Mitsubishi Electronics P91DW User Manual

DIGITAL MONOCHROME PRINTER

MODEL

P91DW

OPERATION MANUAL

FUNC DOWN SETUP

OPEN

THIS OPERATION MANUAL IS IMPORTANT
TO YOU.
PLEASE READ IT BEFORE USING YOUR
DIGITAL MONOCHROME PRINTER.

GAMMA FEED

COPY

DIGITAL MONOCHROME
PRINTER

This digital monochrome printer complies with the requirements of the EC Directive
89/336/EEC, 73/23/EEC, 93/42/EEC and 93/68/EEC.
The electro-magnetic susceptibility has been chosen at a level that gains proper
operation in residential areas, on business and light industrial premises and on small­scale enterprises, inside as well as outside of the buildings. All places of operation are
characterised by their connection to the public low voltage power supply system.

WARNING:

Use the AC power cord recommended as below and a parallel cable (Hewlett Packard
C2951A, etc.) so as not to interfere with radio and television reception.
If you use other cables, it causes interference with radio and television reception.

WARNING:

Use the AC power cord according to the recommendations as below,
Case 1, 2, 3 and 4; in order to comply with UL2601-1 and CAN/CSA C22.2 No. 601.1.
Case 5; in order to comply with EN60601-1 and EN60950.

Case 1. Connect to the 120V receptacle of the room or the host equipment.

The AC power cord should be UL or CSA approved and consist of type SJT, size
16 or 18AWG, length 2.5m or shorter cord with IEC320/C13 type, 125V 10A or
higher rating connector and NEMA 5-15 type, 125V 10A or higher rating, Hospital
Grade plug.

Case 2. Connect to the 230V receptacle of the room or the host equipment.

The AC power cord should be UL or CSA approved and consist of type SJT, size
16 or 18AWG, length 2.5m or shorter cord with IEC320/C13 type, 250V 10A or
higher rating connector and NEMA 6-15 type, 250V 10A or higher rating, Hospital
Grade plug.

Case 3. Connect to the 120V receptacle of the host equipment.

The AC power cord should be UL or CSA approved and consist of type SJT, size
16 or 18AWG, length 2.5m or shorter cord with IEC320/C13 type, 125V 10A or
higher rating connector and IEC320-2.2/E type, 125V 10A or higher rating plug.

Case 4. Connect to the 230V receptacle of the host equipment.

The AC power cord should be UL or CSA approved and consist of type SJT, size
16 or 18AWG, length 2.5m or shorter cord with IEC320/C13 type, 250V 10A or
higher rating connector and IEC320-2.2/E type, 250V 10A or higher rating plug.

Case 5. Connect to the 230V receptacle of the room or the host equipment.

The AC power cord should be VDE approved and consist of core size 1mm
bigger, length 2.5m or shorter cord with IEC320/C13 type, 250V 10A or higher
rating connector and CEE(7)VII type or IEC 320-2.2/E type, 250V 10A or higher
rating plug.

NOTE:

This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his or her own expense.

Information:

This class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

"CLASSIFIED BY UNDERWRITERS LABORATORIES INC.®
WITH RESPECT TO ELECTRIC SHOCK, FIRE AND MECHANICAL HAZARDS ONLY IN
ACCORDANCE WITH UL2601-1 AND CAN/CSA C22.2 No. 601.1"

2

or

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC

SHOCK,

DO NOT REMOVE COVER (OR BACK)

NO USER-SERVICEABLE PARTS INSIDE

REFER SERVICING TO QUALIFIED SER VICE PERSONNEL.

The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated "dangerous voltage" within the
product's enclosure that may be of sufficient magnitude
to constitute a risk of electric shock.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.

WARNING:

TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE
TO RAIN OR MOISTURE.

This product is to be employed with medical equipment, just for
reference purpose, not for medical diagnostic purpose.

