-
公开(公告)号：JP2000052569A
公开(公告)日：2000-02-22
申请号：JP22643298
申请日：1998-08-11
Applicant: CASIO COMPUTER CO LTD
Inventor： KABASAWA YASUNARI , SATO YASUTO , NAKAGOME KOICHI
Abstract: PROBLEM TO BE SOLVED: To provide an ink jet printer having a small print head performing scanning operation independently without being coupled with an ink supply tube and extremely advantageous for reducing the size of an apparatus. SOLUTION: A print head unit 2 has four slit-like liquid receiving/supplying openings 16 in the upper surface thereof and connected with the control section in the apparatus body through a flexible signal cable 7. It is engaged with the linear rail 8 of a head drive mechanism 3 and reciprocated in the main scanning direction shown y an arrow A by means of a coil 13 at the time of printing. An ink tank unit 6 having an inner chamber 34 for containing ink liquids of yellow, magenta, cyan and black and is arranged fixedly on the frame of the apparatus body and a liquid supply opening having a micropump is provided in the lower surface at a position other than the print area. When ink in the print head unit 2 runs out, the print head unit 2 stops at a position facing the liquid supply opening and a unit 5 for opening/closing the supply opening moves to open the liquid supply opening thus supplying ink to the liquid receiving/supplying openings 16 through the micropump.
-
公开(公告)号：JPH04201462A
公开(公告)日：1992-07-22
申请号：JP33453690
申请日：1990-11-30
Applicant: CASIO COMPUTER CO LTD
Inventor： SATO YASUTO , TAKEUCHI EIICHI , SHIMIZU SHIGERU , YAMAMOTO TADAO , INOUE HIDEAKI , NAKAYAMA KENJI , TAKAHASHI HIDEKI , HONDA TOSHIRO , ASAKO KENICHIRO
Abstract: PURPOSE:To make it possible to arrange wirings for connecting recording electrodes and record signal generating means with a density lower than a density of a parallel arrangement of the recording electrodes by arranging in parallel and in string form a plurality of recording electrodes on a narrow end part on a substrate whose widths at both end parts vary consisting of a flexible insulating material, and combining a plurality of flexible circuit boards on which the record signal generating means is mounted in a manner connectable with these recording electrodes electrically on a wide end part. CONSTITUTION:A recording electrode sheet 17 is constituted by combining two split electrode sheets 17A and 17B. The split electrode sheets 17A and 17B are respectively constituted of flexible printed circuit boards whose both end parts are different in width. On narrow end parts of the split electrode sheets 17A and 17B, a number of recording electrodes 17a are arranged in parallel at a fine pitch corresponding to an image density to be obtained so as to form split electrode strings ERp respectively. Here, the recording electrode 17a consisting of a number of man-magnetic conductive materials a is patterned with etching processing in parallel on a flexible insulating film 17b, for example, at a pitch of 84.6mum by keeping an interval of 40mum.
-
公开(公告)号：JPH04190370A
公开(公告)日：1992-07-08
申请号：JP32166590
申请日：1990-11-26
Applicant: CASIO COMPUTER CO LTD
Inventor： NAKAYAMA KENJI , TAKEUCHI EIICHI , SHIMIZU SHIGERU , YAMAMOTO TADAO , INOUE HIDEAKI , SATO YASUTO , TAKAHASHI HIDEKI , HONDA TOSHIRO , ASAKO KENICHIRO
Abstract: PURPOSE:To stably form a satisfactory image having a high degree of resolution and a high density by forming the entire peripheral surface of a recording electrode which extends at a recording position nearest to an opposed electrode, from a magnetic material. CONSTITUTION:A recording electrode EL is a double structure in which a recording electrode wire 17a made of nonmagnetic materials has an exposed peripheral surface that is coated thereover with a magnetic layer 17d made of magnetic conductive materials. In this arrangement in which the entire exposed peripheral surface of the recording electrode EL is coated with the magnetic layer 17d, substantially wall magnetic force lines generated at the outer surface of a developing sleeve 15 are converged to the recording electrode EL and are regulated so as to extend toward a cylindrical electrode 5. As a result, magnetic toner (d) forms chains along the converged magnetic force lines, and are bundled onto the recording electrode EL, that is, the toner chains which extends toward the cylindrical electrode 5 in order are formed. Thereby it is possible to stably form a recorded clear toner image having a high degree of resolution and a high density.
