公开(公告)号：DE602005006913D1

公开(公告)日：2008-07-03

申请号：DE602005006913

申请日：2005-08-12

Applicant: CANON KK

Inventor： SHIBATA KAZUAKI ,  YOKOYAMA SAKAI ,  ONO KENJI ,  OZAKI TERUO ,  IBE SATOSHI ,  SAITO ICHIRO ,  SAKAI TOSHIYASU

IPC: B41J2/14 ,  B41J2/16

Abstract: An ink jet head circuit board is provided which has heaters to generate thermal energy for ink ejection. This board has the heaters formed with high precision to reduce their areas. It has provisions to protect the electrode wires against corrosion and prevent a progress of corrosion. The substrate is deposited with the thin first electrodes (101) made of a corrosion resistant metal. Over the first electrodes the second electrodes (103) made of aluminum are formed. The second electrodes are deposited with a resistor layer (107). The heater is formed in the gap between the first electrodes. With this construction, the heaters are formed without large dimensional variations among them. Should a defect occur in a protective layer above or near the heaters, a progress of corrosion can effectively be prevented because the material of the resistor layer is more resistant to encroachment than aluminum and the first electrodes are corrosion resistant.

公开(公告)号：DE602005013864D1

公开(公告)日：2009-05-28

申请号：DE602005013864

申请日：2005-08-12

Applicant: CANON KK

Inventor： SAKAI TOSHIYASU ,  OZAKI TERUO ,  ONO KENJI ,  SAITO ICHIRO ,  YOKOYAMA SAKAI ,  IBE SATOSHI ,  SHIBATA KAZUAKI

IPC: B41J2/14 ,  B41J2/16

Abstract: An ink jet head circuit board is provided which has heaters to generate thermal energy for ink ejection as they are energized. This circuit board reduces areas of the heaters to achieve higher printing resolution and image quality. This board also prevents a degradation of thermal energy efficiency and reduces power consumption. The protective insulation layer for the electrode wire layer (103) is formed of two layers (108a,108b) and one of the two layers, (108a), is removed from above the heater (102) to improve the heat energy efficiency. The resistor layer (107) is deposited over the electrode wire layer (103). The patterning for removing the protective insulation layer (108a) is done in a wider range than a gap of the electrode wire layer (103), the gap being used to form the heater. Further, by forming the electrode wires in two layers, a possible reduction in an effective bubble generation area of the heater (102) can be prevented.

公开(公告)号：DE602004020043D1

公开(公告)日：2009-04-30

申请号：DE602004020043

申请日：2004-12-14

Applicant: CANON KK

Inventor： IBE SATOSHI ,  OZAKI TERUO ,  IMANAKA YOSHIYUKI ,  HATSUI TAKUYA ,  ONO KENJI ,  SAITO ICHIRO ,  YOKOYAMA SAKAI ,  SAKAI TOSHIYASU ,  SHIBATA KAZUAKI

IPC: B41J2/16 ,  B41J2/05 ,  H05K3/24

公开(公告)号：DE602005010344D1

公开(公告)日：2008-11-27

申请号：DE602005010344

申请日：2005-08-12

Applicant: CANON KK

Inventor： ONO KENJI ,  OZAKI TERUO ,  SAKAI TOSHIYASU ,  SAITO ICHIRO ,  IBE SATOSHI ,  YOKOYAMA SAKAI ,  SHIBATA KAZUAKI

IPC: B41J2/14 ,  B41J2/16

公开(公告)号：DE602005006678D1

公开(公告)日：2008-06-26

申请号：DE602005006678

申请日：2005-08-12

Applicant: CANON KK

Inventor： SHIBATA KAZUAKI ,  ONO KENJI ,  OZAKI TERUO ,  IBE SATOSHI ,  SAITO ICHIRO ,  YOKOYAMA SAKAI ,  SAKAI TOSHIYASU

IPC: B41J2/14 ,  B41J2/16

Abstract: An ink jet head circuit board is provided which has heaters to generate thermal energy for ink ejection as they are energized. This circuit board has the heaters formed with high precision to reduce their areas. It also has provisions to protect the electrode wires against corrosion and prevent a progress of corrosion. The substrate is deposited with the thin first electrodes (101) made of a corrosion resistant metal. This is further deposited with the resistor layer (107). The second electrodes (103) made of aluminum are deposited to overlap the first electrodes to form the heater without causing large dimensional variations among the heaters. With this construction, if a defect should occur in a protective layer on or near the heater, a progress of corrosion can effectively be prevented because the material of the resistor layer is more resistant to encroachment than aluminum and the first electrodes are corrosion resistant.