CONTENTS

1

11

1

CONTENTS................................................................. 1

11
22

2

PRECAUTIONS ..................................................... 2 - 4

22
33

3

UNPACKING............................................................... 5

33
44

4

FEA TURES AND FUNCTIONS

44

Front Panel.............................................................. 6

Rear Panel............................................................... 7

55

5

INSTALLATION OF PAPER .................................. 8 - 9

55
66

6

EXAMPLE OF CONNECTION.................................. 10

66
77

7

PRINTING .......................................................... 11 - 12

77
88

8

ADJUSTMENT OF PRINT PICTURE

88

Selection of Gamma (γ) Curve............................. 13

99

9

SETTING OF FUNCTION MODE ...................... 14 - 15

99
AA

A

ERROR DISPLAY .............................................. 16 - 17

AA
BB

B

ST ATUS AND MODES.............................................. 18

BB
CC

C

USE OF CLEANING PAPER .................................... 19

CC
DD

D

PARALLEL DATA INTERFACE......................... 20 - 22

DD
EE

E

MAINTENANCE........................................................ 23

EE
FF

F

SPECIFICATIONS .................................................... 24

FF

1

PRECAUTIONS

2

In the interest of safety, please observe the following pre­cautions:

POWER REQUIREMENT

This Digital monochrome printer is designed for opera­tion on 120/220-240V AC 50/60Hz in U.S.A and Canada,
220-240V AC 50/60Hz in Europe. Never connect to any
outlet or power supply having a different voltage or fre-

PROTECTIVE MEASURES

IF ABNORMALITIES ARISE, . . .

Use of the unit during emission of smoke or abnormal
sounds (without adopting countermeasures) is dangerous.
In such a case, unplug the power cord from the source
outlet immediately, and request maintenance services from
the sales dealer.

NEVER INSERT ANY OBJECT INTO THE UNIT

Foreign objects of any kind inserted into this unit consti­tute a safety hazard and can cause extensive damage.
If any object should be inserted into the unit, unplug the
power cord, then contact the sales dealer.

DO NOT PLACE ANYTHING ON THE UNIT

Heavy objects placed on the unit can cause damage or
obstruct proper ventilation.

PROTECT THE POWER CORD

Damage to the power cord may cause fire or shock haz­ard. When unplugging, hold by the plug only and remove
carefully.
Never put a heavy thing on the power cord. The cord may
be damaged causing a fire or electric shock.

DO NOT PLACE WATER CONTAINERS ON THE UNIT

Do not place flower vases, and other water-holding con­tainers on the unit. If, for some reason, water seeps to the
inside of the unit, unplug the power cord from the
source outlet, and contact the sales dealer. If used without
corrective measures, the unit may be damaged.

quency.

WARNING : THIS APPARATUS MUST BE EARTHED.
AVERTISSEMENT : CET APPAREIL DOIT ETRE MIS A
LA TERRE.

This equipment is classified as class 1, type B according
to the type of protection against electric shock.

DO NOT REMOVE THE CABINET

T ouching internal parts is dangerous, besides, it may lead
to malfunction. Contact the sales dealer to carry out inter­nal checks and/or adjustments. Before opening the cover
for eliminating a jammed paper, etc., be sure to discon­nect the power cord plug.

PLACE THE UNIT ON A HORIZONTAL LEVEL

The unit is likely to be affected if it is placed in slanted
conditions or in unstable places.

PROTECT AGAINST DEW FORMATION

In extremely cold regions, if the unit is moved quickly from
an extremely cold place to a warmer one, dew is likely to
be formed. If dew is formed, printing is not possible.

OPERATING AMBIENT TEMPERATURE RANGE

The operating ambient temperature range is 5°C-40°C
(41°F-104°F), and humidity of 20-80%.

BE CAREFUL AROUND PRINT PAPER EXIT SLIT

Do not insert your hand or any material into the paper exit
slit during printing.
Do not touch the cutter blade inside the paper exit slit.
Otherwise, your finger will be injured.

DO NOT TOUCH THE THERMAL HEAD AND CUTTER

Do not touch your hand to the thermal head (located in­side the unit) and the cutter blade.
The thermal head is heated to high temperature.
This may cause injury.

INSTALLATION LOCATIONS

MAINTAIN GOOD VENTILATION

Ventilation slots and holes are provided on sides of this
unit.
Place the unit on a hard and level surface and locate at
least 4" (10cm) from walls to ensure proper ventilation.

UNSUITABLE LOCATIONS

Avoid shaky places or hot-springs areas where hydrogen
sulfide and acidic ions are likely to be generated.

PLACES WITH HIGH HUMIDITY AND DUST

Do not place the unit at locations with high humidity and/or
dust. They can cause extensive damage.
Avoid places where the unit is likely to contact oily fumes
and vapors.

