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1. 发明专利

JP2004310131A Image forming apparatus 有权
公开(公告)号：JP2004310131A
公开(公告)日：2004-11-04
申请号：JP2004192459
申请日：2004-06-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAMOTO MASASHI , MIYASAKA TORU , NAKANO MASARU , SHIMADA AKIRA , MORI KENJI , SASAKI AKIRA , WAKAMATSU KAZUHIRO
IPC分类号： G03G15/00 , G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus which is small-sized, performs high speed printing, records high quality images without a misalignment of respective color images and is superior in maintainability. SOLUTION: In the image forming apparatus, a plurality of photoreceptors are installed vertically on one surface of an intermediate transfer belt which is stretched long vertically. On the opposite surface, a fixing device is installed and each photoreceptor is made into an integral unit constitution. COPYRIGHT: (C)2005,JPO&NCIPI

2. 发明专利

JP2003173016A METHOD OF MANUFACTURING PHOTOMASK 审中-公开
公开(公告)号：JP2003173016A
公开(公告)日：2003-06-20
申请号：JP2001370829
申请日：2001-12-05
申请人： HITACHI LTD
发明人： TANAKA TOSHIHIKO , SHIMADA AKIRA , OKANO MAMORU , HASEGAWA NORIO , HATTORI KOJI
IPC分类号： G03G15/10 , G03F1/54 , G03G15/22 , H05K3/00 , G03F1/08
摘要： PROBLEM TO BE SOLVED: To solve the problem of the deficiency in resolution in forming a photomask by an electrophotographic method and to decrease the appearance defects of the mask, such as clear defects and opaque defects. SOLUTION: The problems described above are solved by any of (1) limiting the scanning width of a laser beam and forming toner patterns by scan and step drawing, (2) using a liquid toner and (3) laminating and forming the toner patterns or combinations thereof or a combination of all thereof. COPYRIGHT: (C)2003,JPO

3. 发明专利

JP2002318476A PRINTING CONTROL METHOD FOR ELECTRO-PHOTOGRAPHY 失效
公开(公告)号：JP2002318476A
公开(公告)日：2002-10-31
申请号：JP2001124171
申请日：2001-04-23
申请人： HITACHI KOKI KK , HITACHI LTD
发明人： MITSUYA TERUAKI , MABUCHI HIROYUKI , ISHII MASAYOSHI , OUCHI HIROBUMI , SHIMADA AKIRA
IPC分类号： G03G15/00 , G03G15/04 , G03G15/043 , G03G15/08
摘要： PROBLEM TO BE SOLVED: To provide a printing control method where a stable image quality can be maintained over the passage of time even in generation of deterioration in a photoreceptor and to provide a recorder where the stable image quality can be maintained over the passage of time even in the generation of the deterioration in the photoreceptor. SOLUTION: In the method, potential of a surface of the photoreceptor is stably maintained over the passage of time by being detected and controlled and control is carried out so that the peripheral electric field of the image is stabilized.

4. 发明专利

JP2001042708A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001042708A
公开(公告)日：2001-02-16
申请号：JP21957399
申请日：1999-08-03
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： EDO SUSUMU , SHIMADA AKIRA , YAMADA SHINTARO
IPC分类号： G03G21/00 , B41J29/46 , G03G15/00
摘要： PROBLEM TO BE SOLVED: To accurately detect abnormality and to stably maintain high image quality by providing three or more state detection parts and deciding an abnormality detection range where the abnormality of the state detection part is detected according to correlation among them. SOLUTION: This device is equipped with a printer engine 204 equipped with an electrifier 2, an exposure device 3, a developing machine 4, a transfer machine 5 and a photoreceptor cleaner 6 around a photoreceptor 1, and a printer controller 200 controlling the engine 204. Furthermore, the device is equipped with two temperature and humidity sensors 8-1 and 8-2, a surface potential sensor 9 and an adhesive amount sensor 10 as the state detection means inside the engine 204. An abnormality detection control part 300 in the controller 200 decides the detection range where the abnormality of the sensor is detected based on measured values by at least three sensors. Then, the control part 300 can be provided outside the controller 200. This method is easily applied to a full color image forming device.

