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71. 发明专利

JPH04369550A DRIVING METHOD OF PUMP FOR INK JET PRINTER 失效
公开(公告)号：JPH04369550A
公开(公告)日：1992-12-22
申请号：JP14736991
申请日：1991-06-19
申请人： SEIKO EPSON CORP
发明人： TAKAMI TORU , MURATA SADAO , HANAOKA YUKIHIRO , KUNIMATSU JUNJI
IPC分类号： B41J2/175
摘要： PURPOSE:To provide a driving method of a pump for an ink jet printer which can perform purge operation without destroying a meniscus of a nozzle of a head and further can realize stable printing. CONSTITUTION:In an ink jet printer which is equipped with a valve mechanism for preventing a back flow of ink and a pump 202 which exists on the way of an ink channel between an ink jet head 200 and an ink tank 201, sucks ink from the ink tank 201 as a sucking process, and pressurizes the ink as a pressurizing process to send the ink to the ink jet head 200, a driving means which drives the pump so that the printer comes to be of an ordinary printing state and/or a printing stand-by state when the pressurizing process ends, is provided.

72. 发明专利

JP2000343734A LINE THERMAL PRINTER 失效
公开(公告)号：JP2000343734A
公开(公告)日：2000-12-12
申请号：JP15647799
申请日：1999-06-03
申请人： SEIKO EPSON CORP
发明人： YAMADA TAKASHI , TAKAMI TORU
IPC分类号： B41J2/325 , B41J2/32
摘要： PROBLEM TO BE SOLVED: To enable reverse feed by providing an engaging part to either one of a frame and a sub-frame and providing the engaging member engaged with the engaging part when the sub-frame is closed and supported in a movable manner so as to be released from the engagement with the engaging part by an on-off member. SOLUTION: An engaging lever 40 is provided to the side surface 2a of a sub-frame 2. The engaging lever 40 is engaged with an engaging part 1e by its end surface 40e to hold this engaged state by a tensile coil spring 41. By this constitution, if thermal paper is fed reversely, upward force acts on a platen by the force due to the meshing of a platen gear and the inner gear of an intermediate gear and friction force but, since the end surface 40e is engaged with the engaging part 1e, the upward force is suppressed and the platen gear and the inner gear hold meshing. Therefore, the friction force of thermal paper with the platen is held without separating a thermal head 14 and the platen to enable the reverse feed of the thermal paper.

73. 发明专利

JP2000272201A PRINTER 失效
公开(公告)号：JP2000272201A
公开(公告)日：2000-10-03
申请号：JP8257499
申请日：1999-03-25
申请人： SEIKO EPSON CORP
发明人： SATO KIYONARI , TAKAMI TORU
IPC分类号： B41J29/00 , B41J25/312 , B41J25/316 , B41J29/13
摘要： PROBLEM TO BE SOLVED: To provide a printer which can hold an operability on the exterior of a lid body by securing positioning and fixation between the lid body and a printer main body and which can hold a printing quality by securing opposite positioning for a printing mechanical part. SOLUTION: A supporting mechanism part 50 consists of a mount frame 51 fixed to a case cover 3, a support frame 52 supporting a platen roller 12, and a compression coil spring 53 fitted to the mount frame 51 and the support frame 52. The support frame 52 is constituted movably in a predetermined range to the mount frame 51. On the other hand, a main body frame 4 has a positioning projection 61 and a positioning groove 62 for positioning the support frame 52 to a position where the platen roller 12 is opposed to a thermal head 11.

74. 发明专利

JPH10147023A THERMAL PRINTER 失效
公开(公告)号：JPH10147023A
公开(公告)日：1998-06-02
申请号：JP25552397
申请日：1997-09-19
申请人： SEIKO EPSON CORP
发明人： HOSOMI HIROAKI , TAKAMI TORU , ITO KIYOSHI
IPC分类号： B41J11/14 , B41J2/32 , B41J25/312 , B41J25/316
摘要： PROBLEM TO BE SOLVED: To provide a thermal printer of simple construction with the capability to accurately position a platen with respect to a thermal head. SOLUTION: This thermal printer is equipped with a thermal printing head positioned and supported on a body frame 13 and a platen 18 supported on a freely openable cover frame with the body frame 13. A platen bearing 20 is engaged with the groove part 21 of the body frame 13 by a pressing force E brought about by the printing head when the cover frame is closed. In addition, an engagement part 21b with a guide face 21c angled 90 deg. or less in the direction in which the pressing force F acting upon the platen 18 from the printing head works within a plane including the groove part 21, is provided on a part which is opposite to the printing head in the groove part 21 and is positioned on the open side of the cover frame from a reference line N which connects the center axis O of the platen 18 with a supporting shaft for the cover frame when the cover frame is closed.

