Patents by Inventor Kazuo Sanada
Kazuo Sanada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6333144Abstract: In a developing processing method and apparatus in which developing processing is carried out in such a manner that a processing solution is jetted from jetting holes to an emulsion surface of a photosensitive material, a hole diameter of the jetting holes is set to be 0.5 mm to 0.9 mm. In this case, clogging of the jetting holes does not easily occur and the processing solution can be jetted from the jetting holes stably for a long period of time. Accordingly, non-uniform processing is rarely caused. Intervals between the jetting holes in the transverse direction of the photosensitive material are each in a range of 3.0 mm to 4.5 mm. The jetting holes are disposed in such a manner that jetting holes of adjacent three rows in a direction in which the photosensitive material is conveyed are located at different positions to form a staggered arrangement, and the three rows of jetting holes are formed repeatedly.Type: GrantFiled: December 28, 1999Date of Patent: December 25, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Hideaki Nomura, Kazuo Sanada
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Patent number: 6247789Abstract: A liquid ejection apparatus includes an ejection tank disposed above a conveying path and storing an image-forming solvent, a nozzle plate provided at the ejection tank as a bottom wall of the ejection tank and having a plurality of nozzle holes for ejecting the image-forming solvent, and at least one actuator for moving the nozzle plate reciprocally toward and away from an image-recording material on the conveying path. As the image-forming solvent is ejected from the nozzle holes, bubbles may enter into the ejection tank by way of the nozzle holes. However, the bubbles rise in the ejection tank without remaining in vicinities of the nozzle holes. As a result, a case in which bubbles close the nozzle holes and prevent the image-forming solvent from being released from the nozzle holes is avoided. Consequently, the image-forming solvent can be uniformly applied onto the image-recording material.Type: GrantFiled: July 27, 1998Date of Patent: June 19, 2001Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuo Sanada
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Publication number: 20010002951Abstract: A developing device in which, after a film onto which an image was exposed has been heat-development processed, an image reader reads image information from the film and the image information is recorded onto a floppy disk. Then the film from which the image information was read is transported to a cutting apparatus. At the cutting apparatus, the film is grippedly transported between a cutter roller and a rubber roller and the film is destroyed such that the image information thereon cannot be read. The cutting apparatus is built into the interior of the developing device. Thus, when the film is ejected to an eject tray provided outside the developing device, the image information is already in an indecipherable state. Hence, the confidentiality of the recorded image information is reliably assured.Type: ApplicationFiled: December 4, 2000Publication date: June 7, 2001Inventor: Kazuo Sanada
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Patent number: 6241401Abstract: Photosensitive material which is a silver halide photosensitive material optimally used for copies of a color film original and the like is coated with developing solution from the nozzle holes of a spray tank. A chamber provided with an internal cavity is disposed on the opposite side of the transporting path to the spray tank with the transporting path sandwiched therebetween. The upper portion of the chamber is covered with a heating plate. The heating plate is pierced with a plurality of suction holes which penetrate from the inside of the chamber to the outside thereof. The unexposed surface of the photosensitive material is suctioned through the suction holes and the heating plate heats the photosensitive material as well as guides the photosensitive material. Downstream of the heating plate on the photosensitive material transporting path D, transporting rollers are disposed for transporting the photosensitive material and for squeezing out developing solution from the photosensitive material.Type: GrantFiled: October 28, 1998Date of Patent: June 5, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuo Sanada, Tsutomu Takatsuka, Seiichi Inoue
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Patent number: 6238108Abstract: Water is first applied to a film by an applying device. Next, the film to which water is applied is heated and conveyed by a single heating drum. Plural chemical reactions are conducted in such a manner that a development processing sheet and a fixing processing sheet are sequentially superposed on the film in accordance with chemical reaction processes, and thereafter, are peeled from the film. As described above, due to the plural chemical reactions being conducted during a period of time in which the film is heated and conveyed by the single heating drum, non-uniform processing of the film when the film is transferred from one processing to another one does not occur.Type: GrantFiled: October 12, 1999Date of Patent: May 29, 2001Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuo Sanada