5. 发明专利

JP2001008010A IMAGE RECORDING METHOD AND IMAGE RECORDER 失效
公开(公告)号：JP2001008010A
公开(公告)日：2001-01-12
申请号：JP17629299
申请日：1999-06-23
申请人： HITACHI LTD
发明人： MIYASAKA TORU , YAMAMOTO MASASHI , SHIMADA AKIRA
IPC分类号： H04N1/04 , G03G15/01 , H04N1/29 , H04N1/50
摘要： PROBLEM TO BE SOLVED: To attain a color overlapping system of a color image at a comparatively low cost with high accuracy and high stability by using error information to form a multi-color image according to revised color image information. SOLUTION: An offset detection section 17 using CCDs placed on a carrying transfer belt 9 detects positions of marks in thin lines by each print unit 13 onto the carrying transfer belt 9 in the detection of the offset. An error information calculation section 18 calculates an offset amount that is error information of an image start point, an image width and a rotary angle in the main scanning direction and the subscanning direction from a reference position between images on the basis of data from the offset detection section 17. An image information revision section 24 converts recorded image information data 1 including a plurality of color image information sets sent from a computer or the like on the basis of offset information 22 being the calculated error information and each print process control section 3 controls a print mechanism section including each color interpolation system control section 2 on the basis of the converted data for printing.

6. 发明专利

JP2000018869A INDEPENDENT FIN TYPE HEAT EXCHANGER AND INDOOR UNIT FOR AIR CONDITIONER WITH SUCH HEAT EXCHANGER 失效
公开(公告)号：JP2000018869A
公开(公告)日：2000-01-18
申请号：JP18867598
申请日：1998-07-03
申请人： HITACHI LTD
发明人： SASAKI SHIGEYUKI , KUDO MITSUO , KOGURE HIROSHI , MORIMOTO MOTOO , SHIMADA AKIRA , SHIKAZONO NAOKI
IPC分类号： F28F1/32
摘要： PROBLEM TO BE SOLVED: To provide an independent fin type heat exchange being freely bendable and having a high heat exchanging performance and to provide an indoor unit for an air conditioner reduced in its size using it. SOLUTION: In the independent fin type heat exchanger comprising independent fins 1 fixed at a predetermined interval in a tube axial direction around a plurality of heat transfer tubes 2, shapes of upper ends 101 of the fins 1 fixed to the adjacent tubes 2 in a vertical direction perpendicular to an air flowing direction are each formed in a recess circular arc-like shape. Thus, the fins 1 are freely bendable and ventilating resistances become substantially uniform at respective positions. Further, the exchanger is used for the indoor unit for an air conditioner, and hence the exchanger is formed to enclose a supply fan in a housing to be disposed, and its heat exchanging capacity can be enhanced, thereby reducing in size the indoor unit.

7. 发明专利

JPH10207176A COLOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH10207176A
公开(公告)日：1998-08-07
申请号：JP918397
申请日：1997-01-22
申请人： HITACHI LTD
发明人： NAKANO MASAHIRO , WAKAMATSU KAZUHIRO , TADOKORO HIROYUKI , TERAJIMA ISAMU , SAITO MASAHIKO , KIKUCHI KAZUO , SHIMADA AKIRA , MIYASAKA TORU
IPC分类号： G03G15/01
摘要： PROBLEM TO BE SOLVED: To synthetically satisfy reductions in size, weight, and cost, also image quality, recording speed, maintenance, and reliability by composing a latent- image hold means in the form of a belt extending in a specific direction, and, further, disposing an intermediate transfer body inside a circular arc serving as a carrying path. SOLUTION: Inside a main body composed of a machine frame body 1, the photoreceptive belt 2, used as the latent-image hold means, is set vertically long, and, on the left of the photoreceptive belt 2, a transfer drum 6 as the intermediate transfer body, a transfer device 12, a sheet feeder 10 for a recording medium for example paper, and a fixing device 14 are arranged. Also, the recording-medium carrying path is disposed almost in the form of the circular arc, and the transfer drum 6, the photoreceptive belt 2, developing devices 5Y, 5M, 5C, and 5K, an exposure device 4, and so on are arranged inside the recording-medium carrying path. Such arrangement simplifies the carrying path, and because the carrying path is situated near the machine frame body 1 and can be uncovered easily, the removal of a jammed sheet is easy.

