Compact photocopying machine

A compact, readily servicable, office photocopying machine is provided which has pivotally connected upper and lower housing parts. A paper cassette receiver for holding a stack of coated photosensitive copying paper sheets is located at the bottom of the lower housing part. The lower housing part also operably supports a charging station, an exposing station, a developing station, and a fixing station arranged above and within the vertical projection of the stack of sheets in the cassette receiver. A sheet separating station for separating individual sheets from the cassette and a paper reversing guide are provided for transferring individual sheets from the cassette to the charging station. The exit end of the paper reversing guide and the separating station are also arranged above and within the vertical projection of the stack of sheets in the cassette receiver. A slide block with a holder for an original to be copied and an optical system are operably supported at the upper housing part.

BACKGROUND AND SUMMARY OF THE INVENTION 
The invention relates to a copying machine, especially a small photocopying 
machine for an office. The photocopying machine of the invention has a 
receiver for a cassette which carries a stack of coated photo-sensitive 
sheets, a separating station, a charging station, an exposing station 
provided with an exposing window, a developing station provided with a 
magnetic roller, and a fixing station provided with a pair of pressing 
rolls, all arranged in a lower housing part. The machine of the invention 
also has an optical system and a receiving slide block for an original to 
be copied arranged in an upper housing part, the upper housing part being 
movably supported at the lower housing part. 
In previously contemplated photocopying machines the receiver for the 
stacked paper cassette and the separate stations or devices are arranged 
one behind the other on a rail so that the separate devices are visible 
and accessible upon the opening of the machine housing. This arrangement 
provided a machine that exhibited a cross-sectional shape corresponding to 
approximately 2 1/2 times the length of the format of the paper to be 
copied. In practice the trend has been toward the positioning of these 
copying machines at personnel work stations so that the required travel to 
a centrally located copying machine is spared. In order for the machines 
to be placed without hindrances in the area of the workstations there is a 
requirement for the smallest possible and most compact copying machine 
that requires little space. 
The invention relates to the problem of providing a copying machine of the 
above mentioned kind, which is constructed as small and compact as 
possible, without impairing the servicing accessibility to the separate 
operating devices. This problem is solved according to preferred 
embodiments of the invention by providing that the receiver for the 
cassette is arranged on the housing floor and parallel thereto, with a 
paper reversing guide connected to the cassette receiver and exhibiting a 
sheet turning angle of approximately 220 degrees in the upward and 
opposite direction with respect to the cassette receiver. A charging 
device and exposing station follow the paper reversing guide with a 
downwardly, inclined travel path therethrough with respect to the housing 
floor. The end of the paper reversing guide, the charging device, the 
exposing device or station, the developing station and the fixing station 
are arranged one behind the other within the upward vertical projection of 
the length of the sheets in a cassette held in the cassette receiver. 
Through this above-noted construction, a copying machine is produced which 
exhibits an area which is not much larger than the size of the format to 
be copied, corresponding to the format of the stack of papers, so that an 
exceptionally small and compact copying machine is provided. Because the 
separate elements or stations, which in any event require examination or 
servicing, are arranged one behind the other in the copying machine 
housing lower part, a good accessibility and ease of servicing is 
guaranteed. Additionally, the arrangement provides for a very short 
transport path for the copying paper, thus removing the need for 
intermediate paper guides and additional paper transport elements so that 
construction costs are minimized. 
These and further objects, features and advantages of the present invention 
will become more obvious from the following description when taken in 
connection with the accompanying drawings which show, for purposes of 
illustration only, a single embodiment in accordance with the present 
invention.

