US3406655A - Apparatus for producing copies - Google Patents

Apparatus for producing copies Download PDF

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Publication number
US3406655A
US3406655A US543592A US54359266A US3406655A US 3406655 A US3406655 A US 3406655A US 543592 A US543592 A US 543592A US 54359266 A US54359266 A US 54359266A US 3406655 A US3406655 A US 3406655A
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US
United States
Prior art keywords
stack
sheets
developing
liquid
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US543592A
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English (en)
Inventor
Walter Limberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lumoprint Zindler KG and Co GmbH
Original Assignee
Lumoprint Zindler KG and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DEL50549A external-priority patent/DE1262762B/de
Application filed by Lumoprint Zindler KG and Co GmbH filed Critical Lumoprint Zindler KG and Co GmbH
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/14—Details
    • G03B27/30—Details adapted to be combined with processing apparatus
    • G03B27/303—Gas processing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/104—Preparing, mixing, transporting or dispensing developer
    • G03G15/105—Detection or control means for the toner concentration

Definitions

  • Each of the storage devices is provided with means for generating an acoustic signal in response to the decreasing quantity of the materials within the storage device.
  • a pump having a drive means is provided for delivering the developing fluid into a developer vessel.
  • a mallet-like member is associated with the drive means for the pump and rotates within the storage tank within the body of developing liquid.
  • a hell or similar device is provided in the developing tank and is arranged to be contacted by the mallet as the level of liquid drops in the tank. As the liquid level drops below the bell, the sound emitted by it will change and a varying acoustic signal will be provided indicating the corresponding decrease in the liquid level.
  • Sheets of copying material are held in a storage tray between a support plate and a transport roller for feed- .ing individual sheets into the copying material transport system.
  • the support plate and the roller are urged together by spring means or the like.
  • a mallet-like member is mounted on one end of the roller and rotates with it. As the number of sheets decreases within the storage tray, the mallet begins to strike the surface of the support plate which extends beyond the sheets of copy material providing an acoustic signal indicating the decreasing quantity of sheets.
  • the invention relates to an apparatus for producing copies, comprising storage devices, the content of which is used up during the operation of the apparatus.
  • Such storage devices may be designed as storage vessels to receive the developing fluid, or as stack holders for a supply of copying material. If the developing fluid is to be stored, the vessel may be large enough to contain an excess thereof.
  • Known devices for producing copies comprise a developing section and a sheet feed, which may work in conjunction with an apparatus control. Moreover, such devices may also be equipped with an exposure device.
  • the present invention has the object of providing an automatic apparatus, equipped with novel and automatic devices, indicating in time that the supplies need to be replenished.
  • this object may be realized by an acoustic signal indicating the degree of charge in a storage device, wherein a revolving element is equipped with a mallet which impinges on a sounding element when "ice the stored material drops below a certain minimum amount.
  • such sounding element in the developer liquid is a bell
  • the mallet has the form of a resilient strip or plate, mounted on a revolving element, arranged at such a distance from the bell that the straight element impinges on the bell, whilst the element travelling through the liquid is deflected by the resistance of the liquid.
  • the bell is preferably dish-shaped, having a certain height, and during the gradual dropping of the liquid level, the liquid drops gradually below the bell, so that the sound of the bell changes as a function of the dropping liquid level, due to the gradually decreasing fluid resistance thereof.
  • the invention achieves a tone control after the manner of the signal intensity of sound level, indicating directly to the operator the degree of charge in the tank.
  • the specific resistance of the liquid changes as a function of the enrichment in pigments so that in this case, that is to say, in the production of copies according to the electro-photographic method, also the condition of the developer fluid is indicated by the signalling device according to the invention.
  • the resistance of the liquid to an element passing therethrough drops and an acoustic signal is given.
  • the storage device contains a stack of sheets of copying material, associated with an intermittently actuable transport roller for removing the top sheet of the stack, the bottom sheet of which is located on a platform resiliently urged in upward direction
  • the roller spindle carries a mallet revolving with the roller and longer than the radius of the roller so that it impinges laterally of the stack on to the contact plate, when the height of the stack is reduced to a minimum value.
  • a novel acoustic signal is achieved, indicating the presence of a certain amount of copying material.
  • FIG. 1 is a side elvation of a copying apparatus with one side wall cut open to explain the parts essential to the invention
  • FIG. 2 shows on an enlarged scale a detail of FIG. 1;
  • FIG. 3 is a top view of a part of FIG. 2, and explains different functional positions;
  • FIG. 4 is a side elevation of the apparatus on a more complete scale than in FIG. 1, in cross-section along different planes, and showing only the parts necessary for explaining its operation.
  • FIG. 1 shows the main housing 1 on the upper surface 2 of which there is a frame 3 forming part of the exposure device and adapted to receive an original in the direction of the arrow 4.
  • Reference numeral 5 indicates the delivery slot for the copies; it should be mentioned that the sheets of copying material are stored inside the housing and supplied in the rhythm of the apparatus. The process is initiated by a lever 6 protruding from the front of the apparatus and is depressed for switching on the drive.
  • the present invention relates to the storage devices.
  • the opened front wall of the housing shows two storage devices, namely a developing device 7, shown on an enlarged scale in FIG. 2 and explained with reference thereto, and a storage device for copying material of which a stack 8 may be seen through the broken away front wall of the housing.
