DE2112330A1 - Automatic shutdown device for a copier - Google Patents

Description

D (LMDLLER-BORe Dl PL-PHYS. DR. MAN iTZ DIPL-CHEM. DR. DEUFEL DIPL-ING. FINSTERWALD DIPL-ING. GRÄMKOW

PATENT LAWYERS ^U

J2, MRL

We / Sv - O 2308

Copystatics Manufacturing Corporation Bed Eoad at U.W. 139 Street, Miami Lakes, Plorida 33014, USA

Automatic shutdown device for a copier

The invention relates to an automatic shutdown device, especially for use in copier machines.

Many of today's office copier machines are built in such a way that that when the main power switch is on, the machine will remain on until this switch is switched off again. Typically, the machine remains on during the farmer of the business day. Since the If the machine is not in operation for a large part of the day, it is obvious that this is a waste of energy and unnecessary wear and tear of parts is associated with it,

109841/1204

Many automatic shutdown devices are known designed for different devices. In general it can be stated that such devices for use are not suitable for a copier because they are unable to determine when the machine is running should be turned off.

The object of the invention is to provide an automatic switch-off device for a copying machine.

In accordance with the principles of the invention, there is provided a timer to measure the amount of time one minute after the 3rd original document to be copied has been inserted into the machine. When a minute passed is after the last original document has been fed into the machine, this is an indication that the Machine is no longer in operation and that the power supply should be turned off. If at any point in time within the one-minute interval When a new original document is introduced into the machine, the time cycle starts all over again and the machine | will only switch off when an idle minute has passed. (The time cycle can range from 15 to a few minutes, depending on the particular requirements.)

The main on-off switch, usually on the front located on the machine serves a dual purpose in accordance with the principles of the invention. Besides controlling the Main energy contact, he also takes over the control of one rigid pin when the switch is moved from the "on" position to the "off" position. A time engine is foreseen which is switched on after each original

109841/1204

document has been inserted into the machine. The moment a new original document is introduced, sets the time motor back. After the oral document is introduced the time motor starts operating. If no new original document is introduced within a minute, the timing motor completes its cycle and a cam on the motor shaft causes an auxiliary contact to open. This auxiliary contact is in series with the main on-off mains contact. Thus, the auxiliary contact opens at the end of any non-operational phase of the machine of 60 seconds and the machine is switched off. To switch the machine on again, the main switch, which is still in is in the "On" position (since the machine was automatically switched off by the cut-off device), initially turned off and then turned on again. When the main power switch is first turned off, it causes that the rigid pin moves in such a way that it resets and closes the auxiliary network contact. At this time, while the auxiliary contact is closed, is the main network contact open because the main power switch must be switched off in order to switch on the auxiliary contact in the first place. As soon however, the main power switch is turned on again, both contacts will be closed, and the machine will be using Energy supplied.

A feature of the invention is to provide two contacts in the main power line of a copier machine, from which is the first contact through the machine on-off switch is opened and closed and the second at the end of any predetermined idle interval of the machine is opened and by a mechanical connection of the Machine on-off switch is closed.

10-98A1 / 1 ?

Another feature of the invention is to provide a To provide a time motor or a timer motor for controlling the opening of the second contact, the time motor is reset every time an original document is inserted into the machine and controls the opening of the second contact only takes place after no original document has been entered into the Machine * was introduced.

p | The invention is described below, for example, with reference to FIG Drawing described; in this shows:

1 shows a schematic representation of the electrical circuit to illustrate an embodiment of the invention,

I ¹ Ig. 2 shows a plan view of the disconnection device according to the invention,

Pig. 3 shows a section along the line 3-3 of FIG. 2, Fig. 4 is a section along the line 4-4 of Fig. 2,

h Fig. 5 shows the various elements in a schematic representation in a switch when it is closed, and

6 shows a schematic representation of the same elements when the switch is open.

The schematic representation of FIG. 1 shows only those elements of a copying machine which are necessary for understanding of the principles of the invention are required. The machine is equipped with a flat bed 44 on which a Original document 42 to be copied can be arranged. The document is fed into the gap between rollers 36, 38

109841/1? (H.

