Abstract: In a projecting apparatus which focuses the image of an object on an intermediate mirror through a lens array and finally projects the reflected image onto a projection plane again through said lens array, a polarizing beam splitter is provided between the object plane and the lens array to reduce the light loss and to compactize the apparatus.

Abstract: The microfiche reader printer has multiple format capabilities. A lens support holding one lens for each format is slidable to position a lens into the light path. Positioning of the lens support closes or opens switches which direct a logic circuit to cause a controller to drive the microfiche holding platen in a certain manner dependent on the format. Copying utilizes a rotating xerographic drum. The platen is driven by stepper motors having a digitized sinusoidal input for microstepping drive for constant velocity drive during copying where the movements of the platen and the drum must be coordinated. The platen also takes a half frame back step before printing so that it can accelerate forward over the half step forward to reach constant velocity during scanning of the frame.

Abstract: A variable magnification optical system focusses an image of a portion of an original document on a platen through a variable aperture or slit onto a rotating photoconductive drum. Various members of the optical system or the document are moved at a speed corresponding to the surface speed of the drum to scan the document and form an electrostatic image thereof on the drum. The slit is defined by a fixed aperture plate and a movable aperture plate disposed upstream of the fixed aperture plate in the direction of rotation of the drum. A variable transmission connected between an exposure knob and the movable aperture plate transmits rotation of the knob to the movable aperture plate at a rate corresponding to the magnification. In addition, a side edge of the document is aligned at the same position for all magnifications. The movable aperture plate is formed with a curved edge facing the fixed aperture plate, the center of the curved edge being aligned with the center of the image at all magnifications.

Abstract: An electrographic apparatus which can obtain any desired number of copies of a manuscript by scanning it only one time by exposed light and which comprises a manuscript feed mechanism including upper and lower side feed mechanisms arranged above and below a manuscript feed path defined by a slit light exposure portion which projects a manuscript image therethrough, said upper side feed mechanism being movable with respect to said slit light exposure portion to define thin and thick manuscript feed paths, respectively.

Abstract: An apparatus for the recording of composite information from an original to be photocopied and a source of external information includes a position designating mechanism for indicating and distinguishing the portion of the original document to be copied from the portion to be omitted and into which position information from the external source is to be inserted.

Abstract: Improvements are provided in and relating to an electrostatic copying apparatus including a housing, a support for supporting an original to be copied, the support being mounted on the housing and having a transparent plate for supporting the original thereon and a holding member for covering the original on the transparent plate, a system for forming a copied image disposed within the housing and having an optical system for projecting the image of the original on the transparent plate, and a system for transferring a copying paper synchronously with the scanning of the original which is effected by the relative movement of the original holder and the optical system.

Abstract: An ommateal image projector of a type, in which a single or a plurality of rows of the so-called bar lenses having a longer length in the direction of its optical axis than the effective lens diameter thereof are arranged, each bar lens projecting a partial image of an object to be projected onto a mirror surface, and the partial image formed on this mirror surface forming again this partial image onto the image projecting surface by the same bar lens. The entire image of the object is formed on the projecting surface by row of the bar lenses, and the total image thus formed is an erected image.

Abstract: A projecting optical system having a first lens system, on one focal plane of which a first plane is disposed, a light beam deflector disposed on the opposite side of the first plane relative to the first lens system and to deflect light beams in a predetermined direction, and a second lens system which receives light beams from the light beam deflector and collects the same on a second plane disposed on its focal plane, wherein the first and second lens systems have one and the same distortional characteristic, the distortion to be generated in the first lens system is compensated by the distortion to be generated in the second image-forming lens system, irrespective of the deflecting action of the deflector, to thereby sequentially project the image on the first plane onto a predetermined position on the second plane.

Abstract: An illumination means for an electrographic reproduction machine in which a single light source is used in combination with a primary and a secondary elliptical reflector to furnish direct and reflected light as a narrow band of illumination and in which a third flat reflector is used to reflect a portion of the light from the light source which would not otherwise be directed in such a narrow band back into the primary and secondary reflectors to be reflected into the narrow band and to balance the direct and reflected light.