  • the developing device has a housing 9 which can be withdrawn through a flap 10 in the front wall of the housing.
  • This housing 9 is trough-shaped and has in its bottom a recess 11 containing a pump 12.
  • the pump is driven by a vertical shaft 13 and a gearing 14, connected by a transmission, not shown, with a drive motor.
  • the bevel gear 15 of the gearing may have a rim cooperating with a squeeze roller 16 (FIG. 1) at the outlet of the developing section.
  • the suction socket of the pump 12 terminates in the lower part of the trough 9.
  • the delivery socket 17 extends in the form of a tube upwardly and leads into a troughshaped vessel 18 arranged in the form of a concave dish in the cover 19 of the tank 9.
  • This vessel 18 may have, for example, a part circular cross-section. Near its ends it has lugs 20, 21 extending over its entire width and carrying a perforated plate 22, adapted in shape to the trough 18.
  • This plate has several rows of holes 23 extending over the entire surface from the lug 20 to the lug 21 and arranged in steps, i.e. laterally offset in the direction of movement.
  • a suitably arcuate dish 24 is mounted in the side walls of the trough 18.
  • the copying material passes through the chamber between the dish and the plate in the direction of the arrows 25, 26.
  • the developing device of FIGS. 2 and 3 provides simultaneously for an acoustic indication of the degree of charge in the tank 9.
  • a bell 31 is mounted at the bottom of the tank 9 at a certain distance from the shaft 13.
  • the lower part of the shaft is equipped with a fixed bush 32, on which is mounted a rod, strip or plate 33 extending radially from the shaft 13.
  • This plate or strip 33 extending preferably vertically in cross-section, is elastic, and may be made of metal or plastic.
  • the resistance of the liquid in the tank causes the plate or strip 33 to bend, as indicated at 33 in FIG. 3. In this bent state, it does not make contact with the bell 31.
  • the invention therefore provides an element operating as an acoustic liquid level indicator on a purely mechanical basis and supplying a signal changing as a function of the liquid level.
  • FIG. 1 shows that the cover 19 of the developing device has a hole 35 above which is arranged the delivery socket 36 of a tank 37 for developing fluid or for pigment particles.
  • the tank may be opened by any known means, for example by a push button.
  • FIG.1 shows a curve construction of the delivery pipe 17', which may be av hose and terminates at a lower point in the trough 18 than in FIG. 2.
  • a chamber 4 with a drawer shaped container, accessible. througha. flap 39, and containing a stack 8 of sheets of copying material.
  • the stack 8 is mounted on a slide, consisting of a base plate 40, side walls, of which the rear wall 41 is shown, and an end wall 42 serving as abutment,
  • a limit stop 43' for the'drawer-shapedcom tainer in the form of a wall extending obliquely upwardly and to the right, above which the -sheets'ofcopying material are detached.
  • the stack plate rests on a support plate 45 articulated to the base plate 40 by a joint. 44. Within the Zone of its front end the support plate is affected by springs on either side of the stack, as at 46. The upper ends of these springs are mounted in a support 47 located at a raised projection 48 of a side wall 41. In addition, the side walls are interconnected by a bar-shaped abutment 49 against which the top sheet of the stack is pressed when the arrangement is outside the housing.
  • the support plate 45 extends at least on one side beyond the stack and consists preferably of a material ringing under impact.
  • rollers are mounted in assembly walls of the housing extending parallel to the drawing.
  • An intermittently actuable delivery roller 50 acting on the top sheet of the stack is located above the .stack 8 near its end in the centre of the housing.
  • the lower periphery'of this roller is seen to be somewhat below the abutment 49.
  • This roller carries a radial mallet 51 whose hammer 52 protrudes beyond the periphery of the roller.
  • the mallet may be made of elastic wire.
  • the hammer 52 makes contact adjacent to the stack with the vertically movable support plate, when the stack has been reduced to a few sheets, that is, when the paper has been largely used up.
  • the mentioned construction of the vertically movable hinged support plate 45 of a ring material results in acoustic signals when the stack is used up. Also here the principle of an acoustic signal is used with simple mechanical means for indicating the degree of charge of the copying material store. Of particular importance is the vertically rnovable support plate 45 because it is moved into the range of the hammer with the increasin consumption of sheets of copying material.
  • the bevel gear 15 in FIG. 2 may be directly connected with a drive motor 53. Accordingly, as shown by dotted lines in FIG. 1, the roller 50 may be provided in its axial extension with a drive motor 54.
  • FIG. 4 shows a more complete representation of the apparatus, but also here only the essential elements are dealt with in their mutual relation.
  • the automatic apparatus has a top cover 55, a front wall 56, a rear wall 57, a base plate 58 which may be equipped with legs.
  • the top cover 55 has holes 59, 60, 61, 62 through which guide rollers 63, 64, 65, 66, mounted in side or assembly walls, extending parallel to the drawing, protrude with a part of their periphery over the top 55 of the housing, by an amount of, for example, 1 or 2 millimeters.
  • the top cover 55 has between the holes 59, 60 and the guide rollers 63, 64 a transparent exposure plate 67 extending at least over the width of the copying material to be processed and over which an original is passed.
  • the exposure plate is irradiated from below by at least one light source 68 arranged within the housing, for example by a tubular lamp, arranged in a reflector 69 which directs the radiation towards the exposure plate 67, but is located outside the picture beam, indicated by a dash-dot line 70.
  • This beam impinges on'a deflecting mirror 71, arranged, for example, on a three-point suspension on a plate 72 fixed in the housing.
  • the beam passes via the mirror 71 through an intermediate partition 73, having an orifice 74; this orifice has a width corresponding to the picture beam.
  • Behind the mirror 71 there is an objective lens 75.
  • the exposure beam has an L-shaped configuration and passes along a horizontal path 76 to a guide surface 77,
