Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 4978988 | Focus detection apparatus of camera In the present apparatus, a field mask is arranged at the predetermined focal plane of a photographic lens of a camera. This mask is formed with central rectangular opening horizontally and a pair of side rectangular openings vertically extending. Light b... | 12/18/1990 |
| 4973541 | Electrostatic latent image developer comprising capsule toner of irregular shape, wrinkled surface The present invention provides a developer for developing electrostatic latent image which comprises capsule toners and carriers; said capsule toner having many wrinkles or hollows and upheavals and containing liquid in a shell, and the carriers have no s... | 11/27/1990 |
| 4928145 | Developing apparatus having a bucket roller with movable buckets The disclosure relates to a developing apparatus having a developing sleeve for making a latent image visible and a bucket roller for supplying developer to the developing sleeve including a plurality of buckets provided on the circumferential surface of ... | 05/22/1990 |
| 4866472 | Sheet transport apparatus A transport apparatus for successively transporting a plurality of sheet media having different lengths from a first processing station to a second processing station. The apparatus comprises, as main components thereof, a tray disposed between the first ... | 09/12/1989 |
| 4864349 | Developing apparatus A developing apparatus in which first to third transport passages are provided at the back of a developing section and developing material exceeding transport capacity of the first transport passage is fed to the second transport passage, while the excess... | 09/05/1989 |
| 4864341 | Mount arrangement and interchangeable lens unit for photographic camera A mount arrangement for a photographic camera which is capable of automatic diaphragm control and automatic focusing includes electrical contacts for transmission of electrical signals between a camera body and an interchangeable lens unit, and mechanical... | 09/05/1989 |
| 4855768 | Digital printing apparatus The digital printing apparatus of this invention including ink retaining member of which the surface has a multiplicity of minute ink-wettable dot surfaces being formed as arranged with a fixed pitch in the direction of width of the recording paper. These... | 08/08/1989 |
| 4847643 | Laser printing system A laser printing system including a main body having a photosensitive member and an optical unit for forming an image on the photosensitive member by projecting a laser beam thereon. The optical unit is detachably provided in said main body and has a lase... | 07/11/1989 |
| 4802738 | Intermediate optical device A converter lens interposed between a camera body and an interchangeable lens and having an engagement means at each of the front and rear ends thereof to prevent interconnection with another converter lens. The interconnection of converter lenses are pre... | 02/07/1989 |
| 4792823 | Camera and camera system A camera or camera system includes a depth of field preview device for stopping down an aperture of an objective lens mounted on the camera to a predetermined aperture value in response to a manual operation prior to its photographing operation, and an AE... | 12/20/1988 |
| 4763987 | Lens barrel A lens barrel has a lens barrel body, a movable lens unit accommodated in the lens barrel body and movable in a direction of an optical axis, a moving operational mechanism for moving the movable lens unit and a handling load change mechanism provided bet... | 08/16/1988 |
| 4736219 | Camera with a lens cover A camera having a lens cover is provided, at its one end portion, with a projecting portion which assists gripping of the camera. The lens cover is laterally slided to cover and uncover a front surface of an objective lens and is provided, on its front su... | 04/05/1988 |
| 4729644 | Zoom lens assembly An interchangeable zoom lens assembly in which a part of the zooming lens groups is commonly used for focusing includes a stationary barrel to be mounted on a camera body, a cam ring fitted over or inside the stationary barrel, a manually operable zooming... | 03/08/1988 |
| 4724448 | Fixed-focus amphibious camera A fixed focus amphibian camera comprises a foremost element of a taking lens group on a water tight camera body. The foremost element has a concave shaped surface on its front side. When the camera is used in water the refractive power of the concave shap... | 02/09/1988 |
| 4690537 | Lens Barrel An automatic focusing camera includes a camera body and an interchangeable objective lens. The camera body includes a detector device exposed to the object image and a circuit providing a signal of a value in accordance with the detector device sensed dif... | 09/01/1987 |
| 4690878 | Battery power detector for sensing presence of batteries This invention is directed to a power supplier for use, for example, in a portable camera which includes a battery housing for accommodating a set of cylindrical batteries in parallel relationship with each other, and a battery door which is connected to ... | 09/01/1987 |
| 4687266 | Electrical connecting terminal A frame member is bonded on a base plate having a plurality of electrical contacts thereon. The frame member includes a plurality of apertures corresponding to the electrical contacts. Bonding means bonding the frame member on the base plate is formed by ... | 08/18/1987 |
| 4485760 | Dry process developing method and device employed therefor A dry process developing method for application to electrophotography which includes the steps of mixing magnetizable toner and electrically insulating non-magnetizable toner at a predetermined ratio to form developing material, and applying said developi... | 12/04/1984 |
| 4426433 | Electrophotographic developer composition of improved resistance to potential decay A developer for use in developing an electrostatic latent image according to electrography comprises a mixture of a carrier and a toner having a property of being triboelectrically charged to a positive polarity when held in frictional contact with the ca... | 01/17/1984 |
| 4419001 | Motor driven film wind-up and rewind device for cameras A motor driven film wind-up and rewind device for cameras is automatically switched from a film wind-up mode to a film rewind mode when the entire length of an unexposed film has been wound on a film take-up spool and surely remains in the film rewind mod... | 12/06/1983 |