introduced, which are so controlled that they rotate in the sighting of the arrows shown in the drawing. This moves the document 42 in the direction of arrow 40 "If the document passes between the lamp 32 and the photodetector 34, the light from the lamp to the detector is blocked". This conventional scanning technique can be used for a number of twists. For example, it can be used clasra to start feeding the copy paper SU. It can also be used to cut a sheet of copy paper from a pile to the exact size. When the trailing edge of the original document 42 passes between the lamp and the photodetector, the power supply to the photodetector can cause a knife to cut a sheet from the copy roller. The various functions controlled by the scanning elements are not for an understanding of the invention necessary. As far as the invention is concerned, it is only essential to establish that the output of the photodetector is led to the hot coil 26. The hot coil, which controls the operation of the heater 24, is supplied with energy when the photodetector detects light. The contact 23 is NOTM & l proof © geachlossen _$ around the conductor 50 with the timing motor 22% n connect "Wexm but an original document between the Lamp © 32 and dam photodetector 34 Isadurchgeht ₉ switches the blocking of light by the photodetector the relay coil from" Is äiasem Seitpuakt The contact 23 opens (does the terminal 29 move) ₉ and the Snergi © is supplied to the time motor

Μ © 1ί © ± 1ι @ 2? 10 and 12 are in the Hetsleitung of the Maseni & e, xmä the energy is conducted through this conductor to the HaseMa © «The contact 14 is through the main input

controlled ₉ which is normally on over

'841

Front panel © of the machine is arranged *. According to the illustration of the contact is in its open position _8, the open position of the dee Eairpt-on-Sehalters corresponding _o as shown in the drawing, the contact 18 no room proof closed © ^ order. to connect the conductor 11 to the conductor 28. Conductor 12 is directly connected to conductor 30 and conductors 28 and 30 thus serve

aa the- different. Elements of the machine to ^ they deaen required _s auefe when the contacts 14 UNFI, 18 are both closed uaö · Sas closing the contact © 14 causes 18 _t that the Kotor 22 is applied to the Nets, _s assumed that the contact 23 su this Time is closed »

Between the Eauptestjzkoiitaktj 14 RASD the auxiliary skontakt 18 a, dashed arrow 16 is shown "The arrow to a mechanisch® Terbisdiing between the main on-off switch (which directly the Wass open. Sohli © Sen the contact 14 controls) and the Represent auxiliary contact 1S · If the main Έϊη-off switch (on the front plate of the machine) is moved from its "Off" position to its ^B On "position, this has no effect on the Eoatalit 18. However, if the main Eia-off Sciialter from its position "a" - in its Btellung "Off""moved" ird (zn eggs time _g to-which the contact 14 check is that shown in Figure 1 position moved.) GM © rarsadit a mechanical ¥ connection, Äß the contact 18 from the terminal 25 »if it was connected to this terminal ₉ passes to the terminal 27.

Gestrichsltem the arrow 20 komsit similar eiae The time motor ¹ 22 is normally under tension, "If no QrigiaaMoimiasst wirä introduced into .the Naschine _s is the Heiais 24! _S operated and the Eostalrfe 23 is located in

109841/1204

the position shown in the drawing. While the contact is being closed, the time motor 22 runs. Running of the motor has no effect on the machine. However, when the time motor completes its one-minute power cycle a cam on the motor shaft causes contact 18 to pass from terminal 27 to terminal 25. This is shown symbolically by the dashed arrow 20. If at any point during the When the engine is running, an original document is inserted into the machine, the Seiais 24 is de-energized and the Contact 2J is movable to terminal 29. Thus, the time motor disconnected from the power supply, and a spring provided on the time motor causes the motor shaft in its Starting position goes back. Contact 18 is only there opened when the engine has been running continuously for one minute.

When the machine is turned off at the end of a business day is to be, the main on-off switch is in the position "Off" moves. So that the contact 14 is opened; aside from that the contact 18 is brought into the position shown in FIG. 1 (via the mechanical connection, which by the arrow 16. is symbolized), even if the contact was originally open. As for contact 23, when there is no current flowing through conductors 28 and 30, so will no power is supplied to the machine and the relay coil 26 cannot operate. The relay 24 is thus of the Power supply disconnected, and corfact 23 moves to terminal 29.

As soon as the machine is switched on the following morning, contact 14 closes. This has no effect on the Contact 18, which remains closed because the movement of the

109841/1204

Main on-off switch to the "on" position not to one mechanical movement affecting contact 18. When the contact 14 is closed, current flows through the conductors

28 and 30 to power the machine. As soon the power supply is switched on while no original document is being inserted into the machine, the Eelais is activated 24 supplied with energy. The contact 23 closes (in Fig. 1 position shown), and current flows from conductor 10 over contacts 14 and 18, conductor 50, contact 23, the motor 22, conductor 48 and conductor 12. The timing motor thus begins to rotate its output shaft.