DETAILED DESCRIPTION OF THE DRAWINGS 
The copying machine according to FIG. 1 possesses a lower housing part 11 
and an upper housing part 12 which are connected to one another through a 
pivot axis so that the upper housing part 12 is movable away from the 
lower housing part 11. In the lower housing part 11 a receiver 1 for a 
cassette 2 is provided which extends immediately above the and parallel to 
the floor. The machine lower housing part 11 includes a floor plate 3 
formed as a spray cast metal part, which floor plate 3 forms the underside 
of the receiver 1. The receiver 1 is bordered on the sides by plastic 
members 13 and 14 which are screw threadedly attached to the floorplate 3. 
The receiver 1 is bordered at the top by means of a thin metal plate 104, 
which plate 104 is attached to the lower housing part 11, adjacent the 
opening for the receiver 1(right side of the FIG. 1 illustration). In 
order for the stack of papers in the cassette 2 to have free ends in the 
area of a separating station 15, the end of the cassette which slides into 
the copying machine is cut or slit from the floor upward. The thin elastic 
bendable plate 104 extends into the area of the separating station 15. The 
bearing or support for the plate 4 is bordered from above by the 4-sided 
shaft 16 belonging to the separating station 15. 
The separating station 15 includes 2 separating rollers 19 and 20 made of 
rubber or other elastic material (see also FIGS. 4 through 6). Separating 
rollers 19 and 20 are driven and are lowerable to accommodate separating 
sheets from the sheet stack 18. The separating station further includes 
corner separators 21 constructed with vertical plate parts which border 
the corners of the stack of sheets and a triangular shaped plate part 
which engages the stack of sheets from above. The corner separator 21 are 
components of two plates 23, which can be lowered from the FIG. 1 shown 
raised position so that the triangular shaped plate parts lie closely 
adjacent the stack of sheets 18. Plates 23, which through a 4-cornered 
cross shaft 24 are binded together, are located in an opening in the 
floorplate 3 and on a shaft 26 which is vertically guided in slotguide 25. 
These plates 23 and the corner separators 21 are together with the 
separating rolls 19 and 20, shown in FIG. 1 in its raised position, raised 
and lowered by a lifting device. 
The lifting device consists of the above mentioned rotatable 4-sided shaft 
16, on which two lever arms 17 are mounted. The lever arms 17 grasp and 
receive from underneath the shaft 27 associated with the separating rolls 
19 and 20 (see FIG. 4). The 4-sided shaft 16 is raised and lowered in a 
pre-determined time sequence explained in more detail below. Two sheet 
springs 33 are mounted on the 4-sided shaft 16. These sheet springs 33 
extend into opening 34 and grasp the paper hold-down 22 which is arranged 
to be pivotal about a pivot axis so that its paper contacting part is 
lowered so far upon the raising of the corner separators and the 
separating rollers 19 and 20, that the sheets of the sheet stack 18 cannot 
be placed over the area of the corner separators. When the separating 
rollers 19 and 20 and the corner separators are lowered by means of the 
turning of the 4-sided shaft 16, the sheet-springs 33 lift the paper 
hold-down 22 upwardly. 
A paper turn-around or reversing guide 4 is provided adjacent the 
separating station 15 for guiding and turning the sheets of paper through 
a reverse angle of approximately 220 degrees from their position where 
they are taken-up from the cassette 2. The cassette 2 is so filled with 
the sheets of paper that the coated sides of the pages face downwardly so 
that the separating rollers 19 and 20 engage the uncoated reverse sides of 
the sheets. The reversing guide 4 includes an outer shell 37 and an inner 
shell 38. The outer shell 37, on which the sheets are guided with their 
coated sides, is constructed of plastic. The shell 37 is further provided 
with ribs extending in the transport direction so that a very small 
reduced sliding surface is in contact with the paper. The inner shell 38 
is made out of aluminum sheet metal which has stamped diagonal ribs 39 of 
sawtooth roof type configuration whereby the paper sheets are guided only 
on the tips of these cross ribs 39. The outer shell 37 is provided with 
side rims or borders which are connected to the inner shell 38 by means of 
screws not shown in detail, so that the reversing guide 4 is formed as a 
closed channel. The distance between the two approximately cylindrically 
shaped shells 37 and 38 is reduced continuously in the transport direction 
so that a diminishing size channel results. 
