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公开(公告)号：JPH0346545A
公开(公告)日：1991-02-27
申请号：JP18326089
申请日：1989-07-14
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO , NAKAJO YOSHIHIRO , SATO KIMIO
IPC: G01N21/89 , G01N21/892
Abstract: PURPOSE:To derive the defect position of a sheet-like object to be inspected by executing the integration of a clock pulse until a defect signal appears in a photodetecting part after an output appears in a photosensor. CONSTITUTION:A light beam directed and scanned by a projection part P is allowed to transmit through or reflected by a sheet-like object 1 to be inspected, and photodetected by a photodetecting part 9. In this case, a photosensor 8 detects an origin position of scanning of the light beam. In this state, when a defect exists, an output caused by the defect appears in the photodetecting part 9. Therefore, a detector 10 integrates a clock pulse from a clock pulse generator generated before the output caused by the defect appears from the origin of scanning in which the output appears in the photosensor 8, by a pulse counter. This integrating value is related to a distance from a scanning start point of the light beam, and by calculating this distance by a computing element, a position of the defect can be known.
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公开(公告)号：JPH0215285A
公开(公告)日：1990-01-18
申请号：JP16632688
申请日：1988-07-04
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO , NAKAJO YOSHIHIRO
Abstract: PURPOSE:To designate printed surfaces and to select their printing colors by applying processing in each copying stage to a photosensitive body corresponding to the designated printed surface, electrifying the other photosensitive body to polarity opposite to the former photosensitive body and making different the colors of toner for both printed surfaces. CONSTITUTION:Based on printed surface information, an exposing light source 2A uniformly electrifies the photosensitive drum 1A corresponding to the designated printed surface. A primary electrifier 3A further electrifies the body uniformly, and then a secondary electrifier 4A electrifies it with opposite polarity. A light beam LA exposes the information to form an electrostatic latent image. Then a toner-development is executed by a developing device 6A, and a pretransfer electrifier 7A electrifies the surface of the drum 1A to transfer the image. At this time, the photosensitive drum 1B is electrified with polarity opposite to the drum 1A. Thus, the image is printed on the front surface PUP of a printing paper P. Similarly, an image is printed on the rear surface PDW. If the color of toner in the developing unit 6A and a developing unit 6B is changed, color selection can be optional.
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公开(公告)号：JPH01305305A
公开(公告)日：1989-12-08
申请号：JP13612488
申请日：1988-06-02
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO , NAKAJO YOSHIHIRO , NOGAMI RIYOKUICHIROU
IPC: G01B11/24 , G01B11/255
Abstract: PURPOSE:To enable the non-contact measurement of the radius of curvature of a columnar or spherical surface of a test specimen even when the radius is several microns, for instance, by applying a light beam to a part of the test specimen to be measured and by measuring the beam radius or divergence angle of a reflection beam therefrom. CONSTITUTION:An incident beam 2 is reflected by a curved surface 4 and a reflected laser beam 5 proceeds in the reverse direction to the incident direction of the beam 2 and further enters a polarization beam splitter 7 through a 1/4 wavelength plate 8. The polarization plane of the beam 5 is rotated further by 45 deg. in a prescribed direction by the wavelength plate 8 to be parallel to the surface of paper. Accordingly the beam 5 is polarized in the direction (upward direction in the figure) vertical to the beam 2 by the splitter 7. Since the beams 2 and 5 are put thereby on difference axes, the beam radius or divergence angle of the beam 5 can be measured. Accordingly, the radius of curvature of a columnar or spherical surface can be measured in a non-contact manner not only in the case when an entire test specimen has this surface, but also in the case when a part of the test specimen has the same surface and the radius of curvature can be measured even when it is several microns, for instance.
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公开(公告)号：JPH0973011A
公开(公告)日：1997-03-18
申请号：JP22775195
申请日：1995-09-05
Applicant: TORAY INDUSTRIES
Inventor： YOSHIYAMA TAKASHI , TAMURA YOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To make it possible to repair the adhesion defect, if any, the adhesion defect of ink exists within the respective pixel regions of color patterns and to eliminate the wasteful use of transparent substrates by deciding whether adhesion states are good or not before solidification of ink. SOLUTION: Ink is applied to the respective pixel regions of the respective glass substrates PG by coating applicators 6 mounted at respective sliders 5 while a slide table 4 is moved to a gate type frame 3 side. These coating applicators 6 inject the ink R, G, B from respective heads 6a to 6c and apply the ink R, G, B at the respective pixel regions of three arrays, thereby simultaneously forming the color patterns of three colors. The slide table 4 continues to move after the end of the application and sensors 7 detect the adhesion states of the ink of the three colors R, G, B applied respectively at the pixel regions before the solidification of the ink. The information on whether the application states are good or not detected by the sensors 7 is outputted to a controller.
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公开(公告)号：JPH0950172A
公开(公告)日：1997-02-18
申请号：JP20352795
申请日：1995-08-09
Applicant: TORAY INDUSTRIES
Inventor： ASADA HIROYOSHI , NISHINA TOSHIO , TAMURA YOSHIHIRO
Abstract: PROBLEM TO BE SOLVED: To easily control the temperature in the case of heating and also to shorten the latent image forming time by heating a latent image recording part to a temperature equal to or higher than Curie temperature and impressing an electric field so as to form a latent image on a latent image recording medium including a ferroelectric material. SOLUTION: An electrophotographic printer is constituted of a recording means 1, an initializing means 2, a latent image forming means 3, and a charging means 4, etc. The means 2 is controlled so that a corona charger can impress the electric field capable of nearly perfectly orienting the inside polarization of the ferroelectric latent image recording medium of a recording body 1 in one direction. The means 3 simultaneously copes with printing information in a state that a voltage controlled by a grid voltage is impressed on the latent image recording medium of the recording body 1, is irradiated with a semiconductor laser beam 302 modulated by on/off state, and is partially heated to a temp. equal to or higher than the Curie temperature, so that polarization at the part is inversed, and a polarization inversed latent image is formed. Consequently, switching time for polarization inversion can be extremely shortened.