Abstract: A printing apparatus for use in the manufacture of semiconductor circuit elements, comprising a fixed mirror imaging system. A mask holder and wafer holder are respectively provided in an upper horizontal plane and a lower horizontal plane on the optical axis above and below said mirror imaging system, the light emerging from the mask being introduced into said system by a mirror inclined at 45.degree. to the optical axis while the light emerging from said system is directed to the wafer by an another mirror inclined at 45.degree. to the optical axis. The mask holder and wafer holder are integrally movable in the horizontal direction to allow formation of the entire image of mask on the wafer.

Abstract: A book type document is placed on a glass platen face down and scanned by a reciprocating optical system one or more times to produce one or more copies respectively. A retractable conveyor comprising an endless belt is moved onto the platen to automatically feed a sheet document inserted thereinto onto the platen for scanning. Where only one copy of a sheet document is required, the optical system is maintained stationary and the sheet document is fed by the conveyor over the platen at the proper speed, thus enabling rapid copying of a large number of sheet documents. The magnification is variable through adjustment of the positions of the elements of the optical system when held stationary and the speed of movement of the document by the conveyor. The conveyor feeds a sheet document onto the platen at high speed and the optical system is reciprocated to scan the document a plurality of times where a plurality of copies of the document are required.

Abstract: A copying apparatus having an optical system comprising a fixed original carriage, a rotatable mirror for scanning the original carriage and an image forming optical system for imaging a light flux from the rotatable mirror on a photosensitive medium, said image forming optical system being provided with a swing and tilting lens system having a swing and tilting function and a light path length correcting lens system including at least two movable lens groups movable along the direction of the optic axis and having the function of correcting the length of the light path while maintaining a predetermined image forming magnification, said swing and tilting lens system and said movable lens groups being moved in synchronism with said rotatable mirror to thereby form the image of the original on the photosensitive medium without swing and tilting.

Abstract: An electrophotographic apparatus for obtaining a plurality of duplicated copies based on an image-like modulating information formed on a photosensitive member by one exposure comprises a casing having a sheet document copying area and a thick document copying area, a document sensing device for sensing the presence of a document at these copying areas, and a mechanism for controlling a step of forming the image-like modulating information on the photosensitive member by a signal generated from the document sensing device when the document is present on both or one of the copying areas and a copying completion signal.

Abstract: A method and apparatus is disclosed for orientating output copies of original documents from a bidirectional copier that employs a sorter with the method including the step of initiating each odd numbered copy run of multiple originals from the same side of the platen.

Abstract: A copying apparatus capable of copying sheet originals and thick originals comprises sheet original transport means for transporting a sheet original, thick original carrier means for carrying thereon a thick original, optical means for projecting the image of an original upon a photosensitive member, copy process means for processing copies, and drive means for operating the copy process means. At least a part of the optical means is movable to selectively form an exposure surface at the position of the sheet original exposure surface of the sheet original transport means or the thick original exposure surface of the thick original carrier means.

Abstract: An electrophotographic apparatus for exposing and scanning a document placed on a fixed copy board by a scanning optical system. A sheet feed device is provided near the fixed copy board for feeding and exposing a sheet-like document. The optical system corresponding to the sheet feed device comprises at least a part of the scanning optical system.

Abstract: A copy machine having a plane stationary platen for holding an original and having also capability in facsimile transmitter and receiver is disclosed. A first scanning mirror is driven in parallel with the platen surface at the same speed as a photosensitive medium. A second scanning mirror is driven synchronously at half the speed of the first scanning mirror and in the same direction. An in-mirror lens comprises a reflex mirror and a spherical lens system and a fourth fixed reflex mirror is located on the same side of both scanning mirrors vis-a-vis the in-mirror lens. It serves to reflect an image forming beam from the in-mirror lens forwards the photosensitive medium. The facsimile function uses a beam deflector comprising an in-mirror lens, a rotary polygonal mirror and a polygonal mirror driving mechanism. This additional system is disposed at a position optically equivalent to the nodal point of half of the in-mirror lens.

