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1. 发明专利

JPH0327951A INK JET RECORDING DEVICE 失效
公开(公告)号：JPH0327951A
公开(公告)日：1991-02-06
申请号：JP15521990
申请日：1990-06-15
申请人： HITACHI LTD , HITACHI SEIKO KK , HITACHI KOKI KK
发明人： NISHIYAMA RITSU , YAMADA TAKEHIRO , MATSUDA YASUMASA , NAGAMORI KAZUHARU , SAKATA MASATOSHI
IPC分类号： B41J2/175
摘要： PURPOSE:To make it possible to extend the range of temperature and humidity at which ink viscosity can be maintained within an appropriate range by providing a device to detect the ambient temperature and humidity of the subject device, then changing a diluent for ink viscosity adjustment to a specified value in an ink circulation system based on the detection data and adding the diluent to the system. CONSTITUTION:A temperature detection device 11 and a humidity detection device 12 are installed near a section where particles emitted from a particulate generation part 3 are recorded into a recording medium 5, and detect the temperature and humidity of that section. A control device 13 specifies an optimal diluent addition amount based on the detected temperature and humidity and gives a command to a control device 14. A diluent addition device 10 adds a diluent 17 for ink viscosity adjustment from a diluent liquid tank 9 to an ink circulation system by the amount specified by the control device 14. Thus the effect of environmental conditions (temperature and humidity) on a change in ink viscosity can be minimized.

2. 发明专利

JPS62282940A INK JET RECORDING APPARATUS 失效
公开(公告)号：JPS62282940A
公开(公告)日：1987-12-08
申请号：JP12574886
申请日：1986-06-02
申请人： HITACHI LTD , HITACHI SEIKO KK , HITACHI KOKI KK
发明人： NISHIYAMA RITSU , YAMADA TAKEHIRO , MATSUDA YASUMASA , NAGAMORI KAZUHARU , SAKATA MASATOSHI
IPC分类号： B41J2/175 , B41J2/195
摘要： PURPOSE:To control the viscosity of ink to a stable state, by detecting the air stream of an ink particle flying part to control the addition quantity per a unit time of a diluent for controlling the viscosity of ink added to an ink recirculation route. CONSTITUTION:The ink particle injected from a nozzle 3 is subjected to deflection control by a deflection electrode 7 to be adhered to the material 9 to be recorded wound around a rotary cylinder 8. A rotary cylinder control unit 17 controls a rotary apparatus 18 to rotate the cylinder 8 for the purpose of ink jet recording or to stop the same for the purpose of waiting for recording and the presence of the air stream of an ink particle flying part is detected by the presence of the rotation of said cylinder 8. On the basis of the detection result, a control unit 16 operates a pressure pump and a recovery pump 5 during the operation of an ink jet recording apparatus and controls a pump 13 so that the ink 16 in a tank 1 is recirculated to a recirculation system and a diluent 15 is added to the tank 1 from a tank 14 in quantity according to the diluent addition quantity order from the control unit 17. By this method, the proper control of ink viscosity can be performed.

3. 发明专利

JPS62191158A INK JET RECORDING APPARATUS 失效
公开(公告)号：JPS62191158A
公开(公告)日：1987-08-21
申请号：JP3299086
申请日：1986-02-19
申请人： HITACHI LTD , HITACHI SEIKO KK
发明人： YAMADA TAKEHIRO , YAGUCHI HARUO , NAMEKAWA SATOSHI , MATSUDA YASUMASA , SAKATA MASATOSHI , NAGAMORI KAZUHARU
IPC分类号： B41J2/115 , B41J2/07
摘要： PURPOSE:To certainly perform the generation and charging of an ink particle and to make it possible to shorten a required time, by a method wherein nozzle exciting condition optimiz ing main operation is performed prior to starting recording and, subsequently, recording is performed and, next,a part of nozzle exciting condition optimizing fine correction operation and the recording of an image block are successively performed, and the performing of record ing and that of nozzle exciting condition optimizing fine correction operation are alternately repeated. CONSTITUTION:Nozzle exciting condition optimizing main operation is carried out prior to actual recording operation. Next, a recording signal from a recording signal source 15 is applied to control electrodes 4a, 4b through an electrode change-over circuit 11 and a switching circuit 14 to carry out actual recording. When the recording of one image block or a predetermined block is performed, the finish of recording is detected by an image block recording finish discriminating means C. A nozzle exciting condition optimizing fine correction means B is started and at least a part of nozzle exciting condition optimizing fine correction operation is carried out and, after the nozzle exciting condition optimizing fine adjustment operation between image blocks is finished, the recording of the next image block is performed. The recording of one picture is finished while the image block recording operation and the nozzle exciting condition optimizing fine correction operation mentioned above are repeated.

