EP 0870622 A1 19981014 - Ink jet printer with improved printhead cooling system
Title (en)
Ink jet printer with improved printhead cooling system
Title (de)
Tintenstrahldrucker mit einem verbesserten Kühlsystem
Title (fr)
Imprimante à jet d'encre ayant un système de refroidissement amélioré
Publication
Application
Priority
US 83356297 A 19970407
Abstract (en)
Printhead temperatures are maintained at an optimum temperature by mounting the printheads (52A,54A,56A,58A)in thermal contact with a support bar (46,48,50) through which an interior channel (46A,48A,50A) has been formed. A cooling medium such as water is circulated through the channel (46A,48A,50A), the circulating medium absorbing heat generated by the printhead during operation. In one partial width array embodiment, support bars (46,48,50) are mounted at each end to hollow frame members (42,44). Channels (46A,48A,50A) are formed through the length of the bars (46,48,50) which connect into the interior of the frame members (42,44). Water introduced via a pump/circulation mechanism (62,64) enters the entrance port of one frame member (42), circulates through the bar channel (46A,48A,50A), and exits the other frame member (44) through an exit port. Recirculation is achieved using a feedback loop between a water reservoir (64) and a pump (62). In another embodiment, a plurality of printhead modules (72A) are butted together on a single cooling support bar (73) having a channel therethrough through which water is circulated. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/01 (2006.01); B41J 2/205 (2006.01); B41J 29/377 (2006.01)
CPC (source: EP)
B41J 29/377 (2013.01); B41J 2202/08 (2013.01); B41J 2202/21 (2013.01)
Citation (search report)
- [X] JP H08207272 A 19960813 - XEROX CORP & US 5631676 A 19970520 - KARZ ROBERT S [US]
- [X] EP 0736390 A2 19961009 - CANON KK [JP]
- [X] EP 0450641 A2 19911009 - CANON KK [JP]
- [A] US 5192958 A 19930309 - CHARNITSKI GEORGE A [US]
- [X] PATENT ABSTRACTS OF JAPAN vol. 097, no. 002 28 February 1997 (1997-02-28)
- [X] PATENT ABSTRACTS OF JAPAN vol. 015, no. 339 (M - 1152) 28 August 1991 (1991-08-28)
- [A] PATENT ABSTRACTS OF JAPAN vol. 017, no. 623 (M - 1511) 17 November 1993 (1993-11-17)
- [A] PATENT ABSTRACTS OF JAPAN vol. 015, no. 443 (M - 1178) 12 November 1991 (1991-11-12)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 98300470 A 19980123; JP 8195198 A 19980327