DE2047824A1 - Desktop electrostatic copier - Google Patents

Description

Desktop electrostatic copier

The invention "refers to an electrostatic Tischkopierinaschine which, although it is simpler from very, further improved and compact design and this is easily in their performance. A table machine is unlike Sehrankmaschinen small enough to put ish on a l ⁿ to v / earth.

The object of the invention is to create a machine in which the movement paths for the original and the copy sheets are easily accessible to remove paper jams or malfunctions.

Erxindurigsgomäss is an electrostatic table copier proposed with a lower part containing a development station and an upper part hinged to this, which are provided with devices to transfer a copy sheet along a between these two parts and to advance through a station for loading the copy sheet and from there through an exposure station, With the upper part opened, the path of movement is open to the outside, the charging and the exposure station

1098U / 1955

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20A782A

lie above the development station and a deflector vorp; it is seen that causes the exposed Copy sheet after leaving the exposure station is bent through the development station, with one on the Upper part hinged third part, wherein the upper part and the third part are provided with devices to make an original along a second path of movement that lies between these two parts and runs through a lighting station to move forward, and when the third part is unfolded, the second movement path is open to the outside, and with an optical system in the upper part, which at the same time Moving the original and the copy sheet through the lighting station or the exposure station illuminates the original at the lighting station and projects an image of the original onto the copy sheet at the exposure station.

The preferred embodiment of the copying machine according to the invention has safety interlocks that ensure that when the machine is open, the power is switched off.

A preferred embodiment is shown in the attached Drawing shown and is described in more detail below. Show it:

Fig. 1 is a left side perspective front view of a copying machine according to the invention,

Fig. 2 is a vertical cross-section through the center of the machine,

3 shows a right-hand view of the machine with the cover removed,

-3-1098 U / 1965

Fin ;. 4 shows a partial right-hand view of the machine at removed Abdechun ~, and

U ¹ If ¹ J. ^l ) a die Arbeitnv: eiye de.! ¹ Laschim: illustrate the Sch al toi 1 u.

They have a look, oer Lrfindun ~; represents an "improvement on UOJ." in the British patent document 'Ί 194 c4ö described and illustrated electrostatic -corierraaschine with a system sim refill of the Lnt; v; ickler, wel- i

before a further improvement; des in British patent specification 1 194 347 described and illustrated system is.

ITir-, 1 shows an electrostatic table copy machine 1 ! ixt a G-ehäuse!: örrer 10, who is trained that he has a perfect light mapping; in the iiascliine causes a loss of charge of the Κοτχerbosen ε su prevent.

The housing body 10 is composed of an upper part A and a. Lower part B formed (Fi £. 2). The lower part 3 consists of the front parts ~ -j and 4 (ffir. 1) and the between ih- "

nen arranged middle parts 2 and 7j Q-ie all on one Base plate 9 are arranged. The Obex part A can be as a whole around fishing 22 on clei · back of the hash.ine fold up and consists of a lid 5 »an upper one Smock part δ and also from an upper front part 6, which is hinged to part A by means of joints 57, which allow the pivoting of the part 6 over about 60 in order to open the path of movement for the original. By When part A is folded up (by about $ 5 °), the path of movement for the copy sheet is opened or exposed. The walls the front parts 3 and 4 can be removed for maintenance and servicing as well as for replacing the developer tank.

10981-4 / 1966 ._ ₄ .

There is an ochlitz on the front of the machine

11 for receiving the original D above a 'i'rennplat ve 1c and the copy sheet C below this. To facilitate the congruent insertion of the original and copy sheet, the separating plate 18 has a beveled "front edge (i''ir ;. 1) and is located directly above a reading table 12, which is swiveled into a horizontal position when in use, but that does A side edge junction 'Xj provided on the support table 12 can be moved in a slot 14 provided with a position to adjust it to the different paper widths.

The original is placed with the front facing downwards on an ascending trajectory at a "BuI dichtngsstation" 17 passing through a slot 1b between the Lid 5 and your part C moved out of the machine. The copy paper is with its light-guiding oeite (e.g. a zinc oxide coating) facing up through a charging station 26 and an exposure station 29 moved through it to the rear of the hashino, taking it an ei * downwardly inclined trajectory follows, which is then turns sharply down, runs back through a development station ^ 2 until the copy finally through a slot 15 inside the support table

12 exits. The original falls onto the cover ^r j, which can be extended backwards with the help of retractable arms ^[ } j>? is.

The copying machine is not used by one in the drawing operated small electric motor, with an on and off button on the cover 5 of the housing body appropriate for the operation dos kiotors "whose movement is transferred to the transport system for the copy and the original. On the side of the button 19 shows ο a warning lamp ü

SAO 1098U / 1955

indicates that the iiasehine is in operation. On the other hand The button 19 is a second button 20, on which the operator the appropriate for the original to be copied -Exposure adjusts.

