Cromemco 3355A Specifiche tecniche

r-"

Crornernco

3355A PRINTER

PRODUCT DESCRIPTION

~ CROMEMCO, Inc.

280 Bernardo Avenue

Mountain View, CA 94043

Part no. 023-6007 March 1980

,fM-.-..."

----

PROPRIETARY NOTICE

The information and design disclosed herein were originated by

and are the property of Nippon Electric Company, Limited

(NEC)• NEC reserves all patent, proprietary design,

manufactur ing, reproduction use, and sales rights thereto, and

to any article disclosed therein, except to the extent rights

are expressly granted to others. The foregoing does not apply

to vendor proprietary parts.

Speci fications remain subject to change to allow introduction

of design improvements.

NEC Information Systems, Inc.

5 Militia Drive

Lexington, MA 02173

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'--./

,,--~

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CONTENTS

Page

CHAPTER 1 GENERAL INFORMATION

1 .1 FEATURES ..................•..•....•....•..••...•... 1-1

1.1.1

1.1.2

1.1.3

1.1.4

Print Element ...•.............••..•..••.• 1-1

Spacing and Forms Positioning ..........•• 1-2

Interface Functions and Maintenace Aids .. 1-3

Paper Handling 1-3

1 •2 0 PT ION S ...................•........................ 1- 5

1.2.1

1.2.2

1.2.3

1.2.4

Forms Handling Options ..........•........ 1-5

Cover Assembly .........................•• 1-6

Printer Stand ............•............... 1-6

Power Supply .............•..............• 1-6

~1.3 SUPPLIES AND ACCESSORIES .....•..•..•............... 1-6

1.3.1

1.3.2 Pr int Rib bons ............•..•..•........• 1- 6

Print Thimble ..................•......... 1-7

1.4 SPECIFICATIONS ...............•..................... 1-7

1.5 RELATED DOCUMENTS 1-7

CHAPTER 2 INSTALLATION

2.1 PRELIMINARY INSPECTION .•......•.................•.. 2-1

2.2 UNPACKING/REPACKING INFORMATION 2-1

2.3 SYSTEM REQUIREMENTS 2- 4

2.3.1

2.3.2

2.3.3

Operating Environment ............••...... 2-4

Space and Weight Data 2-4

Power Requirements ............•.......... 2-4

2.4 INSTALLATION PROCEDURES ................•........... 2-4

2.4.1

2.4.2

2.4.3

2.4.4

2.4.5

Visual Inspection .

Power On and Initialization Test .

Diablo-Compatible Interface, Self-Test .

8080 Bus Line Interface Self-Test .

QUME-Compatible Interface Self-Test .

iii

2-4

2-7

2-8

2-9

2-10

CONTENTS (contd)

CHAPTER 3 INTERFACE INFORMATION

Page

-J

3.2 MODEL 5501 DIABLO-COMPATIBLE INTERFACE .

3.1 MODEL 5502 - 8080 BUS LINE INTERFACE •...••.••••••••

3.3 MODEL 5503 - QUME-COMPATIBLE INTERFACE .........•..

3.1.1

3.1.1.1

3.1.1.2

3.1.1.3

3.1.2

3.1.3

3.1.4

3.2.1

3.2.1.1

3.2.1.2

3.2.1.3

3.2.1.4

3.2.1.5

3.2.2

3~2.2.1

3.2.2.2

3.2.2.3

3.2.2.4

3.2.2.5

3.2.3

3.2.4

3.2.5

3.3.1

3.3.1.1

3.3.1.2

3.3.1.3

3.3.1.4

3.3.1.5

3.3.1.6

Interface Lines ....•.....................

Device Select (DSLO) .•.....•.•...••.•••..

Address Bus (ABOO - AB30) .•..........•...

Data Bus (DBOO - DB70) ....•••.••...•....•

Interface Connector Type, Cable and pin

As s i9 nm e n ts .•.•.•.•.•.•.•.•.•.•.•.•.•.........•.•.•.•.•.•.•.•.•.•.•...•

Interface Signals Timing .•..•.•...•....••

Interface Logic Elements •....•........•.•

SPINWRITER Input Lines ............•••.•..

Select Printer .

Data Li nes .

Strobe Lines .

Res tor e to .•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•

Ri bbon Li ft .

SPINWRITER Output Lines .•....••.•••...••.

Ready Lines .•.•...••.•...•..•.......•• .I ••

Check 0 .•.•.•

Pa pe r 0ut " .