Immediately following the reversing guide 4, a pair of drawing off rollers 
35 and 36 are provided that are driven at a slightly faster speed than the 
separating rollers 19 and 20. The separated sheets are initially pushed 
along the outer shell 37 of the reversing guide 4 by the separating 
rollers 19 and 20. When the sheets are taken over by the drawing off 
rollers 35 and 36, they are lightly pulled over the tips of the cross ribs 
39 of the inner shell 38. The outer shell 37 of the reversing guide 4 is 
provided with two side projections 40 and 41 in the area of the upper end 
(FIG. 14). By means of these projections 40 and 41 the outer shell 37 is 
hanged in the openings 42 and 43 of sidewalls 44. Sidewalls 44 are 
constructed from sheet metal plates which are fastened to the floorplate 3 
of the housing lower part 11. The lower end of the outer shell 37 is 
provided with vertically downwardly extending protusions 105 (FIG. 14) 
which are inserted into openings in the floorplate 3. The reversing guide 
4 can be removed in a simple manner as a unit in the upward direction from 
the housing lower part 11. The outer shell 37 of the reversing guide 4 is 
furthermore provided with a vertically jutting fishplate 106 in the area 
of its upper end, which fishplate 106 juts into the housing upper part 12 
when the housing parts are closed together, to thereby activate a switch 
arranged to connect the electrical operating circuit. The copying machine 
can therefore only be activated when the housing is closed and when the 
reversing guide 4 is in position. 
The drawing off roller pair 35 and 36 includes a metal roller 35 and a 
spring pressed rubber roller 36. A charging station 5 is connected to and 
arranged adjacent to the drawing off roller pair 35 and 36. Charging 
station 5 is constructed as a unit along with a light exposing window 6 
located immediately adjacent the charging station 5. A common guideplate 
45 extends adjacent the charging station 5 and the exposing window 6. The 
charging station 5 and the exposing window 6 are disposed in a common 
housing 47 which has a plastic body 107. The plastic body 107 includes a 
middle section and two endparts 108. In the middle section there is a 
charging plate 109 with a U-shaped cross section (FIG. 9) which is 
connected with contact 50 formed as an upwardly extending fishplate with 
respect to the housing 47. A Tungsten wire 110 is stretched across the 
middle section inside of the charging plate 109. Tungsten wire 110 leads 
to a contact 49 at a high voltage rectifier in the endpart 108. The other 
end of the Tungsten wire 110 is connected to the hinge leg of a hinge 
spring 111, arranged in the other endpart 108. 
A cross sheet metal part 112 extends between the endparts 108 and, with the 
middle part, forms an upwardly and downwardly open frame which borders the 
exposure window 6. Nylon threads 48 are hanged in hooked formed parts at 
the charging plate 109 and the cross plate 112, at least in the region of 
the guiding plate 45. The thin nylon threads 48 guide an incoming sheet in 
the area of the charging station 5 and the exposure window 6 very exactly. 
Because of the very close spacing of the charging station 5 and the 
exposure window 6 adjacent one another there occurs no loss of charge 
between the charging station 5 and the exposure window 6. Thus the loading 
or charging current can be maintained relatively low and still maintain 
saturation. Further, there is only a very small sized ion cloud which 
leads to a very minimal ozone development. 
Both endparts 108 of the plastic body 107 are provided with side protusions 
113 so that the unit can be inserted from above into recesses 46 of the 
side walls 44 of the housing lower part 11 (see FIG. 14 for a showing of 
sidewall 44 and opening 46). The housing upper part 12 is provided with 
spring contacts engageable with the contacts 49 and 50 so as to assure the 
operability of the machine. The guideplate 45 is also placed in the same 
openings 46, with the openings 56 including corresponding abutments. Both 
endparts 108 of the plastic body 107 are disposed slightly above the level 
of the tension nylon threads 48 and lay on the guideplate 45. In this way 
the guideplate is secured in an exact guideslot position in the opening 
46. 
