IMAGE FORMING DEVICE

PROBLEM TO BE SOLVED: To automatically correct image deviation with high accuracy without being influenced by the offset of the carrying speed of a belt. SOLUTION: A correction mark forming part 116 transfers two lines of color mixture marks obtained by deviating and superposing two-color marks bein...

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Bibliographische Detailangaben
Hauptverfasser:	NAKAYASU TAKAFUMI, NAGATOMI TSUTOMU
Format:	Patent
Sprache:	eng
Schlagworte:	CINEMATOGRAPHY CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES MAGNETOGRAPHY PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To automatically correct image deviation with high accuracy without being influenced by the offset of the carrying speed of a belt. SOLUTION: A correction mark forming part 116 transfers two lines of color mixture marks obtained by deviating and superposing two-color marks being K-C, K-M and K-Y right and left on the belt being a moving body by plural image carriers as a mark for correcting the image deviation between color images. A correction value calculation part 118 detects the lightness pattern of the color mixture mark lines transferred to the moving body and the correction value of the image deviation between the color images is calculated from the phase of the lightness pattern. A positional deviation correction part 120 automatically corrects the deviation between the color images based on the correction value obtained by the calculation part 118.