DROPLET MONITORING APPARATUS - FUJI PHOTO FILM CO LTD

Title:

DROPLET MONITORING APPARATUS

Document Type and Number:

Japanese Patent JPH0545354

Kind Code:

A

Abstract:

PURPOSE: To monitor a size of a droplet at the tip of a nozzle of a spot-adapting device.

CONSTITUTION: Light is projected from a side to the tip of a nozzle 3 of a spot-adapting device with a droplet 4 to be spot-adapted formed, a field of view 6a of a constant size including an entire part of the droplet 4 formed lower than the tip end of the nozzle is limited, and light in this field of view is received by a light receiving element 8. An output of the light receiving element 8 is compared with a threshold value by a CPU 10, and a size of the droplet 4 is compared with a reference size. When the output of the light receiving element 8 is larger than the threshold value stored in the CPU 10 as a result of comparison, the CPU 10 issues an alarm signal.

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Inventors:

ARAI KENJI

Application Number:

JP20578791A

Publication Date:

February 23, 1993

Filing Date:

August 16, 1991

Export Citation:

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Assignee:

FUJI PHOTO FILM CO LTD

International Classes:

G01B11/28; G01N33/48; (IPC1-7): G01B11/28; G01N33/48

Attorney, Agent or Firm:

Seiji Yanagida (1 person outside)

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