Abstract: A document feeding apparatus having a conveyor belt which moves documents along a platen glass plate of a photoreproducing machine, first and second rollers which support the conveyor belt, a driving source connected to the first roller, and a member for driving the second roller so that it prevents the conveyor belt from slackening. In preferred forms of the device, the first roller is connected to the second roller by a one-way clutch and the line speed of the first or second roller on the document feed side is greater than the line speed of the first or second roller on the discharge side.

Abstract: For use in a photocopying machine, an apparatus for making punch holes in and stapling recording sheets comprising, a first conveyer by which the recording sheets are conveyed to a sheet stacker which is capable of setting the recording sheets at a predetermined position for sheet processing, a sheet processor which has a hole puncher and a stapler by which the recording sheets are processed to have punch holes or to be stapled, or both, in which the hole puncher is provided with an angled panel attached below a die of the hole puncher so that paper pieces punched from punch holes are received without clogging into a container for disposal, and a second conveyer by which the processed sheets are conveyed to a sheet receiving tray.

Abstract: An automatic document conveyer for respectively conveying documents to a position for copying by a copy machine. The document conveyer has a document holder where the documents are set to be conveyed a first document conveyer which conveys the bottom document into a second document conveyer. The second document conveyer has pressure rollers which provides a flat area along with a conveyance belt to hold the conveyed document at a predetermined position beyond the first pressure roller of the pressure rollers so that the conveyed document of a different size is under the pressure of the second conveyer. The document conveyer also has a document turn-over mechanism to which the conveyed document is conveyed by the second document conveyer in the reversible direction in order to be turned over without a copying process, and the conveyed document is turned back to the predetermined position and further to the position for copying.

Abstract: A document feeding apparatus wherein a member for regulating the rear end of a document is provided movably in non-stepped manner substantially in a document feeding direction at the back of a document stacker having a paper feeding unit at the forward portion thereof. The movement of the rear end regulating member is controlled by a control device. A movable paper discharging device is provided. The movable paper discharging device has a discharging member, which is trained so as to surround the rear end portion of the document stacker in the shape of letter "C".

Abstract: An electrophotographic copying apparatus has increased speed in recording sheet conveyance where the conveying path from the sheet feed cassette to the photosensitive member is relatively long. The sheet conveyance apparatus is constructed to equalize the line speed of the photosensitive member, the feed speed of the recording sheet and the conveying speed of the recording sheet. A plurality of sheets serially fed out from a sheet tray are concurrently transported along the sheet path. A sheet is fed out from the sheet tray in response to a timing reference signal generated in response to the scanning operation for a previously fed out sheet.

Abstract: A reproducing machine with a document feeding apparatus in which a document on a document stacker can be fed repeatedly after it is returned to the document stacker through a document feeding portion and a processing unit, and a feeding speed of the document can be varied by a control device. The feeding speed of the document when a single copy is required and the feeding speed of the document in a first cycle of copying when plural copies are required are set slower than that of the document in following cycles when plural copies are required in which the speed is set to a value as high as the processing power of the reproduction machine.

Abstract: A document feeding apparatus having both an automatic and manual feed mode. the apparatus includes a paper feeding belt for feeding documents from a stack set on a document stacker, wherein the lowermost document in the stack is fed, and a stop roller placed in contact with an upper surface of the paper feeding belt to prevent the overlapped feed of documents. Documents are fed through a common paper path in both modes. The belt and roller are commonly used in both the automatic and manual document feed modes. In the automatic document feed mode, the belt is driven while the roller is held in a non-rotational state. In the manual document feed mode, the belt is driven and the roller is driven by the belt.

Abstract: A document feeding apparatus wherein a document is separated one by one and fed onto a platen glass and subjected to exposure the outside of the document to light, and thereafter the surface of the document is reversed by a reversible rotational mechanism and again moved onto the platen glass to expose the inside of the document.

Abstract: A copy paper processing apparatus wherein a set of copy papers supplied sheet by sheet from the outside while overlaying them are selectively punched by a puncher and stapled by a stapler and punch pins of the puncher are pulled out after the stapling operation is ended.

Abstract: A document feeding apparatus wherein documents are fed one by one from a document stacker by a first document feeding device and a second document feeding device which is provided in the midway of a path from the first document feeding device to a processing unit, and the movement of the document is stopped temporarily by a document stopping device before the leading end of the document fed from the second document feeding device reaches a synchronous sensor provided in the midway of a path from the second document feeding device to the processing unit. The first document feeding device consists of a feeding belt connected to a drive source through an electromagnetic clutch, and a separating roller which is in sliding contact with an upper surface of the feeding belt in a non-rotary state. The second document feeding device consists of a drive roller connected to a drive source through an electromagnetic clutch, and a driven roller which is press contact with the drive roller.

