| Patent Number |
Title Of Patent |
Date Issued |
| 4081805 |
Apparatus for displaying the amount of exposure in a single lens reflex camera using an electron |
March 28, 1978 |
| An apparatus for displaying the amount of exposure in a single lens reflex camera using an electronic shutter in which the shutter speed can be established either automatically or manually and can be displayed in a digital manner. When the shutter speed is manually established, the a |
| 4081391 |
Liquid developer for use in electrophotography |
March 28, 1978 |
| This invention provides a liquid developer for use in electrophotography which comprises a dispersion of toner particles in a carrier liquid having a high resistivity and a low dielectric constant and is superior in fixability, dispersion stability and redispersability, said toner pa |
| 4075607 |
System for collecting data from meters placed at remote places |
February 21, 1978 |
| A data collection system wherein a central or data collection station is interconnected through data transmission lines with a plurality of meters or terminal stations at remote places and prior to the data reading operation a high-level voltage is applied from the central station to |
| 4074934 |
Electrostatographic imaging method and apparatus for multiple copies |
February 21, 1978 |
| A plurality of images of the same original document are formed at equal spacing on the circumference of a photoconductive drum. After all of the images are completely formed, the images are developed a number of times, and the resulting toner images are transferred to copy sheets after e |
| 4061330 |
Sheet separator for use in electrophotographic copying machines |
December 6, 1977 |
| A sheet separator separates a copy sheet held attracted to the surface of a rotating photosensitive member by the use of a suction member pivotably disposed at a sheet separating position. The suction member includes an air suction port in its surface which is located opposite the ph |
| 4061328 |
Paper feeder |
December 6, 1977 |
| A paper feeder is disclosed comprising a corner separator located on a paper tray on which a plurality of sheets are disposed in a stack and are fed one by one by means of a feed roller. The paper feeder is also provided with a second paper separator which operates, in the event of f |
| 4060493 |
Liquid electrostatic developer |
November 29, 1977 |
| Liquid electrostatic developer having pigment or dyestuff dispersed in a non-aqueous dispersion containing a graftcopolymer and at least one substance selected from the group consisting of polyethylene, polyethylene wax and paraffin wax in a liquid carrier having a high resistivity and a |
| 4059345 |
Fixture for mounting bar lens array in electrophotographic apparatus |
November 22, 1977 |
| A bar lens array is mounted between an original document and a photoconductive member in such a manner that the ends of the bar lenses are equally spaced from the document and photoconductive member regardless of manufacturing differences in the length of the bar lenses of the array. |
| 4059262 |
Sheet delivery apparatus |
November 22, 1977 |
| A sheet delivery apparatus includes a sheet delivering revolving member in abutting relationship with a sheet separating member, which members cooperate to deliver the lowermost one of sheets in a stack through a nip therebetween while maintaining the forward edge face of the sheets in a |
| 4057243 |
Sheet feed termination detector |
November 8, 1977 |
| A sheet feed apparatus feeds sheets, placed on a sheet receptacle, one by one toward a sheet processor. When the sheets on the receptacle are exhausted, the operation of the apparatus is interrupted by a signal from a signal emitter which operates to detect the termination of sheet d |
| 4055421 |
Sensitizer for photoconductive sensitive material |
October 25, 1977 |
| The present invention provides 1,3,7-trinitrophenazine-5-oxide which has an excellent sensitization effect on organic photoconductors, as well as a photoconductive sensitive material comprising said compound and an organic photoconductor. |
| 4053930 |
Method and device for coding compressing video information |
October 11, 1977 |
| A method and device for compressing run-length codes by inserting discrimination bits which discriminate the run-length codes of black elementary areas from those of white elementary areas, where said discrimination bits are weighted as in the case of the bits of the run-length codes |
| 4053831 |
Waveform analysis system |
October 11, 1977 |
| An address counter sequentially addresses locations in a shift register or random access memory in which a waveform is stored in digital form to display the waveform on a cathode ray tube. Several magnification ranges are provided so that a selected portion of the waveform may be viewed |
| 4052959 |
Electrophotographic apparatus |
October 11, 1977 |
| A roller is rotatable so that its surface moves in a direction opposite to a photoconductive drum to remove excess liquid developer from the drum. Rolling contact bearings are mounted on opposite ends of a shaft supporting the roller and have a diameter which is slightly larger than |
| 4052127 |
Developing system |
October 4, 1977 |
| A developing system is provided for a copying process such as an electrophotographic copying process in which a developer is supplied to the surface of a member which is formed with an electrostatic latent image to provide developing thereof. An electrode is disposed opposite the sur |
| 4051537 |
Facsimile receiving apparatus |
September 27, 1977 |
| A drum speed synchronization signal is transmitted for a predetermined length of time followed by a picture signal. Timing means are arranged to be triggered upon initiation of the synchronization signal to enable a drum speed synchronizer to receive the synchronization signal for a peri |
| 4050812 |
Light shield curtain assembly for reciprocating optical scanning head |
September 27, 1977 |
| First and second rollers extend perpendicular to the direction of reciprocation of the scanning head and are disposed on opposite sides of the scanning head in said direction. First and second curtains are fixed at first ends to the first and second rollers respectively and at second |
