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
2@5m23
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
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US RE42,742 E
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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
C@
.
,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
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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
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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
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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