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Patent number: 6213593Abstract: An image-forming apparatus includes an application device for applying an image-forming solvent to an image-recording material. The application device has a plurality of nozzle holes for ejecting and applying the image-forming solvent to the image-recording material. The application device applies the image-forming solvent to the image-recording material such that sets of three drops of the image-forming solvent, which are ejected from the plurality of nozzle holes and applied onto the image-recording material, are applied onto the image-recording material so as to contact each other without any spaces therebetween. Accordingly, a uniform film (coat) of the image-forming solvent can be formed on the image-recording material.Type: GrantFiled: December 20, 1996Date of Patent: April 10, 2001Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuo Sanada
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Patent number: 6210049Abstract: An image forming apparatus including an injector disposed opposite the transfer path of an image recording material and injecting an image forming solvent toward the image recording material, and a guide member having suction holes for suction, disposed opposite the injector with respect to the transfer path for the image recording material and guiding the image recording material by sucking through the sucking holes. Accordingly, since the guide member guides the image recording material by sucking through suction holes, a clearance between the injector and the image recording material is kept constant during injection of the image forming solvent, so that the image forming solvent can be applied to the image recording material uniformly.Type: GrantFiled: December 24, 1998Date of Patent: April 3, 2001Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshihiko Yamada, Kazuo Sanada, Tsutomu Takatsuka
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Patent number: 6079633Abstract: An image forming solvent stored in a bottle is sent to a sub tank by a pump. The image forming solvent with the bubbles eliminated at a sub tank with the upper end open is filled into a jetting device having nozzle holes. The water level of the sub tank is kept constant by a discharge pipe communicating with the sub tank at a position lower than the jetting device. As a result, the inside of the jetting device is in a constant negative pressure state so that the atomized image forming solvent is jetted from the jetting device. At this time, the atomized image forming solvent can be jetted stably. The jetting state of the jetting device is not effected by the pulsation of the sub tank pump.Type: GrantFiled: June 18, 1998Date of Patent: June 27, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Hiroshi Inoue, Tsutomu Takatsuka, Kazuo Sanada
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Patent number: 6053976Abstract: A fluid injecting apparatus includes an injecting tank disposed in opposition to the transfer path of an image recording material and storing an image forming solvent, a filler filled within the injecting tank and forming a smoothly curved inner wall surface of the injecting tank, a nozzle plate disposed in the injecting tank as part of the wall surface of the injecting tank in opposition to the transfer path of the image recording material, having a plurality of nozzle holes for injecting the image forming solvent and injecting the image forming solvent from the plurality of nozzle holes by an oscillation, and a spacer member disposed at the back surface end of the filler and constituting part of the injecting tank opposing the plurality of nozzle holes. Accordingly, since the wall surface of the injecting tank is made a smoothly curved surface by the filler, the bubbles do not tend to attach to it, so the image forming solvent can be evenly applied on the image recording material.Type: GrantFiled: May 5, 1998Date of Patent: April 25, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Tsutomu Takatsuka, Kazuo Sanada
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Patent number: 6036105Abstract: A liquid spraying apparatus according to the present invention comprises a spray tank which stores an image forming solvent, a nozzle plate which is provided as a portion of the wall surface of the spray tank, and has a plurality of nozzle holes formed thereon for spraying the image forming solvent, and which can spray the image forming solvent from the plurality of nozzle holes through a reciprocating movement, and a water repelling layer which is provided on the internal periphery of the nozzle holes of the nozzle plate and repels the image forming solvent.Type: GrantFiled: February 27, 1998Date of Patent: March 14, 2000Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuo Sanada, Hiroshi Inoue