4. 发明专利

JPH10156536A ARC WELDING POWER SOURCE 失效
公开(公告)号：JPH10156536A
公开(公告)日：1998-06-16
申请号：JP32006796
申请日：1996-11-29
申请人： HITACHI SEIKO KK
发明人： NAGAMORI KAZUHARU , SHINADA TSUNEO
IPC分类号： B23K9/073 , H02M9/00
摘要： PROBLEM TO BE SOLVED: To control plurality of small size high frequency transformers with the driving circuit of a single inverter, to easily make its handling operation and to make the installing space small by connecting inputting sides of plurality of transformers of an equal turn ratio of the inputting side and the outputting side to the outputting end of an inverter circuit, and installing a rectifying circuit at each outputting side of the transformers. SOLUTION: A high frequency alternating current voltage outputted from an inverter circuit 3 is stepped down to a voltage suitable for welding with high frequency transformers 4a, 4b, converted to direct current with rectifying circuits 21a, 21b, and it is supplied to terminals 23, 24. The high frequency transformers 4a, 4b are made to flow with the current so that the output voltages are made equally, respectively, because the high frequency transformers 4a, 4b have the same specification in this executing state, so 1/2 of welding current is made respectively to flow to the output side turn wire and the rectifying circuits 21a, 21b of the high frequency transformers 4a, 4b. In the high frequency transformer 4, the value of the inside impedance is dispersed caused on the dispersion of the production time, further, in a diode, the value of forward direction voltage step-down is dispersed, however, there is practically no problems.

5. 发明专利

JPS6242846A INK JET RECORDER 失效
公开(公告)号：JPS6242846A
公开(公告)日：1987-02-24
申请号：JP18167785
申请日：1985-08-21
申请人： HITACHI SEIKO KK
发明人： NAGAMORI KAZUHARU , YAGUCHI HARUO , NOGUCHI IKUO
IPC分类号： B41J2/01 , B41J29/00
摘要： PURPOSE:To permit a recording medium and a recording to be protected easily by providing an attachment by which to attach a protector for protecting the recording medium and the recording. CONSTITUTION:A tank 7 stores a protecting material for a recording paper and a recording formed on the paper, e.g., a protecting liquid prepared by dissolving a high polymer in a solvent. When recording by recording heads 3a-3d is ended and the end portion 2E of the recording is detected by an end sensor 5, the detected signal is put in a control circuit 12, and on the basis of the signal, a fixed pressure pump 8 is driven by a drive circuit 9 to open a valve 10. The protective liquid is then jetted from a nozzle 11 onto a recording paper 2; and on the other hand, the attachment to attach the heads 3a-3d begins to return to the opposite direction to arrow mark X to turn a rotary drum 1 at an adequate speed. When an aperture (g) where no recording paper 2 is present is directed in a place in the face of the nozzle 1 for every turning, it is detected by a region sensor 6, and on the basis of the detection signal, the control circuit 12 closes a valve 10 and interrupts the jetting of the protective liquid at the moment the aperture (g) passes.

