USO0RE42742E

(19) United States (12) Reissued Patent

(10) Patent Number:

Sakakibara et a]. (54)

US RE42,742 E

(45) Date of Reissued Patent:

IMAGE INPUTTINGAPPARATUS AND

5,894,356 A *

IMAGE FORMING APPARATUS USING

5,973,802 A * 10/1999 Hirota et a1.

FOUR-LINE CCD SENSOR

(75) Inventors: Jun Sakakibara, Tokyo (JP); Koji Tanimoto, KanagaWa-ken (JP)

4/1999 Yoo ............................. .. 358/515

6,804,033 B1*

10/2004

6,958,835 B2 7,046,402 B2

10/2005 Sakakibara et a1. 5/2006 Watanabe

7,345,795 B2 7,489,426 B2 2003/0053157 A1

3/2003 Sakakibara et a1.

(Continued)

Toshiba Tec Kabushiki Kaisha, Tokyo

(JP)

FOREIGN PATENT DOCUMENTS JP

(21) Appl.No.: 11/976,452

10-56577

2/1998

(Continued)

Oct. 24, 2007 OTHER PUBLICATIONS

Related US. Patent Documents

U.S. Appl. No. 11/187,826, ?led Jul. 25, 2005, Sakakibara et a1.

Reissue of:

(64) Patent No.:

(51)

358/521

Hara ........................... .. 358/522

3/200g Ando 2/2009 HashiZume

(73) Assignees: Kabushiki Kaisha Toshiba, Tokyo (JP);

(22) Filed:

Sep. 27, 2011

6,958,835

Issued:

Oct. 25, 2005

Appl. No.: Filed:

09/955,090 Sep. 19, 2001

(Continued) Primary Examiner * Cheukfan Lee

(74) Attorney, Agent, or Firm * Foley & Lardner LLP

Int. Cl.

H04N1/46

(57)

(2006.01)

(52)

US. Cl. ...... .. 358/514; 358/512; 358/515; 358/483;

(58)

Field of Classi?cation Search ................ .. 358/505,

358/446; 358/497; 358/474; 358/486

358/5l2i5l4, 516, 520, 515, 446, 445, 483, 358/482, 48, 497, 474; 250/234i236, 208.1; 382/312, 318, 319, 274 See application ?le for complete search history. (56)

A

*

5,721,628 A * 5,805,314 A *

12/1996 2/1998

outputs of the line sensors R, G, B are selectively provided, and in a case in Which a monochrome document is read,

Yamada ...................... .. 358/529 Terada

putted from the line sensor BK at a time of reading a mono to one another. In a case in Which a color document is read,

U.S. PATENT DOCUMENTS 5,719,689

color ?lter is disposed. Amplitudes of signals Which are out putted from the line sensors R, G, B at a time of reading a color document, and an amplitude of a signal Which is out chrome document are adjusted so as to be substantially equal

References Cited

5,583,667 A *

ABSTRACT

A four-line CCD sensor is structured by line sensors R, G, B in Which color ?lters are respectively disposed on surfaces of light receiving elements, and a line sensor BK at Which no

. .... ... .

. . . . ..

output of the line sensor BK is selectively provided.

358/529

2/1998 Takaragi et a1. .... .. 358/518 9/1998 Abe et a1. .................... .. 358/518

22 Claims, 20 Drawing Sheets

Cover for ?xing document 11

Reading position P | l] White reference

uiate 19

Light some 122*» First mirror 13

g‘gr'?,nt stand

Document D

r-n \

?

2

:-1’>2v

F1

L Second carriage 1B

?rst “"1589 1A

|._Z_.|

l‘

; Second mirror 14

f

Iq>v

173 Red Green

Blue Black & White

sensormomma 17 _ L- .J Four-line mirror 15 Collechve lens 16

1

Image inpuitlng apparatus 1

US RE42,742 E Page 2 US. PATENT DOCUMENTS 2003/0081265 A1 2004/0196514 A1 2004/0223196 A1

5/2003 Watanabe 10/2004 Tanimoto et a1. 11/2004 Tanimoto et a1.

NOS/0018267 A1 1/2005 Ando FOREIGN PATENT DOCUMENTS JP JP JP

10436151 A 11027452 A 2000587036

5/1998 1/1999 10/2000

JP

2003-198807 A

7/2003

JP

2003-270731 A

9/2003

JP

2004-088318 A

3/2004

JP JP

2004-266736 A 2005033807 A

9/2004 20005

OTHER PUBLICATIONS

Jun Sakakibara,U.S. PTO Of?ceActi0n,U.S.Appl.N0. 11/187,826, dated Oct 27, 2010, 11 PageS~ Jun Sakakibara, U.S. PTO Of?ce Action, U.S. Appl. No. 11/187,826, dated Jul. 7, 2009,20 pages. Jun Sakakibara, U.S. PTO Final Of?ce Action, U.S. Appl. No. 11/187,826, dated Jan. 20, 2010, 20 pages. * cited by examiner

US. Patent

Sep. 27, 2011

Sheet 1 or 20

US RE42,742 E

Cover for ?xing document 11

K——\ Reading Position P [-77

l

>

Document D

Document stand

3

glass 120

l

q L

i

. ---- --

-l--.