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Patent number: 6010254Abstract: A liquid ejection apparatus includes an ejection tank disposed above a conveying path and storing an image-forming solvent, a nozzle plate provided at the ejection tank as a bottom wall of the ejection tank and having a plurality of nozzle holes for ejecting the image-forming solvent, and at least one actuator for moving the nozzle plate reciprocally toward and away from an image-recording material on the conveying path. As the image-forming solvent is ejected from the nozzle holes, bubbles may enter into the ejection tank by way of the nozzle holes. However, the bubbles rise in the ejection tank without remaining in vicinities of the nozzle holes. As a result, a case in which bubbles close the nozzle holes and prevent the image-forming solvent from being released from the nozzle holes is avoided. Consequently, the image-forming solvent can be uniformly applied onto the image-recording material.Type: GrantFiled: December 20, 1996Date of Patent: January 4, 2000Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuo Sanada
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Patent number: 6001544Abstract: Disclosed is a method for forming a color image which comprises color development processing a silver halide color photographic material with an alkaline processing solution substantially free of a color-forming developing agent by using a coating apparatus comprising a plurality of nozzle pores for coating by jetting droplets of the processing solution, wherein three droplets in contiguous to each other jetted from the nozzle pores are coated so as not to leave space among the three droplets coated on said photographic material, wherein said photographic material comprises a support having provided thereon at least one photographic constituting layer, said at least one photographic constituting layer containing at least one dye-forming coupler and at least one color-forming reducing agent selected from the group consisting of color-forming reducing agents represented by formulas (I), (II) and (III) defined in the specification.Type: GrantFiled: September 29, 1998Date of Patent: December 14, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Toshiyuki Makuta, Kazuo Sanada, Tsutomu Takatsuka
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Patent number: 5981042Abstract: An information recording medium has a semiconductor layer and a ferroelectric layer formed thereon. Information is recorded on the recording medium by locally applying an electric voltage modulated according to the information to the recording medium and then removing it therefrom so that the ferroelectric layer is polarized by an electric charge produced by application of the electric voltage. The electric charge is caused to stay on the surface of the ferroelectric layer for at least 0.1 msec after removal of the electric voltage.Type: GrantFiled: May 7, 1997Date of Patent: November 9, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Ryoichi Yamamoto, Shizuo Umemura, Kazuo Sanada
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Patent number: 5960224Abstract: An image forming apparatus including an inject or disposed opposite the transfer path of an image recording material and injecting an image forming solvent toward the image recording material, and a guide member having suction holes for suction, disposed opposite the injector with respect to the transfer path for the image recording material and guiding the image recording material by sucking through the sucking holes. Accordingly, since the guide member guides the image recording material by sucking through suction holes, a clearance between the injector and the image recording material is kept constant during injection of the image forming solvent, so that the image forming solvent can be applied to the image recording material uniformly.Type: GrantFiled: December 23, 1997Date of Patent: September 28, 1999Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuo Sanada, Tsutomu Takatsuka, Toshihiko Yamada
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Patent number: 5746373Abstract: A liquid injection apparatus uniformly applies a liquid on a material at one time in the form of a line. A nozzle plate is arranged on a portion opposing a photosensitive material of an injection tank. A plurality of nozzle holes are arranged in the nozzle plate in the form of a line. Thin elastic members are arranged between the upper portions of the side walls of the injection tank and the left and right ends of the nozzle plate which are end portions of the nozzle plate in the direction in which the nozzle holes are arranged in the form of a line. In addition, an elastic adhesive is applied to bury a gap between the side wall and the elastic member. Each of the upper and lower end portions of the nozzle plate is supported by the side wall and connected to one end portion of a lever plate. The other end portion of the lever plate is adhered to the upper surface of a piezoelectric element to connect the piezoelectric element to the lever plate.Type: GrantFiled: February 21, 1996Date of Patent: May 5, 1998Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuo Sanada
