(19)
(11) EP 0 705 784 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
18.12.1996 Bulletin 1996/51

(43) Date of publication A2:
10.04.1996 Bulletin 1996/15

(21) Application number: 95117038.0

(22) Date of filing: 18.09.1992
(51) International Patent Classification (IPC)6: B65H 23/032
(84) Designated Contracting States:
CH DE FR GB LI

(30) Priority: 19.09.1991 JP 268501/91
19.09.1991 JP 268502/91
19.09.1991 JP 268503/91
19.09.1991 JP 84303/91 U
19.09.1991 JP 84305/91 U

(62) Application number of the earlier application in accordance with Art. 76 EPC:
92420320.1 / 0540430

(71) Applicant: LINTEC Co., Ltd.
Tokyo (JP)

(72) Inventors:
  • Oumiya, Nobuyoshi
    Kitaadachi-gun, Saitama-ken (JP)
  • Sato, Kazuhiko
    Sakado-Shi, Saitama-ken (JP)
  • Iharagumi, Tadayoshi
    Tsurugashima-shi, Saitama-ken (JP)
  • Nakajima, Iwao
    Urawa-shi, Saitama-ken (JP)
  • Itaki, Nobuyoshi
    Toda-shi, Saitama-ken (JP)
  • Takeda, Yuji
    Kawaguchi-shi, Saitama-ken (JP)

(74) Representative: Guerre, Dominique et al
Cabinet Germain et Maureau 20 Boulevard Eugène Deruelle BP 3011
F-69392 Lyon Cédex 03
F-69392 Lyon Cédex 03 (FR)

 
Remarks:
This application was filed on 30 - 10 - 1995 as a divisional application to the application mentioned under INID code 62.
 


(54) Printing position detection and correction methods for printing device


(57) A printing state detection and correction method for a printing device wherein the improvement consists in that when a pattern or letters are continuously and suitably printed onto a strip-shaped article subjected to printing by means of a duplicator to form a print portion, a variable density indicating portion to serve as a standard for judgement of variable density of each color is printed in the same manner using ink used for the formation of the print portion at a proper position around the print portion to be printed, and at first a standard variable density for each color of the variable density indicating portion is registered as data, next a CCD camera is installed at a proper position through which the strip-shaped printed article after printing passes, the variable density indicating portion is monitored by means of the CCD camera to detect the variable density, and using data obtained thereby, the variable density for each color is compared with said standard variable density for each color, and instruction of correction is not given when the error is within a range of setting of the standard, or instruction of correction is given to a control portion of the printing device when the error is outside the range of setting of the standard so as to control and adjust a sending amount of ink and the like.






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