US006439680B1

(12) United States Patent

(10) Patent N0.:

Mochizuki et al.

(54)

US 6,439,680 B1

(45) Date of Patent:

Aug. 27, 2002

RECORDING HEAD, SUBSTRATE FOR USE

6,168,251 B1 *

1/2001 Imanaka et al. ............. .. 347/9

()1? RECORDING HEAD, AND RECORDING

6,193,344 B1 *

2/2001 Otsuka etal. ........... .. 347/11

APPARATUS

6,224,181

*

5/2001

Koitabashi

6,243,111 B1 *

6/2001

Imanaka et al. ............ .. 347/13

(75) Inventors: Muga Mochizuki; Ichiro Saito, both of Yoshiyuki Imanaka, Kawasaki; Nobuyuki Matsumoto, Tokyo; Yoichi

EP EP

Talleya Yokohama an of (JP) ’

(73) Ass1gnee: Canon Kabushlkl Kalsha, Tokyo (JP) ( * ) Notice:

Subject‘ to any disclaimer, the term of this

6-24863

1/1994

C04B/38/02

6-24864

1/1994

......... .. C04B/38/06

57

_

.......... .. B41J/2/355 ......... .. B41J/2/21

JP

( )

_

8/1992 3/1998

JP

.

_

.

.

ABSTRACT

A recording head comprises a plurality of recording ele

Forelgn Apphcatlon Pnonty Data

Jun. 14, 1999

0 499 373 0 827 838

Assistant Examzner—A fred E Duddmg (74) Attorney, Agent, or Firm—FitZpatrick, Cella, Harper & Scinto

(21) Appl. No.: 09/589,159 (22) Filed: Jun. 8, 2000 _

347/15

Primary Examiner_JOhn Barlow

U S C 154 b b 0 d ' ' ' ( ) y ays'

_

. . . . ..

* Cited by examiner

patent is extended or adJusted under 35

(30)

.. ... ... ..

FOREIGN PATENT DOCUMENTS

Yokohama; Hiroyuki Ishinaga, Tokyo;

’

B1

ments for performing recording; a driving circuit for driving

(JP) ......................................... .. 11-167375

the plurality of recording elements; and a predetermined

(51)

Int. Cl. ............................................... .. B41J 29/38

Voltage to be applied to the plurality of recording elements

U-S- Cl- .......................................... ..

from Voltage Supplied from Outside_

(58)

Field of Search .............................. .. 347/10, 11, 60 _

structured, a desired voltage is generated in the interior of the head by use of the predetermined voltage generating

7

voltage generating circuit for generating a predetermined

(56)

References Clted

circuit for performing recording, thus making it possible to prevent the voltage drop Which may take place if the voltage

US. PATENT DOCUMENTS 4,573,058 A 4,613,873 A

47237129 A 2

’

6,076,919

prevent the durability of the heat generating elements from being damaged due to noises. It also becomes possible to set

2/1988 Endo ct a1~

the voltage to be applied to the recording elements at an

A

6,139,125 A

*

347/56

gungaidt " ' ' ' ' ' '

/

6,116,714 A

is supplied from outside through a cable, as Well as to

2/1986 Brooks ..................... .. 347/191 9/1986 Tamukai - 346/33 R 13/

’

the head thus

'''"

optimal value corresponding to the discharge voltage, hence

.6626 et a‘

6/2000

Shirota et al.

9/2000

Imanaka et al.

/ .......

. . . ..

.....

stabiliZing ink discharges ef?ciently.