If an original document is in the Machine is introduced, the relay coil 26 turns off and the Eelais 24 is de-energized as soon as the leading edge of the Document the transmission of light from the lamp 32 to the photodetector 34 blocked. Dj? Contact 23 jumps to the terminal

29 back, and the time motor 22 switches off. One on the The spring provided with a time motor brings the output shaft back to its starting position. At the time at which the Trailing edge. of the original document reaches the lamp 32, the motor shaft is in its starting position, there the motor shaft takes a very short time to return to its starting position. When the trailing edge of the original document Passing lamp 32 becomes the seiais 24 again supplied with energy, the contact 23 closes and the time motor starts a new cycle. This sequence is repeated as long as an original document is inserted into the Machine is inserted before one minute has elapsed since the last document. In such a case he completes Time motor no duty cycle.

109841/170 4

However, as soon as there is no original document in the machine for 60 seconds has been introduced, which is an indication that the machine is no longer in use, the time motor 22 completes its work Duty cycle. A cam on the motor shaft causes contact 18 to move from terminal 27 to terminal 25 as it is symbolically, is represented by the arrow 20. At this point, even if the contact 14 is still closed is, the contact 18 is open. The energy is separated from the machine and the machine switches off. At the same time jumps the time motor 22 returns to its starting position, since the relay 24 · is de-energized when the energy is switched off.

When the machine is to be used again and by the operator it is recognized that the machine is switched off, of course, the operator becomes the main on-off switch look. It is determined that the switch is in its "on" position. The fact that the Switch in its "on" position while the machine is off is an indication that the machine has some Time was automatically switched off beforehand. To turn the machine back on, the main on / off switch is turned off "On" position brought to the "Off" position. This has the effect that the contact 14- is in the position shown in FIG goes. This in turn has the effect of the mechanical connection, which is symbolized by the arrow 16, that the contact 18 passes from terminal 25 to terminal 27. Although the contact 18 is now closed, the machine remains switched off, since the main on-off switch is in the "off" position and contact 14 is open. From the operator is now only expected to bring the main switch to the "On" position, with the contact 14 closes. If the main switch is brought to the "On" position, this has no effect on contact 18, which thus

109841/120 A

remains closed. When contact 14 is closed, the machine is switched on again.

FIG. 2 illustrates the automatic shutdown device as it is installed in the copying machine 33. On the A toggle switch 35 is provided on the front of the machine, v / which is shown in its "on" position, the toggle switch directly controls the opening and closing of the contact 14, the contact being closed when the switch is in seire? "On" position. When the switch is moved in the direction of arrow 37 in order to switch off the machine, the switch lies against the part 31 which thus in the sighting represented by the arrow 4-3 emotional. The part is arranged in a recess 4-5, which extends through the front panel. That Part is provided with an elongated cutout 4-1 through which a screw 39 is passed and on the front panel is attached. The guide 4-5, the screw 39 and the cutout 41 limit the movement of the part back and forth in the direction of arrow 43-

The vertical bracket 54-a is located inside the machine. The time motor 22 is mounted on this bracket and the conductors 48 and 50 extend to the conductors 28 and 30. The timing motor, when energized, causes shaft 52 to rotate.

The shaft is coupled to various elements which are held together by nut 62. Immediately adjacent a spring 58, which can be seen most clearly in FIG. 4, is arranged on the vertical bracket 54a. One end of the spring is attached to the shaft 52, and that End 64 of the spring is wound around a screw 46 which ends in nut 68. The spacers 93 and 95

109841/1204

are on the screw 46 as shown in Fig. 2 ' arranged. When the engine is running, shaft 52 rotates in the direction shown by arrow 57 in FIG. As soon as the power supply to the motor is switched off, the spring 58 causes the shaft to return to its original position returns with the shaft rotating in the opposite direction to the direction shown by arrow 57. The disk element 56 is arranged on the shaft 52, around the spring 58 immediately adjacent to the retaining clip 54a to be included. The disc element includes a hub 56a, by which a set screw (not shown) is tightened against the shaft 52.

A disk 64, which has a honeycomb 64b (and the adjusting screw, not shown), is fastened to the shaft 52. The disk has a stop 64a, which is most clearly visible in FIG. 3. The cam 60, which has a hub 60a (and a set screw, not shown), is also attached to the shaft 52. Washer 97 separates cam 60 and nut 62. As best seen in FIG. 3, when shaft 62 rotates in the direction of arrow 57, washer 64 and cam 60 rotate clockwise. When the shaft has rotated for a minute, the cam comes into abutment on button 82 to depress it. The positions of the cam and the disc at the end of the one-minute run are shown in dashed lines in FIG. Once the motor circuit is interrupted, causing the spring 68, the shaft 52, the cam 60 and the disc 64 rotate against the ^u hrzeigersinn. When the disk rotates back into its starting position, the stop 64a comes to rest against the tab 59. This ensures that the shaft always returns to the same starting position.