| 4050806 |
Method and apparatus for electrically biasing developing electrode of electrophotographic device |
September 27, 1977 |
| A photoconductive member is charged and radiated with a light image to produce an electrostatic image. Sensing electrodes automatically sense the remaining potential in a portion of the electrostatic image corresponding to a background area of the original document scanned to produce the |
| 4050165 |
Teacher-students' intercommunication system |
September 27, 1977 |
| An intercommunication system in a group teaching or training system in which a teacher station and a plurality of student stations are interconnected with a common outgoing line and a common incoming line, and each station includes a transmitter and a receiver, and wherein the teache |
| 4047230 |
Method and apparatus for transferring magnetic signal from a master sheet to copy sheets |
September 6, 1977 |
| A master sheet is coated with a magnetic layer carrying magnetic signals in, for example, a spiral magnetic recording track, and is pressed into contact with a copy sheet which is also coated with a magnetic layer. A magnetic field is applied to the sheets to transfer the magnetic signal |
| 4044384 |
Optical scanning apparatus |
August 23, 1977 |
| A scan line of an original document is divided into first and second halves, and first and second optical systems focus first and second images of the first and second halves onto a linear array of photosensitive elements such as photodiodes. The first and second images are each coex |
| 4039919 |
Multi-phase motor controller |
August 2, 1977 |
| A disc rotatable with the motor shaft has circumferentially equally spaced slots formed therethrough. A light source and receiver assembly are operatively arranged relative to the slots to produce pulses representing a predetermined angular displacement of the motor shaft determined by t |
| 4035815 |
Display unit for luminous data of a single lens reflex camera |
July 12, 1977 |
| A display object illumination or unit for displaying luminous data is provided, wherein the data is retained in a memory circuit upon completion of the photometry operation in a single lens reflex camera, which is adapted to determine the exposure factors automatically to permit taking |
| 4035772 |
Utility meter reading system |
July 12, 1977 |
| A number of remote terminals are connected to various utility meters to store the readings therein. A central terminal sequentially transmits signals to the remote terminals to actuate the same to transmit the meter readings to the central terminal. Each remote terminal comprises storage |
| 4034380 |
Ink ejection apparatus for printer |
July 5, 1977 |
| Ink is fed into an ink chamber in an ink ejection head. An ejection orifice communicates with the ink chamber. An electrostrictive plate defines a surface of the ink chamber and is strained to decrease the volume of the ink chamber when an electrical pulse is applied thereto to cause ink |
| 4033575 |
Automatic sheet feed and delivery apparatus |
July 5, 1977 |
| An apparatus is disclosed for automatically wrapping an original to be transmitted, or a record sheet for receiving a signal, around a drum of a facsimile system or the like and for automatically delivering the sheet from the drum subsequent to the completion of processing of the sheet s |
| 4027314 |
Shutter and low-light indicator actuating device for a camera |
May 31, 1977 |
| Voltage comparators for actuating a camera shutter and a low-light indicating lamp respectively have inputs connected to junctions between photocells and resistors so as to be controlled in response to the light level. The voltage comparator for the low-light indicator energizes the |
| 4026647 |
Copy sheet feed device |
May 31, 1977 |
| A device comprising detection means disposed in a predetermined position on the path of movement of an original scanning system in an electrophotographic copying apparatus for detecting the movement of the original scanning system and producing a signal to actuate a copy sheet feed m |
| 4026634 |
Directional light transmitting screen |
May 31, 1977 |
| A light transmitting screen capable of directing and focusing light images falling thereon, comprising a plurality of lens systems, each having a particular optical axis, making up the screen elements and each of which transmits parallel light rays incident thereon such that the light ra |
| 4025958 |
Jitter prevention system for video signal processing |
May 24, 1977 |
| Video signals are transferred from a phonograph record or low speed magnetic tape and stored on a magnetic sheet disc rotating at low speed. The magnetic sheet disc is then rotated at high speed to output the video signals to a television display or the like. In the invention, clock |
| 4025932 |
Data recording system for camera |
May 24, 1977 |
| Data such as the place and time a picture is taken are written on a tape in a data capsule which is detachably mounted in the camera body. A light source and an optical system are mounted in a hollow tube which is movable along the tape to scan the data and project the data onto an edge |
| 4025184 |
Developing electrode contamination prevention system for electrophotography |
May 24, 1977 |
| A photoconductive drum has an image portion and a non-image portion. A biasing voltage is applied to a developing electrode when the image portion of the drum is adjacent thereto. The developing electrode is grounded when the non-image portion of the drum is adjacent thereto to preve |
| 4025066 |
Sheet feed device for a facsimile system |
May 24, 1977 |
| Improvements in a sheet feed device for a facsimile system for selectively supplying an original copy and a recording sheet to the rotating drum. A cassette adapted to be placed on a cassette table comprises two trays adapted to move relative to each other, one tray for supporting thereo |
| 4023899 |
Excess developing liquid removing device for electrophotography |