  • the substantially vertically: located guide surface-77' defines a channel with the upper wall'73 and the lower wall 78. These walls define between themselves the horizontal section of the L-shaped exposure beam towards the top aud bottom between wall portions of the housing, extending parallel to the-plane of the'drawing and mounted on the housing walls.
  • the exposure device has a special frame 79 with -counter-spins located therein.
  • the frame may be detachable'an'd serves for guiding an original over the transparent exposure plate 67.
  • the upper zone of the housing forms a space above a shutter plane 80, shown only in part, with a motor 81 arranged thereabove, adapted, to drive the revolving parts of the apparatus by means of a cable drive 82.
  • the developing section 83 is located underneath this part and is shown enlarged in FIG. 2.
  • the development device 83 is mounted on the partition 73.
  • the cover 19 has an opening 35 above which is arranged the delivery socket of a storage tank 37 for developer fluid or for pigment.
  • the container may be opened from the outside by known means, for example by a push button.
  • the chamber Under the partition 78 is the chamber with a drawer shaped container, accessible through the flap 84 and adapted to hold a stack 85 for sheets of copying material (indicated at 8 in FIG. 1).
  • the slide for the stack 85 consists of a base plate 86 (40 in FIG. 1), side walls of which one, 87 (48 in FIG. 1), is shown and an end wall 88 (42 in FIG. 1) serving as abutment for the. stack.
  • a stop 89 43 in FIG. 1 for the drawer shaped container in the form of a wall directed obliquely towards the top right and above which the sheets are detached.
  • the stack 85 (8 in FIG. 1) rests on the support plate 45 described in conjunction with FIG. 1.
  • rollers 92, 93, 94 Downstream of the storage mechanism there is a transport section, defined on the top and bottom by perforated guide faces 90 and 91. Disk-shaped portions of rollers 92, 93, 94 project into these perforations. The said rollers are continuously driven in the direction indicated by the arrows, after the apparatus has been switched on. The rollers 92, 93 run adjacently. The roller 92 is associated with a control cam roller 95, mounted easily rotatably between the assembly walls, and carrying out certain control functions, not described in detail.
  • the guide section formed between these parts extends through a charging device 96, 97 in the assembly walls, equipped with corona discharge wires.
  • the guide track is then reversed by the curved guide face 98 towards a pair of transport rollers 99, 100, driven in the direction of the arrows, for example by means of the belt drive 82.
  • This pair of transport rollers is in front of the lower end of the guide face 101.
  • a pair of transport rollers 102, 103 driven in the direction indicated by the arrows, is arranged on the upper end of this guide face.
  • a guide member 101 may extend between the rollers 100, 103 which may be biased by spring pressure towards the guide face.
  • rollers 106, 107 Above the contact zone between the rollers 102, 103, there is another curved guide member 104 for guiding the sheet of copying material towards the inlet of the developing section 83, already described, as indicated by the arrow 105 (25 in FIG. 2). Above the outlet of the developing section are rollers 106, 107, one of which is shown at 16 in FIG. 1, and the transport section extends from above these rollers between guide members 108, 109, 110 to driven pairs of rollers 111, 112.
  • the said guide member 108 and preferably all the other guide members have perforations. They may consist of strips, wires or perforated plates.
  • a heating radiator 113 is arranged above the guide element 108, for example within a reflector, or with a certain direction of radiation, so that the guide section is heated.
  • a developing device for the copying material in the guide track comprising: a storage tank with developing medium, consisting of the dispersion of a pigment in a liquid, an acoustic signal generator indicating the degree of charge ing material is passed, connecting and pumping means for carrying the developing medium from the storage tank into the arcuate guide, driving means for the said pump ing means located at a lowest point of the storage tank, a revolving element in the said developing medium, and connected to the driving means, the arrangement of an acoustic signal generator indicating the degree of charge at least of the storage tank, said signal generator being arranged in the form of a mallet on the revolving element, the arrangement of
  • a device for producing copies comprising a housing, a developing device disposed within said housing, at least one storage device disposed within said housing for holding individual sheets of copying material, guide and transport means for selectively guiding individual sheets of copying material through said developing device, said storage device comprising a stack holder for said sheets of copying material, a support plate in said stack holder for supporting the stack of sheets of copying material, said support plate arranged to extend beyond the width of the stack of sheets of copying material, a rotatably mounted transport roller disposed above said support plate and arranged to be in contacting relationship with the top sheet in the stack of sheets of copying material, drive means for intermittently driving said transport roller for displacing one shet of copying material from said storage device at a time, spring means arranged to urge said support plate and said transport roller together, means for generating an acoustic signal indicating the quantity of copy material in said stack holder as a function of the decrease in the distance between said support plate and said roller.
  • said means for generating an acoustic signal comprises a mallet arranged on the shaft of said transport roller, said mallet having a radius greater than the radius of said roller and disposed to rotate in a plane adjacent to and spaced from the edge of said stack of sheets of copying material, said support plate made of a material arranged to give off a sound when it is struck, whereby said mallet rotates with said transport roller and as the number of sheets in the stack decreases the mallet commences to strike the support plate and generates a sound when the level of the sheets in the stack decreases below a predetermined minimum level.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Wet Developing In Electrophotography (AREA)
US543592A 1965-04-23 1966-04-19 Apparatus for producing copies Expired - Lifetime US3406655A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEL0051825 1965-04-23
DEL50549A DE1262762B (de) 1965-04-23 1965-04-23 Steuereinrichtung fuer eine Vorrichtung zum Herstellen von Kopien