Cover Open Cl .•.•.•.•.•.•.•.•.•

Rib bon 0 utc .•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•

Interface Connector Type, Cable, and pin

As s i9 nme n ts .

Interface Signals Timing ...•.•.•.........

Interface Logic Elements .

SPINWRITER Input Lines .

Printer Select .

Data Lines ......................•........

Strobe Lines .

Restore .

Rib bon Li£t .

Top of Form .

3-1

3-13-1

3-5

3-53-5

3-7

3-83-8

3-8

3-93-9 ~J

3-10 3-103-10

3-10

3-11

3-13

3-15

3-153-17

3-17

3-173-17 .-.-/

~CONTENTS (contd)

Page

3.3.2

3.3.2.1

3.3.2.2

3.3.2.3

3.3.2.4

3.3.2.5

3.3.3

3.3.4

3.3.5

SPINWRITER Output Lines ............•.....

Ready Lines .

Check ...............•.....•.......•.•...•

Pa pe r 0ut .

Cover Open ..........•.....•.............•

Ribbon Out .

Interface Connector Type, Cable,'and pin

As 5i9 nme nts •••..••••••••..••••.•.••••.••.

Interface Signals Timing ...........•.....

Interface Logic Elements ~ .

3-18

3-20

3-22

;-----

APPENDIX A DC POWER REQUIREMENTS A-I

APPENDIX B INTERFACE PCB SWITCH FUNCTIONS B-1

Figure

1-1

1-2

2-1

2-2

2-3

2-4

2-5

2-6

ILLUSTRATIONS

Title Page

Print Thimble 1-2

Superscript, Subscript and Plotting Features •• 1-3

Unpacking/Repacking Diagram •.................. 2-2

SPINWRITER Basic Mechanism Dimensions,

Top vi ew 2~ 5

SPINWRITER Basic Mechanism Dimensions,

Fr on tVi ew 0 Cl ••••••••••••••••.••••••••••••••••••••••••••••••••••• 2--5

SPINWRITER Basic Mechanism Dimensions,

Left Side View 2-6

SPINWRITER Dimensions With Cover, Front View .. 2-6

SPINWRITER Dimensions With Cover, Left Side

Vi ew .•...•...•.•.•...•...•.........•.....•.......•.................•...•...•...•.•...... 2- 7

---.-./'

2-7

2-8

2-9

2-10

3-1

3-2

3-3

3-4

3-5

3-6

3-7

3-8

3-9

3-10

3-11

3-12

3-13

3-14

3-15

3-16

3-17

3-18

3-19

3-20

3-21

3-22

3-23

A-I

A-2

Diab1o-Compatib1e Interface PCB Switch

Lac at ion .

Model 5500 Test Pattern (Typical) ......•......

Test Switch Location, G9CUQ Board .

Test Switch Location, G9CUT Board .

8080 Bus Interface Lines ..•...................

8080 Bus Interface Character Command •..•....•.

8080 Bus Interface Carriage Command ...•.......

8080 Bus Interface, Line Feed Command .•....•..

8080 Bus Interface, Input Data .

8080 Bus Interface Timing Diagram .

8080 Bus Interface Logic Elements .........•...

Diab1o-Compatib1e Interface Lines .

Diab1o-Compatib1e Interface Character Data ..•.

Diab1o-Compatib1e Interface Carriage

Movement Data .

Diab1o-Compatib1e Interface, Line Feed Data ...

Print Wheel Strobe Pulse Timing, Diab1Q-

Compatible Interface .............•........•...

Space-Before-Print Timing Sequence .

Space-After-Print Timing Sequence .

Diab1o-Compatib1e Interface Logic Elements .

Qume-Compatib1e Interface Lines .

Qume-Compatib1e Interface, Character Data •....

Qume-Compatib1e Interface, Carriage Movement

Data Cl .•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•.•

Qume-Compatib1e Interface, Line Feed Data .....

Character Strobe Timing, Qume-Compatib1e

Interface .

Space-Before-Print Timing Sequence .

Space-After-Print Timing Sequence .

Diab1o-Compatib1e Interface Logic Elements .

Mother Board Connectors .

Dimensions and Parts Location Area of Board ..~

2-8

2-10

2-11

2-12

3-2

3-3

3-4

3-5

3-6

3-7

3-8

3-9

3-10

3-12

3-13

3-14

3-15

3-16

3-17

3-20

3-21

3-22

A-I

A-2

'_.J

....•

-_/

r- ..

