公开(公告)号：JP2001350338A

公开(公告)日：2001-12-21

申请号：JP2000167816

申请日：2000-06-05

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  NAKAJO YOSHIHIRO ,  KIMOTO KAZUYUKI

IPC: G03G15/01 ,  G03G15/08

Abstract: PROBLEM TO BE SOLVED: To provide a developing device and an image forming device capable of minimizing an increase in cost and the dispersion of property, and moreover reducing possibility of erroneous insertion of a toner cartridge. SOLUTION: The cartridge being packed with image forming particles is provided with an attaching/detaching key being specific to the kind of the cartridge, on an end part of the attaching/detaching direction to a developing device main body, and an acceptable part of the developing device main body is provided with the acceptable key for allowing the attachment of the cartridge only in the case that the attaching/detaching key of the cartridge is fit to the cartridge.

公开(公告)号：JPH11202610A

公开(公告)日：1999-07-30

申请号：JP412198

申请日：1998-01-12

Applicant: TORAY INDUSTRIES

Inventor： KANAMORI HAJIME ,  TAKATSUKI YOSHINOBU ,  ASADA HIROYOSHI

IPC: G03G15/08

Abstract: PROBLEM TO BE SOLVED: To detect an approximate value to the actual toner concentration even when the developer amount or an environmental condition is changed by obtaining the toner concentration based on the measured value of the physical properties of a developer in a compressed state. SOLUTION: A rotatable stirring member 100 is arranged nearly in the center part of a developer container 51. A toner replenished from a toner replenishing roller 57 is stirred with a carrier. A toner concentration sensor 60 detecting the permeability of a developer is attached to the housing bottom face of a developing device 5 housing. A comparator 62 discriminates the magnitude relation between the maximum value of the absolute value of the voltage within the stirring and rotating cycle of the member 100 from the analog output of the sensor 60 and a reference voltage through a peak hold circuit 61 outputting the maximum value in every one cycle, and inputs the discriminated result to a CPU 63. The CPU 63 judges the toner concentration in the container 51 from the signal. In the case of judging that the toner concentration is low, a motor 58 is driven and the roller 57 is rotated to replenish the specified amount of the toner.

公开(公告)号：JPH10254257A

公开(公告)日：1998-09-25

申请号：JP35895397

申请日：1997-12-26

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  INAGAKI JUN ,  TANAKA SUKEYUKI

IPC: G03G15/00 ,  G03G7/00 ,  G03G9/12 ,  G03G15/01 ,  G03G15/11 ,  G03G15/16

Abstract: PROBLEM TO BE SOLVED: To avoide deterioration in printing quality and to enable an excellent transfer in a wider paper range, by changing process conditions in accordance with the surface 10-points average roughness of a recording material. SOLUTION: At the time of transferring a toner image to the recording material 6 from a photoreceptor 2, on which the toner image is formed with a liqiud developer being made so that toner grains are dispersed in a liquid carrier, the process conditions are changed according to the surface 10-points average roughness Rz of the recording material 6. The recording material 6 whose smoothenss is high is in a state where the gap between the surfaces of the photoreceptor and the recording material is filled with the liqiud carrier (a), but in the recording material 6 whose smoothness is low, the gap remains without being filled with the liquid carrier, to prevent the electrophoresis of the toner grains (b). In such a case, squeeze gaps of each color or the rotational speed of a squeeze roller is varied according to the surface 10-piece average roughness Rz of the recording material 6. In a mat system coating sheet for instance, the squeezing gap is widened or the circumferential speed of the squeezing roller is reduced to make the amount of the liquid carrier on the photoreceptor large.

公开(公告)号：JPH10186865A

公开(公告)日：1998-07-14

申请号：JP29706397

申请日：1997-10-29

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  TAMURA YOSHIHIRO ,  NAGASE KOICHI ,  NOURA TAKAHIRO ,  TSUCHIMOTO TATSURO ,  YOKOYAMA KYOKO

IPC: G03G9/12 ,  G03G9/13 ,  G03G15/10

Abstract: PROBLEM TO BE SOLVED: To transfer image-deterioration free toner-image by having a developing means which forms a toner image from a latent image on an image carrier by the use of liquid developer containing toner particles whose charge hold rate has a specific value or above, and a means which transfers the toner image to a transfer material from the image carrier. SOLUTION: On the surface of the photoreceptor 2 the electrostatic latent image is formed with light emitted from an exposure means. A developing means 8 has a first developing unit 8a - a fourth developing unit 8d. In the first developing unit 8a for example, a developing roller 13a and a main squeeze roller 14a are arranged parallel with each other in a liquid vessel 25a holding the liquid developer containing the toner particles having a charge hold rate of 50% or more. At the development time, the developing units 8a-8d are moved one after another in that order to a latent-image formation means 27 by a drive means, electrostatic latent images are formed successively based on information on print subjected to color separation, and they are transferred onto the recording material 6 held on a transfer drum 3.

公开(公告)号：JPH08298595A

公开(公告)日：1996-11-12

申请号：JP3628296

申请日：1996-02-23

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  TAMURA YOSHIHIRO ,  OKITA MASAHIRO ,  HARA HIDETOSHI ,  INAGAKI JUN ,  MATSUMURA JUNICHI ,  YAMAZAKI MICHIO ,  TANAKA SUKEYUKI

IPC: G03G15/01 ,  H04N1/403

Abstract: PURPOSE: To form a toner image having high relative resolution and smooth multilevel reproducibility force without generating moire by developing continuous multilevel images with liquid developer by using a frequency modulation screening method when the image is threshold processed. CONSTITUTION: An electrophotographic printer 1 is provided with a latent image forming means 10, a developing means 20, an intermediate transfer medium 30, a cleaning means 40, a transfer/fixation means 50, a charger 60 before transfer, an auxiliary squeeze means 70, a mist correcting device 80 and the image thresholding means of continuous multilevel images. The latent image forming means 10 is irradiated with the light for exposure from an exposure means. Continuous multi-level image data is converted into binary image data by a frequency modulation screening method, a latent image is formed on a latent carrier medium based on the converted binarized image data, the formed latent image is developed with liquid developer and a toner image is formed.