Immediately following the construction unit including the charging station 
5 and the exposuring window 6 are a pair of transport rollers 51 and 52. 
The transport roller pair 51 and 52 is disposed in line with the transport 
direction defined by the draw off rollers 35 and 36 and the guideplate 45. 
The transport rollers 51 and 52 are driven with a slightly higher 
rotational speed than the draw off rollers 35 and 36 so that the sheets 
traveling in the region of the charging station 5 and the exposure window 
6 are optimally tensioned. From FIG. 1 it is easily seen that the complete 
separating station 15 is arranged inside of the space between the end of 
the receiver 1, the reversing guide 4 and the unit formed as the charging 
station 5 and the exposure window 6. 
The transport rollers 51 and 52 exhibit a paper travel direction which is 
inclined onto a guideplate 8 which connects with a developing station. The 
guideplate 8 includes a first section which extends parallel to the 
receiver 1 and the floorplate 3 up to the position of magnetic roller 54. 
The second part of the guideplate 8, which begins under the magnetic 
roller 54, is slightly inclined in the upward direction and leads to the 
pressing rollers 9 and 10 of the fixing station. The guideplate 8, which 
preferably is manufactured of pressurized metal casting, is advantageously 
connected with a housing 55 that receives the magnetic roller 54 and forms 
a reservoir 53 for toner material. The region of the reservoir 53 is open 
in the upward direction to accommodate a filling opening. This region is 
covered by a cover 57 which is fixed to the upper housing part 12 by means 
of an elastic base 115. Upon opening movement of the housing upper part 
12, the filling opening of the reservoir 53 is open, while with a closed 
housing, this opening is securely sealed. The housing part 55 is provided 
with metal inserts for accommodating the bearings for the magnetic roller. 
By means of these metal inserts, the developing station is insertable from 
above into the upwardly open opening 56 of the sidewalls 44 (FIG. 14) of 
the machine housing lower part 11. The securing of the development station 
7 in place results from the pressure from the upper housing part 12 via 
the cover 57 and the elastic base 115 attached thereto. A cross strut or 
support 116 is provided which the guideplate 8 is furthermore supported 
by, thus guaranteeing a secure holding of the assembly. 
Following the developing station 7 is a pair of pressing rollers 9 and 10 
of a fixing station. Pressing rollers 9 and 10 are arranged one above the 
other in an inclined plane which extends perpendicular to the extension of 
the exit section of the guideplate 8. The lower pressing roller 9, which 
is provided with a driving gear wheel 78, is arranged to extend at a right 
angle to the travel paper path direction. The upper pressing roller 10, 
disposed opposite the lower pressing roller 9, is disposed at an angle of 
about 1 degree to the axle of the roller 9 in order to counteract and 
balance the bending experienced by the rollers during operation. Pressing 
rollers 9 and 10, which are constructed as massive steel rollers, are 
carried by roller bearings 61 and 62 in bearing blocks 58 disposed as 
single units at each end of the rollers. The bearing blocks or supports 58 
are provided with two half cylindrical bearing seats for receiving the 
outer rings of the roller bearings 61 and 62. 