White reference l

.

(“?rst camage 1A

plate 19

S‘econd carriage 18

} l==>gv

--:__

light source 12 I

Second mirror 14

First mirror 13 '- -------- -~-'

5

Four-line CCD

i=g>v

‘ : Third mirror 15

sensor 17

_

~- -~'

Collective lens 16 5

Image inputting apparatus 1

F | e. 1

................................................... "patio

i Scanner control section

I-

5

[100

5

,1065

CPU

Image processing section ——1:—>lmage output

5

|

i

— Image correcting section

5

r—--¢-

ROM

': i

RAM

[1035 [102 l-—

5

CCD driver

f ‘07

5 Document automatic

I

,1045 .

sensing section

:

Scanner motor driver

5

___________________________________________________ "135°

iControl panel

[34 l

E section

E i

Liquid crystal display section

[83 Panel CPU

b - _ Q . - - ~ . - - - - . - _ _ _ _ _

?

[82 E Key pad

_ _ - - - - - - _ _ _ - - - _ - - - - . - -

,1? CCD

5

L'":r ------ -: f1”?

-— Light source control section

i :

,1055

- _ - - - . - - -

i _ _ - -_

US. Patent

Sep. 27, 2011

Sheet 2 or 20

US RE42,742 E

13a Red

L

R. R

Green Blue

/ L

~G ~B

(

~BK

Black &White

US. Patent

Sep. 27, 2011

Sheet 3 or 20

US RE42,742 E

1r 5

Line sensor BK

é

Shift gate (BK) OS-BK :

<——;-

OS-B

5

5

Line sensor B

i

:

Shift , gate (B)

i

Analog shift register (B)

:

5

Line sensor G

i

:

Shift gate (G)

i

Analog shift register (G)

:'

Shift Line _ sensor gate (R)R

i

Analog shift register (R)

;

<—;—‘

OS-R

l

Analog shift register (BK)

<———;—‘

OS-G

SH s'gna'

:i'

<———'—‘

T

ransfer CLKLZ

US. Patent

Sep. 27, 2011

Sheet 4 or 20

US RE42,742 E

1.0

[email protected]

05.

400

500

600

700

800

900

i000 i100 1200

Incident light wavelength A (nm)

F|G.5 1.0

A sensor R Line sensor G

0 6.

l/

/\ 0.0 500

600

Incident light wavelength A (nm)

FlG.6

700

US. Patent

Sep. 27, 2011

Sheet 5 or 20

US RE42,742 E

Spectral distribution characteristic of xenon light source 1.0

0 on

06

25m

0A

02

0.0 300

,/ “w Jive/eh 400

500

600

Wavelength [nm]

FIG.7

700

800

US. Patent

Sep. 27, 2011

Sheet 7 or 20

“8Samg

[

US RE42,742 E

n o on a u l I . a I w ~ u I n . ' 1 a Q o n u

80$Em:mc:Pw2%.c_r..s.n?zaro m

JéE22_231.528“

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ws9E052=sagnés“v

I“a?I

_

w3uMEAm.0.mcs20?e8mr%v

$380;

3$23:0. m .1_ _ .o <@

mad;

US. Patent

Sep. 27, 2011

Sheet 8 or 20

US RE42,742 E

Read color document?

Light accumulating time=t| NT (BK) f1

Light accumulatlngV time=tlNT (RG /B)

Period=t0 (BK)

period=t0 (RGB) 1 V

if

l /

Document scan

l

H85

Selectively process and output line sensor output in correspondence with document type

cilia

Read color document’?

,.,S12 Ught with decreased quantity of

light of ?ght source 4

A5

Selectively process and output line sensor output in correspondence

with document type

[email protected]

.

,SIS .

Light light source at rating |

Document scan

l

v .

US. Patent

Sep. 27, 2011

Sheet 9 or 20

US RE42,742 E

Document stand gas 10

l I

I I

0~Second light source 128 Second mirror 14 First mirror 13 Four-line CCD

......................

.

sensor 1141*" V////A """"""""""" "%Third mirror is

FIG

A

Collective lens 16


L

Document stand glass 10

\

First light source 12A

I

®~Second light source 128 Second minor 14

First mirror 13

=

Four-line CCD sensor 17

FI

Third mirror 15 ' Co || ectlve lens

16



l

A

Flrst light source 12A

| Second light source 128 Second mirror 14

Hrst mirror 13

A?

