DE1522552B1 - Electrophotographic copier - Google Patents

Description

after

However, devices have a number of disadvantages, in particular the guidance of the original can as an independent one that the straightening of the original in the case of a structural unit is based on repeated passes through the copier and suitable basic copier, which z. B. is satisfactory. If, with each pass, an outward-facing lighting table for the only slight tilting or inclination of the original can be put on, with all positions, then this error will add up when the passages are again driven by a single shaft to unbearable values. One can be widened and this possibly with the further disadvantage of the known devices is that they
require a complicated control device with a plurality of sensor switches arranged at different points on the device. 40

The invention is based on the object of providing a simple, cheap and reliable copier create, which avoids the disadvantages mentioned.

According to the invention, the object is achieved in that a first self-contained for the template Transport track on which the original leaving the lighting station returns to the feed point, and in front of the sensor switch, a second open transport path on which the lighting station is fed leaving original is ejected from the device, are formed and that a control device is arranged through which the template is optionally guided on the first or second transport path will.

Basic device can be coupled.

An embodiment of the copier of the invention is shown in the drawing.

Fig. 1 is a perspective view of an electrophotographic copier according to the invention;

F i g. 2 is a section according to 2-2 of FIG. 1;

F i g. 3 is a partial illustration of FIG. Figure 2 showing the parts in a different position;

F i g. Figure 4 is a top plan view of the device with the case removed;

F i g. Figure 5 is a fragmentary view taken substantially along 5-5 of Figure 1;

Fig. 6 is a schematic perspective view the counter and the associated control circuit.

Fig. 1 shows the copier, which with the general Reference numeral 10 is designated. The Kö

In a special embodiment, the control piercing device 10 is designed in such a way that there is an automatic device at the exit of the lighting station table either a single copy or a movable desired number of copies arranged in the transport path of a member in the device, which the original is in who can prepare a template given a position. The copier in the first and in the other position in the second device 10 contains a feed point 13 for the pre-transport path. The control device is 60
preferably designed as an adjustable switch.

According to a further embodiment of the invention are in the area of the self-contained transport path arranged side edge guides through which the original is straightened with each revolution.

These guides are designed in such a way that they can be accessed by a single adjusting element at the same time desired width can be adjusted. The situation with an input table 12 on which the template is placed and inserted into the device by hand. The copier also includes an output table 14 on which the original is ejected after the desired number of copies has been made. When an original is placed in the copier, it automatically becomes a sheet of recording material advanced from the storage box 16 and passed through the copier. The fer-

3 4

term copy is then output to an output table 18- The facility, through each at the right time encountered. a sheet of recording material is provided, the copier 10 includes a attachable construction is very simple. As can be seen from the drawing, unit 20 for the template, the details of which are shown in the sensor switch 40 not only through the an-F i g. 2 to 4 are shown. The structural unit 20 has 5 original legs introduced into the copier self-contained transport path 22 and one makes, but also through the repeated times open transport path 24 for the template. In the closed lane circulating template. It In addition, it contains an adjustable switch 26, so there is no need for additional sensor switches which arrange the template either in each case in the closed on the way of the template. Path 22 directs, the copier multiple times io The unit 20 is an independent and in itself passes through, or in the open path 24, whereby it is only closed component that is on a suitable Koeinmal passed through the copier and piercing device 10 can be put on, the one outside is expelled. has lying lighting table for the template. When a front placed on the input table 12 connects the structural unit 20 with the copy layer To simplify by hand at the feed point 13 in the Ko- 15 device 10, all drive shafts piercing device is introduced, it passes between one of the structural unit 20 of a single shaft of the Koobere Guide 28 (F i g. 2) and the lower guide piercing device 10 driven off. A drive gear gen 30 and 32 as well as between the feed rollers 34 86 (Fig. 2) is in engagement with gears of the back and 36. When the leading edge of the original touches the front feed roller 58 and shaft 74. When the If it leaves feed rollers 34 and 36, if it actuates a feed roller 58, it rotates, it also drives the shaft 74 Sensor 38 of a sensor switch 40. The closing, whose feed roller in frictional engagement with the previous one The switch causes a sheet of recording feed roller on shaft 72 to stop. It also drives Supply material from the supply stack of supply - the shaft 74 with the aid of a toothed belt 88 Box 16 advanced and with the feed unit also the shaft 80 and with the help of a further direction for the recording material in engagement 25, belt 90 toothed shaft 68. Shafts 66 and is brought and guided along a path 42, 78 are due to the frictional engagement of the feed rollers the in F i g. 5 is partially shown. driven by shafts 68 and 80.