PLACES NOT LIKELY TO BE EXTREMELY HOT

Places exposed to direct sunlight, or near heating
appliances can attain extremely high temperatures, which
may deform the cabinet, or can become a prime cause of
damage.

SET THE UNIT ON A FLAT PLACE

Do not use the unit in the state inclined ±20° in vertical or
horizontal direction, or in an unstable place.
It will disturb paper feeding or ventilation, or affects the
set.

2

FOR LONG OPERATING LIFE

UNSUITABLE MATERIALS FOR THE UNIT

Many plastic components are used in the backside. Coat
flaking and deformation are likely to occur if the unit is wiped
with chemical dusters, benzine, thinner or any other sol­vent, if rubbers or PVC items are left in contact with the
unit for extended duration, or if the unit is sprayed with
insecticide.

CARE OF THE CABINET

Unplug and clean with a soft cloth slightly moistened with
a mild soap and water solution. Allow to dry completely
before operating. Never use petroleum base solutions or
abrasive cleaners.

HEAD ABRASION

The thermal head, like the video head, wears out.
When it is abraded, it becomes hard to print out fine details
of the picture. In such a case, it is necessary to replace the
thermal head. Consult with the sales dealer for replacing
the head.

WHEN A DEFECT IS FOUND

When you detect smoke or smell from the unit, disconnect

THERMAL PAPER

immediately the power cord plug from a wall socket and
ask the agent for repair. Dangerous if the unit is operated
in that state.

CONNECTION DEVICES

Read thoroughly "Operating Precautions" of the instruc­tion booklets for other devices connected with the Digital
monochrome printer.
Do not disconnect the power cord during printing.

CAUTION ON RELOCATING

When transporting this unit, make sure it is not likely to be
subjected to impacts. They can be a prime cause for dam­age. Further, make sure to disconnect the power cord from
the power outlet, and the cables from the connected de­vices.

UNPLUG THE POWER CORD DURING A LONG
ABSENCE

Turn off the MAIN power switch and unplug the power cord
during a long absence.

2When the remaining length of the paper is about10"

(25cm), a color belt appears at the paper end.
Prepare for replacement of the paper. If the
remaining paper length is less than 10" (25cm),
printing becomes uneven due to the uneven
paper core surface.

2When the Printed paper is touched by wet hand,

the print may be discolored.

2When the paper runs out during printing, the printing

operation stops and "EP" is displayed by the indicator
on the front panel. Install new paper at this time.

2Store the printed paper in a place with low humidity

free from a direct sunlight.

2If the paper absorbs nonvolatile organic solvents

(alcohol, ester, ketone, etc.) the print may be
discolored.
Particularly, if the paper comes in contact with soft
vinyl chloride such as a transparent tape, it quickens

discoloration.
2Do not use paper other than the specified one.
2Immediately after the paper is replaced, 2-3 images

may be printed with a blank part due to hand's dust

or oil.
2Avoid a direct sunlight or a place near a heater,

and store the paper in a place with 30°C ( 86°F)

or lower temperature and 35-80% RH.

2When the paper is rapidly transferred from a cool

place to a hot place, a vapor or a dew is generated
on the paper surface causing paper jam or degraded
printing quality.

2A finger print or dust on the paper surface may

degrade the printing quality.

Note:

Mitsubishi brand thermal paper is specially treated
with an antistatic coating against thermal head
damage caused by static-electricity discharge.
The use of non-treated paper may cause premature
head failure in your product.

3

SAFETY TECHNICAL CHECKS

Periods: According to the recommendations of the manufacturer of medical device.
Scope: a) Visual check

Housing, cables, operator controls, readout device ( displays, LED etc.), labels, accessories,
instruction manual.

b) Function test

Performance check acc. instruction manual, also unity and applicability of set and accessory test.

c) Electrical check

Safety electrical test of the configuration in accordance with EN60601-1.

“ In the interest of safety, avoid the handling of liquids beside the set.”

RESPONSIBILITY OF THE MANUFACTURER

The manufacturer, assembler, installer or importer considers himself responsible for the effects on safety, reliability
and performance of the EQUIPMENT only if:

– assembly operations, extensions, readjustments, modifications or repairs are carried out by persons authorized by

him, and
– the electrical installation of the relevant room complies with the IEC requirements
– the EQUIPMENT is used in accordance with the instructions for use.