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Patent number: 5686725Abstract: A method for reading of information, which comprises printing information on a metal substrate or a substrate capable of transmitting infrared rays of 2-10 .mu.m wavelength, with a marking ink containing tin oxide, indium-tin mixed oxide or a mixture of tin oxide or indium-tin mixed oxide and at least one compound selected from the group consisting of alumina, barium sulfate, silicon dioxide and calcium carbonate, as necessary coating a clear coating or a coloring ink on at least the information-printed area of the substrate, and identifying the information by the use of a CCD camera sensitive to infrared rays of 2-10 .mu.m wavelength or an infrared detector. No noise is generated even when the reflectance of a light from the substrate surface is large, and the information can be identified (read) easily.Type: GrantFiled: June 6, 1995Date of Patent: November 11, 1997Assignees: Kansai Paint Co., Ltd., Fujikura Ltd., Matsuo Sangyo Co., Ltd.Inventors: Tsutomu Maruyama, Atsushi Akiyama, Hiroyasu Matsuki, Kazuo Sanada, Sadao Chigira, Masanobu Hidaka
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Patent number: 5684522Abstract: An information recording medium has a semiconductor layer and a ferroelectric layer formed thereon. Information is recorded on the recording medium by locally applying an electric voltage modulated according to the information to the recording medium and then removing it therefrom so that the ferroelectric layer is polarized by an electric charge produced by application of the electric voltage. The electric charge is caused to stay on the surface of the ferroelectric layer for at least 0.1 msec after removal of the electric voltage.Type: GrantFiled: March 2, 1994Date of Patent: November 4, 1997Assignee: Fuji Photo Film Co., Ltd.Inventors: Ryoichi Yamamoto, Shizuo Umemura, Kazuo Sanada
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Patent number: 5574530Abstract: A device for applying a solvent for forming an image includes: a spray tank in which a solvent for forming an image is filled; a nozzle which is disposed at the spray tank and at which a plurality of nozzle holes which spray the solvent for forming an image are arranged so as to be aligned linearly at fixed intervals along a direction intersecting a conveying direction of an image recording material; and an actuator which displaces the nozzle toward the image recording material on a conveying path. Because the plurality of nozzle holes are arranged so as to be aligned linearly at fixed intervals, there is no dispersion in positions at which droplets of the solvent for forming an image land on an application surface. Accordingly, uniformity on the application surface of the solvent for forming an image is not impeded due to such dispersion.Type: GrantFiled: June 7, 1995Date of Patent: November 12, 1996Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuo Sanada
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Patent number: 5547501Abstract: Information is printed on the surface of a substrate with a marking ink containing a mixture of an indium-tin mixed oxide and at least one compound selected from the group consisting of alumina, barium sulfate, silicon dioxide and calcium carbonate, to prepare an invisible marking-printed material; and infrared rays of 2-10 .mu.m wavelength are applied onto the invisible marking-printed material to measure the infrared absorptivities of the invisible marking area and other area of said material and identify the information signified by the invisible marking.Type: GrantFiled: May 5, 1995Date of Patent: August 20, 1996Assignees: Kansai Paint Co., Ltd., Fujikura Ltd., Matsuo Sangyo Co., Ltd.Inventors: Tsutomu Maruyama, Atsushi Akiyama, Kazuo Sanada, Sadao Chigira, Masanobu Hidaka
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Patent number: 5418029Abstract: An information recording medium comprises a semiconductor layer and a layer of a ferroelectric substance overlaid on the semiconductor layer, information being recorded by means of directions of polarization of the ferroelectric substance. The ferroelectric substance is an organic ferroelectric substance, such that recorded information may not be lost during its reproduction and a sufficiently high level of a reproduced signal may be obtained.Type: GrantFiled: January 28, 1993Date of Patent: May 23, 1995Assignee: Fuji Photo Film Co., Ltd.Inventors: Ryoichi Yamamoto, Shizuo Umemura, Kazuo Sanada