The recording material is in order to tilt or tilt the original Ren feed rollers 44 and 46 taken and synchronously with repeated passage in the closed To prevent web 22 from passing through the copier with the original, copier 10 includes guides, with the original passing a lighting station 48, two front side edge guides 92 and 94 (Fig. 2) and the recording material a loading (Fig. 1, 2 and 4) and two rear side edge station 50 (Fig. 5) and an exposure station 52 guides 96 and 98. All of these guides are included happened. By means of a lens and a deflecting mirror using a single hand crank 100 (Fig. 4) becomes the same in a manner known per se, the image of the original 35 can be adjusted in time, the laterally (compare FIG. 1) projected onto the recording material so that protrudes on the copier. The edge guides this a charge image is generated. This allows you to use different widths of the original

The recording material will be adjusted by the rear.

ren feed rollers 54 and 56 from the exposure The rear edge guides 96 and 98 (Fig. 4) station led out and then in a developing 40 are angle irons with vertical flanges 96 a and a fixing station and a fixing station, whereupon 98 a, the against the side edges of the original it is ejected onto the output table 18. They lay and straighten them. The guides entVorlage is determined by the rear feed rollers 58 hold further horizontal flanges 96 b and 9SB, the and 60 from the illumination station conveyed out perform the underside of the document when the on and by a curved guide 62 of a comparable 45 closed path 22 via Guide plate 76 adjustable switch 26 supplied. advances. Each of the guides 96 and 98 contains a socket 102 connected to it with a pin 102 a, if only a single copy is to be made, the switch 26 is in the position of the in the helical grooves 103 of a rotary-F i g. 3, so that the original engages in the shaft 104 (FIG. 4), which is open to the open path 24. The grooves 103 is brought. The open path 24 is determined by 50. The shaft 104 has a fixed guide 64 in opposite directions from the center and a guide lip 26 a set the direction of inclination, so that the guides 96 and the switch 26. Two with the shafts 66 and 68 each come together Feed rollers 70 bound in the direction of rotation of the shaft 104 push the document out of the output table 14 while moving inwards or outwards at the same time. In a similar way, the guides 92 and 98 should, on the other hand, have a plurality of 55 each one socket 106 with a pin 106 a from the same template, which can be made in the number of copies, so the grooves 107 of a shaft 108 engages, the switch 26, which can be adjusted in the same way, into the position of FIG. 2 is designed like the shaft 104. The shafts, in which the template through a guide 104 and 108 are through a toothed belt lip 26 b of the switch 26 in the self-contained 110, which is over the pulleys 112 and 114 ge transport path 22 is brought. Here the 60 leads are connected to each other. The hand crank template through the feed rollers of the shafts 72 and 100 is advanced with an extension 108 a of the shaft 108 74 via a guide plate 76. The connected, so that the edge guides 96, 98, 92 template is then gripped by the feed rollers of the and 94 with a rotation of the hand crank 100 shafts 78 and 80 and adjusted by a middle one at the same time. This achieves guide piece 82 as well as an inner guide 84 on 65 that the one circulating on the closed path 22 is advanced in an approximately semicircular path until the template is straightened again with each rotation with the help of the lower guide 32,
the feed rollers 34 and 36 is brought. The edge guides 92 and 94 have horizontal ones

