US006612675B1
(12) United States Patent
(10) Patent N0.: US 6,612,675 B1 (45) Date of Patent: *Sep. 2, 2003
Takahashi
(54)
IMAGE FORMING SYSTEM AND
4,446,470 A
5/1984 Sugiyama et a1. ...... .. 347/43 X
APPARATUS CONSTITUTING THE SAME
4,459,600 A 4,463,359 A
7/1984 Sato et al. .................. .. 347/47 7/1984 Ayata et al. . 347/56
(75) Inventor: Kazuyoshi Takahashi, Kawasaki (JP)
45277885 A
7/1985 Ayaia ePaL
4,558,333 A -
_
-
-
-
4,595,931 A
(73)
Asslgnee' Canon Kabushlkl Kalsha’ Tokyo (JP)
(ak)
Nome:
.
.
.
*
4,608,577 A
.
6/1986
Toganoh etal.
...... ..
347/105X
8/1986 H011 .......................... .. 347/66
4,614,967 A
Thls. patent 1.5511801 on a Commued pros‘
347/2
12/1985 Sugitani et al. ............. .. 347/65
9/1986
4,631,548 A
Sa ana i ..
12/1986 Miibrangdt
347/43 X
.... .. 347/15
ecunon aPPhCamn ?led under 37 CFR
4723 129 A
2/1988 Endo et a1. ..
..... .. 347/56
15301), and is subjeflt t0 the tWent)’ year
4,725,849 A
2/1988 Koike et a1. .
347/106
patent term provlslons 0f 35 USC-
4,740,796 A
4/1988 Endo et a1. ..
154(a)(2).
4,748,453
4,774,528 A
9/1988 Kato .................... .. 358/298 X
Subject to any disclaimer, the term of this patent is extended or adjusted under 35
4,814,891 A * 4,984,181 A
3/1989 Uchiyama et al. ........ .. 358/296 1/1991 Kliman et a1~ ~~~~ ~~
U_S_C_ 154(k)) by 0 days
5,023,631 A
6/1991 Negishi et al. ........... .. 347/129
A
*
5/1988
Lin etal.
.....
347/56 . . . . . .. 347/41
FOREIGN PATENT DOCUMENTS
(21) Appl. No.: 08/531,273 (22)
Filed:
Sep. 20, 1995
DE
2025191
11/1969
DE
2360270
6/1974
EP
0 421 806
4/1991
Related US. Application Data (62)
(List continued on next page.)
Division of application No. 08/066,376, ?led on May 25, 1993, now Pat. No. 5,984,454.
(30)
(74) Attorney, Agent, or Firm—FitZpatrick, Cella, Harper &
Foreign Application Priority Data
Scinto
May 25, 1992
(JP) ........................................... .. 4-132851
Jul. 21, 1992
(JP) ........................................... .. 4-193933
Jul. 28, 1992 Jul. 28, 1992
(JP) (JP)
Feb. 18, 1993
4-201620 4-201622
(JP) ........................................... .. 5-028914
(51)
Int. Cl.7 ............................................... .. B41J 29/38
(52)
US. Cl. ....................................................... .. 347/16
(58)
Field of Search ............................ .. 347/16, 5, 101,
347/104, 105, 106, 43; 226/43, 42, 8 (56)
Primary Examiner—Judy Nguyen
References Cited
(57)
ABSTRACT
Acolor image forming system alloWs color image formation
using a color (special color) except for yelloW (Y), magenta (M), cyan (C), and black (BK) normally used in color image recording. Palette tables in Which data de?ning use of the special colors (S1 to S4) in addition to Y, M, C, and BK are supplied from a host image data supply apparatus to a printer. At the same time, image data is transmitted in the form of data for alloWing selection of the de?ned data in the palette tables. The printer uses Y, M, C, and BK heads and heads of the special colors S1 to S4. A control unit in the
printer stores each palette table for each color (508) and
U.S. PATENT DOCUMENTS
outputs a driving signal to the corresponding head on the 4,214,276 A 4,261,011 A 4,313,124
A
4,345,262 A
7/1980 Pugsley et al. ........... .. 358/256 4/1981 Knop ........................ .. 358/75 1/1982
Hara
. ... ... .. ...
. . . ..
basis of the corresponding palette table.
347/57
8/ 1982 Shirato et al. .............. .. 347/10
m
m:
18 Claims, 56 Drawing Sheets
US 6,612,675 B1 Page 2
FOREIGN PATENT DOCUMENTS FR FR
2 280 274 2280274
2/1976 2/1976
JP JP JP JP
60-71260 62-53492 2-84593 2-187343
4/1985 3/1987 3/1990 7/1990
GB
1228878
4/1971
JP
2-235753
GB
2 132 052
6/1984
JP
2-245335
10/1990
GB
2 218 541 A
JP
3-46589
7/1991
JP JP JP
54-56847 59-123670 59-138461
JP
448358
1/1992
* 11/1989
5/1979 7/1984 8/1984
........... .. B65C/9/44
* cited by examiner
*
9/1990
................ .. 347/16
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