75. 发明专利

JPH09240083A PRINTER 失效
公开(公告)号：JPH09240083A
公开(公告)日：1997-09-16
申请号：JP4901296
申请日：1996-03-06
申请人： SEIKO EPSON CORP
发明人： HOSOMI HIROAKI , TAKAMI TORU , NOMURA AKIO , NAKAJIMA SATOSHI , MATSUMOTO YOSHIHARU
IPC分类号： B41J11/00 , B41J11/14
摘要： PROBLEM TO BE SOLVED: To obtain a printer good in a loading property of a recording paper and superior in printing quality and a paper feeding property by a constitution wherein when a paper feeding transfer gear is rotated, a transferring load that a paper feeding gear rotates the paper feeding transfer gear acts in a direction of which action generates a moment of closing an opening/closing member. SOLUTION: In a printer mechanism, a force from a paper feeding motor 23 is transferred to a platen gear 19 via a paper feeding transfer gear 22. When the paper feeding motor 23 rotates in a counter-clockwise direction, i.e., a forward direction, the direction of the force transmitted to the platen gear 19 from the paper feeding transfer gear 22 becomes one represented by arrow F in a condition that a pressure angle of the gear is designated by (a). Since a cover frame 10 is rotatable around a pivot 14, a force of the arrow F2 which is a divisional force of the force F acts in a closing direction of the cover frame 10. As a result, even when the cover frame 10 is not completely closed, the cover frame 10 automatically receives a force in a downward direction by virtue of the paper feeding transfer gear 22 after the paper feeding of the printer starts so that the cover frame 10 is surely closed.

76. 发明专利

JPH09234922A COMPACT PRINTER 失效
公开(公告)号：JPH09234922A
公开(公告)日：1997-09-09
申请号：JP4359596
申请日：1996-02-29
申请人： SEIKO EPSON CORP
发明人： MATSUMOTO YOSHIHARU , NAKAJIMA SATOSHI , HOSOMI HIROAKI , TAKAMI TORU , NOMURA AKIO
IPC分类号： B41J15/04 , B41J29/00
摘要： PROBLEM TO BE SOLVED: To prevent folding of an edge or damage on an edge of a paper in a compact printer comprising a roll paper holder portion by providing a paper guide for limiting a recording paper in the width direction to the vicinity of the printing portion and an engaging portion engageable with the paper guide so as to limit the displacement of the paper guide in the paper width direction. SOLUTION: A paper guide 17 made of plastic integrally with a printing portion is disposed inside a box-like main body frame 13 so as to guide the side face of a paper by the side face guide of the paper guide 17 in the same plane to the printing portion. At the time of installing the paper guide 17 in the main body frame 13, collars 17-2 having a long hole 17-3 are formed at the right and left ends of the upper part of the paper guide 17. Projections 13-1 are provided in the upper part of the main body frame 13. The displacement of the paper guide 17 in the paper width direction is limited by engaging the long holes 17-3 of the paper guide 17 with the projections 13-1 of the main body frame when the paper guide 17 is installed in the main body frame 13.

