Bilddichtendetektor, Bilderzeugungsvorrichtung mit dem Bilddichtendetektor und Bilddichtendetektionsverfahren

Details

Veröffentlichungs-Nr.

EP3211480

Aktenzeichen

EP17154448

Anmeldetag

2. Februar 2017

Veröffentlichung

30. Januar 2019

Erteilung

30. Januar 2019

Rechtsraum

EP

IPC

G03G15/00

Abstract

An image density detector (50U) for detecting image density of an image borne by an image bearer (31) includes a reference board (56), a light emitter (51), a light receiver (52), an image density calculator (153), and an image density detecting condition corrector (152). The reference board (56) has a spectral reflectance distribution closer to a spectral reflectance distribution of the image forming material than a spectral reflectance distribution of white. The light emitter (51) emits light to the reference board (56) and the image borne by the image bearer (31). The light receiver (52) receives the light emitted by the light emitter (51) and reflected from the image and the reference board (56). The image density calculator (153) calculates the image density of the image based on an output of the light receiver (52) receiving the light emitted by the light emitter (51) and reflected from the image. The image density detecting condition corrector (152) corrects an image density detecting condition based on an output of the light receiver (52) receiving the light emitted by the light emitter (51) and reflected from the reference board (56).

Anmelder

Firma

Ricoh Company, Ltd.

Land

🇯🇵 Japan

Fachgebiete