347/60

. . . .. 347/19

* 10/2000 Otsuka et a1. .............. .. 347/11

19 Claims, 19 Drawing Sheets

PREDETERMINED

‘'52 VOLTAGE GENERATING £4 ¥
V

B1

CIRCUIT

42

a 41

f1 DATA INPUT TEFIMINAL

7/W—1'[—III 43

:i CLK INPUT TERMINAL

T

HNVV ——_—\

CONTROL CIRCUIT

W45

INK JET HEAD

HEATER DFIIVING SIGNAL INPUT TERMINAL

U.S. Patent

Aug. 27, 2002

Sheet 1 0f 19

PREDETERMINED

US 6,439,680 B1

v LTA E INP T

"B ggg??E GENERATING V—A<> TERMISAL ECLR HEATER 12 r,

11; DRIVING

VOLTAGE INPUT ,—<> TERMINAL FoR

CONTROL CIRCUIT

CIRCUIT

DATA INPUT TERMINAL

7w» Ar, ill

: CLK INPUT TERMINAL

13/“ b-\/\/\/\1

All TH‘

'

HEATER DRIVING

.

O SIGNAL INPUT TERMINAL

CONTROL .

CIRCUIT

V"\NV\I )r(_||' HNVN

H‘

{I

'

INK JET HEAD

U.S. Patent

Aug. 27, 2002

Sheet 2 0f 19

US 6,439,680 B1

FIG. 1B INPUT VOLTAGE

:

VA

25

;

OUTPUT 0

5

5

VOLTAGE

A

> TIME

Q

VB > TIME

21

VI

22

Tr1

4'

2V0

VS 24

i< R2

Vre% 23

\25

U.S. Patent

Aug. 27, 2002

Sheet 3 0f 19

V82 PREDETEFIMINED

v51 32%‘? GENERATING

R

321

,J

31

DRIVING CIRCUIT

W A‘, III 33/“ I .

‘I‘

VOLTAGE INPUT

TERMINAL FoR CONTROL cIRcUIT DATA INPUT TERMINAL

5p HEATER DRIVING

SIGNAL INPUT TERMINAL

coNTRoL GIRGUIT

’—\/\M F“

——\/W\,

VOLTAGE INPUT TERMINAL

CLK INPUT TERMINAL

-

WV, WI.

3221

US 6,439,680 B1

'

l'

INK JET

HEAD

U.S. Patent

Aug. 27, 2002

Sheet 4 0f 19

US 6,439,680 B1

PREDETERMINED

V52 VOLTAGE GENERATING in ¥
V

B1

CIRCUIT

42

[1

43

41

7M,

—-—-—? DRIVING CIRCUIT HI

HAN»

a‘ All

/L

a

DATA INPUT TERMINAL I CLK INPuT TERMINAL

H‘

3

Q HEATER DRIVING

.

SIGNAL INPUT TERMINAL

-

coNTRoL

‘I‘

"

INK JET HEAD

U.S. Patent

Aug. 27, 2002

Sheet 5 0f 19

US 6,439,680 B1

FIG. 5 Tr11 51

VI é

RECTIFIER

T

FIRsT

“1/

A

REGULATOR CIRCUIT

v01

CIRCUIT

56 W2

?r

TIMER

SECOND

REGULATOR

‘CIRCUIT

53

TV

R11

‘2 V02

U.S. Patent

Aug. 27, 2002

Sheet 7 0f 19

HEATER

VG

VOLTAGE

TERMINAL 8am?“

PREOETERMINEO

VB g?qLg?gE GENERATING 72

US 6,439,680 B1

71f

VOLTAGE INPUT

TERMINAL FOR HEATER VOLTAGE INPUT

O

I

TERMINAL FOR

DRMNG OIROUIT

OONTROL OIROUIT DATA INPUT TERMINAL

7AM, ,1, HI

CLK INPUT TERMINAL

73/ ’—\/W\/

All 1'“

'

HEATER DRIVING

C’ SIGNAL INPUT TERMINAL

CONTROL cIRcUIT W75

H/WN

—\N\/\

II

‘i

I'll

INK JET HEAD

U.S. Patent

Aug. 27, 2002

Sheet 8 0f 19

US 6,439,680 B1

FIG. 8 vcé—— 81

vlé

82

“21

2V0 R26

R24 Tr22

R23

R21

R25 Vs

84 Vref—-l

P 83

R22

U.S. Patent

Aug. 27, 2002

Sheet 9 0f 19

US 6,439,680 B1

FIG. 9A HEATER voLTAGE coNTRoL SIGNAL

0

I

#TIME

VO' VOLTAGE

I

FOR HEATER V0 APPLICATION 0

1

i

VTIME

INCASE OF SMALL \ I HEATER

5 5

HEATER

, RESISTANCEE

DRIVING SIGNAL

; 0

'

