SPRT pos76 II User manual

R
SPRT
POS76Ⅱ
ⅡⅡ
Ⅱ Printer
User’s Manual
Beijing Spirit Technology
Development o, Ltd.

SPRT
１
ontent
Part 1 Performance Index······································································2
Part 2 Operation Specifications·····························································5
2.1 Printer Appearance ····································································5
2.2 Interface Connection··································································5
2.2.1 Serial Interface········································································5
2.2.2 Parallel Interface·····································································6
2.2.3 Cas Drawer Interface ····························································9
2.2.4 Power Connection···································································9
2.3 Buttons and Indicators ·······························································9
2.4 Black Mark Localization Control Specifications······················10
2.4.1Print Structure and Print Control In erent Relevant
Parameters ············································································10
2.4.2 Caution for Black Mark print················································10
2.4.3 Black Mark Localization·······················································10
2.4.4 Auto Paper Loading······························································11
2.5 Ribbon Installation···································································12
2.6 DIP Setting ··············································································12
Part 3 Print Control Commands ··························································13
3.1 Summary ·················································································13
3.2 Command Descriptions····························································13
3.2.1 C aracter Control Commands···············································13
3.2.2 Print Position Commands ·····················································16
3.2.3 Grap ics Commands·····························································19
3.2.4 C inese C aracter Commands ··············································20
3.2.5 Black Mark Control Commands ···········································22
3.2.6 Ot er Commands··································································29
Part 4 Cautions for using·····································································33
Appendix Index of Print C aracters····················································33

SPRT
２
Part1 Performance Index
1. Print met od: 9-pin serial bi-directional
2. Print density: 42cpl-210(w ole dot)/420( alf dot)
40cpl-200(w ole dot)/400( alf dot)
3. Valid print widt : 42cpl-42(7×7)/35(5×7)
40cpl-40(7×7)/35(5×7)
4. Print speed: for 76mm paper widt model: 4.4 lines/sec.
for 57mm paper widt model: 5.6 lines/sec.
5. Feeding speed: 80mm/sec.
6. Print font:
IBM c aracter set II, 7×7dots，or 5×7dots
GB2312-80, 15×16 dots
C aracter specifications:
5×7dots(W×H): w ole dot print，orizontal direction occupies
6 w ole dots;
7×7dots(W×H): alf dot print，orizontal direction occupies
10 alf dots;
t ereof，t e size of a w ole dot is:
0. 318mm(W)×0.353mm(H)
7. Interface:
parallel interface, DB25(male) socket, 36-pin CENTRONICS
(female) socket，8-bit parallel interface and supports BUSY or
／ACK ands aking protocol; TTL signal level;
Series interface, DB25(female) socket, supports RTS/CTS
protocol;
Baud rate：9600bps/19200bps;
Data structure: 1 start bit + 8 data bits + 1 or over 1 stop bit(s),
no parity.
Cas drawer control: DC24V，1A，6-pin RJ-11 socket
8. Print command: Compatible wit EPSON ESC/POS command set

SPRT
３
Command Description
HT Horizontal Tab
LF Print and Feed Line
CR Carriage Return
ESC SP Set Rig t Spacing of ASCII C aracters
ESC ！ Set C aracter Print Mode
ESC ％ Select/Cancel User-defined C aracters
ESC & Define User-defined C aracters
ESC * Set Bit-map Grap ics Print
ESC 2 Set C aracter Line Spacing to 1/6 Inc
ESC 3 Set C aracter Line Spacing to n/144 Inc
ESC-n On/Off Underline Print
ESC p Cas Drawer Control
ESC v Transmit Status of printer
ESC u Transmit Status of Equipment
ESC < Restore Print Head Position
ESC@ Initialize Printer
ESC D Set Horizontal Tab Value
ESC J n Print and Feed Paper n/144 Inc
ESC K n Print and Return Paper n/144 Inc
ESC U Select/Cancel Single Directional Print
ESC c 3 Select Paper Tester
ESC c 4 Set Stopping Print W en Paper End
ESC c 5 On/Off switc Button function
ESC d n Print and Load paper n C aracter Lines
ESC e n Print and Return Paper n C aracter Lines
ESC t Select C aracter Set
FS! Set C inese Print Mode
FS w n Select/Cancel C inese Quadruple Mode Print
FS & Select C inese Print Mode
FS. Cancel C inese Print Mode
FS2 c1 c2 d1…dk User-defined C inese C aracters
FS? c1 c2 Cancel User-defined C inese C aracters
FS S n1 n2 Set C inese C aracter Left and Rig t Spacing
GS (F Set Black Mark Localization Offset
GS FF Send Black Mark Paper to T e Initial Print
Position
GS V m n Select Paper Cutting Met od and Cut Paper,
Present Paper
GS r n Transmit Status