Four-line CCD

,

sensor 17

FI

Document stand glass 10

Third mirror 15

Collective lens 16

US. Patent

Sep. 27, 2011

Sheet 10 or 20

US RE42,742 E

Read color document ?

[

Light only light source 12A

] LLlght light sources lZA and 12s |

o

L

J

i

4&1

Document scan l

J 85

Selectively process and output line sensor output in correspondence with document type

Ga B

/Gain ampli?er section 22

All

Y"

A

Vref w, A

>

—-—

v t ou



Vout=VlnX(l+B/A)—VrefXB/A Vout=VinX(l-l-B/A), (Vrefzat the time of GND grounding)

[Gain ampli?er section 22 l

IVY

Vin

HQ. 155

bID

-

>—L-—Vout_

US. Patent

Sep. 27, 2011

Sheet 11 or 20

US RE42,742 E

68g52%9:

AU25.2 :8 _.93SE32.

S“5E235

“@#83:2506

m~\m308 E560<1 l _ .0 <3

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EFL_g#5i:g?

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E0 = 5

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im8=02w$9m¢.m058A:2m83

F

US. Patent

Sep. 27, 2011

Sheet 13 or 20

US RE42,742 E

"|_|E."

Eaa“:2:F9053.:;8“

w .m "

m|g=2_|.5?:l6_. m= 25m.25m

"0E8529%5E8335bSE88aB6ESm Asmawwm M m .gmm

Wm T 829 1‘

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2.0;

m8"Emagem255%8&2:m85

u#831_u~50E82»

__5“85.5809.7:_19 1

am:5%5 .

US. Patent

Sep. 27, 2011

Sheet 14 or 20

US RE42,742 E

gs-sKoz -

E """""""""""""""""""""" ":T

03 em!‘

Analog shift register (BK_ODD)

i OS-BKEi :

;

ShiftLinegatesensor (BK_EVEN) BK

5

_

Analog shift register (BK_EVEN)

CLK CLKLZ

Frans er

Shift gate @900)

_

<——;—L

f

SH s'gna'

:

5

JOS-BKEZ ----------------------------------------- n

F I G. 18A

|<

Effective image region (7500 pixels)

>|

OS-BKOi:

ooomoooexooo?Q-m- )QmsXamXam

OS-BKEi:

---- -- )@746X314§)@750

0S-BKO2:

3751 315a a75s)Q----DQ49sX749D(7499

OS-BKE2:

avsiXarsZXs?X ---- -- X7496X749a

7500

US. Patent

Sep. 27, 2011

Sheet 15 or 20

US RE42,742 E

Transfer CLK1, 2

(rs-8m] 5

Analog shift register (BK_ODD)

f OS—BKO2

Shift gate (BK_ODD)

OS_BKE1

AnalogShift shift Shift gate register gate (BK_EVEN) BK(BK_EVEN)

SH signal

; OS-BKE2

Transfer CLK1, 2

FIG.19A

L

Effective image region (7500 pixels)

OS-BKOI:

ooo1)(oooa)@o05)( ---- ~3<3145X3741Xs149

OS-BKEI:

0002X0o04>®00s>Q--- -- X3746X3748X3750

|

OS-BKO2:

X1499X1491 )(1495X ---- -- X3755X3753>
OS-BKE2:

X7sooX749§Xr49sX ---- -- Xs75eXa754X3752X

FIG.19B

US. Patent

Sep. 27, 2011

US RE42,742 E

Sheet 16 0f 20

60 __

__

-_

_-

_.;_5.°

Copy apparatus (copier) [57 I

PCl

[51 i

Image inputting

apparatus

[52

PC2

Recording medium I

(memory)

2

PC3

[53 Various image

i

23%;‘

i

processings section

section

L54 :



.............. "5.5.5.

5 Laser optical system i : i

_______________ _.:.5.6_

1

{Image forming section? \ Image forming apparatus

I58

:

Control panei i

__

__

__

__

__

J

US. Patent

Sep. 27, 2011

US RE42,742 E

Sheet 18 0f 20

INPUT :

Output:

input by manual

output results of printing onto paper

operation of user

F l (3. 22A Copy :

Set document

Set document type Auto color Full color Black

Set document/ Lu paper size

(Liquidpanelcrystal) F I G. 228

Set number of copies

Press start button

Image inputting apparatus and image forming apparatus using four ...

Oct 24, 2007 - Primary Examiner * Cheukfan Lee. (74) Attorney, Agent, or Firm * Foley & Lardner LLP. (57). ABSTRACT. A four-line CCD sensor is structured ...

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