1

‘ 1

:

v0

IN CASE OF LARGE HEATER

RESISTANCE VTIME

I E -------- +3 ---- -

HEATER

‘ i

DRIVING V0

I

voLTAGE o

‘

1

>TIME

U.S. Patent

Aug. 27, 2002

Sheet 10 0f 19

US 6,439,680 B1

FIG. 9B HEATER

I

VOLTAGE CONTROL SIGNAL 0

VOLTAGE

>TIME

l

,

FoR HEATER V0 APPLICATION

_ _

_

_ _I

l l

I l

I

|

>TIME

IIN CASE ioF LESS

I i

IN CASE OF MoRE

ESIMULTANEOUSE :IDRIVING -

HEATER

SIMULTANEOUS DRIVING

DRIVING SIGNAL

0

I? v0

HEATER

>TIME

'

E

Ii ------

I

I ---

‘I

DRIVING V0’ ““ "

VOLTAGE

>TIME

U.S. Patent

Aug. 27, 2002

Sheet 11 0f 19

US 6,439,680 B1

FIG. 9C HEATER

‘

VOLTAGE CONTROL SIGNAL 0

=TIME

VO II VOLTAGE

,

FOR HEATER V0 APPLICATION

>TIME IN CASE OF LOW DISCHARGE

FREQUENCY

HEATER DRIVING SIGNAL 0 I

IN CASE OF HIGH DISCHARGE FREQUENCY

l

:

VO HEATER

,

DRIVING V0 VOLTAGE >TIME

U.S. Patent

Aug. 27, 2002

Sheet 12 0f 19

US 6,439,680 B1

FIG. 9D REATER VOLTAGE CONTROL SIGNAL

or

VOLTAGE FOR HEATER APPLICATION V0.

0

>TIME

E

I

HEATER

:l PRE _ PULSE :l

DRIVING

i

SIGNAL

=

O

E

E I

I

l

I i v0

HEATER

------- --:

, E

DRIVING "0 a

VOLTAGE

i

I

i1 I '

MAIN PULSE

U.S. Patent

Aug. 27, 2002

Sheet 13 0f 19

US 6,439,680 B1

FIG. 9E HEATER VOLTAGE CONTROL SIGNAL 0

VOLTAGE

FOR HEATER APPLICATION VO,____ 0

II

HEATER DRIVING SIGNAL 0

vO1 HEATER DRIVING

VOLTAGEVQ' 0

>TIME

U.S. Patent

Aug. 27, 2002

Sheet 14 0f 19

US 6,439,680 B1

U.S. Patent

Aug. 27, 2002

Sheet 15 0f 19

US 6,439,680 B1

US. Patent

Aug. 27, 2002

Sheet 16 0f 19

US 6,439,680 B1

U.S. Patent

Aug. 27, 2002

Sheet 17 0f 19

US 6,439,680 B1

FIG. 13 RECORDING APPARATUS

2000 HEAD

307w HEAD DRIVER 302 /\/ 303~/N

ROM <:> 3040

CPU

RAM <:> DRIVING

MOTOR

MOTOR <: DRIVER <:

s

306

5

ii

305

3010 INPUT /OUTPUT INTERFACE

{} 401 300

HOST COMPUTER

U.S. Patent

Aug. 27, 2002

Sheet 18 0f 19

US 6,439,680 B1

%

<5

O Eu) oz

8 2“) 2

3

<< IE

uJLU

F14IG.

CONTRLCIRUT

HEAD DRIVER

Z

?-< (LU 02

U.S. Patent

§

Aug. 27, 2002

,/

Sheet 19 0f 19

1003

§

JrK U

US 6,439,680 B1

1002

f

rK

1-‘ =- 2-

1005

Af/x/wos

=5 J5 “=

,\/1004 CONTROL CIRCUIT

5

1007

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