8. 发明专利

JPH1016254A INK-JET RECORDER AND PRINTING METHOD 失效
公开(公告)号：JPH1016254A
公开(公告)日：1998-01-20
申请号：JP17799096
申请日：1996-07-08
申请人： HITACHI LTD
发明人： OKANO MAMORU , FUJIWARA SHIGETAKA , SHIMADA AKIRA
IPC分类号： B41J2/06 , B41J2/205
摘要： PROBLEM TO BE SOLVED: To provide an ink-jet recorder finely changing a dot diameter of ink to be emitted to obtain an image having gradation. SOLUTION: A passage guiding ink from an ink tank, the ink chamber connected to the passage, the electrostriction element connected to the ink chamber so as to be capable of reducing the vol. of the ink chamber, a first pulse generator 10a applying voltage to the electrostriction element, the emitting passage connected to the ink chamber to guide ink to an orifice, a second pulse generator 10b applying voltage across the emitting passage and a recording medium and a control means controlling voltages applied by two kinds of the pulse generators are provided. By this constitution, since an ink amt. can be changed at every dots by independently applying voltage at every emitting passages, a highly detailed image can be obtained.

9. 发明专利

JPH04345188A ELECTROPHOTOGRAPHIC RECORDER 失效
公开(公告)号：JPH04345188A
公开(公告)日：1992-12-01
申请号：JP14525491
申请日：1991-05-22
申请人： HITACHI LTD
发明人： SHIMADA AKIRA , KIRYU MASAE , MARUO SEIJI
IPC分类号： B41J2/44 , G03G15/00 , G03G15/20 , G03G15/36 , G03G21/00 , G03G21/10
摘要： PURPOSE:To provide an electrophotographic recorder which can have easy maintenance control without requiring the exchange of a toner recovery container, can prevent soiling inside a device, and can be drastically miniaturized. CONSTITUTION:In the electrophotographic recorder having a cleaning device 14 composed of a cleaning member 2 removing residual toner on a photosensitive body 1, a toner recovery member 3 recovering/storing removed waste toner, and a toner discharging member 6 discharging the stored waste toner onto a recording medium 11, and a fixing device 13 fixing the waste toner on the recording medium 11 thereon, the waste toner discharged from the toner recovery member 3 onto the recording medium 11 is fixed thereon, by the fixing device 13, and discharged together with the recording medium 11, from the electrophotographic recorder.

10. 发明专利

JPH04344674A DEVELOPER SERVICE LIFE MEASURING METHOD AND DEVICE, ELECTROPHOTOGRAPHIC RECORDER AND DEVELOPING DEVICE 失效
公开(公告)号：JPH04344674A
公开(公告)日：1992-12-01
申请号：JP11744891
申请日：1991-05-22
申请人： HITACHI LTD
发明人： SHIMADA AKIRA
IPC分类号： G03G15/08 , G03G15/09
摘要： PURPOSE:To accurately decide the degree of deterioration by deciding that a developer is deteriorated when a toner concentration when time until the toner concentration reaches a set concentration after toner is replenished, exceeds a tolerance limit time, or setting time lapses after the toner is replenished, does not reach a tolerance limit concentration. CONSTITUTION:After the stirring of the developer is started, the fetching of the output voltage of a sensor driving part 48 is commanded to a memory 52 and the output voltage is transferred to a voltage adding part 54, to generate a deterioration deciding reference voltage Vs. At this time, a timer 56 is started, and the toner is replenished to a replenishing roller 20. The timer 58 is started from when the toner is completely replenished, and when, for instance, 80 seconds lapse after the timer 58 is started, a comparison/decision commanding signal is outputted from the timer 58 to a comparing/deciding part 60. The comparing/deciding part 60 compares a detection voltage Vd with the output voltage Vs, and when Vd

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