
HP LaserJet Series IIP Emulation
2.
Q. What is PostScript?
A.
PostScript is a programming language written specifically for displaying
information. Its main purpose is to simplify the task of transferring
graphics to the printed page. The PostScript language differs from other
programming languages such as C, PASCAL or BASIC because it is not a
general purpose programming language. The graphic capabilities include
printing of geometric shapes, as well as text, that may be scaled to any
size, stretched, skewed, reversed and filled with a pattern. Another
important fact is that PostScript has the ability to scale resident fonts to
any point size, Unlike other printer languages that only support bit-mapped
fonts of specified sizes.
3.
Q.
What version of the Adobe PostScript interpreter is incorporated into the
EPL-7500?
A.
The EPL-7500 utilizes version 52.3, revision 0 of Adobe’s PostScript
interpreter.

PSB No: P-0072B
Page: 2 of 11
4. Q. What is a RISC processor and what are its advantages?
A. RISC stands for “Reduced Instruction Set Computer”. RISC processors
are optimized for particular functions, unlike general purpose processors.
They are designed to complete those functions in one (1) clock cycle
rather than several, thus speeding up their performance. The EPL-7500
uses the Weitek XL-8200 series 32-bit RISC processor (8 MHz), which
has been optimized for use in printer controllers. The application of this
processor in an Adobe PostScript printer dramatically speeds up data
through-put when printing complex pages. The term “through-put” refers
to the time that a printer requires to process and print a page.
5. Q.
What are the product codes for the EPL-7500 options and supplies?
A.
Listed below are the product codes for the EPL-7500 options and
supplies.
C812051 Lower Paper Cassette Unit (option)
C812071 Face-up Output Tray (option)
C822051 2Mb Memory Board (option)
C822021 4Mb Memory Board (option)
SO51009 Long life Imaging Cartridge [includes cleaning pad]
SO91001 Ozone Filter
6.
Q.
Are there any optional printer emulations currently available for the
EPL-7500?
A. No.
7.
Q. What interface ports are built-in the EPL-7500?
A.
The EPL-7500 has four (4) of the most commonly used interface ports
built-in:
1.
AppleTalk
2.
Centronics Parallel
3.
RS-232C Serial
4.
RS-422 Serial

PSB No: P-0072B
Page: 3 of 11
8. Q.
What is the 8 pin DIN connector on the back of the printer used for?
A.
The 8 pin DIN connector is used for the built-in AppleTalk and RS-422
serial interfaces.
9. Q. If a printer driver selection is not shown for the EPL-7500 in my
application software programs, which printer driver selection should I
choose?
A.
The proper printer driver selections are dependent upon which mode the
printer is operating in. When using the Adobe PostScript operating mode,
the recommended printer driver selections are listed below from best to
worst.
Apple LaserWriter II NTX (Best)
Apple LaserWriter II NT
Apple LaserWriter Plus
Apple LaserWriter
Generic PostScript
(Worst)
The recommended printer driver selections when using the HP LaserJet
Series IIP emulation mode are listed below from best to worst.
HP LaserJet Series IIP
HP LaserJet Series II
HP LaserJet Plus
HP LaserJet 500
HP LaserJet
Generic PCL Device
(Best)
(Worst)
NOTE: With certain application software, better results may be
obtained by using the HP LaserJet Series II selection.
10. Q. What is the rated print speed and resolution for the EPL-7500?
A.
The EPL-7500‘s print speed is up to six (6) pages per minute (PPM) when
using letter-size paper at up to 300 dots-per-inch (DPI).
NOTE: A print speed of up to six (6) PPM is achieved by using the
printer’s number of copies feature.