Abstract: A copier including a document transporting carriage movable from a home position through a document illuminating station and back to the home position, and including instrumentalities for energizing the copier for a predetermined time interval to copy a document on the carriage is provided with timing apparatus for disabling the energizing instrumentalities. The timing apparatus includes a switch operatively connected to the energizing instrumentalities for enabling and disabling the same. The switch is normally operative for enabling the energizing instrumentalities and is actuatable to disable the instrumentalities. In addition, an actuating device cooperative with the carriage and the switch is provided for actuating the switch after a predetermined time interval if the carriage is not moved from the home position, or back to the home position, during the aforesaid predetermined time interval.

Abstract: An electrophotographic copying apparatus which includes a thin sheet original transporting device having transporting rollers and disposed adjacent to a transparent platform for holding thick originals at the upper portion of the copying apparatus, and an image forming optical system moving device for moving the optical system from a scanning starting position for thick original copying to a stationary optical system position for thin sheet original copying in association with a change-over of operation from copying a thick original to copying a thin sheet original in order to eliminate disadvantages inherent in exposures in conventional copying apparatuses, and the distance between first and second reflecting mirrors of the optical system at the scanning starting position for copying thick originals is set to be less than that when the optical system is in the stationary position for reduction of the size of the copying apparatus.

Abstract: Relative movement is effected between the original and the projection system of the copying machine, and the latter projects images of successive transverse strip-shaped sections of the original onto the recording medium. The projection system comprises a plurality of lens-row systems. Each lens-row system includes a first lens row which receives light from a strip-shaped section of the original and projects into an intermediate image plane, and a second lens row which receives light from the intermediate image plane and projects that light onto the recording medium. The lens-row systems are spaced apart in a direction transverse to the direction of elongation of the individual lens rows. The light passing through each lens-row system includes a plurality of central rays, each passing through the optical center of one lens element of the first lens row and through the optical center of the corresponding lens element of the second lens row.

Abstract: The apparatus has separate original placing stations for producing copies of an original which is bulky, as in the form of a book, and of an original which is in sheet form. In one of these two original placing stations the original remains stationary and is illuminated by a slit illuminating device which is reciprocated, while, in the other original placing station the original is moved and a slit illuminating device remains stationary to effect illumination of the original. Separate slit illuminating devices can be used for the two separate original placing stations, or a common slit illuminating device can be used for the two original placing stations. Even when separate illuminating devices are used, part of the optical system and a photosensitive member are used in common with the two stations.

Abstract: A copying apparatus comprises an original supporting carriage for supporting thereon a stationary original, original feeder for feeding an original past an exposure station first scanning optical system comprising illumination lamps, mirrors and a lens for projecting onto a photosensitive medium the image of the original resting on the original supporting carriage, and second scanning optical system comprising illumination lamps, mirrors and a lens for projecting the image of the original onto the photosensitive medium. The photosensitive medium has thereon a common image focus position for two modes effected by the first and the second scanning optical systems.

Abstract: Relative movement is effected between an original to be copied and an optical projection system. During such movement, the projection system projects the image of successive strip-shaped portions of the original onto successive strip-shaped portions of a recording medium, to form a gap-free reproduction of the original. The projection system includes a plurality of optical elements at least two of which are of positive refractive power and project an image of a strip-shaped portion of the original into an intermediate image plane and from there onto the recording medium. At least one of the optical elements of the projection system comprises an element having a lenticular layer of positive refractive power and a reflective layer combined therewith.

Abstract: Optical projection apparatus utilizing a pulley and cable mechanism for positioning optical components thereof which comprises a fixed pulley means, translatable pulley means and cable means entrained about the foregoing means. A clutch is provided to selectively preclude rotational movement of the fixed pulley means while translational movement is imparted to the translatable pulley means to thereby effect repositioning of the translatable pulley means relative to the fixed pulley means. An optical component fixed for movement with the translatable pulley means and an optical component fixed for movement with the cable can thereby be repositioned relative to each other by effecting translational movement of the translatable pulley means while simultaneously preventing rotational movement of the fixed pulley means.

Abstract: An image on an original (hereinafter referred to as an "original image") is exposed as an erect image on a photoconductive recording medium by a first optical system, and as an image by inversion (hereinafter referred to as an "inverted image") by a second optical system. The first and second optical systems are established by selectively moving a mirror lens or a prism lens, respectively, into the optical path formed between the original and the photoconductive recording medium. A charged latent image formed on the photoconductive recording medium by the inverted image exposure is developed by a toner containing a sublimable dye. The inverted image on the recording medium thus developed by the toner containing the sublimable dye is utilized as a copy master for heat transfer to another recording medium.