-
公开(公告)号：JPH04156351A
公开(公告)日：1992-05-28
申请号：JP28093390
申请日：1990-10-19
Applicant: CASIO COMPUTER CO LTD
Inventor： TAKEUCHI EIICHI , SHIMIZU SHIGERU , YAMAMOTO TADAO , INOUE HIDEAKI , SATO YASUTO , NAKAYAMA KENJI , TAKAHASHI HIDEKI , ASAKO KENICHIRO , HONDA TOSHIRO
Abstract: PURPOSE:To provide the title apparatus capable of using plain paper, accelerated in miniaturization and stably forming a sharp recording image having high resolution and generating no background staining over a long period of time by parallelly arranging a plurality of recording electrodes to a vertical transfer route and arranging opposed electrodes so as to hold a minute gap and applying AC bias voltage to the opposed electrodes. CONSTITUTION:A transfer charger 4 is arranged to the image transfer part T on the downstream side of a stand-by roll pair 3 in opposed relation to a cylindrical electrode 5 also used as an image carrying body. An AC bias power supply 5a capable of outputting AC bias voltage obtained by superposing AC voltage on DC voltage of negative polarity is connected to the cylindrical electrode 5 The position W where the peripheral surface of a developing sleeve 15 most approaches the peripheral surface of the cylindrical electrode 5 so as to hold a minute gap on the downstream side of a doctor blade 12a becomes a recording position and the magnetic toner (d) transferred to the position is selectively transferred to the peripheral surface of the cylindrical electrode 5 corresponding to recording data to form a toner recording image. The minute gap at the recording position W is desirably set to 100mum or less.
-
公开(公告)号：JPH0451055A
公开(公告)日：1992-02-19
申请号：JP15934990
申请日：1990-06-18
Applicant: CASIO COMPUTER CO LTD
Inventor： INOUE HIDEAKI , TAKEUCHI EIICHI , SHIMIZU SHIGERU , YAMAMOTO TADAO , SATO YASUTO , NAKAYAMA KENJI , TAKAHASHI HIDEKI , HONDA TOSHIRO , ASAKO KENICHIRO
Abstract: PURPOSE:To stably form a bright recorded image of a high resolution by impressing cleaning voltage forcedly tranferring developer on a recording electrode to a cylindrical electrode to an electrodes facing part during non recording time. CONSTITUTION:This recorder is provided with a developer carrier member 14, a devel oper carrying means Uw carrying developer (d) along the surface of the former, the multiple number of recording electrodes 20a installed side by side retaining electrical insulation with each other on the surface of the developer carrier member 14 at the specified intervals, the cylindrical electrode 5 installed facing the former at a specified interval, and a recording electrode driving means 21 impressing recording voltage responding to the recording information on each recording electrode 20a. Furthermore, a bias power source 5a impressing bias voltage to the cylindrical electrode 5, and a voltage control means C controlling recording voltage and the bias voltage are provided and the cleaning voltage forcedly transferring the developer (d) on the record ing electrode 20a side to the cylindrical electrode 5 at the non recording time is im pressed on the recording electrode 20a by the voltage control means C. Thus, normal paper can be utilized and a bright image of the high resolution can also be obtained.
-
Patent Agency Ranking
公开(公告)号：JPH0443370A
公开(公告)日：1992-02-13
申请号：JP15233090
申请日：1990-06-11
Applicant: CASIO COMPUTER CO LTD
Inventor： INOUE HIDEAKI , TAKEUCHI EIICHI , SHIMIZU SHIGERU , YAMAMOTO TADAO , SATO YASUTO , NAKAYAMA KENJI , TAKAHASHI HIDEKI , HONDA TOSHIRO , ASAKO KENICHIRO
Abstract: PURPOSE:To prevent a recording head from being abraded and to stably form and excellent recorded image whose end is prevented from being contaminated by developer and which has high resolution by setting the width of a dummy electrode so that the width of an electrode juxtaposing area where a recording electrode and the dummy electrode are formed together may be larger than the width of a developer carrying path. CONSTITUTION:The dummy electrode 20c for holding magnetic toner so that it may not be transferred to a cylindrical electrode side is formed at the edge of a recording electrode sheet 20, and the dummy electrode having the same constitution is formed at the other edge of the sheet 20. In such a case, the width DW of the dummy electrode 20c is larger than the width EW of each recording electrode wire 20a and set to satisfy the relation of Ze
-
公开(公告)号：JPH049083A
公开(公告)日：1992-01-13
申请号：JP11092790
申请日：1990-04-26
Applicant: CASIO COMPUTER CO LTD
Inventor： TAKEUCHI EIICHI , SHIMIZU SHIGERU , YAMAMOTO TADAO , INOUE HIDEAKI , SATO YASUTO , NAKAYAMA KENJI , TAKAHASHI HIDEKI , HONDA TOSHIRO , ASAKO KENICHIRO
IPC: G03G15/09
Abstract: PURPOSE:To eliminate the need for a mechanically rotary mechanism by forming a progressive wave magnetic field progressing along the outer periphery of a sleeve by means of the specific energization to a coil part, and carrying a magnetic powders. CONSTITUTION:A coil roll R is inserted and fixed inside the sleeve 2. In the coil roll R, plural recessed part grooves 3a are extended/formed in parallel along a shaft direction at a constant interval on the periphery of a base roller 3 formed with a magnetic material and a conductor 4a is buried into the recessed part 3a and laid to form a coil part 4. Then, the coil part 4 is divided into (m) groups, the coil parts 4 of respective groups are disposed on every other (m-1)pieces, and an alternating current whose magnetic pole direction is sequentially reversed is energized. The alternating current having the deviation of a phase at every pi/m is sequentially applied to adjacent (m) coil parts 4 which belong to different groups in the order of arrangement. The progressive wave magnetic field progressing along the outer periphery of the sleeve 2 is formed, and the magnetic powders (dt) are carried. Thus, the magnetic powders (dt) can be carried without using a rotary mechanism.