All optical parts are housed in the upper part A of the machine, which are arranged between side panels 21 attached to lower side panels by means of the aforementioned hinges 22 23 are steered to.

At the entry point for the documents to be copied f, the separating plate 18 is curved upwards in order to deflect the original upwards between a guide plate 24a firmly connected to the plates 23 and a guide plate 24, which consists of an inwardly curved part of the cover of the upper front Middle part 6 is formed. The original is grasped by crumino rollers arranged on shafts 36 and 36 ', moved through the lighting station 17 and grasped by further pods arranged on shafts 37 and 37', which eject the original through slot 16. The shafts 36 and 37 are mounted in the part 6. On the other hand, the shafts 36 'and 37' mounted in the upper part A that is printed by unillustrated springs in g liichbung to the shafts 36 and 37 are.

It is thus clear that when part G is opened, the trajectory to be followed by the original D is completely exposed, so that any paper disturbance in this trajectory can easily be eliminated. When the part 6 is unfolded v / ircj, push pins ' Jon (i''ig. 4) two sliders 5 <-> with curved tracks i? Fib high, which the shafts 36 'and 37'"from the shafts 3" j uri'i 37 far away.

Dor jSedJ enondo pushed I; π., ίγ. Original ium. the copy paper with it αοο · οπϋ.οϊι Vo / '(io.i ^i! -antoii Ln den »jchliUx 11 in.

1098U / 19B6 *** ° ^mm "

As soon as the pods attached to shafts 36 and 36 ' If you grasp the original, the two of them fall apart Shafts 32 and 32 'the copy paper and move it with the same Speed like the original initially through the unloading station 28 and then through the exposure station 29 to the hells on waves 35 and 35 '· The latter Rollers move the exposed copy paper down through a guide 51 that guides the breading on its way through the development station 52 bends through and from there leads to squeegee rollers 25 and 27, which the Kofjie through the Eject outlet 15 through.

The shafts 32 and 35 are mounted in the upper part A, while the shafts 32 'and 35' are mounted in the lower part B and are pressed in the direction of the shafts 32 and 35 by springs. At the charging station, the upper and lower charging cases 28 'and 28 are attached to the part A and the part B, respectively, and receive corona discharge wires 4-2. The housing parts 28 'and 28 are inclined in such a way that the paper follows a downwardly inclined path of movement towards the rear of the machine. Each housing part has insulating sides 4-3 with bevelled edges in the vicinity of the path of travel of the paper. Thin threads, for example made of nylon, are stretched between the walls 4-3 of each housing part over the opening of the housing part facing the paper in order to prevent the paper from being introduced into one of the housing parts. ^{When the machine is in operation, the charge wires I} V2 present in the upper housing part 28 'and in the lower housing part 28 are fed with a negative or positive voltage.

At the exposure station, the paper moves between an upper and a lower guide plate attached to part A and part B respectively, where the top! 'lath is transparent.

SAD OfflGtNAt -7-

1098U / 1955

It can thus be seen that when the upper part is opened, the parts attached to it separate from the parts attached to the lower part B, thus exposing the entire path of movement for the copy paper up to the deflector 51 for eliminating paper faults. Parts A and B are normally kept closed by means of ^: arms L urged by springs K (Fig. 4).

The motor (not shown) drives the roller 25 via a worm wheel. The roller 25 carries a gear 30 (Fig. 4), which when the part is placed against part B "

A with a gear ^: 31 on the shaft 32 meshes. A toothed pulley 40 on the shaft 32 drives the shafts 36, 37 and 35 via corresponding pulleys and a toothed drive belt 34. The optical system is entirely attached to part A and consists of two lamps 39 with reflectors 45 and 46 (FIG. 2) which illuminate the original at station 17 through a transparent disk. The image of a strip of the moving original is transferred to a reflective lens 48 with a nominal focal length of 135 mm and an opening of 4.5 mm, λ from there to a further mirror with a foil on its front using a mirror 47 with a foil on its front side 49 and reflected from there onto the moving copy paper at the exposure station. The paths of the beam paths are such that the image is reproduced at the exposure station with a reproduction ratio of 1: 1. A fan 44 (Fig. 3) cools the lamps. The reflective surfaces of the mirrors are provided with a layer of silicon monoxide. The illustrated broken, intersecting beam path leads to little space requirement.

-8- ■ ^ '' 'To 9 * 1 U / 1 9 S 5

The exposure control button 20 (Fig. 4) controls a flap 50 via a lever 50a, which the optical paths from the original to the mirror 47 partially darkened and can thus be used to get to the copy paper To regulate luminous flux.