• Any service after expiration of the warranty period will be made at cost. Consult our service station in your place.

TECHNICAL DESCRIPTION

The supplier will make available on request such circuit diagrams, component part lists, descriptions, calibration

instructions or other information which will assist the USER's appropriately qualified technical personnel to repair

those parts of the EQUIPMENT which are classified by the manufacturer as repairable.

The use of ACCESSORY equipment not complying with the equivalent safety requirements of this equipment may

lead to a reduced level of safety of the resulting system. Consideration relating to the choice shall include:

– use of the accessory in the PATIENT VICINITY

– evidence that the safety certification of the ACCESSORY has been performed in accordance to the appropriate

EN60601-1 and/or EN60601-1-1 harmonized national standard.

The transportation and storage environmental conditions are:

Temperature : -20°C - +60°C (-4°F - +140°F)
Humidity: 90%RH or less at 40°C (104°F)
Note : The above transportation environmental conditions indicate the storage environmental conditions
during transport.

4

UNPACKING

F

U
N
C

D
O
W
N

S
E
T

U
P

G
A
M

M
A

F
E
E

D

CO

PY

3

Take the unit out of the box by the following procedures. Make sure to check the
contents.

11

1

Open the top of the box.

11

33

3

Take the unit out of the box carefully.

33

• Make sure to
keep the unit
horizontal.

22

Remove

2

22

the cushion above the unit.

44

4 Unwrap the unit.

44

Accessories

Thermal paper

AC power cord

Cleaning paper
Operation manual
Printer driver (1 floppy disk)

5

FEATURES AND FUNCTIONS

4

Front Panel

Power switch

1

FUNC button

2

DOWN button

3

UP button

4

SET button

5

Indicator

6

B

Name

1

OPEN

345

2

FUNC DOWN SETUP

7

6

GAMMA FEED

9

8

COPY

A

Function

Turns on/off the power.
Function mode changes whenever FUNC

is pressed.
Press to change the value in function

mode.
Press to change the value in function

mode.
Press to set each function value and γ-

curve.
Displays stand-by, functions and error

messages.

Reference

page

-

14•15

15

15

-

15-17

GAMMA button Press to change the γ-curve.

7

FEED button

8

COPY button

9

Print exit/Cutter

A

B

Lever

Press to feed the paper.
Press for additional copies of the previous

printout.
Printed paper will come out through this

slot. Cut the printed paper here.
Opens the door.

6

13
12

11

-

-

Rear Panel

1 2 3 4

LOCK
ON
OFF

ON

1 2 3 4

C

OFF

OFF

Name

Mode switches

C

PARALLEL data terminal

D

Power terminal (AC LINE)

E
F

Potential equalization terminal

PARALLEL DATA IN

D

AC LINE

E

F

POTENTIAL EQUALIZATION
TERMINAL

This is used to equalize the potential of the equipment
connected to this unit.
For details refer to the installation instruction of
equipment to be connected.

Function

Select special functions.
Connects to the device equipped with

parallel data interface such as personal
computer.

Connect the power cord to this terminal.
Makes the connected equipment of

potential equal.

Reference

page

10

10

20 - 22

-

-

7

INSTALLATION OF PAPER

5

Moisture, fingerprints or dust on the
paper surface may cause a noise at
printing or deterioration in print
quality. Set the paper in the following
procedure to prevent adhesion of
fingerprint or dust on the paper
surface.

11

1

Open the door.

11

• Switch the lever
located on the

OPEN

22

2

Load the paper roll.

22

left side to the
“OPEN” position.

The door opens.

•Place the paper roll

in the printer.

33

3

Pull out the paper end.

33

• Pull out the first 15-

44

4

Close the door.

44

55

5

Cut the paper end.

55

20cm (6 in. - 9 in.) of
the paper to remove
any slack in the roll.

printing side

INCORRECT CORRECT

Note: The printing surface is the outside.

Place the paper with the thermo­sensitive side (printing side) up.
When the paper roll is placed
inversely, images can not be printed.

cutter

• Cut the paper end with the cutter just like
tearing off the paper.

8

When setting the paper, observe the following
precautions to prevent paper jam.

Do not use defective paper.

Do not use the bent or wrinkled
paper.

Adjust the paper position correctly.

When the paper is fed out skewed
from the print exit, adjust the paper
position so that it is fed out straight.