SPRT
４
9. Print paper: Hig quality common w ite paper or impact paper roll
Paper widt : 76.0±0.5mm or 57.5±0.5mm
OD: 80mm (max), ID: 10±3mm
Paper t ickness of per layer: 0.06～0.085mm
Impact paper roll (1 original + 1 copy)
Paper t ickness:0.05～0.08mm，
total t ickness≤0.2mm
10. Ribbon: ribbon cassette ERC-39 purple or black
11. Black mark test: black mark printed on t e rig t of t e front of receipt,
its lengt (along line feeding direction) 5mm, widt 12mm(min);
T e reflection rate of black mark part:≤10％，t e reflection rate of ot er
part printed black mark: ＞75％.
12. Power supply: DC 24V±10%，2A（average），10A（max）
power socket: 3-pin socket（A-1009-3P）
13. Buttons and indicators: LF paper feed button and power indicator
(green), error indicator (red), paper end indicator (red)
14. Software function: can realize C inese and ASCII c aracters printed in
t e same line; W en paper is end, suspend printing, after loaded paper
automatically, t en can go on printing t e remaining contents; Can realize
black mark localization print.
15. Dimensions:
outline dimensions: 160（W）×248（L）×142（H）mm
16. Reliability: 9 million lines （MCBF）
17. Environment conditions:
operation temperature: 5～40℃，relative umidity：10～80％;
storage temperature: -20～60℃，relative umidity：10～90％
18. Accessories optional: test switc for paper running out
19. Model Specifications:

SPRT
５
Part 2 Operation Specifications
2.1 Printer appearance
2.2 Interface onnection
2.2.1 Serial interface
Model Cutter Interface
POS76Ⅱ-BS yes serial interface
(DB25 female)
POS76Ⅱ-BP1 yes 36-pin standard print parallel interface
POS76Ⅱ-BP2 yes DB25（male）print parallel interface
POS76Ⅱ-DS no serial interface
(DB25 female)
POS76Ⅱ-DP1 no 36-pin standard print parallel
POS76Ⅱ-DP2 no DB25（male）print parallel interface

SPRT
６
G N D
R T S
T X D
R X D
D S R
D T R
G N D
C T S
D C D
R X D
T X D
7
5
3
2
6
4
5
8
1
2
3
G N D
R T S
T X D
R X D
D S R
D T R
G N D
C T S
D C D
R X D
T X D
7
5
3
2
6
2 0
7
5
8
3
2
T e serial interface of POS76 is compatible wit RSⅡ-232C, it uses DB25
(female) socket, supports CTS/RTS ands aking protocol, its baud rate and
data structure in serial interface mode are 9600bps/19200bps, 8 data bits,
no parity and 1 stop bit.
T e pin order of serial port is as Fig. 2-1 s ows:
Fig. 2-1 Pin Order of Serial Port
T e pin assignment of serial interface is s own in Fig. 2-2:
Note: ① “Source” denotes t e source t at signal come from;
② Logical signal level is EIA.
Fig.2-2 Pin Assignment of Serial Interface
Printer 25pin IBM PC Serial Printer 25pin IBM PC Serial
Socket Interface DB-9 Socket Interface DB-25
Fig.2-3 Connection between POS 76 andⅡ
IBM PC Serial Interface Sketc Map
2.2.2 Parallel Interface
T e parallel interface of POS76 is compatible wit CENTRONICS, it Ⅱ
Pin
No. Signal
Source Description
2 RXD Host Printer receives data from ost
3 TXD Printer Printer transmits data to ost
5 RTS Printer
Signal “MARK” indicates t at t e printer is
“BUSY” and unable to receive data;
“SPACE” indicates t at t e printer is
“READY” for receiving data.
7 GND ——— Signal Ground
1 3
1
2 5
1 4