Figure

A-3

B-1

B-2

B-3

ILLUSTRATIONS (contd)

Title Page

Power On Reset Signal (RST) Timing A-4

Model 5502, 8080 Bus-Interface PCB Switch

Functions B-1

Model 5501, Diablo-Compatible Interface PCB

Switch Functions B-1

Model 5503, Qume-Compatible Interface PCB

Switch Functions ...•..•....................... B-2

TABLES

Parts Required for Paper Handling Systems ..... 1-4

Paper width Accommodations ...............•.... 1-4

Model 5500 Specifications 1-8

8080 Bus Interface Connector pin Assignments .. 3-6

Diablo-Compatible Interface Connector pin

Table

1-1

1-2

1-3

3-1

3-2

3-3

3-4

A-l

A-2

Title

As si 9 nme nts •••.•••••.•••••.•••••••••••••••••••

Top of Form Length ....•.......................

Qume-Compatible Interface Connector pin

Ass i9nmen ts •.•.•••.•••••••••.••••.•••••.••••.•

DC Voltages and Pin Connections (PCB) .

Current Ratings and Power Regulations .

Page

3-12

3-18

3-20

A-3

vii

CHAPTER 1

GENERAL INFORMATION

This document descr ibes the NEC Model 5500 Ser ies SPINWRITER

printer basic OEMmechanism with various options.

The Model 5500 SPINWRITERis a microprocessor controlled serial

impact pr inter which pr i nts fully formed character s bidi rec-

tionally at a rate of up to 55 characters per second (maxi-

mum). It is designed for applications in which impeccable

print quality and multiple copy capability are required. The

SPINWRITER

1Sexcellent pr i nt qual i ty permi ts the pr inter to be

the ideal output device for word processing and Optical Char-

acter Recognition (OCR) applications.

The Model 5500 is the basic SPINWRITERmechanism with control

electronics. Options available include a power supply, cover

assembly, forms handling options, and stand with forms recei v-

ing tray. Interface options include Model 5501, Oiablo-

compatible interface; Model 5503, Qume-compatible interface; or

Model 5502, a unique 8080 bus line interface for low cost

interconnection with a compatible controller or computer.

1.1 FEATURES

The Model 5500 Series SPINWRITERhas a range of standard and

optional features that permit it to operate in most

applications required of character printers.

1.1.1 Print Element·

The SPINWRITER's unique small-diameter, low-mass pr int element

is a low-cost, long-life, fiberglass reinforced plastic

thimble. The thimble, Figure 1-1, is produced by cylindrically

arranging and molding 64 individual spring action fingers on

which two characters may be mounted, one above the other, for a

maximum of 128 characters. Print thimbles that contain up to

125 characters have a cutout so that the last characters

printed are fully visible to the operator.

Pri.nt thimble rotate motion is under servo control for fast,

accurate bidirectional positioning; and microprocessor control

selects the fastest route to the next character to be printed.

During 0geration, the print thimble rotates in a horizontal

plane and is lifted up or down to the selected print position.

1-1

Figure 1-1 Print Thimble

The pr int hammer mounted wi thin the pr int thimble str i kes the

selected finger causing it to flex forward and impact against

the ribbon (print medium) which transfers the character image

onto the form in a manner similar to a standard typewriter ..

The ribbon is contained in a cartr idge which

placed. The ribbons are available in black

colors, and come in fabric and multi-strike film.

is eas ily re-

and red/black

Character pr inti ng intensi ty is automatically controlled by an-----./

internal microprocessor in four steps corresponding to each

character. Thi s feature extends pr int thimble life and pro-

duces high quali ty pr inted characters (regardless of type style

used) . Also, an impress ion control swi tch, access ible to an

operator, can further adjust the character impressions to pro-

duce the desired print intensity.

1.1.2 Spacing and Forms Positioning

Advanced servo motor control design for carriage spacing and

print element positioning, and stepper motor control of the

paper movement and ribbon drive system result in exceptional

print quality.

The SPINW""RITERoffers as a standard fea ture 10 and 12 pi tch,

and proportional spacing with bidirectional printing. The

printer can print 136 positions per line (10 pitch) or 163

positions per line (12 pitch) .

Further versatility is offered by its superscripting and sub-

scripting capabilities (refer to Figure 1-2). Graphics and

plotting capabilities are inherent SPINWRITER features.

Character and line posi tions are directly addressable in four

axes, left and right horizontal with a resolution of 1/120th of

an inch, and up and down ver tical with a resol ution of 1/48 th

of an inch (refer to Figure 1-2).

1-2

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