PSB No: P-00728
Page: 4 of 11
II. Q. How much memory comes standard with the EPL-7500 and how can this
amount be increased?
A.
The EPL-7500 comes standard with 2Mb of memory. The amount of
memory can be either doubled or tripled through the use of an optional
2Mb or 4Mb memory board.
12. Q. Can the amount of memory on either the 2Mb or 4Mb memory board be
increased?
A. No.
13. Q. How do I run a SELF-TEST on the EPL-7500?
A. The EPL-7500 provides one (1) built-in SELF-TEST. Listed below are the
keystrokes necessary to initiate the SELF-TEST.
1.
Press the ON LINE button to enter the off-line condition.
2.
Press the SelecType button twice to enter the LEVEL 2 settings.
3.
Press the down arrow until “MISCELLANEOUS” is displayed.
4.
Press the right arrow to enter the miscellaneous settings.
5.
Press the down arrow until “TEST PRINT” is displayed.
6.
Press the right arrow to execute the test print.
7.
After the page prints, press the ON LINE button to return the
printer to an on-line condition.
14. Q. How do I set the EPL-7500 Level 1 and 2 settings back to the factory-
default settings using the SelecType buttons on the printer’s front panel?
A. 1.
2.
3.
4.
5.
6.
7.
8.
9.
Press the ON LINE button to enter the off-line condition.
Press the SelecType button twice to enter the LEVEL 2 settings.
Press the down arrow until ‘MISCELLANEOUS’ is displayed.
Press the right arrow to enter the miscellaneous settings.
Press the down arrow until “FACTORY RESET” is displayed.
Press the right arrow to enter the factory reset selection.
Press the down arrow to select either “LETTER” or “A4”. This
selection will determine the factory default setting for PAPER STD
TRAY and PAPERSIZE OPT TRAY in SelecType Level 1.
Press the right arrow to execute the reset condition.
Press the ON LINE button to return the printer to an on-line
condition.

PSB No: P-0072B
Page: 5 of 11
15. Q. Is the EPL-7500 compatible with Type 1 and Type 3 soft fonts developed
for Adobe PostScript printers?
A.
Yes, the EPL-7500 is compatible with Type 1 and Type 3 soft fonts
developed for Adobe PostScript printers.
16. Q. After I make changes in SelecType, what must I do to make these
changes permanent?
A.
Selecting and executing the “SAVE LEVEL 1” or “SAVE LEVEL 2” option
while in SelecType will make the corresponding changes to the Level 1 or
2 settings permanent.
NOTE: Whenever you change the INTERFACE setting, make sure you
save the new setting with the SelecType SAVE LEVEL 2 option
and turn the printer off before you attach the cable. Attaching
the cable with the power on could damage your printer.
17. Q. Why does the EPL-7500 display “WAITING” on the LCD and not print
anything when I send data to it?
A.
The EPL-7500 is a page printer meaning that it prints a whole page at a
time. If the EPL-7500 does not receive a full page of data and/or the
proper command to eject the page, it will not print.
18. Q. When using the HP emulation mode, how do I eject the page from the
EPL-7500 when “WAITING” is shown on the LCD display?
A.
Pressing the FEED button ejects the page. This button is inactive in the
PostScript operating mode.
19. Q. How many internal (built-in) fonts are included with the EPL-7500’s
PostScript mode?
A.
The EPL-7500’s PostScript mode comes standard with thirty-five (35)
outline fonts and three (3) bit-mapped fonts. Bit-mapped fonts are cached
in ROM and can significantly reduce printing time when they are used.

PSB No: P-0072B
Page: 6 of 11
20. Q. Who manufactures the engine used in the EPL-7500?
A.
The engine used in the EPL-7500 is manufactured by Minolta.
21. Q. When in the HP emulation mode, does the EPL-7500 accept HP LaserJet
compatible font and emulation cartridges?
A.
No, HP LaserJet compatible font and emulation cartridges are not
supported by the EPL-7500. However, any of the widely available soft
font programs for the HP LaserJet series, such as Glyphix or Bitstream,
may be used for printing different fonts.
22. Q. Is there additional information available on the EPL-7500?
A.
Yes, there are several documents relevant to the operation and
programming of the EPL-7500; the three most important are:
PostScript Language Reference Manual (Second Edition) - describes the
programming language. The language manual describes features of the
language that are available in all PostScript interpreters.
PostScript Language Tutorial and Cookbook - contains explanatory and
tutorial material to increase and improve your understanding of the
PostScript page description language.
PostScript Language Program Design - teaches the programming
principles that are unique to the PostScript language; includes usable
sample programs.
These PostScript reference materials are published by Addison-Wesle,
and are available in most bookstores or directly from Adobe Systems, Inc.
23. Q. What is the rated life of the imaging cartridge?
A.
The long life imaging cartridge (SO51009) has a rated life of 8,000 pages
when printing continuously, using letter or A4-size paper with 5% toner
coverage of the sheet.