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US3406655A true US3406655A (en) 1968-10-22

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US543592A Expired - Lifetime US3406655A (en) 1965-04-23 1966-04-19 Apparatus for producing copies

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DE (1) DE1522778C3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3636925A (en) * 1970-08-31 1972-01-25 American Photocopy Equip Co Intensification electrode assembly for developer in office photocopy machine
US3642515A (en) * 1967-08-24 1972-02-15 Xerox Corp Liquid development utilizing a curvilinear development electrode
US3689064A (en) * 1969-05-05 1972-09-05 Scm Corp Paper feed arrangement
US3768805A (en) * 1972-05-18 1973-10-30 Scm Corp Paper feed apparatus
FR2180859A1 (de) * 1972-04-19 1973-11-30 Agfa Gevaert Ag

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2245330A (en) * 1937-08-10 1941-06-10 Gerh Arehns Mek Verkst Ab Method of and device for dressing fish
US3087405A (en) * 1959-12-21 1963-04-30 Sperry Rand Corp Film processing apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2245330A (en) * 1937-08-10 1941-06-10 Gerh Arehns Mek Verkst Ab Method of and device for dressing fish
US3087405A (en) * 1959-12-21 1963-04-30 Sperry Rand Corp Film processing apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3642515A (en) * 1967-08-24 1972-02-15 Xerox Corp Liquid development utilizing a curvilinear development electrode
US3689064A (en) * 1969-05-05 1972-09-05 Scm Corp Paper feed arrangement
US3636925A (en) * 1970-08-31 1972-01-25 American Photocopy Equip Co Intensification electrode assembly for developer in office photocopy machine
FR2180859A1 (de) * 1972-04-19 1973-11-30 Agfa Gevaert Ag
US3768805A (en) * 1972-05-18 1973-10-30 Scm Corp Paper feed apparatus

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Publication number Publication date
DE1522778A1 (de) 1969-10-02
DE1522778C3 (de) 1974-03-14
DE1522778B2 (de) 1973-08-09

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