公开(公告)号：JPH08286519A

公开(公告)日：1996-11-01

申请号：JP2818596

申请日：1996-02-15

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI

IPC: G03G15/01 ,  G03G15/06 ,  G03G15/10

Abstract: PURPOSE: To obtain an electrophotograph excellent in color reproducibility of a color image by previously setting at least one of a developing bias voltage and a developer concentration in each developer. CONSTITUTION: A developing means 20 arranged on the right of a photoreceptor drum 11 is horizontally moved to the side of the photoreceptor drum 11 by a driving means, so that a yellow toner image is developed by a first developing unit 21, a magenta toner image is developed by a second developing unit 22 and cyan and black toner images are successively developed similarly. At this time, the concentrations of the developers of each color and the developing bias voltages applied to developing rollers in the developing units 21-24 are previously set at prescribed values respectively. Therefore, the color balance of each developed electrostatic latent image is suitably kept. Thus, the toner images developed by each developing unit are successively transferred to an intermediate transfer drum 31 and a multicolor toner image obtained by the laminating of the toner images of four colors is formed on the drum 31.

公开(公告)号：JPH08216459A

公开(公告)日：1996-08-27

申请号：JP2713795

申请日：1995-02-15

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  TAMURA YOSHIHIRO

IPC: B41J2/525 ,  B41J5/30 ,  G03G15/00 ,  G03G15/01 ,  G03G15/08 ,  G03G15/36 ,  G06F3/12 ,  H04N1/29

Abstract: PURPOSE: To record an image in a manner that an increase in memory size can be restricted by producing image data for each color at least after image formation of a previous color or in parallel with image formation of a previous color. CONSTITUTION: Color-specific images are formed in sequence on the basis of multiple color-specific image data, and these color-specific images are superimposed to form a color image. In this case, color-specific image data re produced at least after an image of a previous color is formed, or in parallel with image formation of a previous color. In this recording method, an electrophotographic system by which an electrostatic latent image on a latent image supporting medium is developed, the developed image is transferred to an intermediate transfer medium and superimposed on the intermediate transfer medium and recorded to a recording medium, is suitable. After image formation of a previous color, during image data production waiting time, it is preferable that the latent image supporting medium be separated from the intermediate transfer medium.

公开(公告)号：JPH08211754A

公开(公告)日：1996-08-20

申请号：JP1950195

申请日：1995-02-07

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  TAMURA YOSHIHIRO

IPC: G03G15/01 ,  G03G15/08 ,  G03G15/10 ,  G03G15/16

Abstract: PURPOSE: To restrain image flowing in a lateral direction by developing an electrostatic latent image in a state where a latent image carrying medium and an intermediate transfer medium are grounded and electrostatically charging the latent image carrying medium to have the same polarity as toner particles before an image is transferred on the intermediate transfer medium. CONSTITUTION: An intermediate transfer drum 31 is grounded and also press-contacted to a photoreceptor drum 11, so that toner images are successively laminated and transferred on the drum 31 every time the toner images of respective hues are developed by the developing units 21 to 24 of a developing means 20. After removing excess developer from the surface of the drum 11 where the toner image is developed by an auxiliary roller 71, the drum 11 is electrostatically charged to have the same polarity as the toner particles by a pretransfer charger 60. At such a time, the charger 60 electrostatically charges the drum 11 so that the absolute value of surface potential in an area where the developed toner image exists may be lower than the absolute value in the area where the image does not exist. Therefore, a confinment effect for the toner particles in the lateral direction is achieved in addition to a fixing effect and a transfer electric field reinforcing effect for the developed toner image, and the image flowing in the lateral direction is restrained.

公开(公告)号：JPH07262747A

公开(公告)日：1995-10-13

申请号：JP5271695

申请日：1995-03-13

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI

IPC: G11B23/38

Abstract: PURPOSE:To simply impart an identification mark consisting of a character or a sign of printing type onto a storage medium such as a floppy disk by providing the device with a print head part. CONSTITUTION:This device is provided with a storage medium insertion part for inserting the floppy disk 2 of a rewritable storage medium and the print head part consisting of a thermal head unit 4, etc., executing a printing on a prescribed position of the inserted storage medium or the housing of the storage medium in a visible state. Thus, the identification mark, etc., is imparted in the state where a relative positional relation between the print head part and the storage medium is decided unequivocally. Thus, a systematic label 22 is realized extreamly simply and clearly without using a word processor, etc., specially as in the conventional manner.

公开(公告)号：JPH07262746A

公开(公告)日：1995-10-13

申请号：JP5271595

申请日：1995-03-13

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI

IPC: G11B23/38

Abstract: PURPOSE:To simply impart an identification mark consisting of a character or a symbol of printing type onto a recording medium such as a floppy disk by optionally providing a print function in an external storage device. CONSTITUTION:This external storage system is provided with a disk drive device 1 being the external storage device, a printer part for the identification mark and a control part controlling the printer part. The disk drive device 1 records or reproduces information on/from the floppy disk 2 of a rewritable recording medium. The printer part is provided so that a positional relation relative to the floppy disk 2 which the information is recorded to or reproduced from by the disk drive device 1, is decided unequivocally, and is provided with a thermal head unit 4 and a stepping motor 5 and a belt 6 for moving the unit 4 to print the identification mark on the housing of the floppy disk 2. Further, the control part controls the printing work of the printer part.