Receiving tray for material in sheet form, more particularly material coming from a copying machine

Abstract: A receiving tray (8) for material in sheet form coming from a copying machine (1), said tray comprising a support (12) which is rotatable about a pivot axis (9) and which can be set to two positions by hand, a first position (Fig. 1) for receiving loose sheets on a first support surface (26) of the support (12) and a second position (Fig. 2) for receiving computer forms on a second support surface (30) of the support (12) situated opposite the first support surface (26). The support is provided with a sheet stop (31,12b) and a guide element (33) pivotally connected to the sheet stop (31,12b). In the first position (Fig. 1) the support (12) directly adjoins a sheet exit of the copying machine (1) and the guide element (33) is disposed beneath the support (12). In the second position (Fig. 2) the guide element (33) forms a sheet guide between the sheet exit of the copying machine (1) and the receiving tray (8) for the deposition of a computer form in the receiving tray (8) which in this position has a greater storage capacity than in the first position.

Description: The invention relates to a receiving tray for material in sheet form, more particularly material coming from a copying machine, comprising a support which is rotatable about a pivot axis and which has two oppositely situated support surfaces parallel to the pivot axis, the said support being capable of occupying two positions, a first position in which one of the support surfaces can receive material in sheet form, and a second position in which the other support surface can receive material in sheet form. A receiving tray of this kind is known from US Patent 4 191 467, which describes a copying machine provided with a receiving tray which in one of the positions can receive in zig-zag folded form only long originals having fold lines, hereinafter referred to as computer forms, while in the other position it can receive only loose copy sheets. In this known copying machine, in the first position the receiving tray clears the exit where copy sheets are discharged from the copying machine to guide long copy sheets having fold lines into a receiving tray for zig-zag folded copy sheets, such tray being situated beneath the rotatable receiving tray; in the other position the rotatable receiving tray can receive copy sheets but cannot receive originals. The object of this invention is to provide a receiving tray for use in a copying machine, which tray in the first position can receive a small stack of loose originals and, in the second position, a large stack of zig-zag folded originals. This object is achieved in that in a receiving tray according to the invention, the shortest distances between each of the support surfaces and the pivot axis are different. Consequently, the effective support surface of the receiving tray in the first position is at a higher level than in the second position, so that in the first position loose originals can be satisfactorily deposited while in the second position a long original having fold lines can be deposited in zig-zag folded form. In one embodiment of the receiving tray according to the invention, the shortest distance between the pivot axis and one edge of a support surface is less than the shortest distance between the pivot axis and the opposite edge of the same support surface. Consequently, in the first position the support surface operative in that position can directly adjoin the exit place where originals are discharged from the copying machine so that loose originals can be fed directly from the exit place to the operative support surface, while in the second position the support surface operative in that position is situated at a distance from the exit place so that a long original having fold lines and discharged from the copying machine at the same exit place can be folded zig-zag along the fold lines in the area between the exit place and the support surface operative in the second position. In a further embodiment of the receiving tray according to the invention, the support at the support surface edge closest to the pivot axis is provided with a sheet stop. Consequently, in the second position of the support the sheet stop can extend in an area occupied by the support when the latter is in the first position, so that the capacity of the receiving tray can be large in the second position in comparison with the capacity of the receiving tray in the first position. In yet a further embodiment of a receiving tray according to the invention, a bent guide element is provided and is connected by a hinge to the end of the sheet stop situated opposite the edge of the sheet stop connected to the support, which guide element can rotate about the hinge from a first position in which the guide element is situated in the space defined by the sheet stop and the adjoining support surface, to a second position in which the guide element is flush with the sheet stop. Consequently, the receiving tray is compact in the first position, while in the second position it forms a good guide for zig-zag folding of an original having fold lines. By providing the guide element with a plate having a profiled edge which can rest on a rod and which ensures that, on rotation of the support from the first position to the second position, the guide element moves substantially parallel to itself from the first position in which it is situated beneath the support surfaces to the second position, the receiving tray can be moved from the first position to the second position and vice versa by simple manual movement. The invention will be explained with reference to the accompanying drawings wherein: Fig. 1 is a section of part of a copying machine provided with a receiving tray according to the invention in a position for receiving loose originals, and Fig. 2 is the same section as in Fig. 1 but with the copying machine in a position for processing computer form originals. The copying machine 1 represented in the drawings has at the top an exposure window 2 on which an original for copying can be placed. The exposure window 2 is covered by a hinge-up cover 3. A conveyor belt 6 trained about rollers 4 and 5 is contained in the cover 3. Conveyor belt 6 rests on the exposure window 2 for conveying an original from feed point 7 to an exposure position on the exposure window 2 and for, after exposure, conveying said original from the exposure position to a receiving tray 8 situated opposite feed point 7. The receiving tray 8 is fixed rotatably about pivot 9 between two frame plates 10 which project from the copying part of the copying machine 1. The receiving tray 8 comprises an L-shaped body 12 with a long leg 12a and a short leg 12b, the long leg 12a forming the carrier for originals to be collected and the short leg 12b forming a sheet stop. Brackets 14 are disposed in the angle between the legs 12a and 12b and to them are secured pins 15 whose axes coincide with the pivot axis 9. The pins 15 fit rotatably in holes 11 formed in the frame plates 10 near the edge remote from the copying part. A projection 16 is secured to each pin 15 and can co-operate with a lug 17 on a frame plate to limit the rotation of the receiving tray 8 in one direction. An abutment 20 is disposed on the copying machine and consists of a part 21 extending slantingly downwards from the exposure window 2 for some distance, followed by a part 22 which extends straight down, and a part 23 which extends horizontally from part 22 to the side wall 24 of the copying part of the copying machine. In the position of the receiving tray 8 represented in Fig. 1, the carrier 12a is situated above the pivot 9 and the receiving tray rests by an end 25 of the carrier 12a on part 23 of abutment 20. That side of the L-shaped body 12 which faces the pivot 9 is formed by a support surface 30 on the long leg 12a and an abutment surface 31 on the short leg 12b, the said abutment surface 31 forming an angle of 90° with support surface 30. A support surface 26 is situated opposite support surface 30 on the long leg 12a. A bent guide element 33 is connected at one end by a hinge 34 to the end of the short leg 12b. In the position of the receiving tray represented in Fig. 1, guide element 33 rests on a rod 35 secured between the frame plates 10. Guide element 33 has a profiled plate 36 at the underside, which plate on rotation of the receiving tray from the position represented in Fig. 1 co-operates with rod 35 as will be explained hereinafter. In the space which is present between guide element 33 and the L-shaped body 12 in the position represented in Fig. 1, there is disposed an auxiliary member 38 which is used when processing computer forms. To this end, auxiliary member 38 is provided with a pin 39 which fits in a hole 40 in guide element 33 for detachably securing the auxiliary member 38 on guide element 33. Starting from the position of the copying machine represented in Fig. 1, the copying machine is arranged as follows for processing computer forms: by pressing on the receiving tray at place indicated by arrow 41 body 12 rotates about pivot 9. In these conditions hinge 34 describes a circular path indicated by reference 42. In the first part of this movement the profiled plate 36 slides over rod 35, the end 43 of guide element 33 describing a path denoted by line 44 and the end 43 coming to rest on abutment part 21. In the second part of the movement of the hinge 34 in the circular path 42, the profiled plate 36 is free of rod 35 and guide element 33 rotates about the end 43 resting on abutment part 21. In the end position represented in Fig. 2, in which abutment surface 31 and the adjoining surface 45 of guide element 33 are in the same plane, projection 16 strikes against the lug 17. Since the centre of gravity of the rotatable part of the receiving tray in the position represented in Fig. 2 lies on that side of pivot 9 which is remote from guide element 33 this end position is a stable state. Auxiliary member 38 can now be removed from guide element 33 and placed on cover 3, by means of lug 39 and an aperture 48 provided for the same in the cover 3, to form an inlet guide for computer forms. In the condition of the copying machine 1 now obtained, the computer form folded zig-zag can be placed on the cover 3, whereupon the front edge of the computer form is placed over the inlet guide 38 and pushed between exposure window 2 and conveyor belt 6. When the copying machine is then put into operation, conveyor belt 6 feeds the computer form from the stock over the exposure window 2. The computer form then moves over guide element 33 into receiving tray 8, the leading edge of the computer form arriving at the angle between the support surface 30 and the abutment surface 31 and the computer form then being placed in the receiving tray in zig-zag folded form. It has been found that for good deposition of computer forms of conventional type, e.g. 60 g paper and a size of 380 x 279.5 mm, the front edge and the following even folding edges must be able to move freely downwards over a distance of 65 mm minimum along the side abutment formed by surfaces 31 and 45. To receive a stack of computer forms comprising 1000 sheets with a height of about 100 mm including the distance that the fold lines may creep up along the abutment, the receiving tray should have a depth of 165 mm. By ensuring that the hinge point 34 is approximately half way along the tray depth, in the position represented in Fig. 2, good deposition is obtained with a small overall height for the receiving tray. Once the set of computer forms has been removed from the receiving tray, the latter can readily be reset to the original position, by first placing the inlet guide 38 on the sheet guide 33 and then pressing on the receiving tray at the place denoted by arrow 49 until the position represented in Fig. 1 again is obtained.

