公开(公告)号：EP0758180A4

公开(公告)日：1997-10-01

申请号：EP96903245

申请日：1996-02-27

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  TAMURA YOSHIHIRO ,  OKITA MASAHIRO ,  HARA HIDETOSHI ,  INAGAKI JUN ,  MATSUMURA JUNICHI ,  YAMASAKI MITIO ,  TANAKA YUJI

IPC: G03G15/01 ,  H04N1/29 ,  H04N1/405 ,  G03G15/10

CPC classification number: H04N1/4055 ,  G03G15/0121 ,  G03G15/0152 ,  G03G15/0173 ,  G03G2215/0174 ,  G03G2215/018 ,  G03G2215/0193 ,  G03G2215/0629 ,  H04N1/29

Abstract: An electrophotographic device and electrophotography are provided which undergo no significant influence of dot gain, can realize a smooth tone representation and a high tone reproduction, and are less likely to give rise to moire. According to one embodiment, in binarizing a continuous tone image, a frequency modulation screening method is used to form a latent image free from moire and having a high relative resolution. The latent image thus obtained is developed with a liquid developer to form a thin toner layer, thereby forming a toner image having no significant mechanical and optical dot gains.

公开(公告)号：JPH09320120A

公开(公告)日：1997-12-12

申请号：JP13333996

申请日：1996-05-28

Applicant: TORAY INDUSTRIES

Inventor： TAMURA YOSHIHIRO ,  NONAKA TOSHINAKA

IPC: G11B7/26 ,  G11B7/0055

Abstract: PROBLEM TO BE SOLVED: To make enable processing an output of processing energy at high speed by controlling the processing energy output, so that when an energy giving position exists in an inner peripheral part of a recording disk, it is controlled to be smaller than the case when the position exists in the outer peripheral part. SOLUTION: A rotating device 7 holding an optical disk 1 to initialized is started to be rotated uniform speed at respective speeds Wo(rad/sec). Then, an exposure unit is moved, so that the position r of the energy giving position 10 in the disk radial direction of the exposure unit 2 on the optical disk 1 becomes the r imm, corresponding to the innermost peripheral part of the recording area of the optical disk 1. Simultaneously, a traverse motor 3 is rotated until the position r of the energy-giving position 10 ion the disk radial direction becomes the rf mm, corresponding to the outermost peripheral part of the recording area of the optical disk 1.

公开(公告)号：JPH09239968A

公开(公告)日：1997-09-16

申请号：JP4911396

申请日：1996-03-06

Applicant: TORAY INDUSTRIES

Inventor： TAMURA YOSHIHIRO ,  YOSHIYAMA TAKASHI ,  HISADA TOKUO

IPC: B41J2/01 ,  B41J25/308 ,  B41J29/00 ,  D06P5/00

Abstract: PROBLEM TO BE SOLVED: To shorten a printing time by a method wherein an introduced printing medium is carried by a belt under effecting a crease streching and a width direction positioning and a printing process is held at the printing part which is arranged oppositely by a printing medium and one or more line heads as many as color numbers, thereafter, dried by a drying part. SOLUTION: A sheet printing medium is introduced to a predetermined position of a juxtapositioned carrier part 3 under effecting a crease streching, a centering, a curl correcting with two or more rolls 2b at the introduction part 2. In the carrier part 3 an adhesive agent is applied to a carrier belt 3b with a coating roll 3c in two or more steps and the introduced printed medium is pressed and stuck to the carrier belt 3b by a pressing roller 3e, and carried to the printing 4 in this state. A printing part 4 is arranged orthogonally to carrying direction of the printing medium, and arranged oppositely over the allouer width of a carrying belt 3, and has a line head 40 corresponding to an ink used. The print processed printing medium is dried at a pre-dry part 5, and further a drying part 6.