Do not slack the roll paper.

Set the paper tightly to remove any
slack.

If the side of the print paper is uneven or the core is sticking out, the amount of paper
feeding after printing may vary.
When the side of paper is uneven or the core is sticking out, install the print paper after
making the paper side even.

The core is sticking out.

INCORRECT

The paper is uneven.

CORRECT

Make the paper side even.

CAUTION

• Keep the high-density paper away from fingerprint, dust or moisture when storing it.

• Do not touch the rubber roller. Do not stain or damage the roller surface.

• Do not touch the thermal head (located behind the cutter). When printing, the thermal

head is heated to high temperature.

• Do not touch the cutter blade.

9

EXAMPLE OF CONNECTION

6

Connecting to various equipment with parallel data interface
such as medical equipment and personal computer.

Connection

1

Turn off the power switches of the digital monochrome printer
and the equipment to be connected.

2

Connect the digital monochrome printer with PC or medical
equipment through a parallel cable.

3

When inserting the parallel cable to the printer's connector,
make sure to fasten the springs at the both sides of the
connector to secure the cable.

Personal computer or
medical equipment

T o PARALLEL
DATA IN
connector

1 2 3 4

PARALLEL DATA IN

LOCK
ON
OFF

ON

12 3 4

OFF

OFF

Rear panel

AC LINE

Connect
Power cord

Mode switch setting

1 2 3 4

ON

OFF

LOCK
ON
OFF

1 2 3 4

OFF

Set the mode switches on the rear panel.

• When setting the switch No. 1 to ON, FUNC, DOWN, UP, SET and
GAMMA buttons will be locked. (The functions will not be available.)

Set the switches other than No. 1 to OFF.

Installing printer driver

Printer driver is required to print the data from a personal computer connected with this
printer.
The printer driver for Windows® is supplied with this printer.

Product name Operating conditions
For Windows

Refer to the operation manual of the printer driver or "Read me" for installing.
WindowsNT® is the registered trademarks of Microsoft Corporation in the U.S.A and other

countries.

®

Applies for Microsoft® WindowsNT®4.0

10

PRINTING

COPY

7

Printing procedure

11

1

Turn on the power.

11

33

3

Cut the printed paper.

33

• Press the
“POWER”

switch to turn
on the power.

22

2

Print a picture displayed on the screen.

22

• Print a picture with an application
software. The image data is transferred
through parallel data interface.

Copy printing

2

You can set the number of copies by
pressing the COPY button on the front
panel. You can copy the same picture as
many times as you desire until a new
image data is printed.

2

When the COPY button is pressed during
copy printing, the current image will be
completed and the rest will not be printed.

2

The set number of the copy printing will
not be memorized.

Indicator

• Cut the printed
paper with the
cutter by
tearing off the
paper in the
upper right

cutter

direction.

- : number of copies
: continuous printing

COPY printing mode

11

Paper feeding

FEED

2

By pressing the "FEED" button on the
front panel, you can feed the paper.

Precautions on Printing

2

If printing is continued with a very black picture, the printer will become overheated and
printing will not be available. " " is indicated, and the button functions become invalid.
In this case, wait for a while until the unit is cooled down.

2

Avoid pulling out or holding the recording paper during printing or copying.
It can cause paper jam. Do not touch the paper until printing or copying ends.

Paper saving mode

2

When the paper saving mode switch is set to " " in the function mode, print feeding
length is shorter than normal condition.

Before cutting the print, press the FEED button on the front panel to advance the paper.

12

8

ADJUSTMENT OF PRINT PICTURE

Selection of Gamma (γ) Curve

You can select γ-curve by pressing the gamma button " ".
Each time the button is pressed, the indicator and γ-curve
number is switched. After a γ-curve number has been
selected, press the "SET" button to store the γ-curve number.

γ−curve set
mode

FUNC DOWN SETUP

This is the mode to select the gamma (γ) curve (density

diagram characteristic) to get the proper density for each
printing image. Select the best one among the five gamma
curves.

GAMMA FEED

Adjustable contentsIndicator/Adjustable Item

13

SETTING OF FUNCTION MODE

9

1

Select a function mode by pressing the FUNC button.

• Each time the FUNC button is pressed, the mode is switched as shown below.

Standby

Paper type selection mode

Paper saving mode

Set condition printing mode

FUNC DOWN SETUP

GAMMA FEED

Buzzer set mode

14

2

Adjust a numeric value by pressing } or { button.