Claims: A receiving tray for material in sheet form, more particularly material coming from a copying machine, comprising a support (12) which is rotatable about a pivot axis (9) and which has two oppositely situated support surfaces parallel to the pivot axis (9), the said support being capable of occupying two positions, a first position in which one of the support surfaces can receive material in sheet form, and a second position in which the other support surface can receive material in sheet form, characterised in that the shortest distances between each of the support surfaces (26,30) and the pivot axis (9) are different. A receiving tray according to claim 1, characterised in that the shortest distance between the pivot axis (9) and one edge of a support surface is less than the shortest distance between the pivot axis and the opposite edge of the same support surface (30). A receiving tray according to claim 2, characterised in that the support (12) at the support surface edge closest to the pivot axis (9) is provided with a sheet stop (12b,31). A receiving tray according to claim 3, characterised in that a bent guide element (33) is provided and is connected by a hinge (34) to the end of the sheet stop (12b,31) situated opposite the edge of the sheet stop (12b,31) connected to the support (12), which guide element (33) can rotate about the hinge (34) from a first position in which the guide element (33) is situated in the space defined by the sheet stop (31) and the adjoining support surface (30), to a second position in which the guide element (33) is flush with the sheet stop (12b,31). A receiving tray according to claim 4, characterised in that the guide element (33) is provided with a plate having a profiled edge (36) which can bear on a rod (35) and which ensures that on rotation of the support (12) from its first position to its second position the guide element (33) is moved substantially parallel to itself from its first position in which it is situated beneath the support surfaces (26,30) into its second position.

Inventors: TOSSERAMS WILLEM ANNE, TOSSERAMS, WILLEM ANNE
Applicants: OCE NEDERLAND BV, OCE-NEDERLAND B.V.
Application year: 1989
Main classification: G03G15
IPC codes: G03G15, B65H31, B65H45