公开(公告)号：JPH08286473A

公开(公告)日：1996-11-01

申请号：JP8959895

申请日：1995-04-14

Applicant: TORAY INDUSTRIES

Inventor： ASADA HIROYOSHI ,  NISHINA TOSHIO ,  TAMURA YOSHIHIRO

IPC: G03G15/02 ,  G03G15/05 ,  G03G15/08

Abstract: PURPOSE: To repeatedly obtain a large number of high image quality prints by a single time of latent image formation even if a latent image is not formed every time the development and transfer are repeated by electrifying a ferroelectric latent image recording medium before the development. CONSTITUTION: This recording device is constituted to include a latent image forming means 2 for forming the latent image based on printing information on the ferroelectric latent image recording medium, a developing means 4 developing the latent image, to obtain a visible image and a transfer means 5 transferring the visible image onto a recording medium and provide an electrifying means 3 before the developing means 4. Preferably, a charge is uniformly imparted to the latent image recording medium by the electrifying means 3 and preferably, a destaticization means 8 is provided after the transfer means 5 and just before the electrifying means 3. Further, it is preferable that the charge having a polarity opposite to that of the electrifying means 3 is uniformly imparted to the latent image recording medium by the destaticization means 8. In this way, when the charge is uniformly applied to the full surface of the ferroelectric latent image recording medium on which the latent image is formed, the development so as to amplify the surface potential difference between an image part and a background part is attained.

公开(公告)号：JPH0822203A

公开(公告)日：1996-01-23

申请号：JP15588994

申请日：1994-07-07

Applicant: TORAY INDUSTRIES

Inventor： TAMURA YOSHIHIRO ,  HARA HIDETOSHI

IPC: G03G15/01 ,  G03G15/16

Abstract: PURPOSE:To provide an electrophotographic device and an electrophotographic method capable of printing in consideration of the kind and the thickness of a recording medium. CONSTITUTION:An electrophotographic printer applying the electrophotographic device and the electrophotographic method is provided with an intermediate transfer drum 66 which is rotated in contact with a photoreceptor drum 24, an electric motor 106 used for these drums in common, a controller 108 for controlling the rotation of the electric motor 106, a kind sensor 120 electrically connected with the controller 108 and prepared for detecting the kind of the recording medium, a thickness sensor 110 for detecting the thickness of the recording medium, a kind setting device 122 and a thickness setting device 112 for respectively setting the kind and the thickness of the recording medium.

公开(公告)号：JPH06208266A

公开(公告)日：1994-07-26

申请号：JP241693

申请日：1993-01-11

Applicant: TORAY INDUSTRIES

Inventor： TAMURA YOSHIHIRO ,  AZUMA NOBORU ,  KATO KIYOSHI

IPC: B41J2/385 ,  B65H29/58 ,  B65H29/60 ,  B65H85/00 ,  G03G15/00

Abstract: PURPOSE:To provide the recording medium transporting device, recording medium transporting method and electrophotographic printer for both-side printing having a degree of freedom relating to printing procedures without taking an excessive space for primarily housing the recording medium under printing. CONSTITUTION:This recording medium transporting device 70 has a main transporting path 71 for transporting the recording medium and a bypass transporting path 72 for inverting the recording medium and returning the recording medium to the main transporting path. This recording medium transporting method consists in turning the front side of the recording medium up by the main transporting path having a transporting means 1a freely rotatable forward and backward and transporting this recording medium, then turning over the recording medium by the bypass transporting path 72, returning the recording medium to the main transporting path 71, turning the rear side up and transporting the recording medium again to the main transporting path. This electrophotographic printer 1 has a photosensitive body 11, an exposing means for forming the electrostatic latent image based on printing information on this photosensitive body, a developing means 20 for developing the electrostatic latent image on the photosensitive body with toners to form a toner image, an intermediate transfer medium 30 held in pressurized contact with the photosensitive body and transferred with the toner image on the photosensitive body and a recording medium transporting device 70 for transporting the recording medium between this intermediate transfer medium 30 and a fixing roll 51 and can freely print both surfaces of the recording medium.