The base surfaces of the original to be copied can Have different reflective properties, which is why it is necessary to provide means for that at the exposure station to change the amount of light to be used. With sufficient experience, the operator is able to judge the setting required according to the surface types of the originals in order to find the optimal To achieve exposure conditions for the respective original on the copy sheet. The controller 20 is designed so that it provides five different levels of lighting intensity.

After its exposure, the copy sheet is made with the help of the rear semicircular guide or diverter 51 directed to development station 52 while simultaneously the original is ejected through the slot 16.

A carrier is located at development station 52 160 for holding the developer container 70, which has a plate 164 attached to an arm which can be pivoted about a shaft 165 163 hinged and movable between a lower loading and unloading position and an upper operating position is. A connecting lug 166 of one of the arms 163 is connected with its upper end to a lever 168, which can be raised and lowered with the help of a crank. The removable and independent developer container 70 is arranged in the carrier 160. The container is made of plastic and is designed so that it has a Forms developer tank 52, which is concave on its upwardly facing surface and is thus suitable for the Take up exposure station 29 coming copy sheet.

10981 A / 1965

When initially inserted into the machine, the developer container 70 is sealed to prevent overturning to prevent both during the storage time and during the insertion process. During this insertion process the plate 164 is in its lower position so that the container is conveniently in the correct position can slide. After this is done, the plate 164 pivots upward and upward as the lever 168 is raised causes the developer container to come into contact with the stop strips 162 that hold it in its Hold the operating position clamped. In this position | is the container for feeding the developer into the Tank 52 prepared.

In the lower part B. of the copier are one in the drawing Air pump, not shown, and a pipeline 76 leading from the pump to the container is attached. Part of the pipeline runs through a guide column 77 and a slider 83 telescopically displaceable in this through, with her inserted into the container End 78 is formed from rigid material and has a beveled cutting edge to close the closed to penetrate opening of the container. Also will together with the pipeline 76 a (not shown) " second perforation element moved downwards in order to form a second opening in the developer container, so that the developer can get into the developer tank 52. The pump leads the container 70 via the pipeline 76 Air to which the developer through the opening formed with the aid of the second perforation element in the tank presses into it. The crank actuating the lever 168 additionally controls the positioning of the plate 164 as well the position of the sliding piece 83 around the one with a cutting edge provided end 78 of the conduit 76 and the second piercing element to move downwards. To do this, the crank has

1098U / 19SS " ¹⁰ "

a toothed segment 80, which is connected to a slider 85 trained rack 82 can come into engagement. At the same time as putting the developer container into position actuates the toothed segment 80, the rack 82, the pipeline 76 »its beveled end 78 and the second perforation element moved downwards and thereby cuts openings in the developer container. on the other hand When the container is to be changed, the crank and lever 168 also lower the plate 164- Help the connection 166 down to its lower position, thereby releasing the container and also bring up the slide 83 and the pipeline 76 and withdrawing the second perforation member from the container.

A float 86 slidably mounted on the pipeline 76 in the developing tank regulates the level of the developer in the tank. When the developer reaches its operating level, the float forces the air to be withdrawn from the container so that any inflow into the tank is stopped. When sinking the level of the developer, the float 86 directs the air flow back through the conduit into the container so that the developer tank is refilled. A more complete description of how it is built and how it works of the developer container can be found in British patent specification 1,194,847.

Above the upper right part of the container and separate from it is a holder 88 for a bottle 90 for refilling attached with concentrated developer. The bottle 90 is screwed into the holder that comes with a perforation tube 92 is provided, which is in communication with the tank 52 below. The screw effect leads to perforation of the tight seal

-11-1098U / 1955

the bottle and for the flow of the developer concentrate into the tank, where it is with the result of the implementation of a Working cycle of the machine used developer liquid is mixed.

A little above and in front of the development station are two Squeeze rollers 25, 27 for receiving the copy sheet after its passage through the processing tank 52 and to its Ausxtferfen arranged through the outlet 15 therethrough.

The surface of the rollers is made of rubber or something similar Material made to remove excess developer fluid from the copy sheet. A drip plate 94- is hinged to the side walls 23, which is of the Squeegee rollers 25 and 27 dripping developer liquid returns to the tank 52.

On the right side of the machine is near the front a centrifugal fan 54- (Fig. 3) arranged, which can sweep air over the copy sheet while it moves from the squeezing rollers 25, 27 in the direction moved to exit 15. Towards the rear of the On the right side of the copier the aforementioned motor is arranged, which via a worm wheel with the on |

the end of the roller 25 attached gear 30 connected is and also drives aas fan 54-.

The machine is supplied with power via a two-pole microswitch 65 (Fig. 4-). The switch button 19 is adjusted an eccentric pin 61 connected to one end of a lever 59. The lever 59 is in turn over on one Shaft 64 · attached levers 62 and 63 with the microswitch 65 connected. The lower end of the lever 59 is with a pin 60 attached to the lower part B engages, so that when the upper part A is opened, the pin pulls the lever 59 pulls down and turns off the power. This mechanical interlock ensures that paper malfunctions are corrected complete security.