The bearing supports 58 are manufactured as case hardened castings. After 
the casting is formed, a slot 63 is cut-out of the respective bearing 
blocks 58, which slot 63 is disposed in the region of the bearing seat 59 
for the lower pressing roller 9. The slot 63 extends approximately 
perpendicular to the extension between the bearing seats 59 and 60 of the 
bearing blocks 58. The sides of the slot 63 are formed with protusions 64 
and 65, which by means of a screw 117 and a compression spring 66 are 
resilently connected. The screw 117 and the spring 66 extend parallel to 
the extension between bearing seats 59 and 60. Both pressing rollers 9 and 
10 move with respect to one another slightly during operation with paper 
sheets passing therethrough, which movement is accommodated for in the 
bearing supports 58 by means of the elastic arrangement. The movement 
occurs in a definite region between the upper bearing seat and the lower 
bearing seat which is connected together by the screw 117 and the pressure 
spring 66 by way of the extensions of the bearing block 58. The elastic 
deformation of the bearing block 58 and the affected region is reduced due 
to the movement permitted at the slot 63 between the relative parts of the 
bearing seat 59 along the bearing outer ring of the ball bearings 61, 
dampened by the screw 117 and pressure spring at the extensions bounding 
the slot 63. A bending in the region of the bearing seats 60 is therefore 
prevented. Above on the bearing blocks 58 clamping holders 118 are 
provided which receive a cleaning stripper 119 which has a felt covering 
engagable with the upper pressing roller 10. Furthermore, a cleaning 
stripper 120 is arranged on the bearing support 58, with several 
springlike sharpened cut-out tongues 121 laying on the circumferance of 
the lower pressing roller 9. This stripper 120 serves further for the 
fastening of the cover plate 104 covering the receiver 1 for the copying 
paper. 
The housing upper part 12 is dimensioned with an opening or space in the 
region of the pressing roller 10 so that the entire height of the copying 
machine is only insignificantly higher than the height required by the two 
pressing rolls 9 and 10. In the remaining region of the upper housing part 
12, the optical system is provided. A halogen lamp 93 with an adjacent 
elliptically curved reflector 122 is arranged near the region of the upper 
pressing roller 10. The reflector 122 directs the light of the halogen 
lamp 93 to a light slot in the upper side of the upper housing part 12, 
which light is then directed by means of mirror 94 to objective glass or 
lens 9 so that the light is directed via a further mirror 95 to exposing 
window 6. The objective lens 96 (FIG. 11) is held by a tensioning band 123 
and an adjusting screw 124 for accommodating adjustment of the focal 
length in the axial direction. The tensioning band 123 is secured to a 
ball cap shaped guiding part 125 movably disposed on a ball head of a 
holder 126. The holder 126 is slidably adjustably fixed to the upper 
housing part 12. The objective lens 96 can therefore be adjusted in a 
simple manner in the axial direction for adjusting the focal length and 
also in cross directions and in its inclination. 
Both mirrors 94 and 95 are adjustably installed at the housing upper part 
12, which upper part 12 is advantageously constructed of spray or pressure 
cast metal. Each mirror 94, 95 is held by three adjusting screws 127, 128, 
and 129 so that by means of adjustment of all of these screws 127, 128, 
and 129 as well as separate ones of the screws, the necessary positioning 
of the mirrors 94 and 95 can be exactly adjusted. 
The halogen lamp 93 is also to a certain extent adjustable. The halogen 
lamp 93 is held by two contact supports at the upper housing part 12, of 
which the contact 130 (FIG. 14) is swingable about a fastening screw 131 
so as to accommodate the adjustment of the position of the halogen lamp. 
The brightness of the halogen lamp 93 is adjustable by way of a phase 
controller. This adjustment is effected by means of a potentiometer 132 
which is adjustable by means of turning knob 133 extending through the 
servicing side of the machine (see FIG. 11). 
The machine housing upper part 12 carries a lengthwise moveable slide block 
67, which slide block serves to accommodate receipt of original sheets to 
be copied. The slide block 67 includes a glass plate 68 which is received 
and carried at a carrying rail 70 by means of an adhesive band 135 (see 
FIG. 10). A pressing cover 73 lays on top of the glass plate 68, which 
cover 73 is formed of rubber like or elastic material and is provided at 
its underside with a white plastic coating. A stop or recess 137 is 
provided on the glass plate 68 at the right side as shown in FIG. 1 for 
accommodating the placement of an original to be copied. The pressure 
cover 73 includes a thin section in the region of its attachment at the 
carrying rail 70, which thin section serves as a hinge. The glass plate 68 
and the pressure cover 73 are connected to the carrying rail 70, together 
with a clamping ledge 72, by means of clamping screws 138. The 
longitudinal guidance for the glass 68 results at one side of the housing 
upper part 12 by means of a cut-out sharpened guiding rail 69 and on the 
other side by means of a sliding guide 71. The carrying rail 70 is 
connected with the sliding guide 71 by means of a profile 139 which is 
arranged at an angle inside a groove at the upper side of the housing part 
12. 