Abstract: A web/scroll duplex document handling system for a copier which provides document recirculation for pre-collation copying of both sides of the documents. The document is positively retained at all times by positive engagement by a document supporting web. A document is unobstructedly imaged on one side on one web, then transferred to another web while the two webs both engage the document without relative movement, and then the other side of the document is unobstructedly imaged on the other web. The two webs may be separately wound on four scrolls or a three scroll system may be provided in which one end of both webs is commonly wound on a single scroll. A set of documents are selectively wound and unwound between respective scrolls and transferred between webs to automatically provide duplex copying.

Abstract: A document recording machine of the flow camera type wherein the rotatable document carrying drum is co-axial with the film carrying capstan and having the same angular velocity, an optical reduction system having the same relative reduction as the reduction of peripheral movement of the drum and capstan and a further optical system for recording a serial number from a film carrying magazine to the film and a pivotable mirror in the further optical system is operable to alternately break the two optical paths.

Abstract: An optical system for strip scanning of an object in both directions of relative reciprocal motion between the object and the optical system. The object is first scanned in one direction, then the optical axis between object and image is effectively rotated 180.degree. for scanning in the reverse direction. Properly oriented images are thus projected onto a photoreceptor during both directions of scan.

Abstract: A compound optical system apparatus, having a main optical path with a reflector, a shutter, an objective lens, and an image-receiving surface; and an alternately activated folded auxiliary optical path, with quasi-collimative reflective elements, one closely peripherally disposed to the main optical path, for passing a relatively small auxiliary image through the objective lens and displaying it upon the image-receiving surface on the side of the main image that is opposite to the side where the one reflective element is positioned with respect to the objective lens.

Abstract: The copying machine employed with the projection device of the present disclosure is designed for copying a thin document which is moved directly over a transparent support, and a thick document which is moved over the transparent support through a suitable transparent plate. The projection device includes a light source for projecting light rays emitted from the light source onto the document to be copied through a first optical path formed between the light source and the document. The light rays reflected from the document are transmitted, through a second optical path formed between the document and photoreceptor, towards the photoreceptor surface.

Abstract: A copying machine wherein successive strip-shaped portions of an original are imaged onto a moving photosensitive carrier by a system which is mounted in part on a reciprocable carriage and includes one or more fluorescent or incandescent lamps and a mask having an elongated aperture through which light passes toward and is reflected on successive portions of the original when the carriage is in motion. The width of each strip-shaped portion is a whole multiple of the quotient of the speed of the carriage and the modulation frequency of light. The modulation frequency is twice the frequency of alternating current which is supplied to the lamp or lamps. Such selection of the width of illuminated portions of the original prevents the formation of lighter and darker transverse streaks between the marginal portions of the reproduction.

Abstract: A document photography system photographs the obverse and reverse faces of a moving document by tracking the document with a moving lens. The motion of the lens is in timed relation to the velocity of the document and in dimensional relation to the reduction of the lens. The lens is supported in a flexural mounting which allows the lens to be displaced upon the application of motive power. Motive power is provided by a rotational motor which has its output translated to rectilinear motion by mechanical linkage. The motor output is fed back by an optical tachometer to a phase-locked servo system to maintain uniform, linear lens motion.

Abstract: A copying apparatus comprises an original supporting table having a transparent plate for supporting thereon an image original to be copied, scanning mirror means having a first and a second movable mirror for scanning the image original on the original supporting table without varying the length of the light path thereof to project the image original, a plurality of stationary mirror means stationary during copying operation, lens means disposed in a first light path formed by the mirror means for focusing the image of the original onto a photosensitive medium, and means for newly forming a second light path at a position out of the way of the scanning mirror means by displacing the lens means or by varying the angle of reflection of one of the stationary mirror means.

Abstract: A copying machine capable of copying either bulky originals or sheet originals. The machine includes a bulky original holder and sheet original feeder having a sheet original exposure section arranged at a position sufficiently spaced apart from the bulky original holder so that it does not interfere with the operation of the bulky original holder. A bulky original scanning device includes at least two movable mirrors, one of which is moved out of the optical path to form an optical path for scanning the sheet original.