Adjustable items of each function mode are as follows.

FUNC DOWN SETUP

GAMMA FEED

Indicator/Adjustable

item

Paper type
selection
mode

Paper saving
mode

Printer condi­tion printing
mode

Buzzer set
mode

Adjustment contents

Mode to select paper type.

: Standard paper

: High density paper

Mode to select paper saving mode.

: Paper saving mode OFF
: Paper saving mode ON

Mode to select whether the printer conditions will be printed
over the image or not.

: The printer conditions are not printed.
: The printer conditions are printed.

Mode to select whether the buzzer will sound or not.

: Buzzer does not sound. (Sounds only at occurrence of

error)

: Buzzer sounds.

3

When completing setting the function, press the SET button.

The set functions will not be lost even if the power is turned off.

15

10

ERROR DISPLAY

When an error in operation occurs, an audible alarm and a
visible error is displayed in the LED indicator.

Cause/Error display

11

1

No paper

11

Cause/Error display

22

2

Overheat

22

Symptom/Remedy

[Symptom]

• When the paper runs out or the paper is not installed, printing
becomes impossible and alarm tone is given.
In this case, all the functions of buttons and switches become
invalid.

[Remedy]
Install brand-new paper according to "5. INSTALLATION OF

PAPER" on page 8.

Symptom/Remedy

[Symptom]

• When the head gets overheated, "

indicator and alarm tone is given.
In this case, all the functions of buttons and switches
become invalid.

[Remedy]
Wait until the head is cooled down.

" is displayed on the

Cause/Error display

33

3

Button input

33

error

Symptom/Remedy

[Symptom]

• An alarm tone is given once, " " is displayed for one second
in the indicator, and button operation is nullified in the following
cases:

• The COPY button is pressed first after the power is turned
on.

• The DOWN, UP, SET or GAMMA button is pressed when
the MODE switch No. 1 is set to ON.

• Any button on the front panel is pressed when one of the
other error messages is displayed on the LED.

16

Cause/Error display

44

4

Door error

44

Symptom/Remedy

[Symptom]

• When the door opens, an alarm tone is given.

[Remedy]
Close the door.

Cause/Error display

55

5

Gear lock error

55

Symptom/Remedy

[Symptom]

• When the thermal head does not automatically go up after
printing, an alarm tone is given.

• " " is displayed in the indicator and all the functions of buttons
and switches become invalid.

[Remedy]
Turn the power off. Then turn it on again.

17

STATUS AND MODES

11

Set state/Mode

Power off
Stand-by

Print state

Copy state

γ-curve set mode (γ-curve)

Paper type setting mode

Paper saving mode

Set condition printing mode

Buzzer setting mode

LED display

Left

Point and

right

,

,

,

,

Contents of right
side LED display

Power off

During data receiving

During printing

Number of copies

,

γ-curve No.

Standard / High density

Out/ In (OFF/ON)

Out/ In (OFF/ON)

Out/ In (OFF/ON)
Overheat

Error detect state

No paper
Button input error
Door is open.
Gear lock

18

12

USE OF CLEANING PAPER

When the thermal head is dirty with dust and perspiration, etc., white spots or stripes may
appear on the print. In this case, clean the thermal head in the following procedure BY
USING THE SUPPLIED CLEANING PAPER.

11

1

Turn on the power.

11

22

2

Open the door.

22

N

E

P

O

Press the "POWER"
switch to turn on the
power.

Switch the left side
lever to the "OPEN"
position.

44

4

Close the door.

44

55

5

Press the "FEED" button.

55

FEED

Close the door

without taking out
the cleaning paper.

Keep pressing the
"FEED" button until

33

3

Insert the cleaning paper.

33

you hear a beep.

Roll the cleaning

paper and install

66

6

Take out the cleaning paper.

into the set.

66

Open the door.

N

E

P

Cleaning paper

O

Take out the

cleaning paper.

Red mark

Adjust the red mark

on the cleaning
paper parallel to the
platen roller.

77

7

Repeat the steps

77

Do not pull out the

cleaning paper while
the door is closed.

33

66

3

-

6

by 2 or 3 times,

33

66

and print 1-2 sheets to verify the

Platen roller

CAUTION

0

It is recommended that after printing 10 rolls of paper the unit be cleaned using the supplied cleaning paper.

