Title:
RECORDER AND METHOD FOR DETECTING INK JET STATE
Document Type and Number:
Japanese Patent JP3495898
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To detect ink jet state with high accuracy in real time by applying a single pulse signal different from a double pulse signal based on an input image signal at the time of test ink jet during scanning at a recording head.
SOLUTION: In a recorder where a carriage 15 holding a recording head 5 reciprocates in the main scanning direction, a photosensor 8 for detecting an ink drop jetted from the recording head 5 is disposed oppositely to the nozzle array of the recording head 5 between a cap 20 and the end of a recording sheet P. When test jet is performed during scanning of the recording head, ink is jetted preliminarily at the position of the photosensor 8 by applying a single pulse signal set with a minimum pulse width. Based on the detection results from the photosensor 8, operating state of a plurality of recording elements in the recording head 5 is analyzed individually in real time at a control section.
Inventors:
Hiroyuki Kuriyama
Yasushi Miura
Chikanobu Ikeda
Shigeru Watanabe
Masashi Shimizu
Yasushi Miura
Chikanobu Ikeda
Shigeru Watanabe
Masashi Shimizu
Application Number:
JP34532297A
Publication Date:
February 09, 2004
Filing Date:
December 15, 1997
Export Citation:
Assignee:
Canon Inc
International Classes:
B41J2/175; (IPC1-7): B41J2/175
Domestic Patent References:
| JP5293968A | ||||
| JP8150713A | ||||
| JP994948A | ||||
| JP4269549A |
Attorney, Agent or Firm:
Yasunori Otsuka (2 outside)
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