The copying machine is provided with only one driving motor 140, by which 
all of the movements as well as the paper transport and the exposing 
apparatus are handled. The driving motor 140 is disposed in the housing 
lower part 11 in a region opposite the end region where the pressing 
rollers 9 and 10 are situated. Since FIGS. 12 and 13, for example, are 
views taken in a direction from behind and upwardly out of the paper from 
the FIG. 1 illustration, the motor 140 appears at the left side of FIG. 1 
and the right side of FIGS. 12 and 13. The motor is provided with two 
driving trunions, whereby one driving trunion carries a fan wheel 141 of a 
cross flow fan. In this area adjacent the driving motor 140 and the fan 
wheel 141 there is located a not illustrated high tension rectifier for 
the charging station 5. 
The driving motor 140 drives the lower pressing roller 9 and the magnetic 
roller 54 of the developing station 7 by means of a first chain drive. The 
driving elements are located at the backside of the housing wall at the 
servicing side of the machine housing, outside of the side walls of the 
housing lower part 11 in a region which is covered by a cover member 
(spaced laterally from the vertical projection of the originals being 
copied and the travel path of the sheets passing through the machine). The 
driving motor 140 is provided with a first gear wheel 76, which by means 
of chain 77 drives gearwheel 78 for the lower pressing roller 9 and 
gearwheel 79. Gearwheel 79 has a toothed wheel 142 rotably fixed therewith 
for driving magnetic roller 54 by means of the connected toothed wheel 
143. A tensioning wheel 144 is provided for tensioning the chain 77. 
The driving motor 140 drives a second gearwheel 80 connected by chain 81 to 
gearwheel 82, gearwheel 83, and gearwheel 84. Furthermore, a tensioning 
gearwheel 85 is provided for this chain 81. The gearwheel 83 is arranged 
for driving of the drawoff rollers by means of an interposed electrical 
magnetic coupling. The gearwheel 84 is rotatively fixed to the transport 
roller 51. 
A third chain drive is connected to the second chain drive, for driving the 
slide block 67 by means of the chain 75. The chain 75 extends over driving 
gearwheel 145 and a reversing and tensioning gearwheel 146. The gearwheel 
145 is coaxial to the gearwheel 82 and rotatably fixed therewith. The axle 
of the gearwheels 145 and 82 furthermore form the pivot axis 147 about 
which the upper housing part 12 is pivotable with respect to the lower 
housing part 11. 
At the slideblock 67, that means at the carrying rail 70, a bracket or 
connecting link 47 is provided, in which a carrying lug 103 of the chain 
75 is engagable, so that the slideblock 67 moves back and forth upon the 
movement of the chain 75. The reversing of the movement direction results 
when the carrying link 103 travels around the gearwheels 147 and 146. A 
carriage 86 is provided in the movement path of the bracket 47, which 
carriage 86 is slidable in the longitudinal direction of the machine. 
Carriage 86 includes two protusions 148 and 149, which protusions are 
engaged by bracket 47 at the reversing positions of the slideblock 67, 
whereby the carriage 86 is moved. 
The bracket 47 also activates a tip lever 150 which belongs to the lifting 
device for the separating rollers 19 and 20 and the corner separators 21. 
