公开(公告)号：JP2001341312A

公开(公告)日：2001-12-11

申请号：JP2001096063

申请日：2001-03-29

Applicant: CANON KK

Inventor： TAJIMA HIRONORI ,  YAMAGUCHI YUKUO ,  UMEYAMA MIKIYA ,  HATASA NOBUYUKI ,  KOIZUMI HIROSHI

IPC: B41J2/05 ,  B41J2/16

Abstract: PROBLEM TO BE SOLVED: To fill a liquid jet recording head with a desired quantity of filler without clogging the open end of a nozzle or leaking liquid between the end face of the nozzle and an orifice plate. SOLUTION: In the front face 11h of a chip tank 11, an opening 11g for exposing a nozzle end face 3 formed by bonding an element substrate 1 and a grooved top plate 5 is made along with a seal groove 11b surrounding the opening 11g and having such dimensions as can feed a filler by capillarity. In the upper surface 11f of the chip tank 11, first and second slits 11e, 11e are made to communicate with the seal groove 11b. End parts of the first and second slits 11e, 11e, i.e., ejecting parts 21, are formed at such positions as not covered with a fixing margin 6c when an orifice plate 6 is fixed to the body section 20.

公开(公告)号：JP2001171124A

公开(公告)日：2001-06-26

申请号：JP36369499

申请日：1999-12-22

Applicant: CANON KK

Inventor： TAJIMA HIRONORI ,  ABE TSUTOMU ,  KOIZUMI HIROSHI ,  AONO KIYOMI ,  KOMATA KOICHI ,  OKAZAKI TAKESHI

IPC: B41J2/05 ,  B41J2/16

Abstract: PROBLEM TO BE SOLVED: To provide a liquid-jet recording head and a manufacturing method whereby the generation of satellite liquid drops is suppressed and a printing quality is improved. SOLUTION: A resin molding 10A of a top plate constituting the liquid-jet recording head is uniformly and accurately formed by cutting a liquid channel groove form face 13 and a reference butt face 14 by a cutter 1, cutting a discharge opening surface 15 of an orifice plate 12 by a cutter 2 and removing a deflection of the orifice plate 12 resulting from resin molding. At this time of cutting, the discharge opening surface 15 is formed by an inclined cutting face of the cutter 2 to be inclined by an angle α equal to an angle of incidence αof a laser light L for processing a discharge opening 17 later. The discharge opening surface 15 is formed perpendicularly to a liquid discharge axis direction of the discharge opening 17. Since an angular difference is not generated to an edge of the discharge opening, main drops of liquid drops discharged from the discharge opening and satellite drops are let to fly in the same direction, thereby improving the printing quality.

公开(公告)号：JPH11342628A

公开(公告)日：1999-12-14

申请号：JP14196099

申请日：1999-05-21

Applicant: CANON KK

Inventor： TAJIMA HIRONORI ,  KASHINO TOSHIO ,  OKAZAKI TAKESHI

IPC: B41J2/175

Abstract: PROBLEM TO BE SOLVED: To keep a state where ink is not present in the vicinity of an opening communicating with the atmosphere easily even if ink is collected in the vicinity of an ink supply opening of the negative pressure generating member containing section of an ink tank by disposing both openings on the opposite faces and locating the opening communicating with the atmosphere at a higher position. SOLUTION: When an ink jet recorder is loaded with an ink jet cartridge, an ink supply opening 209 is located on the underside. An opening 208 communicating with the atmosphere and the ink supply opening 209 are disposed oppositely to the upper and lower faces, respectively, in a negative pressure generating member containing section and a negative pressure generating member, i.e., an ink absorber 205, is interposed between. Ink is supplied from an ink containing section 204 to the negative pressure generating member containing section 203 depending on pressure variation incident to consumption of ink on the head unit side. Since ink is normally present in the negative pressure generating member containing chamber, the ink containing section 204 is sealed hermetically and the inner pressure decreases as the ink is supplied.

公开(公告)号：JPH11192711A

公开(公告)日：1999-07-21

申请号：JP36889497

申请日：1997-12-29

Applicant: CANON KK

Inventor： KOMATA KOICHI ,  ABE TSUTOMU ,  KARITA SEIICHIRO ,  KOIZUMI HIROSHI ,  TAJIMA HIRONORI ,  AONO KIYOMI

IPC: B41J2/05 ,  B41J2/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing an ink jet recording head capable of inexpensively producing a full line type long top plate reduced in warpage in a good yield without being affected by the deviation of a molding material or a molding condition, and the ink jet recording head. SOLUTION: A method for producing an ink jet recording head has a process for forming an element substrate provided with a plurality of emission energy generating elements for emitting a liquid, a process providing a support having the element substrate arranged on the side of one surface thereof and a process producing a grooved member provided with a plurality of grooves for footing flow paths provided corresponding to the respective emission energy generation elements of the element substrate by an injection insert molding method and a gate cutting position is adjusted after the insert molding method is executed to correct the warpage of the grooved member after gate cutting.