PSB No: P-0072B
Page: 7 of 11
24. Q. How can I adjust the print darkness if it is either too dark or too light?
A.
The print darkness is adjustable by turning the knob located inside the
printer at the front right hand side.
25. Q. What are the two (2) slots located at the front of the printer used for?
A.
The two slots are reserved for future use.
26. Q. What are the paper handling capacities of the input tray, output tray and
optional equipment?
A.
The paper capacities using standard 20 lb. paper are listed below:
250 Sheets - Input Tray
250 Sheets - Face-Down Output Tray
100 Sheets - Face-Up Output Tray (Optional)
250 Sheets - Lower Paper Cassette Unit (Optional)
27. Q. How often should the user replaceable ozone filter be replaced?
A.
The ozone filter should be replaced every six (6) months.
NOTE: If the ozone filter is not replaced at the proper interval, a
degradation in print quality may occur because of excessive ozone
accumulation inside the machine. Should this occur, normal print
quality can be restored by simply replacing the ozone filter.
28. Q. What items in the printer should be routinely cleaned when the imaging
cartridge is replaced or when a decline in print quality is noticed?
A. The following items require routine cleaning:
a.
Transfer Charger Wire
b. Glass Lens
dc:
Paper Path
Paper Feed Roller
NOTE: Item “a” should be cleaned with a cotton swab. Items “b”,“c” and
“d” should be cleaned with a soft clean cloth.

PSB No: P-0072B
Page: 8 of 11
29. Q. Can the EPL-7500 print on special paper types such as envelopes?
A. Yes, the EPL-7500 can print on special paper types such as standard
(window-less) envelopes if the paper weight is within the range of 24 lb. to
41 lb.
NOTE: When printing on envelopes, the optional Face-Up Output Tray
should be used.
30. Q. What is required to connect an EPL-7500 to a Macintosh computer?
A. Connecting an EPL-7500 to a Macintosh requires two (2) Apple LocalTalk
Locking Connector Kits with an 8-pin MINI connector at one end of the
cable. The other end will have either an 8-pin MINI connector or a DB-9
connector dependant upon which Macintosh computer is being used.
NOTE: Both of these items should be readily available from an Apple
resellers. The part number for the 8-pin is M2068, the DB-9 is
M2065.
31. Q. When in the HP emulation mode, why do certain programs not print the
correct font sizes?
A. The EPL-7500 has the ability to scale typefaces in PostScript and Hewlett-
Packard emulation mode, whereas a Hewlett-Packard LaserJet IIP printer
can not. If software application drivers were written in an incomplete
manner, realizing that “close enough” will get the right font on the LaserJet
printer, the output may be different for the EPL-7500. To help
compensate for drivers written in an incomplete manner, the EPL-7500
uses a slack margin of 0.4 pitch when selecting font pitch. Thus, if the
application software asks for 16.67 pitch then asks for 17 pitch, the EPL-
7500 would reuse the 16.67. The reason the 16.67 pitch would be reused
is because the difference between 16.67 and 17 does not exceed the
slack margin of 0.4. If the difference between the current font and the
requested font exceeds 0.4, then the requested font would be used. On
the Hewlett-Packard LaserJet IIP if 12 pitch is requested but 10 pitch is
the closest available, the Hewlett-Packard would print in 10 pitch.
However, the EPL-7500 would provide 12 pitch (the difference between 10
and 12 is greater than 0.4) due to its ability to scale fonts. The same
holds true for selecting point sizes.