The tip lever 150 possesses a hook portion 151 which is carried in only 
one of the movement directions of the bracket 47, namely (FIG. 13) in the 
direction in which the slideblock 67 travels to its start position. The 
tip lever 151 engages a part 152 which is connected with 4-sided shaft 16 
by means of lever arms and turns in order to raise and lower the 
separating station 15. The tip lever 151 is secured by a stopping spring 
153 in the FIG. 13 illustrated position, in which the separating station 
15 is in the raised position. A pick-up catch 154 is provided on the 
carriage 86 which swings the tip lever 150 away from its given position 
when it previously has been brought into the other position by the bracket 
47. A microswitch 98 is also activated by means of cam 155 carried by the 
chain 75 dependent upon the movement and the position of the slideblock 
67. 
By way of the carriage 86 a further microswitch 99 is controlled by the 
attachment 156. This microswitch 99 serves for activating the halogen lamp 
93 and the high voltage rectifier for the charging station 5. By means of 
the tip lever 150, a further microswitch 92 is controlled. A further 
switch element is arranged as a so-called ring switch on the driven 
draw-off rolls. This ring switch is connected as a ring 88 which runs 
loosely in a groove at draw-off rollers 35 and 36, the position, of ring 
88 being determined by a switch arm 89 and carried on a switch shaft 90, 
which activates one of the microswitches 91 arranged at the copying 
machine front side (FIG. 14) by means of a further switch arm 159 which is 
adjustably positioned by adjustable screw 158. 
The driving motor 140 is started by means of a start switch 97, which 
simultaneously serves as the copy selection switch and which is arranged 
on the servicing side of the copying machine. With activation of the start 
switch 97, the driving motor 140 is started. Then the chains commence to 
run. The chain cams 155 leave the microswitch 98 which had initiated the 
driving motor. With the slideblock 67 movement (FIG. 13 in the leftward 
direction), the bracket 47 activates the tip lever 150 so that the same 
jumps out of its shown position in FIG. 13 and the separating rollers 19 
and 20 and the corner separators 21 are lowered down to the paper stack 18 
by means of the rod 152 activated lifting apparatus. Simultaneously the 
microswitch 92 is activated, which switches on the electromagnetic 
coupling of the driven draw-off roller 35, so that this runs together with 
the separating rollers 19 and 20. The sheet of paper taken from the paper 
stack 18 by the separating rollers 19 and 20 travels over the paper 
reversing guide 4 to the draw-off rollers 35 and 36. The incoming paper 
edge activates the there positioned ring switch 88 in a manner that the 
electromagnetic coupling of the driven draw-off roll 35 is shut-off by the 
microswitch 91. The paper sheet is then in an exact predetermined 
position. 
When the slideblock 67 reaches its first turning point, the bracket 47 
takes the carriage 86 with it and shoves it from the FIG. 13 illustrated 
ground position to the other end position. Thereby the microswitch 99 is 
activated by the part 156 so that the halogen lamp 93 and the high voltage 
rectifier are turned on. Simultaneously the protrusion 154 of the carriage 
86 activates the tip lever 150 which is then brought back to the FIG. 13 
illustrated ground position. Thereby the coupling for the driven drawoff 
roll is again switched on by means of microswitch 92 while the separating 
rollers 19 and 20 and the corner separators are lifted again to the exit 
position of the paper stack 18. At this turning point, the slideblock 67 
reaches the position in which the light slot of the machine housing upper 
part 12 is disposed at the beginning of the original to be copied, that 
means adjacent the stop 137 of the glass plate 68. Now the slideblock 67 
begins its actual pass (travel path), by which the sheet runs through in 
syncronization to the slot movement at the exposure window 6. When the 
slideblock 67 reaches the other turning point, the bracket 47 activates 
the carriage 86 in a manner that the carriage 86 is returned to the FIG. 
