EP 0742101 A1 19961113 - Ink discharge detecting method for an ink jet recording apparatus
Title (en)
Ink discharge detecting method for an ink jet recording apparatus
Title (de)
Tintenablagedetektionsverfahren für ein Tintenstrahlgerät
Title (fr)
Méthode pour détecter la décharge de l'encre pour appareil d'enregistrement à jet d'encre
Publication
Application
Priority
- EP 93302130 A 19930322
- JP 6484092 A 19920323
- JP 1099593 A 19930126
Abstract (en)
An ink jet recording apparatus in which ink is discharged from a recording head (1). For checking discharge operation of the head (1), the head (1) is positioned by positioning means (2,32,10) opposite to a temperature sensor (16). Change in temperature sensed by the sensor (16) is monitored by a detecting circuit (31). As a means of improving detection sensitivity, the discharge from the head (1) is controlled by control means (21) so that a greater amount of ink is discharged for the checking mode. Either the droplet volume is increased or the number of droplets discharged per unit time is increased. In the case of a vertically aligned head (1), discharge ports in the upper part of the head (1) are selected. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/01 (2006.01); B41J 2/05 (2006.01); B41J 2/125 (2006.01); B41J 2/165 (2006.01); B41J 2/175 (2006.01)
CPC (source: EP)
B41J 2/0451 (2013.01); B41J 2/04553 (2013.01); B41J 2/04563 (2013.01); B41J 2/0458 (2013.01); B41J 2/16579 (2013.01); B41J 2002/14379 (2013.01)
Citation (search report)
- [YA] DE 3925048 A1 19910131 - OLYMPIA AEG [DE]
- [Y] US 4245224 A 19810113 - ISAYAMA TAKURO, et al
- [PY] US 5136305 A 19920804 - IMS DALE R [US]
- [XY] EP 0380056 A2 19900801 - CANON KK [JP]
- [YA] EP 0443832 A1 19910828 - CANON KK [JP]
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0742101 A1 19961113; EP 0742101 B1 20021204; JP 3248969 B2 20020121; JP H05318765 A 19931203
DOCDB simple family (application)
EP 96201971 A 19930322; JP 1099593 A 19930126