The vertical hammer 54b is on the horizontal bracket 54c attached by screws 76a and 76b to a support surface attached to the machine. The camp 74 »which extends through brackets 54b and 54c, contains a cylindrical element 78 »against which the end of the part 31 lays. The microswitch 80 is on strut 72 attached to bracket 54a. How the clearest As is apparent from Fig. 3, the microswitch does not include only a button 82, which can be depressed by the crouch 60, but also a button arm 84. The Arm is rotatably mounted at 86 and is biased downwardly by spring 88 as shown. The microswitch includes an actuator 90 which when depressed by arm 84- causes the condition of the switch changes. In Fig. 3, the arm 84 and the element 78 are shown in the positions which they occupy when the part 31 is pushed in by the toggle switch 35. The dashed lines in Fig.3 show the positions of arm 84 and element 78, when the toggle switch is in its "on" position and the spring 88 pushes the arm 84 outward. On the top of Switch are two terminals 92 and 94, which are connected to conductors 11 and 28, respectively. When the button 82 is depressed (represented symbolically by the arrow 20 in FIG. 1), the connection between the terminals 92 is and 94 interrupted. On the other hand, it is when the actuating element 90 is pushed into the microswitch by the part 31 the connection between terminals 92 and 94 is established.

The operation of the microswitch is symbolic in the Figs. 5 and 6 shown. (Of course, many different types of conventional switches can be used When the part 31 is pushed into the machine,

109841/1204

As indicated by the arrow 73 in FIG. 5, the arm 84 is pressed against the force of the leather 88 upwards. The actuator 90 is similarly printed upwardly, as shown by arrow 75. The top of the actuating element rests on the Leiteaäement 79 * which is a conventional leaf spring. One end of the leaf spring is attached to the contact 9M- . The other end of each is equipped with a contact and a magnet 81 which can be attracted to either contact 92 or dummy contact 98. When the actuator 90 is pushed up, the magnet causes the spring 79 to remain engaged with the contact 92 and a circuit path to remain established between the terminals 92 and 94- · At the same time, the spring extension 79a rises against the button 82 in order to push it upwards according to the bar position indicated by the arrow 83. When the toggle switch is opened, the contact 18 in FIG. 1 (the contact 18 represents the circuit path between the contacts 92 and 9 ^) is brought into the closed position.

η / of the time motor, on the other hand, at any "end of the cycle" of the cam 16 causes the button 82 to be pushed down, as shown by the arrow 85 in Fig. 6. The button presses against the spring extension 79a which the spring 79. At this time the magnet is pulled to contact 98. Although terminal 94 is now connected to terminal 98, this connection serves no purpose in the illustrated embodiment of the invention Circuit between terminals 92 and 94 is interrupted. In this way, the machine can be switched off automatically as soon as 60 seconds have passed since the last original document to be copied was inserted into the machine.

- Claims 109841/1204

Claims (2)

Claims (iy Automatic shutdown device for a copier machine . with a main power line and with a first switch device in the same and a manually operable one Power switch to control the opening and closing of the first switching device, characterized in that that a timer device is provided that a second switch device is present in the main power line, that furthermore a device for resetting the timer device is present when an original document to be copied is introduced into the machine is that a device is further provided which is responsive to the completion of the operation of the timer device responds to open the second switch device and that finally there is a device which on the opening of the power switch responds to the second switch device close. 2. Automatic shutdown device for a copying machine according to claim 1, characterized in that it is marked the timer means is a timer motor having an output shaft with a cam thereon has, which presses against the second switch device during rotation in a predetermined position to the Main power line to open. 3 * Automatic cut-off device for a copier according to claim 2, characterized in that the timer motor has a reset spring to the output shaft to return to an initial position, which is based on the insertion of an original document to be copied responds to the machine. 109841/1204 Automatic switch-off device for a copier according to Claim 3, characterized in that the device for closing the second switch device has a mechanical connection which between the power switch and the second switch means is attached. Automatic shutdown device for a copier according to claim 4- »characterized in that the introduction of an original document to be copied into the machine is scanned by a device which a Photo-scanning device comprises, furthermore a lamp for illuminating the photo-scanning device by means of the in the machine has traveled the original document introduced and that a device is provided which is responsive to exposure of the photo scanner to energize the timer motor. Automatic switch-off device for a copier according to Claim 1, characterized in that the device for closing the second switch device has a mechanical connection which between the Power switch and the second switch device is arranged. Automatic switch-off device for a copier according to Claim 6, characterized in that the introduction of an original document to be copied into the machine is scanned by a device which a Photo-scanning device further comprises a lamp device to illuminate the photo-scanning device over the original document inserted into the machine Has traveled path and that a device is present which on the power supply of the photo-scanning device responds to supply the timer device with energy. 109841/1? (H. Blank page