Title:
濃度測定装置
Document Type and Number:
Japanese Patent JP4198346
Kind Code:
B2
Abstract:
The present invention relates to a densitometry device that can perform suitable densitometry with minimum required light amounts and can achieve space savings. An angle theta between a reference optical axis of a light source, which is an LED chip, and an optical axis, according to a photoelectric conversion element, of a density measurement optical system is set to, for example, 52°. Light-emitting chips, which emit each of red, green and blue light, are provided inside a cannon shell-shaped light-emitting portion. These light-emitting chips are arranged in a straight line along a direction of conveyance of a color patch chart. Consequently, inclination angles of the light-emitting chips with respect to a measurement axis of the density measurement optical system will always change consistently with each other, and no difference between the inclination angles of the different colors will occur.
Inventors:
Atsushi Ueshima
Application Number:
JP2001304127A
Publication Date:
December 17, 2008
Filing Date:
September 28, 2001
Export Citation:
Assignee:
FUJIFILM Corporation
International Classes:
G01J3/10; G01N21/27; G01N21/01; G01N21/47; G01N21/59; G03B27/54
Domestic Patent References:
| JP2001111777A | ||||
| JP2000039747A | ||||
| JP2089350U | ||||
| JP11326059A | ||||
| JP7297996A | ||||
| JP8138168A | ||||
| JP5335791A |
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda
Kato Kazunori
Katsuichi Nishimoto
Hiroshi Fukuda