0

If the symptom of the dirty head is not corrected even after cleaning, your set needs repairing, contact your dealer.

0

Do not pull out the sheet and the cleaning paper while the door is closed.
This may cause extensive damage on the unit.

0

Never use other cleaning papers. It may cause damage to the thermal head.

0

This cleaning paper should be used only for cleaning the thermal head. Do not use it for other purpose.

Cleaning paper

cleaning effect.

19

13

Pin number

18

1

36 19

PARALLEL DATA INTERFACE

• Connector JD36SL or equivalent (36 pin)

• Input level TTL

• Parallel input connector port

Signal allocation (Signal : Compatible)

PARALLEL TERMINAL SIGNAL

Return

Pin No.

pin No.

119

2

20

3

21

4

22

5

23

6

24

7

25

8

26

9

27
28

10

29

11

12

13

14

16•17

18

19 - 30

31

16

32
15•

33 - 35

36

Signal

STROBE PC/DP

DATA1(LSB)

DATA2
DATA3
DATA4
DATA5
DATA6
DATA7

DATA8(MSB)

ACK

(ACKNOWLEDGE)

BUSY

P•E

(PAPAER END)

SELECT
AutoFd

GND

High
GND

INIT

Fault

NC

SelectIn

From/To

PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP
PC/DP

PC/DP

PC/DP

Function

Strobe pulse for data reading. Incoming pulse width shoud be

0.5µs minimum. At regular conditions, “High” data will be read
after becoming “Low”.

High: data 1
Low: data 0

Information will be expressed for parallel data of every signal
from bit No.1 to No.8.

The signal is yielded after data input has ended by a data
reception acknowledgement pulse.

High: DP data is not accepted.
Low: DP data is accepted.
The signal becomes “High” in the following cases:

• During data entry
High: No paper

Low: Paper available
High

High
Earth
PeripheralLogicHigh
Earth

Clears sending data to this unit. (Low) Incoming pulse width
should be 100µs minimum.

Low: Abnormal condition occurs in DP. (e.g. error)
Unused

Low

DP : Digital printer
PC : Personal computer

20

• Parallel input connector port
Signal allocation (Signal : Nibble)

Return

Pin No.

pin No.

119

2 - 9 20 - 27 Unknown

28

10

11 29
12
13
14

16•17

18

19 - 30

31

16

32
15•

33 - 35

36

Signal

HostClk

PrtClk
PtrBusy

AckDataReq Data3, Data7

Xflag

HostBusy

GND

High

GND

Init

DataAvail

NC

1284 Active

From/To

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

PC/DP

Function

High
Unknown
Sends data in “Low” when HostBusy is “Low”. After HostBusy

turns “High”, this signal becomes “High”.
Data4, Data8(MSB)

Data2, Data6
High: DP is on BUSY status.

Low: DP can send data.
Earth

PeripheralLogicHigh
Earth
Clears sending data to this unit. (Low) Incoming pulse width

should be 100µs minimum.

Data1(LSB), Data5

Unused

Becomes “High” when DP requests each mode of IEEE1284.

21

• Parallel input connector port
Signal allocation (Signal : ECP)

Return

Pin No.

pin No.

119

2

20

3

21

4

22

5

23

6

24

7

25

8

26

9

27
28

10

29

11

12

13
14

16•17

18

19 - 30

31

16

32
15•

33 - 35

36

Signal

HostClk

DATA1(LSB)

DATA2
DATA3
DATA4
DATA5
DATA6
DATA7

DATA8(MSB)

PeriphClk

PeriphAck

AckReverse

Xflag

HostAck

GND

High

GND

Reverse Request

Periph Request

NC

1284 Active

From/To

PC/DP

PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP
PC/DP

PC/DP

PC/DP

PC/DP

PC/DP
PC/DP

PC/DP
PC/DP

PC/DP
PC/DP

PC/DP

Function

Forward data transfer : Becomes “Low” when PeriphAck is

“Low” and there is data to be read. Returns to “High” when

PeriphAck becomes “High”.

High: data 1
Low: data 0

Information will be expressed for parallel data of every signal
from bit No.1 to No.8.

Reverse data transfer : Sends “Low” data when HostAck is
“Low”. Returns to “High” when HostAck becomes “High”.

