Image processing apparatus

Appareil de traitement d'images


A copying apparatus having a prescanning function for obtaining density data to adjust copy parameters comprises a correction means which eliminates the data obtained from a portion of a predetermined color, from the density data detected in a prescanning process. The density data can be restricted within a predetermined range. The predetermined range can be easily set by the user.




Download Full PDF Version (Non-Commercial Use)

Patent Citations (6)

    Publication numberPublication dateAssigneeTitle
    DE-3606639-A1September 04, 1986Sharp KkBelichtungsueberwachungseinrichtung fuer geraete zur optischen abtastung von vorlagen
    EP-0162196-A1November 27, 1985Konica CorporationMethod of determining the density distribution of an original and of copying the same
    EP-0232805-A1August 19, 1987Mita Industrial Co., Ltd.Automatic image-density control system
    GB-2086077-AMay 06, 1982Konishiroku Photo IndAn automatic image quality adjusting device in a copying machine
    JP-H06136764-AMay 17, 1994Fukuoka Kikai Kk, 福岡機械株式会社鉄筋支持架台のベース支持具
    US-4702590-AOctober 27, 1987Canon Kabushiki KaishaImage density control apparatus

NO-Patent Citations (1)

    PATENT ABSTRACTS OF JAPAN vol. 10, no. 190 (P-474)(2246), 4th July 1986; & JP - A - 6136764 (RICOH) 21.02.1986

Cited By (3)

    Publication numberPublication dateAssigneeTitle
    EP-0442699-A3November 25, 1992Scitex Corporation Ltd.A colour separation scanner
    EP-0554476-A1August 11, 1993Vision Ten Inc.Verfahren und Vorrichtung zum Abtasten und Digitalisieren
    US-5592309-AJanuary 07, 1997Scitex Corporation Ltd.Multiple lens separation scanner