公开(公告)号：JPH10258510A

公开(公告)日：1998-09-29

申请号：JP8764297

申请日：1997-03-21

Applicant: CANON KK

Inventor： KOIZUMI HIROSHI ,  OKAZAKI TAKESHI ,  AONO KIYOMI ,  KOMATA KOICHI ,  TAJIMA HIRONORI ,  KARITA SEIICHIRO ,  ABE TSUTOMU

IPC: B41J2/01 ,  B41J2/05

Abstract: PROBLEM TO BE SOLVED: To complement a failed part of recording by a main recording head and to improve the ratio of conforming items by using one of a plurality of recording heads with the same width as a main recording head and another one as a sub-recording head and making them exchangable. SOLUTION: A main recording head A and a sub-recording head B have respectively a base plate 1 and a heater board 2 is bonded on the top face and a plurality of jetting energy generating elements are arranged. In addition, the main recording head A and the sub-recording head B are fixed in such a way that their base plates 1 are joined together by fixing means 19a and 19b so as to coincide the positions of mutual outlet positions with each other. By using two heads combined like this, some nozzles driven at certain orders of the whole width do not record on the main recording head A side but instead of these, the sub-recording head B performs recording by the number of imperfect nozzles of the main recording head A. It is possible thereby to use heads which have been thrown away before as failed parts as good articles.

公开(公告)号：JPH10181043A

公开(公告)日：1998-07-07

申请号：JP35694896

申请日：1996-12-26

Applicant: CANON KK

Inventor： ABE TSUTOMU ,  KOIZUMI HIROSHI ,  KOMATA KOICHI ,  AONO KIYOMI ,  KARITA SEIICHIRO ,  OKAZAKI TAKESHI ,  KUBOTA MASAHIKO ,  TAJIMA HIRONORI

IPC: B41J2/18 ,  B41J2/13 ,  B41J2/175 ,  B41J2/185

Abstract: PROBLEM TO BE SOLVED: To reduce a running cost by a simple structure and to obtain a recorder which does not require an unnecessary space and has a high reliability. SOLUTION: This liquid ejection recorder comprises an exchangeable ink tank 7 for supplying ink, a loading sensor 9 for detecting whether or not the ink tank 7 is loaded, a sub-tank 3 that reserves the ink from the ink tank 7, an ink level sensor 6 which is built in the sub-tank 3 and detects whether or not the quantity of the ink is below a predetermined level, an ink supplying system that supplies the ink to a recording head 1 from the sub-tank 3, a cap 2 that receives the ink which is not used in the recording and is discharged from the recording head 1 by a preliminary ejection or a recovery operation of the recording head 1 and a collecting mechanism that collects the ink which is not used in the recording and is reserved in the cap 2.

公开(公告)号：JPH10151764A

公开(公告)日：1998-06-09

申请号：JP31218896

申请日：1996-11-22

Applicant: CANON KK

Inventor： OKAZAKI TAKESHI ,  KOIZUMI HIROSHI ,  ABE TSUTOMU ,  KARITA SEIICHIRO ,  KOMATA KOICHI ,  AONO KIYOMI ,  TAJIMA HIRONORI

IPC: B41J2/175 ,  B41J2/05

Abstract: PROBLEM TO BE SOLVED: To provide a high multi-nozzle ink jet head excellent in response and jetting performance. SOLUTION: The ink jet head comprises a plurality of liquid channels 102 having an ink jet pressure generation means communicating with ink jet ports 101, a common liquid chamber for supplying ink to each liquid channel 102, ports 9A, 9B for supplying ink into the common liquid chamber, and a filter member 7 for partitioning the common liquid chamber into the liquid channel 102 side and the supply ports 9A, 9B side and removing impurities from the ink being supplied to the liquid channel 102 side. The filter member 7 is arranged in the common liquid chamber under a state where movement to the liquid channel 102 side is regulated only by a regulation means 111 and a fibrous resin 7A is arranged in the common liquid chamber between the filter member 7 and the supply ports 9A, 9B side.