SPRT
７
uses DB25 (male) socket or 36pin CENIRONICS (female) socket w ic is
optional, supports BUSY and ACK ands aking protocol.
T e pin order of DB-25 (male) parallel port is as Fig. 2-4 s ows:
Fig.2-4 Pin Order of Parallel Port
T e pin assignment of DB25 parallel interface is s own in Fig. 2-5 s ows:
Pin No.
Signal Direction Description
1 /STB In
Strobe pulse to latc data, Reading occurs
at ringing edge.
2
3
4
5
6
7
8
9
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
In
In
In
In
In
In
In
In
T ese signals represent t e 1
st
bit to 8
t
bit
of t e parallel data representatively, eac
signal is at HIGH level w en data is logic
1, and LOW w en data is logic 0.
10 /ACK Out
Answer pulse, LOW level signal indicates
t at data ave already been received and
t e printer gets ready to receive t e next
data.
11 BUSY Out HIGH level signal indicates t at t e
printer is BUSY and can not receive data.
12 PE Out HIGH level signal indicates t at paper
running out.
13 SEL Out
Pulling up to HIGH level signal by a
resistor indicates t at t e printer is on
line.
15 /ERR Out Pulling up to HIGH level signal by a
resistor indicates t at t ere is no error.
14,16,17 NC --- No connection
18-25 GND --- Grounding logical 0 level
Note: （1）“In” denotes inputting to t e printer，“Out” denotes outputting
from t e printer.
（2）Signal level is TTL standard.
Fig.2-5 Pin assignment of parallel interface

SPRT
８
T e pin assignment of 36pin CENTRONICS (female) socket is as
following:
Pin
No. Signal Direction Description
1 /STB In
Strobe pulse to latc data, Reading occurs at
falling edge.
2
3
4
5
6
7
8
9
DATA1
DATA2
DATA3
DATA4
DATA5
DATA6
DATA7
DATA8
In
In
In
In
In
In
T ese signals represent t e 1
st
bit to 8
t
bit of
t e parallel data representatively, eac signal
is at HIGH level w en data is logic 1, and
LOW w en data is logic 0.
10 /ACK Out
Answer pulse, LOW level signal indicates
t at data ave already been received and t e
printer gets ready to receive t e next data.
11 BUSY Out HIGH level signal indicates t at t e printer
is BUSY and can not receive data.
12 PE Out HIGH level signal indicates t at paper
running out.
13 SEL Out Pulling up to HIGH level signal by a resistor
indicates t at t e printer is on line.
32 /ERR Out Pulling up to HIGH level signal by a resistor
indicates t at t ere is no error.
34-36 NC --- No connection
19-30 GND --- Grounding logical 0 level
T e timing c art for interface signal of parallel interface is as Fig.2-6
s ows:
Fig.2-6 Signal Timing C art of Parallel Interface
B U SY
/ A CK
D A TA
/ S TB
0. 5μS
0. 5μS
0. 5μS
0. 5μS
0. 5μS