13 illustrated ground position. In this ground position the protrusion 156 
switches the microswitch 99 in a manner that the halogen lamp 93 and the 
high voltage rectifier are shut-off. The slideblock 67 then runs back to 
the ground position in which the microswitch 98 is activated by means of 
the chain cam 155, which then shuts off the driving motor. During the 
return run of the slide block 67 to the ground position, the copy is fixed 
in the press rolls 9 and 10 and transported to a copy deposit place. 
Upon the return running of the slideblock 67 to the ground position, the 
start switch 97 is switched backwards one step, which means for one copy 
number, by means of a switch lever 100 which is positioned underneath 
adjacent the glass plate 68 and is so arranged that it runs along the edge 
of the glass plate during the copying process. The switch lever 100 is 
spring loaded and connected by connecting rod 101 with a return position 
lever 102 of the start switch 97. In the event the preset number of copies 
is not reached, which means the start switch 97 is not returned to its 
null or zero position, the microswitch 98 is over run so that after the 
return running to the ground position a new working cycle begins. The 
microswitch 98 finally switches the driving motor off only when the preset 
number of copies has been reached and the start switch 97 has returned to 
its null position. 
The driving of the separating rollers 19 and 20 is controlled by the 
driving of the draw-off roller 35. Draw-off roller 35 is provided on the 
side opposite of the coupling, which is on the servicing side of the 
machine, with a gear wheel 160 rotatably fixed with the driving shaft 25 
and driven by means of a chain (FIGS. 1 through 6). Two swing arms 28 and 
29 are supported at this driving shaft 26, which swing arms support the 
driving shaft 27, which driving shaft 27 carries separating rollers 19 and 
20 rotatably fixed thereto. Both swing arms are connected together by a 
cross traverse member 161. The driving shaft 26 is rotatably fixed with a 
further gear wheel 30 which drives a gear wheel 32 by means of a chain 31, 
arranged on the shaft 27 for the separating rollers 19 and 20. A tension 
spring 162 is provided on the traverse 161 for the chain 31. The levers 17 
of the raising and lowering apparatus grasp the shaft 27 at the end 
extensions thereof beyond the separating rollers 19 and 20. The levers 17 
are moveable by means of the 4-sided shaft 16. Caps 163 of plastic are 
arranged on the ends of the shaft 27 for engagement with the levers 17. 
The copying machine of the invention is very small and compact having a 
surface area which is only some ten centimeters longer and wider than the 
size of the format being copied. The height of the machine is 
approximately fifteen centimeters so that the copy machine altogether is 
only slightly greater than the size of a small briefcase. Through the 
above described novel arrangement of the separate elements is it possible 
to bring about a most compact configuration, while arranging the separate 
elements so that they are easily accessible for inspection and servicing. 
With the arrangement of the present invention, very short distances are 
provided between the separate elements and stations so that, in addition 
to the separating rollers and the pressing rollers, only two roller pairs 
are provided for paper transport. The drive for the photocopying machine 
of the present invention is very simple and is removable without the 
electrical installation. 
Because the copies are still in the region of the charging station 5 and 
the exposure window 6 when they start entering the pressing rolls 9 and 
10, it is preferable that a separate chain drive is provided for the 
pressing rolls 9, 10 and the paper copy transport rolls located in the 
region of the exposure window 6 namely rollers 35, 36, and 51, 52, because 
then the relative movement between the press rolls 9 and 10 and the 
occurring impacts are not carried over to the region of copy transport 
elements adjacent the exposure window 6. Through the relatively great 
distance between the driving motor and the press rollers located at 
opposite ends of the machine, a relatively long drive chain 77 is provided 
so that an occurring impact at the pressing rollers can also be absorbed 
by means of the elasticity of the chain. 
While we have shown and described a single embodiment in accordance with 
the present invention, it is understood that the same is not limited 
thereto but is susceptible to numerous changes and modifications as would 
be known to those skilled in the art of the present disclosure and we 
therefore do not wish to be limited to the details shown and described 
therein but intend to cover all such changes and modifications as are 
encompassed by the scope of the appended claims.