Abstract: An optical apparatus and reproducing machine includes an optical system for viewing a document and for projecting an image thereof onto a moving imaging surface. A plurality of optical elements are arranged along an optical path. The projected image magnification is changed by changing the position of at least two optical elements. An interlock apparatus associated with the magnification changing system is provided for inhibiting the change in position of one of the two optical elements until the other of the two optical elements has completed its change in position, upon the changing of the magnification of the optical system.

Abstract: An apparatus for stripwise viewing a document and for projecting an image thereof onto a moving imaging surface. The viewing apparatus includes at least one reflector having a reflecting surface and being arranged along an optical path. An illumination slit controls the projected illumination intensity. The slit is defined by at least one boundary configured in a desired profile. The reflecting surface of the reflector is delimited so that at least one boundary defined by the reflecting surface is configured in the desired slit profile, whereby the reflector and slit are arranged integrally together. A reproducing apparatus and a process for making the viewing apparatus also are claimed.

Abstract: Document handling device for placement onto an existing reciprocating document carriage of a photocopy machine to provide support for photocopying documents such as billing statement ledger cards. The document handling device is of one piece construction having a recessed inclined staging tray for storage of documents prior to photocopying, a steeply inclined surface portion with document retainer surface projections for separating and feeding of documents, a transparent document exposure access to coincide with a transport window of the reciprocating document carriage, and a recessed inclined stacker tray for storing documents which have been photocopied. The document handling device has two bottom projections to fit into existing indentations of the reciprocating document carriage and a cutout portion to accommodate a copy sheet length selector knob located on the reciprocating document carriage.

Abstract: An improved exposure slit system for controlling the projected image illumination profile of an optical system of a reproducing machine. The optical system is arranged to stripwise view a document. The exposure slit system includes one exposure slit member arranged near the object plane and a second exposure slit member arranged near the image plane. The exposure slit profile for controlling illumination at the image plane is comprised in part by the profile of the exposure slit member at the image plane and in part by the profile of the exposure slit member near the object plane as projected at the image plane.

Abstract: Control circuitry is disclosed for operating stations in an automatic electrophotographic reproducing machine in either of two modes to make copies of different sizes. In one mode a document is held stationary while moving scanning elements move past it to form a scanned image, and in the second mode the scanning elements are held stationary while a document feeder feeds sheet documents past the scanning elements. The control circuity includes a multiplexer for gating appropriate signals to the various stations according to the mode in which the machine is operating.

Abstract: A device for successive reproduction of original image information to be used in a recording apparatus of a type, wherein the device includes a reciprocating table for carrying an original. The device is generally constructed with a movable table which reciprocates over the original carrying table, and on which information to be changed and selected is placed. A mechanism sequentially and automatically shifts the movable table by a driving force of the reciprocating motion of the original carrying table and thereby selectively changes the information; the shifting and changing mechanism is constructed with a plurality of mutually engaged links, wherein one of the plurality of links is displaced by the reciprocating motion of the original carrying table so as to move the movable table, and, by making variable the engaging length of at least one of the mutually engaged links, the moving distance of the movable table is made variable.

Abstract: An optical system for a scanning apparatus uses a folded optical path with certain mirrors moving, the movement of the mirrors such that the length of the optical path, and thus the magnification, is maintained constant. Either a fixed or movable lens system can be provided. With a fixed lens system there is differential movement of mirrors. With a moving lens system, the lens system and image receiver move in fixed relationship with the scanning mirror.

Abstract: A reciprocating carrier-type photocopy machine having a photoelectric sensor for controlling a copy paper cut-off knife, to conform automatically the size of the copy paper to the size of the original document. A light emitter and photoelectric sensor are mounted beneath a glass platen over which a carrier, which contains the original document, moves for exposing the document to the reproducing mechanism contained beneath. An elongated rectangular mirror is mounted on the bottom surface of the carrier lid for reflecting the emitted light back to the sensor. The original document, when placed in the carrier, blocks the emitted light from being reflected from the mirror to the sensor until the trailing edge of the document passes the emitted light. The reflected light, upon passage of the document, then actuates the photoelectric sensor, which in turn actuates a solenoid of a copy paper cut-off knife to sever the copy paper from its supply roll.