SPRT
９
Recommend using t e power
supply
t at
offered by
t e
printer
producer,
you can plug t e power cable into t e printer’s power socket, if use ot er
power supply, it s ould meet t e specified voltage and power demands,
and connection s ould be correct, ot erwise it can't guarantee t e printer
works normally, even may damage t e printer.
2.2.3 ash Drawer Interface
POS76 adopts t e RJⅡ-11, 6-pin socket,
as Fig.2-7 s ows:
Fig.2-7 Cas Drawer Interface
T e pin assignment of t e cas drawer interface is defined as follows:
2.2.4 Power Supply onnection
POS76 uses t e external power supply as 24VDC±10Ⅱ％, 2A, power
socket is A-1009-3P model, as Fig. 2-8 s ows:
Fig.2-8 Power Socket
T e pin assignment of t e power supply connection is defined as follows:
2.3Buttons and Indicators
Offer LF paper feed button and power indicator(green), paper out
indicator(red),error indicator(red).
1. Self-test mode：old down t e <LF> paper feed button, turn on t e
power, t en self-test begins automatically.
2. LED indicator specifications: w ile green indicator is on, t is means t e
power is connected, t e paper end indicator is on indicates paper is end.
Pin No. Signal Direction
1 C assis Ground ---
2 Cas Drawer Driver Signal Out
3 Cas Drawer On/Off Status In
4 +24VDC Out
5 N.C. ---
6 Cas Drawer On/Off Signal Ground ---
Pin No. Definition
1 +24VDC
2 GND
3 N.C.

SPRT
１０
3. Buttons: in black mark mode, press t e button once, t e printer feeds
line to t e beginning of t e next page. In normal mode, press t e button,
t e printer feeds line forwards.
Error Indicator：
2.4 Specifications for black mark localization control
2.4.1 Print structure and print control inherent relevant parameters
It is 11mm from t e print ead of print structure to t e position of tearing
paper.
It is 28mm from t e print ead of print structure to t e position of black
mark test switc .
2.4.2 aution for black mark printing
Black mark must be printed on t e rig t of t e front of ①receipt.
T e print size of black mark must be② (W × H): 12×5mm.
③T e blackness of black mark s ould be saturated enoug , t e reflection
rate is ≤10％ ; t e w ite degree of t e ot er parts of t e side t at printed
black mark s ould be w ite enoug , t e reflection rate＞75％.
2.4.3 Black Mark Localization
T is structure supports localization print of black mark paper, t e
realization for black mark localization print, please refer to t e detailed
introduction for black mark control in t is manual.
·Selection for black mark localization control
Select t roug DIP switc .
·Black mark test position
T e position of black mark test switc : t e relation between initial print
position and tearing paper position, please refer to t e following figure.
T e position of black mark tested by t e printer is about 2mm in t e front
of black mark passing t roug black mark test switc center.

SPRT
１１
B model printer D model printer
A=48mm A=51mm
B=28mm B=28mm
C=20mm C=23mm
2.4.4 Auto paper loading
W en t e paper tester switc tests paper run out, paper-end red indicator
will turn on, t e interface PE signal will turn into " 1 " level (parallel),
meanw ile transfer 04H to indicate paper end t roug serial interface, and
wait for loading paper. Open t e upper cover, load paper according to t e
ways s own in t e following figure, in t e course of paper loading
operation, if t e paper tester switc tests again paper is available, paper
loading driver will be started up, t en load paper automatically. If
presently black mark localization is valid, paper will be loaded and black
mark will be tested automatically, paper will be loaded automatically to t e
position of t e beginning of t e page t at set by GS CF command.
Ot erwise it will be loaded to about 80mm.
Notice: W en load paper, make sure to line up t e paper-in slot so t e
paper loads smoot ly into t e printer, slide t e paper wit even strengt
until t e paper loading driver starts up, and presents t e paper out
automatically. If t ere appears paper jam, remove t e paper w en auto
paper loading driver stopped. Cut away t e fold part of t e paper, load t e
paper again. After finis ing t e paper loading, paper-end red indicator goes
dark, t e interface PE signal turns into " 0 " level (parallel), meanw ile
transferring 00H to indicate t at paper is available t roug serial interface,
close t e upper cover, t en tear off smoot ly extra paper along paper-out
slot t at is on t e print ead. Please load t e paper correctly according to
t e following figure illustrated.
Correct Paper Loading Met od
Wrong Paper Loading Met od