公开(公告)号：JPH10138480A

公开(公告)日：1998-05-26

申请号：JP29521196

申请日：1996-11-07

Applicant: CANON KK

Inventor： KARITA SEIICHIRO ,  KOIZUMI HIROSHI ,  ABE TSUTOMU ,  KUBOTA MASAHIKO ,  OKAZAKI TAKESHI ,  KOMATA KOICHI ,  AONO KIYOMI ,  TAJIMA HIRONORI

IPC: B41J2/05 ,  B41J2/16

Abstract: PROBLEM TO BE SOLVED: To enhance a yield in processing accuracy of a heater board by a constitution wherein each of substrates is formed within a region which is formed of lines obtained such that width dimensions of an ejection energy generating element and the opposite side of each substrate are determined and each of lines is drawn from both ends of rear section of a nozzle forming section to respective both ends of the width dimensions. SOLUTION: In terms of a heater board 100 on which electro-thermal conversion elements are formed in an ink jet recording head, when the board 100 is inclined by a dimension (y) with respect to a gap (x), a shift (z) is generated at the rear side. Therefore, in order to prevent generation of interference between adjacent heater boards 100 at the rear section, it is needed to satisfy 2.z assuming that both of them are inclined. It is preferable to make a front step dimension (y) to be 10μm or less. Assuming that a dimension of rear width is (W), a front width dimension (w) and a length in a direction perpendicular to the width dimension (w) of the heater board 100 are set such that a relationship of W

公开(公告)号：JPH10119279A

公开(公告)日：1998-05-12

申请号：JP27814896

申请日：1996-10-21

Applicant: CANON KK

Inventor： TAJIMA HIRONORI ,  AONO KIYOMI ,  KARITA SEIICHIRO ,  KOMATA KOICHI ,  ABE TSUTOMU ,  KOIZUMI HIROSHI

IPC: B41J2/175 ,  B41J2/05 ,  B41J2/16

Abstract: PROBLEM TO BE SOLVED: To provide an ink jet head of which member having grooves is hardly contracted and bent even when the number of ejection nozzles is large. SOLUTION: There is disclosed an ink jet head which is equipped with a substrate having ejection energy generating sections, grooves respectively corresponding to the ejection energy generating sections and a member 14 having grooves and ejection nozzles each communicated to one end of the respective groove. Liquid passages each of which is communicated to the respective ejection nozzle is formed such that the substrate and the member 14 having the grooves are bonded with each other and liquid drops are ejected from the ejection nozzles via the liquid passages. The member 14 having the groove comprises a resin section forming the grooves and ejection nozzles and a heat deformation suppressing member 30 which is integrally formed with the resin section, extended in the arrangement direction of the ejection nozzles and has a thermal expansion coefficient that is smaller than that of the resin section. The heat deformation suppressing member 30 comprises a passage 31 for supplying a liquid to a common liquid chamber and a stopper section 34 for being stopped to the resin section.

公开(公告)号：JPH106065A

公开(公告)日：1998-01-13

申请号：JP16465296

申请日：1996-06-25

Applicant: CANON KK

Inventor： KARITA SEIICHIRO ,  ABE TSUTOMU ,  KOMATA KOICHI ,  AONO KIYOMI ,  TAJIMA HIRONORI ,  KOIZUMI HIROSHI

IPC: B41J2/05 ,  B23K26/066 ,  B41J2/14 ,  B41J2/145 ,  B41J2/155 ,  B41J2/16 ,  B23K26/06

Abstract: PROBLEM TO BE SOLVED: To reduce the dispersion of the distance between an orifice palate back surface and a groove end and to make uniform the ink discharging amount from respective nozzles by adding a mask for regulating the groove orifice side end part to the patterning mask part of the ink passage groove in a recording head. SOLUTION: The mask 25 for regulating the passage groove end part provided with a first movable mechanism 22 capable of slightly moving is arranged in the laser beam 2 side of an ink passage forming mask 27 fixed to an upper plate member 23 of a second movable mechanism 21 provided a mask part 10 on the frame of a machining device. Respective masks are mutually arranged in parallel within a laser beam flux, further a distance L is provided between both masks in an optical axis direction. In this constitution, at least a part of the laser beam 2 is reflected or absorbed with the regulating mask 25 in order to precisely form the groove end under machining. Moreover, the mask 27 and the regulating mask 25 are preferably movable for regulating the position in three or more axial directions to the laser beam 2 and the mask 27, respectively.