Flanges 92b and 94 & (Fig. 4) which rest on the recess 150 on its periphery. To produce a closed path against the underside of the template of a desired number of copies, the rotary switch and button 146 around the inner guide 84 (FIG. 2) lead to a more or less large angle. To straighten the original, the opposite to the in F i g. 6 rest position shown ver-edge guides 92 and 94 vertical flanges 92 a 5 rotates; a scale shows the number of set and 94 a, the above the input table 12 after copies. Here, for example, copies of an original can be made up to the outside (see FIG. 1) from the device. The protrude. Since the flanges 92 and 946 are visible, the rotary knob 146 has a rest or zero position, in and the template to be inserted on the input table 12 in which the recess 150 with the actuating member comes into engagement between these flanges 140 a, so that the switch 140 is orderly, it can be opened easily with the aid of the hand crank. In this case, the coil 116 is de-energized and 100 is set to the desired width of the original so that the switch 26 is actuated by the return spring 134. Since the shaft 104 is brought into its rest position with the shaft 108, in which the rotates, the edge guides 96 and 98 document are also guided into the open path. Is automatically adjusted to the same width. 15 against the rotary knob 146 from the rest position. As mentioned, if the copier 10 is turned out in such a way, the switch 140 is closed, so that it receives a coil 116 and the switch from an original, as desired in the or a desired number of copies to make the position of FIG. 2 brings, in which the template in can. Whether the original is fed through the closed path for repeated times, or whether the copier is circulating or not, depends on the position of the switch 26 in order to produce the desired number of copies. To actuate the len, has the copying machine counting means with switch a coil (Fig. 2 and 6) (6 g F i.) Is 116, the general reference character 152 (Fig. 6) Loading M by a control circuit 118 is operated. is drawn. It has a ratchet wheel 154 which causes the control circuit 118 to make the desired number of copies connected to the shaft 144 of the rotary knob. The setting is 25. When the rotary knob 146 is set to a desired number of copies by a manually operated set number of copies, the pawl direction shown in FIG. 6 is denoted by general reference wheel 154 a predetermined number of increments 120. The adjustment device or tooth pitches out of the rest position-120 contains a lock that moves one. A pivotable ratchet lever 156 switches the position of the switch as long as an original passes the switch 30 and the ratchet wheel 154 with each revolution of the original 26, thus backing up a clogging of the copier by one tooth pitch.

device is prevented. A counting coil 158 has an armature 159 which

The spool 116 includes an armature 122 (FIG. 2) hingedly connected to the pawl lever 156. which by means of a pin 124 with an intermediate member When the armature 159 when the coil 158 126 is connected. Another pin 128 connects 35 against the action of a spring 157 down gedas Intermediate link 126 with a lever 130. The ratchet wheel is pulled by one step Lever 130 is connected back to a shaft 132 (FIG. 4). The counting coil 158 is through a the. The shaft 132 includes a bushing 130 a. The circuit 161 is fed, which the counting coil 158 Diverter 26 (Fig. 2) is connected to shaft 132, each time an original is energized which runs between the guide lips 26 a and 28 a 40 through the copier 10, is arranged. Every time the original passes the feed

When the coil 116 is de-energized, the switch will roll 34 and 36 (FIG. 2) happens, it actuates the sensor 38 by a _{return spring 134 in the rest position and thus the sensor switch 40. If Λ} of FIG. 3 is held. However, if the coil 116 receives via the sensor switch 40 closes, a sheet is switched on \ the control circuit 118 current, so the switch 45 drawing material is pivoted on the track 42 (Fig. 5) in the clockwise direction of Fig. 3, so that brought so that it is between the feed rollers 44 and them in the position of FIG. 2 arrives in which the 46 arrives. Here, a sensor 162 actuates a template in the self-contained transport path, sensor switch 164 (FIGS. 5 and 6). When the sensor is guided, closing repeatedly through switch 164, a relay 166 (Fig. 6) keeps the copier circulating. 50 electricity. When relay 166 responds, it closes