SPRT
１２
2.5 Ribbon Installation
POS76 adⅡopts ERC-39（P）ribbon cassette.
Please install t e ribbon according to t e following steps:
1、 Open t e upper cover of t e printer, and appear t e print ead.
2、 Even up t e ribbon according to t e direction indicated by t e
rig t knob on t e ribbon cassette.
3、 T e knob is on t e rig t, put t e ribbon cassette vertically into
t e printer ead, lock t e ribbon in t e printer ead.
4、 Rotate t e knob again and draw t e ribbon straig tly.
5、Close t e upper cover.
2.6 DIP Setting
DIP Switc 1
DIP Switc 2
DIP Function On Off
1 Reserved Reserved Reserved
2 Cutter Selection Yes No
3 Cutter Mode
Selection
Partial
Cutting Full Cutting
4 Reserved Reserved Reserved
DIP Function On Off
1
Select Number of
C aracters of Eac
Line
（CPL）（7×7）/（5×7）
42CPL/35CPL 40CPL/33CPL
2 Select Printing Paper
Widt 57mm 76mm
3 Reserved Reserved Reserved
4 Baud Rate (Serial
Interface) 19200bps 9600dps
5 Select Single/Bi-
directional Print Single directional
Bi-directional
6 Select Black Mark
Mode
Black Mark
Mode Non Black Mark Mode
7 Select C inese
C aracter Mode
C inese
C aracter Mode ASCII Mode

SPRT
１３
Ex-factory Setting
POS76Ⅱ-B
DIP Switc 1 On DIP Switc 2 OFF
POS76Ⅱ-D
DIP Switc 1 On DIP Switc 2 OFF
If c ange t e setting of DIP switc , need to open t e iron plate at t e
bottom of t e printer.
Part 3 Print ontrol ommand
3.1 Summary
POS76II offers ESC/POS print command set, FS C inese print commands.
Eac command is described in following format:
Print Command Function
Format: ASCII: t e standard ASCII c aracter sequence
Decimal: t e decimal numbers sequence
Hexadecimal: t e exadecimal number sequence
Explanation: w at t e command does and ow to use it.
Example: some examples are listed to illustrate t e command for better
understanding.
3.2 ommand Specifications
3.2.1 haracter control commands
ESC SP Set c aracter rig t spacing
Format: ASCII： ESC SP n
Decimal: 27 32 n
Hexadecimal: 1B 20 n
Explanation:
Its unit is alf dot, set c aracter rig t spacing to n alf-dots.
n=0～32
8 Select Print Mode HEXADECIMAL
Code Mode Common Mode
1 2 3 4 1 2 3
4 5 6 7 8
1 2 3 4 1 2 3
4 5 6 7 8

SPRT
１４
Default n=0
ESC ！
Set c aracter print mode
Format: ASCII： ESC ！ n
Decimal: 27 33 n
Hexadecimal: 1B 21 n
Explanation:
ESC ！n is a compre ensive command to set c aracter print mode, is used
for selecting print c aracter size and underline. Eac bit of print parameter
is defined as:
Value
Bit Function 0 1
0 C aracter Selection 5×7 7×7
1 Undefined
2 Undefined
3 Undefined
4 Double eig t Disabled Enabled
5 Double eig t Disabled Enabled
6 Undefined
7 Underline Disabled Enabled
Default: n=0, namely select 5×7 dots, normal c aracter size, no underline.
Notice: s ould select single directional print mode firstly, t en can carry on
double eig t print.
ESC % Select/Cancel User-defined C aracters
Format: ASCII： ESC % n
Decimal: 27 37 n
Hexadecimal: 1B 25 n
Explanation:
Parameter n is one byte, only t e LSB is valid.
W en n=<*******1>B, select user-defined c aracter set;
W en n=<*******0>B, select normal c aracter set.
0≤n≤255，default n=0
ESC & Define User-defined C aracters
Format: ASCII： ESC & s n m [a,P1,P2,…Ps×a]m-n+1
Decimal: 27 38 s n m [a,P1,P2,…Ps×a]m-n+1
Hexadecimal: 1B 26 s n m [a,P1,P2,…Ps×a]m-n+1
Explanation:
ESC & is used to define m-n+1 users-defined c aracters.