77. 发明专利

JPH09141595A CUTTER AND PRINTER USING THIS CUTTER 失效
公开(公告)号：JPH09141595A
公开(公告)日：1997-06-03
申请号：JP30314495
申请日：1995-11-21
申请人： SEIKO EPSON CORP
发明人： HOSOMI HIROAKI , TAKAMI TORU , NOMURA AKIO , NAKAJIMA SATOSHI
IPC分类号： B41J11/70 , B26D1/30 , B26D5/02
摘要： PROBLEM TO BE SOLVED: To provide a printer provided with a cutting means excellent in recording sheet cutting quality and straightness of a cur end. SOLUTION: A cutter is provided with a pair of separable fixed cutting edge 14 and movable cutting edge 9 disposed with the cutting edge parts opposed to each other so as to hold a paper discharge opening 15 through which recording sheets are discharged, in between, and a movable cutting edge driving means 10 for sliding the movable cutting edge 9 in scissors-like cross in the state of being in point contact with the fixed cutting edge 14. The fixed cutting edge 14 is provided on a colorable cover frame 8 and supported with slight play on a fixed cutting edge supporting part 16. The movable cutting edge 9 is accommodated in a cutter unit frame 11. The movable cutting edge 9 is driven by the transmission of toque of a driving motor 21 through a worm gear 22, a worm wheel 23, a crank pin 24 and an oblong hole 20 provided in the movable cutting edge 9.

78. 发明专利

JPH068457A CAPPING MECHANISM FOR INK JET PRINTER 失效
公开(公告)号：JPH068457A
公开(公告)日：1994-01-18
申请号：JP16932292
申请日：1992-06-26
申请人： SEIKO EPSON CORP
发明人： TAKAMI TORU , MURATA SADAO , KUNIMATSU JUNJI
IPC分类号： B41J2/165
摘要： PURPOSE:To provide a highly reliable capping mechanism wherein a cap rubber sticks certainly fast to an ink jet head by a method wherein the number of component is reduced by disusing a cap holder. CONSTITUTION:A capping mechanism of an ink jet printer is so featured as to be composed of at least a cap rubber 1 having a close adhesion part 2 sticking fast to an ink jet head 16, a pedestal part 3 having rigidity to the extent of no-deforming with a load in close adhesion, and a fitting part 4 having rigidity to the extent of deforming with the load in close adhesion, and a cap lever 5 having a frame 6 engaged with the pedestal part via a gap and a projection 7 abutting against the pedestal part 3.

79. 发明专利

JPH04369551A DRIVING METHOD OF PUMP FOR INK JET PRINTER 失效
公开(公告)号：JPH04369551A
公开(公告)日：1992-12-22
申请号：JP14737091
申请日：1991-06-19
申请人： SEIKO EPSON CORP
发明人： TAKAMI TORU , HANAOKA YUKIHIRO , MURATA SADAO
IPC分类号： B41J2/175 , B41J2/18 , B41J2/185
摘要： PURPOSE:To provide a driving method of a pump for an ink jet printer which can purge operation without destroying a meniscus of a nozzle of a head and further can realize stable printing. CONSTITUTION:In an ink jet printer which is equipped with a valve mechanism for preventing a back flow of ink and a pump 207 which exists on the way of an ink channel between an ink jet head 200 and a waste liquid case 208, sucks ink from the ink jet head 200 as a sucking process and further sends the ink to the waste liquid case 208 by pressurizing the ink as a pressurizing process, a driving means which drives the pump so that the printer comes to be of an ordinary printing state and/or a printing stand-by state when a sucking process ends, is provided.

80. 发明专利

JPH04187444A CAP DEVICE FOR INK JET PRINTER 失效
公开(公告)号：JPH04187444A
公开(公告)日：1992-07-06
申请号：JP31753990
申请日：1990-11-21
申请人： SEIKO EPSON CORP
发明人： HANAOKA YUKIHIRO , TAKAMI TORU
IPC分类号： B41J2/165
摘要： PURPOSE:To obtain a printer having narrow breadth without specific power for closing a cap by providing a cap roller having an axis of rotation parallel with a nozzle of an ink jet head consisting of elastic member and shutting off the nozzle of the ink jet head by the cap roller. CONSTITUTION:When a printing is completed and a capping operation is necessary, a carriage drive motor 10 is driven and a carriage 5 is stopped just before an ink jet head 4 contacts with a cap roller 1. Next, a nozzle 4-a of the ink jet head 4 drives the carriage drive motor 10 until an axis of rotation 3 of the cap roller l coincides with a position in the direction of printing column and stops it. As the cap roller 1 is made of rubber, an overlap with the nozzle 4-a is absorbed by the elasticity. Thus, for closing the cap, a shutting off of the nozzle can be done by only stopping the carriage at the position where the cap roller arranged at a fixed frame coincides with the nozzle of the ink jet head.

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