The control circuit 118 (FIG. 6) contains two ends of the contact 166a, so that a full-wave rectifier connecting terminals 136 and 138, which receives 168 current with the alternating current. The output of the full-wave direct current network are connected. The circuit 118 contains the converter 168 is connected to the counting coil 158, a control switch 140 for the switch, which is in series every time a document hits the feed rollers 34 with the coil 116 being passed to the output terminals of a 55 and 36, the control circuit 118 therefore resets Full-wave rectifier 142 is placed, the input of which the counting coil 158 is energized and switches the KHnklemmen kenrad 154 connected to terminals 136 and 138 back one step, are. The control switch 140 is normally open. The control circuit 118 further includes a hold; it is closed when an actuator switch 170 (Fig. 6), which is parallel to the contact a is depressed; when this happens, 60 166 a is switched. The hold switch 170 is behind coil 116 holds current. the feed rollers 54 and 56 (Fig. 5) arranged.

In order to set the copier to a suitable position, because the recording material is driven by the feed rollers 54 desired number of copies is made one copy and 56 happens at the same time that the direction 120 (Fig. 6). The adjustment device 120 template passes the feed rollers 58 and 60, can contains a shaft 144 which, with a rotary knob 146 65, does not put the hold switch 170 in its rest position (cf. also Fig. 1) is connected, which return on the side before the template the switch 26 verdem Copier sticks out. The shaft 144 (Fig. 6) has let. The hold switch 170 holds the counting coil carries a control or cam plate 148 with a 158 therefore after the recording material

Switch 164 (FIG. 5) has left, under power, until the original has emerged from the switch 26. the Counting device is therefore not able to adjust the switch 26 as long as a template is in the Switch is located.

While the last copy is being made, the ratchet wheel 154 returns to its original position, so that the control switch 140 is opened and the switch 26 returns to its rest position. To Making the last copy, the template is therefore fed into the open transport path 24 so that they is ejected onto the discharge table 14 by the rollers of shafts 66 and 68.

If only a single copy is to be made from an original, it is not necessary to use the Adjustment device 120 to operate. The original is then simply inserted into the copier by hand, a single copy is made automatically. To prevent the adjustment device 120 is operated while a single copy is being made, includes ratchet 154 an incision 154 a, over which the ratchet lever 156 slides without operating the ratchet wheel. In this case, the counter 152 cannot move the setting device 120 out of the rest position move out. This can only be done by operating the rotary knob 146 by hand.

The adjustment device 120 has one designated by the general reference number 172 (FIG. 6) Locking device that prevents an original from becoming jammed in the copier. If the rotary knob 146 and thus the switch were accidentally actuated during a template the switch passes in the position for the open path, the template would be between the guide 64 and the switch 26 become jammed and clog the machine.

In order to prevent the rotary knob 146 and the shaft 144 from being operated when the switch 26 is in the rest position of FIG. 3, the locking device 172 has a locking lever 174, which normally lies against the top edge of the pawl lever 156. The lever 174 has one Extension 174 a, which lies against the circumference of a bushing 178 connected to the shaft 144. the Bush 178 has a recess 180.

When the rotary knob 146 is in the rest position of FIG. 6 returns, the recess comes 180 in Engagement with the extension 174 ″ of the locking lever 174 when the counting coil 148 receives power to pulling the ratchet lever 156 downwards. When the counting coil 158 is de-energized, the armature moves 159 moves upwards and lifts the extension 174 a out of the recess 180. When the counting coil 158 but is energized, the extension 174 a locks the control or cam disk 148, so that this and the rotary knob is held in its rest position. The control switch 140 can therefore not be closed are, and the switch 26 is held in its rest position. Since the counting coil 158 under Power remains until the recording material advancing synchronously with the original presses the hold switch 170 has left, the switch cannot move from the rest position of FIG. 3 moved out before the template has left the switch.