SPRT
１５
S specifies t e number of bytes in t e vertical direction. s=1.
N, m denote t e starting c aracter code and ending c aracter code
respectively, from <20>H to <7E>H, t e maximum number of user-defined
c aracter code is 95. 32≤n≤m≤126。
A denotes t e number of dots in orizontal direction, 0≤a≤6（5×7 dots）,
0≤a≤10（7×7 dots）.
P1,p2,……，pa are t e data code of eac defined c aracters.
Example:
＊5×7 dots
W en t e defined c aracter codes are 20H:
ESC & s n m a p1 p2 p3 p4 p5
Command codes < exadecimal>
1B 26 01 20 20 05 3E 48 88 48 3E
＊7×7dots
W en t e defined c aracter codes are 20H:
ESC & s n m a p1 p2 p3 p4 p5 p6 p7
Command codes < exadecimal>
1B 26 01 20 20 07 1E 20 48 80 48 20 1E
ESC t Select C aracter Set
Format: ASCII： ESC t n
Decimal: 27 116 n
Hexadecimal: 1B 74 n
Explanation:
Select c aracter set 0 or 1. n=0～1.
Default: n=0, select c aracter set 0 ( IBM c aracter set II)
P1
P2
P3
P4
P5
P6
MS B
LS B
P 1 P 2 P 3 P 4 P 5 P 6
M S B
L S B
P 7
P8
P9
P10

SPRT
１６
3.2.2 Print Position ontrol ommands
HT Horizontal Tab
Format: ASCII： HT
Decimal: 9
Hexadecimal: 09
Explanation:
Print position is gone along to t e next orizontal tab position.
If t e current print position is beyond t e last orizontal tab position, t en
command HT is invalid.
Horizontal tab position is set by ESC D command.
LF Print and Feed Line
Format: ASCII： LF
Decimal: 10
Hexadecimal: 0A
Explanation:
Print t e content in t e buffer and feed paper one line. Only feed paper one
line if buffer is empty.
CR Print and Carriage Return
Format: ASCII： CR
Decimal 13
Hexadecimal 0D
Explanation:
Print t e content in t e buffer but don’t feed paper.
ESC - n Underline Command
Format: ASCII： ESC - n
Decimal: 27 45 n
Hexadecimal: 1B 2D n
Explanation:
n=0 or 48, cancel underline. Default n=0.
n=1 or 49, select underline.
ESC J Print and Feed Paper n/144 inc
Format: ASCII： ESC J n
Decimal: 27 74 n
Hexadecimal: 1B 4A n
Explanation:
Print t e data in t e buffer and feed paper n/144 inc （n×0.176mm）.

SPRT
１７
AA
n=0～255.
T is command is only valid to current line print, does not c ange t e line
spacing value set by ESC 2，ESC 3 commands.
ESC K n Print and Return Paper n/144 inc
Format: ASCII： ESC K n
Decimal: 27 75 n
Hexadecimal: 1B 4B n
Explanation:
Print t e data in t e buffer and return paper n/144 inc （n×0.176mm）
n=0~255
ESC d Print and Feed paper n C aracter Lines
Format: ASCII： ESC d n
Decimal: 27 100 n
Hexadecimal: 1B 64 n
Explanation:
Print t e data in t e buffer and feed paper n c aracter lines. n＝0～255.
ESC e n Print and Feed Paper n C aracter Lines
Format: ASCII： ESC e n
Decimal: 27 101 n
Hexadecimal: 1B 65 n
Explanation:
Print t e data in t e buffer and return paper n c aracter lines. n＝0～255.
ESC 2 Set C aracter Line Spacing to 1/6 inc
Format: ASCII： ESC 2
Decimal: 27 50
Hexadecimal: 1B 32
Explanation:
Set c aracter line to 1/6 inc .
BB 1/6 inc