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Patent Agency Ranking
公开(公告)号：JPH08202129A
公开(公告)日：1996-08-09
申请号：JP1291195
申请日：1995-01-30
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO
Abstract: PURPOSE: To facilitate the control of a developing bias voltage and a squeezing bias voltage and to improve image quality by adopting such a constitution capable of making a bias voltage for removing a surplus developer equal to or higher than the developing bias voltage for developing an electrostatic latent image, in an absolute value. CONSTITUTION: In each developing unit, a developing roller 21b and a squeezing roller 21c are connected to a common power source 25 and the bias voltage having the same polarity is applied. Therefore, in an electrophotographic printer 1, the developing bias voltage and the squeezing bias voltage can be easily controlled by the single power source 25. In a photoreceptor drum 11 on which a toner image is developed, toner grains in the toner image are pressed on the surface with electrostatic repulsive force by the squeezing bias voltage, at the time of removing the surplus developer by the squeezing roller 21c. Thus, at the time of removing the surplus developer from the photoreceptor drum 1, the toner image is held thereon, not to be moved to the side of the squeezing roller 21c.
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公开(公告)号：JPH01279273A
公开(公告)日：1989-11-09
申请号：JP10948988
申请日：1988-05-02
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO
Abstract: PURPOSE:To make the printing quality in the main scanning direction same as that in the auxiliary scanning direction by producing plural diffracted beams arranged in a prescribed direction which is different from the main scanning direction and exposing a photosensitive drum to the beams while a main deflector scans the surface of the drum in the main scanning direction. CONSTITUTION:The direction perpendicular to the plane of the figure is the main scanning direction X and a laser beam 1 is made incident on one surface of an acousto- optic modulator element 2 at a fixed incident angle and, at the same time, modulating signals generated from a modulating signal generator are impressed upon the surface. Then the two laser beams, namely, diffracted beams 3 and 4 optically modulated by the element based on the modulating signals are respectively led to the surface 7 of the photosensitive drum through a polygon mirror 5 and f.theta lens 6. The two diffracted beams 3 and 4 thus produced are respectively emitted from the element 2 at a fixed angle theta with the normal l to the beam emitting surface of the element 2 and projected for exposure on the surface 7 of the drum in a state where they are deviated in the auxiliary scanning direction. Therefore, the printing quality in the main scanning direction can be made the same as that in the auxiliary scanning direction.
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公开(公告)号：JPS6324263A
公开(公告)日：1988-02-01
申请号：JP16879786
申请日：1986-07-17
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO , NAKAJO YOSHIHIRO , HORINO HITOSHI , YAMAZAKI MICHIO
Abstract: PURPOSE:To obtain an excellent image by using light having spectral distribution mainly on the short wavelength side shorter than the wavelength reducing the spectral sensitivity of a photosensitive body on the long wavelength side to a half of the maximum value of the spectral sensitivity distribution of the photosensitive body in a full exposure process. CONSTITUTION:The wavelength of light to be used for the full exposure process is changed by using a photosensitive drum forming a photoconductive layer made of CdS and having the shown spectral sensitivity distribution, i.e. the relation between its wavelength WL and sensitivity SR to control exposure so that the surface potential V2 of a part which is not affected by a 1st and 2nd exposure becomes constant independently of the wavelength of the light. When the exposure is controlled so that the surface potential V2 is made constant, the potential V3 of the part affected by the 2nd exposure is made also constant independently of the wavelength of a light source. In order to improve the developing efficiency, light with wavelength shorter than 700nm may be used in the full exposure process. The sensitivity to the wavelength 700nm is a half of the maximum value of the spectral sensitivity distribution of the photosensitive body.
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公开(公告)号：JPS62262817A
公开(公告)日：1987-11-14
申请号：JP10477486
申请日：1986-05-09
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO
Abstract: PURPOSE:To exactly separate each of the light beams which are placed extremely close to each other, by constituting a system in which the n-th (1
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公开(公告)号：JPS6033525A
公开(公告)日：1985-02-20
申请号：JP14250983
申请日：1983-08-05
Applicant: TORAY INDUSTRIES
Inventor： TAMURA YOSHIHIRO , UKAWA SHIYUUICHI
Abstract: PURPOSE:To obtain a compact beam scanning system which scans plural beams by making one light beam into plural parallel light beams through an acousto- optic element and an optical lens, and directing them to a photosensitive medium surface through one ftheta lens and a couple of reflecting mirrors. CONSTITUTION:A laser beam emitted by a laser light source 1 is incident on the acousto-optic element 2. The element 2 is applied with signals 3 and 4 modulated with dichroic video signals for printing through an adder 13. Dichroic beams A and B for printing projected by the element 2 are made into parallel beams through the optical lens 5, and they are reflected by a rotary polygon mirror 6 and converged onto the surface of the photosensitive drum 12 through the ftheta lens 7 and couples of reflecting mirrors 8 and 9, and 10 and 11. Consequently, the compact beam scanning system which scans plural beams is obtained.
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