The operation of the copier 10 is as follows: The operator places an original the input table 12 and sets the edge guides 92, 94, 96 and 98 with the aid of the hand crank 100 the width of the original. If multiple copies are to be made, the rotary knob is turned 146 set for the desired number of copies. If the rotary knob 146 is operated in this way, the control or cam disk 148 closes the switch 140 and the switch 26 into the working position of FIG. 2 brought in which the template in the self-contained transport path is performed because the coil 116 receives power. The template is then fed into the feed point 13 Copier inserted so that the sensor switch 40 operated and automatically a sheet of recording material advanced synchronously with the original onto path 42 and guided into exposure station 48 will. The switch 26 is then in its working position by the closed control switch 140 held and repeated the template over in the self-contained path 22 at the lighting station 48 led along. With each revolution of the original, the counter 152 switches the Wave 144 back one step.

If the template actuates the sensor switch 40 at the start of the production of the last copy, it switches the counting device 152 the ratchet wheel 154 back to its original position, so that the control switch 140 is opened and the switch 26 in the rest position of FIG. 3 returns. The switch 26 is now held in the rest position as the locking device 172 locks the shaft 144 until the Recording material has left hold switch 170, i. that is, until the original has emerged from the switch is.

Claims (12)

Patent claims: 1. Electrophotographic copier with a particular by rollers and guides. The like Transport path for the original, a transport path for the recording material, a feed point at which the original is introduced into the device, a lighting station and a development station and with a sensor switch in the transport path of the original, which is between the feed point and the lighting station and its actuation causes a sheet of recording material is advanced and guided past the exposure station, characterized in that that for the template a first self-contained transport path (22) on which the Lighting station leaving template again the feed point (13), namely before Sensor switch (40), a second open transport path (24) on which the lighting station Leaving original is ejected from the device, are formed and that a control device is arranged through the the template is optionally guided on the first or second transport path. 2. Copier according to claim 1, characterized in that the control device is an on The exit of the lighting station has movable member arranged in the transport path, which the original in one position in the first and in the other position in the second transport track directs. 3. Copier according to claims 1 and 2, 909587/163 I 522 ίο characterized in that the control device is designed as an adjustable switch (26) with an inner guide lip ( 26b) which causes the original to be deflected onto the self-contained transport path. 4. Copier according to claim 1 or 2, characterized in that in the area of the in itself closed transport path (22) lateral edge guides (92, 94, 96, 98) are arranged _the come into engagement with the original and this with each pass through the copier straighten it. 5. Copier according to claim 4, characterized in that the edge guides are adjustable formed and the adjusting devices are coupled to one another, so that the setting all guides to the width of the original simultaneously through a single, from the copier outstanding hand crank (100) or the like. Can be effected. so 6. Copier according to claim 4 or 5, characterized in that the on the way of Template arranged edge guides are arranged behind the lighting station (48) and up to the feed point (13) of the template stretch. 7. Copier according to one of claims 1 to 6, characterized in that a counting device (152) is provided which has a manually operated actuator (shaft 144 with rotary knob 146) contains a control disk (148) which, when the actuator is moved from the zero position a switch (140) is actuated, which switches the switch to the position for the self-contained one Transport path causes. 8. copier according to claim ?, characterized in that the manually operated actuator (Shaft 144 with rotary knob 146) with a ratchet wheel operated by a ratchet lever (156) (154) is connected, which is set back by one tooth pitch with each pass of the template will. 9. A copier according to claim 8, characterized in that the ratchet wheel (154) has a Has cutout (154 a), the adjustment of the ratchet wheel by the ratchet lever in the Zero position prevented. 10. Copier according to claim 9, characterized in that the ratchet lever with the Armature (159) of a counting coil (158) is connected by a at the feed point of the recording material arranged sensor switch (164) is operated. 11. Copier according to claim 10, characterized in that a second sensor switch (170) is arranged at the exit of the exposure station (52) is, which is operatively connected in parallel to the first sensor switch (164) so that the Counting coil (158) is kept under power after switching off the first sensor switch until the Recording material has left the exposure station. 12. Copier according to one of claims 8 to 11, characterized in that a locking lever (174) is provided, which in the zero position of the manually operated actuator (shaft 144, etc.) engages in a cutout (180) of the same and by the ratchet lever (156) from the Cutout is lifted when the counting coil (158) is de-energized. 1 sheet of drawings