-
公开(公告)号：JPH02155758A
公开(公告)日：1990-06-14
申请号：JP31135188
申请日：1988-12-09
Applicant: CASIO COMPUTER CO LTD , CASIO ELECTRONICS MFG CO
Inventor： SATO YASUTO , TAKEUCHI EIICHI , SHIMIZU SHIGERU , TAKAHASHI HIDEKI , ASAKO KENICHIRO , HONDA TOSHIRO
Abstract: PURPOSE:To stably record a satisfactory image directly on paper by feeding a sole common electrode and a plurality of spiral signal electrodes inputting a print signal in parallel in a cross-opposed manner, feeding a toner conveyor to an electrode opposing part, and passing a recording material between the toner conveyor and the spiral signal electrode. CONSTITUTION:A bias power source 5d having the same polarity as that of toner storing charge is connected to a fixed electrode 5a, and auxiliary electrodes 5c, 5c are connected together to the + side terminal of a linear electrode application high voltage power source 4f. Accordingly, switches 4en are controlled to be opened or closed in response to a print signal to form an electric field in the opposing part (intersection point) between linear electrodes 4bn and the fixed electrode 5a, toner charged in - polarity on the surface of the toner conveyor 6 is transferred along the lines of electric force on paper P to be conveyed in a direction of an arrow (b) to print one dot. In this case, since a bias voltage having the same polarity as toner charging polarity is applied to the fixed electrode 5a, a strong electric field force is obtained, and the toner can be transferred rapidly and strongly on the paper P.
-
公开(公告)号：JPH02141265A
公开(公告)日：1990-05-30
申请号：JP29684288
申请日：1988-11-24
Applicant: CASIO COMPUTER CO LTD , CASIO ELECTRONICS MFG CO
Inventor： SATO YASUTO , SHIMIZU SHIGERU , ASAKO KENICHIRO , TAKAHASHI HIDEKI , HONDA TOSHIRO , TAKEUCHI EIICHI
Abstract: PURPOSE:To stably form a sharp and good image on plain paper by simple structure by opposing a plurality of spiral signal electrodes to which a printing signal is inputted to a single common electrode in parallel so as to cross said common electrode and passing a toner carrier through this electrode opposed part while feeding recording paper between the toner carrier and the spiral signal electrodes. CONSTITUTION:Five switches 4e1 - 4e5 are controlled so as to be opened and closed corresponding to a printing signal and output voltage of negative polarity is selectively applied to each of linear electrodes 4bn by a high voltage power supply 4f. By this method, an electric field is formed to the opposed part of each of the linear electrodes 4bn and a fixed electrode 5a. The negatively charged toner on the surface of a toner carrier 6 is transferred to the paper fed in the direction shown by an arrow (x) along the line of electric force of said electric field to print one dot. In this case, since auxiliary electrodes 5c, 5c are parallelly provided on both sides of the fixed electrode 5a and the same high voltage as each linear electrode 4b is applied to the respective electrodes 5c, 5c, the line of electric field between each of the linear electrodes 4bn and the fixed electrode 5 is throttled to become an almost straight line state. As a result, a dot can be sharply formed and a sharper image can be obtained.
-
公开(公告)号：JPH05150595A
公开(公告)日：1993-06-18
申请号：JP31279791
申请日：1991-11-27
Applicant: CASIO COMPUTER CO LTD
Inventor： SATO YASUTO
Abstract: PURPOSE:To obtain an inexpensive electrostatic recorder which can control the quantity of a developer stayed in the vicinity of the upstream side of a recording part to a proper quantity, normally and stably carry the developer without flocculating it and generating an immobile layer, and stably form a high quality recorded image without having an after image, an image defect, etc., over a long period. CONSTITUTION:A piezoelectric sensor 19 is disposed on a toner carrying path side part in the vicinity of the upstream side in the toner carrying direction of the recording part W where a recording electrode EL is adjacently opposed on the periphery of a cylindrical electrode 5. A carrying quantity adjusting member 17 turning a regulating plate 17a to change a regulating gap G and adjusting the quantity of the developer carried to the recording part W, is provided on the upstream side of the piezoelectric sensor 19. The carrying quantity adjusting member 17 is timely operated according to the detection value of the piezoelectric sensor 19 by a developer carrying control circuit element not shown by a figure, so that the regulating gap G is adjusted, and the quantity of magnetic toner stayed in the vicinity of the upstream side of the recording part W, within a proper range, is controlled.
-
-
-
-
-
-
-
-
-
Search Results
62
records
(took 0.028 seconds)