| 4397936 | Method of fixing developed electrophotographic images uses oil absorbing smoothing roller A fixing apparatus for use in a copying machine and the like which includes upper and lower fixing rollers suitably heated and contacting each other for simultaneous rotation to define a path between them through which copy paper sheets to be fixed pass, ... | 08/09/1983 |
| 4353648 | Copy paper separating method for use in electrophotographic copying apparatus A copy paper separating method for use in an electrophotographic copying apparatus which forms a latent electrostatic image on a recording member is provided. The method includes the step of depositing fine particles having insulating properties and charg... | 10/12/1982 |
| 4334497 | Magnetic brush developing apparatus The present invention provides a magnetic brush developing apparatus for developing latent electrostatic images with a particulate magnetic developer which comprises: (a) a rotatable non-magnetic developing sleeve, (b) first drive means connected to said sleev... | 06/15/1982 |
| 4331757 | Dry process developing method and device employed therefore A dry process developing method for application to electrophotography which includes the steps of mixing magnetizable toner and electrically insulating non-magnetizable toner in a predetermined ratio to form developing material, and applying said developi... | 05/25/1982 |
| 4300825 | Control of shutter closing for excessive object brightness In a camera shutter control system, film exposure is ensured even when object brightness is so high as to require a shutter speed faster than the maximum shutter speed available and at which shutter operation might not cause film exposure without the pres... | 11/17/1981 |
| 4301228 | Electrographic developing material and developing method employing said developing material A developing material for use in electrography which includes electrically insulative toner particles mainly composed of coloring material, dye and thermoplastic resin, carrier particles arranged to be triboelectrically charged to the polarity opposite to... | 11/17/1981 |
| 4288518 | Electrographic magnetic developing method A method of developing latent electrostatic images comprising the steps of stirring a developer containing toner particles and carrier granules to triboelectrically charge the toner particles to a polarity suitable for developing a latent electrostatic im... | 09/08/1981 |
| 4273848 | Oriented magnetic toner A particulate magnetic toner for use in a process for developing latent electrostatic images to toner images with a magnetic brush consists predominantly of a magnetic material and a resin of insulating properties. Each toner particle has a portion contai... | 06/16/1981 |
| 4269920 | Dry process developing material for electrophotography A developing material for use in a dry developing electrophotography process which comprises an electrically insulating magnetizable toner including at least resin and magnetizable fine particles, and fine particles of resin different from the electricall... | 05/26/1981 |
| 4267245 | Method of removing foreign materials from magnetic developers A method of removing foreign materials from developers characterized by intermittently supplying a magnetic developer to the peripheral surface of a nonmagnetic sleeve provided with a rotatable magnet roller in its interior, while recovering, at a positio... | 05/12/1981 |
| 4262076 | Method for manufacturing magnetically attractive toner particles and particle A method for manufacturing magnetically attractive toner particles utilized for developing electrostatic latent images includes a first step of thermally kneading a mixture of a first resin material and minute particles of magnetizable material, and a sec... | 04/14/1981 |
| 4254203 | Dry process developing method employing magnetic toner A dry process developing method which comprises: (a) preparing main particles comprising a highly insulating resin and magnetizable fine particles, with part of the magnetizable fine particles being exposed through the surfaces of the main particles, (b) prepa... | 03/03/1981 |
| 4254204 | Magnetic brush electrographic developing method An electrographic developing method for developing a latent electrostatic image on a support to a toner image by brushing the image bearing surface of the support with a magnetic brush comprising a magnetic toner which comprises core particles having a lo... | 03/03/1981 |
| 4218120 | Electrochromic light regulator An electrochromic light regulator for adjusting or regulating the amount of light passing therethrough comprises first, second and third electrode units stacked one above the other in spaced manner. A space between each adjacent two of the first to third ... | 08/19/1980 |
| 4142889 | Electrophotographic process using a cadmium sulfide photoconductor having hystereses character In an electrophotographic process in which a photosensitive member such as CdS.nCdCO3 -resin photosensitive member having peculiar hysteresis characteristics is sequentially subjected to pre-charging step, hysteresis charging step, hysteresis e... | 03/06/1979 |
| 4136944 | Liquid type developing apparatus A liquid type developing apparatus includes a developing liquid chamber containing a developing liquid comprised of toner and an organic solution. A recording sheet having an electrostatic latent image on its surface passes between a pair of upper and low... | 01/30/1979 |
| 4125362 | Heat roller and toner image fixing device made therewith A thermal fixing device which includes a heat roller which is positioned to contact a toner image-bearing surface of a copy sheet in order to completely fix the already preliminarily fixed toner image as the copy sheet moves through the thermal fixing dev... | 11/14/1978 |
| 4124276 | Soft focus lens system A variable soft focus lens system particularly adapted for photography is provided. The soft focus lens system includes at least two lens groups defining a meniscus shaped air space there between. The relative width of the air space can be variable by mov... | 11/07/1978 |
| 4118723 | Camera indicating means Disclosed are exposure data indicating means for an exchangeable lens type camera which is selectively settable for operation in either a diaphragm priority automatic shutter speed control mode or a shutter speed priority automatic diaphragm control mode ... | 10/03/1978 |
| 4113375 | Power regulating device for controlling exposing means and fixing means in electrophotographic copying apparatus The power regulator of the present disclosure is operated by a source of D.C. power for controlling the A.C. power to be supplied to an exposing device and to a fixing device. It comprises a first circuit for operating the exposing device, a second circui... | 09/12/1978 |