SPRT
１８
ESC 3 Set line spacing to n dot lines（n／203 inc ）
Format: ASCII： ESC 2
Decimal: 27 51
Hexadecimal: 1B 33
Explanation:
Set line spacing to n/144 inc . =0～255.
T e initial default of t e printer is n=24（1/6 inc ）.
ESC D Set Horizontal Tab Value
Format: ASCII： ESC D [n]k NUL
Decimal: 27 68 [n]k 0
Hexadecimal: 1B 44 [n]k 00
Explanation:
Set orizontal tab position to n1,n2,...,nk.
k=1～32, t at means you can set 32 orizontal positions at most.
All orizontal tab positions (ni ) are wit in t e line widt allowed by t e
printer, w en c oosing 5×7 dots mode, n maximum is 35, w en c oosing
7×7 dots mode, n maximum is 42.
Horizontal tab position is stored by being calculated into absolute dot
position according to current c aracter 5×7 dots, 7×7 dots, or C inese
c aracter 15×16 dots mode (including c aracter spacing ), so, t e widt of
double-widt c aracters s ould be twice of t e widt of normal c aracters.
After carried out ESC D command, it no longer influences t e tab position
t at as been already set if c ange t e category and size of c aracters, so as
to ensure t at C inese c aracters and c aracters can be mixed in one line,
or enlarge and dwindle t e c aracters orizontally , t e tab can still be
orderly w ile using.
NUL is added at t e end, denotes t is command is over.
ESC D NUL command is used to clear all orizontal tab positions, and HT
command is invalid t at be carried out later.
ESC U Cancel/Select Single Directional Print
Format: ASCII： ESC U n
Decimal: 27 85 n
Hexadecimal: 1B 55 n
Notice: nk>nk-1 is necessary, if nk<nk-1, printer will t ink t is
command as already been over, t e following command parameter
will be considered to be normal printing data.

SPRT
１９
Explanation:
Select/cancel single directional print. n=0～255，only t e lowest bit is
valid.
W en n=<*******1>B, Select single directional print;
W en n=<*******0>B, Select bi-directional print;
Default: n=0.
3.2.3 Graphics commands
ESC * Set Bit-map Grap ics Print
Format: ASCI: ESC * m n1 n2 ［d1,d2］n1+256×n2
Decimal: 27 42 m n1 n2 ［d1,d2］n1+256×n2
Hexadecimal: 1B 2A m n1 n2 ［d1,d2］n1+256×n2
Explanation:
m=0,1. 0≤n1≤255， 0≤n2≤3，0≤d≤255。
n1, n2 are two-bits of exadecimal number, n1 is t e low byte, n2 is ig
byte, denote t e widt of printing grap ics set by ESC commanded, t e
number of dots is wit in t e maximum line-widt dots number of t e
printer.
W en m=0, select normal print, maximum print dots number is 210.
W en m=1, select alf dot print, maximum print dots number is 420.
At t is moment t e adjacent two dots of eac dot-line can’t be 1.
Definition for d is:
Bit-map Grap ics Data
Notice: W en in bi-directional print mode, t e print speed is faster
t an t at in single directional mode, but may appear t e p enomenon
t at it is not neat correctly from ead to foot , t is is caused by its
own principle of t e printer’s structure, belonging to normal
p enomenon.
Notice:
1. Please select single directional print mode wit ESC U command
before printing t e bit-map grap ics.
2. Allow printing bit-map grap ics and c aracters in t e same line.