公开(公告)号：JPS62119514A

公开(公告)日：1987-05-30

申请号：JP25866685

申请日：1985-11-20

Applicant: TORAY INDUSTRIES

Inventor： TAMURA YOSHIHIRO

IPC: G02B26/12 ,  G02B5/09

Abstract: PURPOSE:To make a lens system compact by constituting a reflecting face of a part of a spherical face. CONSTITUTION:Since the reflecting face is constituted of a part of a spherical face, the curvature of the reflecting face in a plane orthogonal to a revolving shaft of a rotary polygonal mirror 4 and that in a plane parallel with the revolving shaft of the rotary polygonal mirror are made equal to each other, and therefore, the reflecting face is concerned in image formation of light equally in both of the plane orthogonal to the revolving shaft of the rotary polygonal mirror and the plane parallel with it. Consequently, it is unnecessary to use a lens different in curvature in planes orthogonal to and parallel with the revolving shaft of the rotary polygonal mirror in a lens system arranged in the light incidence side of the rotary polygonal mirror. Thus, the lens system is made compact.

公开(公告)号：JPH09218542A

公开(公告)日：1997-08-19

申请号：JP2708496

申请日：1996-02-14

Applicant: TORAY INDUSTRIES

Inventor： NAGASE KOICHI ,  TAMURA YOSHIHIRO ,  ASADA HIROYOSHI

IPC: G03G9/12 ,  G03G9/13 ,  G03G13/10 ,  G03G15/10

Abstract: PROBLEM TO BE SOLVED: To provide a developer stable in temp. and process. SOLUTION: This developer is produced by dispersing color particles having 0.1 to 2.5μm average particle size and comprising at least a resin and a coloring agent in an insulating liquid. In this method, the insulating liquid essentially consists of a hydrocarbon solvent. The hydrocarbon solvent has a boiling point between >=200 deg.C and =1cSt and

公开(公告)号：JPH06242658A

公开(公告)日：1994-09-02

申请号：JP1194993

申请日：1993-01-27

Applicant: TORAY INDUSTRIES

Inventor： HARA HIDETOSHI ,  TAMURA YOSHIHIRO ,  INAGAKI JUN

IPC: G03G15/01 ,  G03G15/10 ,  G03G15/16 ,  G03G21/10 ,  G03G21/00

Abstract: PURPOSE:To provide an electrophotographic printer which is excellent in the transfer property of a multicolor toner image from a photosensitive drum to an intermediate transfer drum, provided with a cleaning means by which the life of the photosensitive drum is not spoiled, and where toner is easily exchanged, and an electrophotographic printing method. CONSTITUTION:This electrophotographic printer 1 is provided with the photosensitve drum 11, an exposure means successively forming plural electrostatic latent images according to color-separated printin8 information on the photosensitive drum, a developing means 20 obtaining the toner image by successively developing the electrostatic latent image on the photosensitive drum with the toner having a hue corresponding to the color-separated printing information, an intermediate transfer medium 31 which is allowed to come into press-contact with the photosensitive drum, and to which the toner image on the photosensitive drum is successively transferred, so that the multicolor toner image is formed, a carrying means 70 carrying in and out a recording medium P to which the multicolor toner image formed on the intermediate transfer medium is transferred to the intermediate transfer medium, and a thermal fixing means 50 which is allowed to a come into press-contact with the intermediate transfer medium through the recording medium.

公开(公告)号：JPH03278332A

公开(公告)日：1991-12-10

申请号：JP8009190

申请日：1990-03-27

Applicant: TORAY INDUSTRIES

Inventor： HARA HIDETOSHI ,  TAMURA YOSHIHIRO

IPC: G11B7/135

Abstract: PURPOSE:To provide the compact device by disposing a collimator lens in a position where the laser beam in a single mode oscillation direction is collimated and a cylindrical lens system in such a manner that the axis thereof aligns to a multimode oscillation direction. CONSTITUTION:The collimator lens 6 is disposed in the position where the laser beam of the single mode oscillation direction among the laser beams is collimated. The cylindrical lens system 7 is constituted of at least two pieces of the cylindrical lenses disposed in such a manner that the axes align to the multimode oscillation direction. The beams are shaped to an arbitrary shape by the cylindrical lenses 8, 9 for shaping and further and astigmatism is corrected by a cylindrical lens 10 for correcting the astigmatism in the cylindrical lens system 7. The entire part of the optical system including a light source is formed compact in this way.