6. 发明专利

JPS592048B2 JPS592048B2 - 失效
公开(公告)号：JPS592048B2
公开(公告)日：1984-01-17
申请号：JP6387779
申请日：1979-05-25
申请人： Hitachi Seiko Kk
发明人： UEISHI YOICHI , FUJIO HIROSHI , NAGAMORI KAZUHARU
IPC分类号： G05B9/02 , G05B19/19 , G05D3/12

7. 发明专利

JPS5822359B2 失效
公开(公告)号：JPS5822359B2
公开(公告)日：1983-05-09
申请号：JP6387879
申请日：1979-05-25
申请人： HITACHI SEIKO KK
发明人： FUJIO HIROSHI , TSUCHA AKIRA , NAGAMORI KAZUHARU , UEISHI YOICHI
IPC分类号： B41J2/49 , B43L13/00

8. 发明专利

JPS5520010A PHASE DETECTING DEVICE 失效
公开(公告)号：JPS5520010A
公开(公告)日：1980-02-13
申请号：JP9159078
申请日：1978-07-28
申请人： HITACHI SEIKO KK
发明人： OCHIAI MASAYASU , FUJIO HIROSHI , UEISHI YOUICHI , MIYAGAWA MASAYUKI , NAGAMORI KAZUHARU
IPC分类号： H03K5/26
摘要： PURPOSE:To omit the low-pass filter with a high quick-response performance and reduced ripple and thus to enhance the control performance by carrying out the phase detection with the pulse number until the contents of the register or the counter are counted up. CONSTITUTION:Register 4 counts repetitively the input signal pulses up to the prescribed number, and memory 6 memorizes the contents of register 4 in accordance with the fixed timing 5 of the comparison signal having the phase change following the phase of the command signal which produces the phase delay or gains according to the dropout pulse number or additional pulse number of the input signal pulse delivered from register 4. Thus the phase difference is detected 7 between the command signal and the comparison signal based on the contents of memory 6. As a result, the low-pass filter can be omitted, enhancing the control performance.

9. 发明专利

JPH0684076B2 失效
公开(公告)号：JPH0684076B2
公开(公告)日：1994-10-26
申请号：JP3299086
申请日：1986-02-19
申请人： HITACHI SEISAKUSHO KK , HITACHI SEIKO KK
发明人： YAMADA TAKEHIRO , YAGUCHI HARUO , NAMEKAWA SATOSHI , MATSUDA YASUMASA , SAKATA MASATOSHI , NAGAMORI KAZUHARU
IPC分类号： B41J2/115 , B41J2/07

10. 发明专利

JPH0263769A INK JET COLOR RECORDING DEVICE 失效
公开(公告)号：JPH0263769A
公开(公告)日：1990-03-05
申请号：JP21495888
申请日：1988-08-31
申请人： HITACHI SEIKO KK
发明人： ARAI TOSHIHIRO , NAGAMORI KAZUHARU , SAKATA MASATOSHI
IPC分类号： B41J2/21 , B41J2/52 , B41J2/525 , G06K15/10 , H04N1/23
摘要： PURPOSE:To brighten a color tone in a low gradation area and besides, to smooth variation in a color tone according to a gradation level by a method wherein for the number of striking of black dots, an increase of the number of dots corresponding to a gradation level signal is restrained in the low gradation area, and the increase of the number of dots corresponding to the gradation level signal is enlarged in a high gradation area. CONSTITUTION:For a threshold matrix for black 1, a unit area corresponding to one pixel is divided into 4X4 matrixes, and a threthold Tij is established to each of then. Then, power is applied thereto, and a gradation level signal Vij is inputted to a comparator 2. The comparator 2 compares the gradation level signal Vij with the threshold Tij of a threshold matrix 3 and only when it is larger than the threshold Tij corresponding to the threshold matrix 1, a recording signal is generated. Herein, since it is so set that as the threshold Tij grows higher, an increment becomes less, the number of increased dots per one gradation level grows larger as the gradation level signal Vij becomes higher. Thereby, a color lightens in a low gradation area, and a recording image of smooth variation in the color toner can be obtained in the all gradation area.

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