Abstract: In a sorting machine designed for use with a copying machine capable of handling paper of various sizes, a vertical array of sorting bins includes an uppermost sorting bin with an expandable surface area. This allows the sorting machine to handle extraordinarily large paper without increasing the footprint of the sorting machine. The uppermost position ensures that when expanded, the expandable sorting bin will stand over the copying machine, which does not normally need great overhead clearance. The expandable sorting bin may be expandable by virtue of a hinged, sliding or detachable extension plate, and may be expanded automatically when the copying machine detects and signals the use of larger paper. Multiple expandable sorting bins may be used for sorting the extra-large paper. In addition, the sorting machine may have one normal-sized sorting bin in alignment with a main receiving tray of the copying machine so as to allow the main tray to accommodate extra-large paper.

Abstract: In an electrophotographic copying apparatus in which the photosensitive drum and associated image forming, developing and cleaning devices are all supported in a subframe movable into and out of a main frame which carries the copy plate and associated optical system, the main power source and the primary paper feeding cassette, paper feeding device in the form of register rollers timed with the operation of the drum, are mounted on the subframe and are adapted to receive paper from the cassette when the subframe is positioned within the main frame and the drum and other operating devices are connected to the main power source.

Abstract: The slit exposure optical system for a copying machine generally includes two mirror-carrying movable tables of which one is driven at half the speed of the other. Normally each table is driven from one and the same end which means that the other end of each table must follow. If such following is not precise, aberrations in the optical system result. The present invention provides means for interconnecting the nondriver ends of the tables in such a manner that the movement of the nondriver ends will precisely follow the movement of the driver ends and aberrations are thereby avoided.

Abstract: In an electrostatic image reproducing system, the developing unit or cleaning unit comprises a first magnetic brush having a first revolving element which revolves on a first revolving axis, and a plurality of magnets inside the first revolving element. The first revolving element is adjacent to an image recording body and confronts the image recording area of the image recording body. A second magnetic brush unit is axially adjacent to the first magnetic brush unit for attracting and transferring developer, the second magnetic brush unit including a second revolving element having a second revolving axis therein which is substantially colinear with the first revolving axis. The second magnetic brush unit does not confront the image recording area of the image recording body.

Abstract: An electrostatic image reproducing system includes a developing unit, a rotatable photosensitive drum, a cleaning unit, and a developer recovering device for recycling developer containing a magnetic ingredient from the cleaning unit to the developing unit.The developer recovering device includes a developer conveying device including a revolving element made of a non-magnetic material and having an outer surface, and a plurality of magnets arranged adjacent the inner surface of the circumference of the revolving element, and a casing encircling at least a portion of the outer surface of the revolving element with a given spacing therebetween for receiving developer containing the magnetic ingredient. The revolving element is arranged to pick up developer from the casing by the magnetic power of the magnets, and the picked up developer is conveyed to the developing unit by the revolving element as ears of developer on the revolving element.

Abstract: A toner recovery device having a non-magnetic rotary member, magnets embedded around the circumferential surface of said non-magnetic rotary member, and an endless belt wound on said rotary member so as to recover a toner collected by a cleaning device into a developing unit. A plurality of protuberances are equidistantly and projectingly formed around the circumferential surface of said rotary member to prevent said endless belt from floating as a whole. The protuberances drive said endless belt.

Abstract: In an electrostatic recording apparatus means are provided for precisely mounting various components or processing units about the photosensitive drum. In particular, a subassembly detachably connected to the apparatus supports the drum and is provided with fixed supports to which the processing units such as the charging electrode, developing device, image transfer electrode, etc. are attached. The arrangement assures a precise spacing of the said units relative to the drum.

Abstract: A tennis practicing machine is disclosed which has a rotating arm for periodically projecting a tennis ball towards a player. A spring connected to the rotating arm stores a rotating force which is periodically released as the rotating arm passes a predetermined point causing ball emission. A power source control system is provided which controls rotation of the motor such that in order to insure safe operation of the machine, when the machine is turned off a ball is emitted if the rotating arm is within a predetermined range near the point of ball emission. Accordingly accidental jarring or vibration of the machine does not cause accidental emission of a ball. Also, the system provides a delay for starting emission of the ball when the machine is first turned on, and furthermore circuitry is provided to maintain a constant time period of operation regardless of power main frequencies of 50 or 60 Hz.