May 17, 1977 |
| A roller is disposed parallel and adjacent to a photoconductive drum with a small gap inbetween. The roller is made of an electrically conductive material and covered with an insulating coating of hard anodized aluminum. The roller is fixed to a shaft which is driven to rotate the roller |
| 4022738 |
Developing powder |
May 10, 1977 |
| Developing powder, called the toner, for use in developing an electrostatic latent image or a magnetic latent image, said developing powder consisting essentially of a mixture of low molecular polyolefins and alkyl-modified phenol resins, the developed image being firmly fixed to an imag |
| 4019646 |
Cap with inside stopper for receptacle |
April 26, 1977 |
| A cap for receptacles provided with an inside stopper, wherein the inside of the side-wall of the cap is threaded so as to fit on the threaded side-wall of the opening of the receptacle and the inside stopper is provided with a side-wall whose outside diameter is equal to or slightly |
| 4019024 |
Roller for fixing electrophotographic toner images and method of producing the same |
April 19, 1977 |
| An image fixing roller having a comparatively long service life and tending to resist the so-called "offset phenomenon" in which portions of the toner image on one sheet adhere to the roller and are transferred onto the next sheet bearing a toner image. The roller has a radially outer la |
| 4018154 |
Printing apparatus for cash register |
April 19, 1977 |
| Printing apparatus particularly suited to a cash register includes a hammer arranged to move printing paper into engagement with type wheels located on the other side of the paper. A cam and linkage move the hammer into and out of contact with the paper. Strong springs are provided to ra |
| 4015274 |
Memory device of an electrical shutter for single lens reflex camera |
March 29, 1977 |
| A memory device is provided for storing a photometric quantity that is sensed and photoelectrically converted, by a light receiving element disposed in the light path of the finder of a single lens reflex camera, and used for determining a shutter speed or exposure time, which device |
| 4013871 |
Image fixing roll for electrophotography |
March 22, 1977 |
| A roll for fixing a toner image formed on a support sheet in electrophotography comprising a plurality of layers made of a resilient material and arranged around a core disposed about the center axis of the roll. The resilient material layer disposed nearer to the core is electricall |
| 4010364 |
Optical scanning system |
March 1, 1977 |
| A document to be scanned is placed on a fixed transparent cylindrical platen and a mirror is totatable about the axis of the platen. A linear or single line cathode ray tube is fixed in position to produce a light beam which is reflected from the mirror onto the document and moves along |
| 4009957 |
Copy paper feed system |
March 1, 1977 |
| As a scanning element of an electrophotographic copying machine begins to move, a feed roller moves a sheet of copy paper into the bite of register rollers which are held stationary. This movement of the copy paper is accomplished in a period of time which is less than that required for |
| 4008662 |
Printer ribbon drive apparatus |
February 22, 1977 |
| A hammer is movable to strike paper against a rotatable type member through a ribbon for printing. The hammer is moved for printing by a rotary shaft formed with a projection which engages with the hammer upon rotation of the shaft. A rockable ribbon guide holds the ribbon which has uppe |
| 4007044 |
Color electrophotographic process |
February 8, 1977 |
| An overcoated photoconductive material is uniformly illuminated in the presence of an electric field to create persistent internal polarization. Minute, translucent toner particles are then applied onto the surface of the photoconductive member, and a colored light image is projected ont |
| 4004354 |
Group response analyzing system |
January 25, 1977 |
| In a group response analyzing system of the type comprising a central console for a questioner and a plurality of response or terminal consoles for questionees intercommunicated with the central console so that the responses may be automatically collected from the response consoles and |
| 4003570 |
Conveyor for transfer sheet fixing apparatus |
January 18, 1977 |
| A table is detachably mounted to a fixing apparatus adjacent to and aligned with an inlet opening thereof. The table is formed with a longitudinal slot through which a pusher member vertically extends. A transfer sheet is placed on the table, and drive means reciprocally move the pusher |
| 4003063 |
Power supply regulator for an automatic exposure adjusting circuit for use in a camera |
January 11, 1977 |
| An automatic exposure adjusting circuit for use in a camera which permits the power to be supplied to several groups of circuits having different operation initiating and terminating times, only during their respective operative intervals. The invention also includes means for preventing |
| 4000371 |
Facsimile transmission method and system |
December 28, 1976 |
| Two facsimile devices, each capable of operating in a plurality of communication modes and having at least one common communication mode are connected together by a telephone line. One of the devices sends to the other a plurality of low and high group frequency signals arranged in a |
| 3998497 |
Guide rod apparatus |
December 21, 1976 |
| First and second horizontally disposed parallel guide rods are provided to guide an object. First and second roller assemblies are fixed to the object and rollingly connect the object to the first guide rod and a third roller assembly fixed to the other side of the object rollingly conne |
| 3997829 |
Multi-phase stepping motor controller |
December 14, 1976 |
| A disc rotatable with the motor shaft has circumferentially equally spaced slots formed therethrough between the motor step positions. A light source and receiver assembly are operatively arranged relative to the slots to produce position pulses when the motor shaft is positioned between |