1098U / 196S

Another lock prevents the machine from being switched on when the side cover 3 is removed for replacement. · -. its the developer tank. For this purpose, a leaf spring 66 lies against a roller 67 attached to the lever 59. By an existing on the side cover 3 (not shown) Approach the leaf spring 66 is lifted from the roller.

According to FIG. 5, “when the switch 65 is closed is a power connection T. to the connected terminals of a relay R and from there to the motor M, the pump P, the warning lamp S and a fan circuit V connected, which drives the fan in the event that it has a special motor. The current-carrying connection Tp with a fuse F * and other connections is used to supply power to the aforementioned parts intended.

The lamps 39 and a high voltage circuit A.T. for feeding of the corona discharge wires 42 are only energized when a copy sheet actually passes through the Machine moved through. For this purpose, the end 26a of a lever 26 protrudes directly behind the first rollers 32, 32 'into the path of movement of the copy paper, so that a microswitch 38 via a shoulder H of the lever 26 and an arm N of the microswitch is closed. When the switch is closed and the relay R is energized, contacts U connect the current-carrying terminal Tp to the high-voltage circuit AT. and the lamps 39 · The lever 26 is in the "on" position by a lug 41 of another Lever 33 locked, which protrudes in the vicinity of the second pair of rollers 35 »35 'in the path of movement of the copy paper. The lever 33 is pivoted counterclockwise against the action of a spring Z by the copy paper. if the trailing edge of the copy paper moves through between the second pair of rollers 35i 35 'and thus out of the exposure station 29 is completely removed, the spring Z leads

1098U / 19SS

the lever 33 back to its original position, so that the lever 26 is unlocked, the switch 38 is switched off and the relay R is de-energized. If filament discharge lamps are used, it can be set up in such a way that that this occurs during the entire time that switch 65 is closed, are fed with current to keep the lamps warm and ready for ignition when the relay R is working.

Patent claims:

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109814/1968

Claims (7)

Claims c _; hey Electrostatic desktop copier, characterized by a lower part containing a development station (52) (B) and a top part (A) hinged to this, which are provided with devices, around a copy sheet (C) along one lying between these two parts and through a station (28) for loading the copy sheet and from there movement path running through an exposure station (29) to move forward, whereby when the upper part (A) is opened, the path of movement is open to the outside, the charging and the Exposure station are above the development station (52) and a deflector (51) is provided which causes that the exposed copy sheet (C) is after exiting the exposure station (29) is bent through the development station, with one hinged to the upper part (A) third part (6), wherein the upper part (A) and the third part (6) are provided with devices to an original (D) along a second lying between these two parts and running through a lighting station (17) To move the path of movement forward, and when the third part (6) is unfolded, the second path of movement is open to the outside, and with an optical system in the upper part (A), which moves through the original and the copy sheet at the same time through the lighting station (17) or the exposure station (29) the original is illuminated at the lighting station and at the exposure station on the Copy sheet (C) projects an image of the original. -15- 1098U / 1955 2. Copying machine according to claim. 1, characterized in that that the devices for advancing the original and the copy sheet pairs of rollers (36, 36 '; 371 37' "and 32, 32 '; 35 »35 '), the" two roles of which are in each case on the upper or are attached to the lower part or to the upper part or the third part and each one with a pulley equipped driven pulley, whereby the individual pulleys are driven by a drive belt (34 ·) with each other νβ ^ μηάβη. 3. Copying machine according to claim 2, characterized in that the pulleys and the drive belt are toothed or are designed to be slip-proof. 4 ·. Copying machine according to claim 2 or 3 *, characterized in that that a driven roller is attached to the upper part (A) and over when folded down against the lower part (B) Upper part engaging gears is connected to a motor. 5. Copying machine according to one of claims 1 to 4 ·, characterized characterized in that from the lighting station (17) to the exposure station (29) is guided by a broken beam path that crosses several mirrors. 6. copying machine according to one of claims 1 to 5 »characterized in that in the optical system one by hand controllable, in which from the lighting station (17) to the exposure station (29) leading beam path, adjustable in its position flap (50) for control the exposure of the copy sheet (C) provided -16- 1098U / 1965 7. Copying machine with a development station containing a carrier, with a replaceable, independent one on the carrier removably arranged developer container, the top of which has a concave, shell-shaped tank forms, with facilities for Piercing the tank and means for pumping a developer into the concave tank from inside of the container, characterized in that above the container (70) and separated from it a Holder (88) is attached, with a perforated tube emptying into the tank at the bottom (92) is provided, which is the sealing closure of a bottle screwed into the holder (90) penetrates and introduces concentrated developer directly into the tank (52). Ur - 22 4-64 10981 Ul 1956 -if Blank page