Forward data transfer:
High: DP is on BUSY status.
Low: DP can accept data.

High: Forward data transfer (Receive)
Low: Reverse data transfer (Send)

High: During supporting ECP mode
Reverse data transfer:

High: PC is on BUSY status.
Low: PC can send data.
Earth

PeripheralLogicHigh
Earth

Low : When PC requests DP to send data
Low : When DP requests PC to send data
Unused

Becomes “High” when DP requests each mode of IEEE1284.

22

14

MAINTENANCE

Turn off the power for maintenance.

Maintenance of Main Unit

Wipe off stains of the front panel with a soft cloth.
When the panel is heavily stained, wipe of with the cloth
moistened with neutral cleanser diluted by water and finish with
a dry cloth.

Maintenance of Rubber Roller

When the rubber roller is dirty with dust, etc., a black spot may
appear on the print.
In this case, eliminate the dust on to the rubber roller with a
blower or a brush.

Rubber roller

Cleaning of Thermal Head

When the thermal head is dirty with dust, etc., white spots or
stripes may appear on the print.
In this case, clean the thermal head according to "12. USE OF
CLEANING PAPER".

Note: After installation of new roll of paper, dust on the paper will

generally require 2 to 3 prints to be made before the dust
is eliminated.

23

15

Type: Digital Monochrome Printer
Model: P91DW

Power supply and
power consumption: 120V AC, 50/60Hz, 1.4A

Connection terminal: Parallel data interface (36 pin female type)
Dot resolution: 1024 x 1024 pixels (Standard)

Gradation: 256 gradations
Printing speed: 5.1 sec (Standard)
Print size: 4" x 4" (100mm x 100mm) (Standard)

Operating conditions: Temperature 41 - 104˚F (5-40˚C)

External dimensions: 6.1" x 3.8" x 11.8" (154mm x 97mm x 300mm); W x H x D

SPECIFICATIONS

220-240V AC, 50/60Hz, 0.8A

(Max. 1024 x 5120 pixels)

(Max. 4" x 20" (100mm x 500mm))

Humidity 20 - 80% RH (No dewing)

Weight: 6.8 lbs (3.1kg)

Standard accessories: AC power cord........................................................... 1 piece

Thermal paper K65HM .................................................. 1 roll

Cleaning paper .......................................................... 1 sheet

Printer driver ...................................................... 1 floppy disk

Optional accessory: Thermal paper K65HM, K65H, K61B, K61S

SERVICE INFORMATION

Before requesting service please review this operation manual to correct minor complaints.
If you are unable to correct the problem, consult your MITSUBISHI Dealer or MITSUBISHI
Service Department.

DO NOT ADJUST ANY CONTROLS NOT DESCRIBED IN THIS OPERATION MANUAL.
DO NOT REMOVE THE PROTECTIVE ENCLOSURE OF THIS UNIT.

24

MITSUBISHI ELECTRONICS AMERICA, INC.

5665 PLAZA DRIVE P.O. BOX 6007
CYPRESS, CA 90630-0007, USA
TEL [phone] FAX [phone]

Mitsubishi Electric Europe B.V.

UK Branch

Travellers Lane, Hatfield, Herts. AL10 8XB, England, U.K.
Phone [phone] FAX [phone]

German Branch

Gothaer Strasse 8, Postfach 1548, 40880 Ratingen 1, Germany
Phone [phone] FAX [phone]

French Branch

25, Boulevard des Bouvets - 92741 NANTERRE cedex
Phone [phone] FAX [phone]

Italian Branch

Centro Direzionale Colleoni, Palazzo Perseo-Ingresso 2,
Via Paracelso 12, 20041 Agrate Brianza, (Milano) Italy
Phone [phone] FAX [phone]

Benelux Branch

Nijverheidsweg 23 A, 3641 RP. Postbus 222, 3640 AE Mijdrecht
Phone [phone] FAX [phone]

Spanish Branch (Barcelona)

Sucursal en españa
Polígono Industrial "Can Magí", Calle Joan Bucallà 2-4,
Apartado de Correos 420, 08190 Sant Cugat del Vallês,
Barcelona, Spaín
Phone [phone] FAX [phone]

Manufactured by Mitsubishi Electric Corporation

1 Zusho Baba, Nagaokakyo-City, Kyoto Japan

Made from recycled paper

871C590A6 PRINTED IN JAPAN