Abstract: An original sheet carrying and illuminating device for use in an electrophotographic copying machine and which is provided with first and second carrying means driven at a predetermined speed to carry an original sheet, the portion of the second carrying means participating in carrying the sheet being shorter than the first carrying means, the second carrying means being provided with means for pneumatically attracting the sheet onto the second carrying means, and there being further provided first and second lighting means selectively energized to illuminate either of the surfaces of the sheet.

Abstract: The exposure process and apparatus are for use with electrophotographic copying machines of the type in which a photosensitive surface is moved at a constant rate at any magnification selected. Upon changing from a magnification of unity to a magnification of .beta., a lens means arrangement which may be of any type, e.g., a customary lens, a variable focus lens, a lens of in-prism or in-mirror construction, is displaced, in a direction perpendicular to the optical axis thereof at unity magnification, by a distance which is determined in accordance with .beta. and another factor so that the same position for placement of an original to be copied on a holder such as a glass plate, can be maintained as the magnification is varied.

Abstract: An apparatus for photocopying information existing on both sides of a duplex document, using dual scan of a transparent sandwich platen. Duplex copies of the document document to one side of the copy sheet, and then transporting the copy sheet within the apparatus to apply a print of the second side of the document to the reverse side of the copy sheet.

Abstract: An electrostatic photographic copying apparatus includes an optical system for projecting an image of an original onto the surface of a photosensitive drum. The system consists of openings for exposure of the original and the photosensitive drum, first and second reflex mirrors, and a mirror lens. The mirror lens is disposed so that light from the original is reflected by the first reflex mirror into said mirror lens and from the mirror lens back to the first reflex mirror. The light from the original is then reflected by the first reflex mirror to the second reflex mirror and from the second reflex mirror onto the photosensitive drum to thereby form a four-fold reverse image of the original being copied.

Abstract: A reproducing apparatus for producing copies of a document selectively at one of a plurality of copy image magnifications. A photosensitive surface is arranged for movement at a given velocity. A plurality of document viewing positions corresponding to different desired copy image magnifications are provided. The document is viewed in stripwise fashion selectively at one of the viewing positions, and an image thereof projected onto the photosensitive surface selectively at one of the plurality of magnifications corresponding to the viewing position selected.

Abstract: A folded optical system for scanning an object and projecting its image in four modes of operation. In one mode, a stationary object is scanned by moving mirrors and its conjugate image projected at unity magnification onto a moving image surface. In a second mode, conjugate distances are varied to project an image at other than unity magnification. In a third mode, the optical system remains stationary and the object is moved relative to it to enable imaging of objects larger than the scan travel of the optics. In a fourth mode, the optics again remain stationary and an add-reflector is introduced to create a reflection cavity to increase the object conjugate for minified imaging of large moving objects. Mirrors and lens are movable to effect magnification changes.

Abstract: A copier providing selectively variable magnification copying of documents while the documents are moved uninterruptedly through a document imaging station on a document transport belt, and full-frame exposed by a flash illumination system, where one edge of each document is registered on the document transport, and the position within the document exposure station at which a document is copied is shifted in proportion to the selected magnification of the optical system by proportionally changing the initiation time of the illumination system. The optical system consists of a fixed mirror, a fixed focus movable lens, and a movable mirror all along a common optical axis, and the movable mirror and lens move in the same direction to change the magnification, shift the imaging position, and control the illumination system operation to compensate for the shift in imaging position.

Abstract: A surface exposure device for use in a copying apparatus essentially comprising a supporting surface for supporting thereon an original from which a duplicate is desired, a lens assembly, a first carriage having therein a reflective mirror and a second carriage having therein at least one reflective mirror. The first and second carriages are conjointly displaceable in the same direction while the first carriage and the support surface undergo relative motion in opposite directions with respect to each other. Copying material on which the image of the original is to be reproduced is transferred at a velocity substantially equal to the relative velocity of movement of the supporting surface and the first carriage, the second carriage being moved at a velocity substantially equal to one-half of the velocity of the first carriage.