JPS63258323A - Mass sheet feeder - Google Patents

Abstract

PURPOSE:To facilitate adjustment of sheet feed position without causing lateral shift from sheet feeder by providing a slide shaft in parallel with a timing belt with interval between both side guides being fixed. CONSTITUTION:Respective side guides 61, 62 move along respective slide shafts 87 together with timing belts 65, 66 and positions thereof can be adjusted finely. Motion of a mounting table 35 on a liftable/lowerable table 34 is adjusted in perpendicular direction to sheet feed direction (a) through a motion adjusting means 54. Motion of both side guides 61, 62 is adjusted through securing means 63, 64 together with timing belts 65, 66 for securing the securing means 63, 64 with the position of the side guides 61, 62 being matched with the position of a sheet 14 on the mounting table 35 so as to secure the side guides 61, 62 properly onto the slide shaft 87 through securing means 71, 72. Then sheet feed position with respect to essencial sheet feeder, i.e. sheet feed tray, of machine is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION Technique Zenzen I - This invention can be used in printers, plotters, facsimile machines, copying machines, printing machines, etc. that use a large amount of paper. For details, in order to improve the system of such equipment,
The present invention relates to a large-volume paper feeder that is attached as a peripheral device to the main body of these devices separately from the original paper feeder, and is capable of supplying a large amount of paper.

PRIOR ART Conventionally, in this type of large-volume paper feeding device, side guides were provided on the left and right sides of the paper feeding direction, and the paper was guided by these side guides to feed the paper. One side guide (1) is fixed and the other side guide (2) is movable, and the other side guide (3) and (4) are movable with both side guides (3) and (4) as the center reference, as shown in Figure (B). There was something to do.

Incidentally, in this type of large-volume paper feeding device, it is sometimes installed as an option on the main body of the device, and in this case, it is naturally designed so that the paper feeding position matches the original paper feeding device of the main body of the device. However, in both the case of the one-sided reference and the center reference mentioned above, component tolerances and mounting are affected by positional variations and
In practice, the paper feeding positions do not match due to the gap between paper sheets, and lateral deviations often occur.

Therefore, in such a case, the side guide must be removed and its position adjusted before installation, and after paper is loaded, the paper must be removed before doing so, which is a troublesome problem. Ta.

Purpose Therefore, the purpose of the present invention is to solve such problems in a mass paper feeder used as an option in equipment such as the printer described above, and to prevent lateral misalignment from the original paper feeder of the main body of the equipment. The purpose of the present invention is to make it possible to easily adjust the paper feeding position.

Structure Therefore, the large-volume paper feeder according to the present invention has a vertically movable elevating table (34
) and a movement adjusting means (5) provided on the lifting platform (34).
4), and a mounting table (35) whose movement can be adjusted in a direction perpendicular to the paper feeding direction (a) by means of its movement adjustment means (54), and which is arranged on the lifting table (34) and on which the paper (14) is loaded. and the left and right pulleys (
67) or 70) and two timing belts (65) and (66) that are driven together, and two timing belts (65) and (66) that are different from each other and that are fixed to opposite sides of each other. The paper (14) on the mounting table (35) can be moved and adjusted according to the paper size.
), and side guides (61) and (62) that regulate the position in the direction perpendicular to the paper feeding direction (a), and the side guides (61) and (62) are fixed at arbitrary positions respectively, and the side guides (61) and (62) are fixed at arbitrary positions, and It is characterized by having a slide shaft (87) that extends parallel to the timing belts (65) and (66) with a fixed interval between the guides (61) and (62).

Then, the placing table (35) on the lifting table (34) is adjusted to move appropriately in a direction perpendicular to the paper feeding direction (a) using the movement adjusting means (54), and the paper (14) on the placing table (35) is adjusted as appropriate.
) position and fix the timing belts (65) and (66) on both side guides (61) and (62) respectively.
) to adjust the paper feed position with respect to the paper feed tray (13), which is the original paper feed device of the device body (12), by adjusting the movement and fixing them appropriately on the slide shafts (87), respectively. It is.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 7 shows a laser printer system equipped with a large quantity paper feeder according to the present invention, and reference numeral (10) in the figure indicates the large quantity paper feeder, which is attached to the right side of the system table (11) in the figure. The device body (12) is placed on the system table (11). The device main body (12) can be supplied with paper (14) from within the paper feed tray (13) which is the original paper feed device, and in addition to that, the mass paper feed device (10) which is an option is also provided. ) can also supply a large amount of paper (14).

As shown in FIG.
9), optical writing section (20), developing section (21), transfer section (
22), separation section (23), transport section (24), fixing section (2
5) etc. As the photoreceptor drum (18) rotates, its surface is uniformly charged by the charging unit (19), and the optical writing unit (20) electronically converts the video signal sent from the outside using laser light. An electrostatic latent image is formed by exposure scanning, and this electrostatic latent image is visualized in a developing section (21) to form a toner image. On the other hand, as mentioned above, the paper feed tray (1
3) Or feed the paper (14) from the bulk paper feeder (10). That is, the paper (14) in the paper feed tray (13)
) is fed out by the paper feeding means (26) and guided by the guide plate (27), or the paper (14) of the mass paper feeding device (10) is fed out by the paper feeding means (28) and guided by the guide plate (29). Then, hit it against the registration roller (30) and stop it.

Then, the registration roller (30) is rotated in accordance with the rotation of the photoreceptor drum (18), and the paper (14) is sent out to the photoreceptor drum (18) at a predetermined timing. Then, the toner image is transferred to the paper (1) in the transfer section (22).
4), the paper (14) is separated from the photoreceptor drum (18) by the separating section (23), and transported by the conveying section (24) and sent to the fixing section (25), where it is fixed. Part (25)
After fixing by applying heat and pressure, the paper is delivered to a paper output tray (31) and stacked thereon. The paper output tray (31) is
It is detachably attached to the left side of the outer case (17) in the figure.

The mass paper feeder (10) is connected to the device body (10) as described above.
2), it supplies a large amount of paper (14) to the machine, and as shown in Fig. 7, there is a lifting platform (34) that moves up and down,
4) A loading table (35) on which a large amount of sheets (14) of equal width are stacked, the above-mentioned paper feeding means (28) that sequentially feeds the sheets from the topmost sheet on the loading table (35), and A paper transport path (36) that guides the paper sent out by the paper feed means (28), and a paper transport path (36) that guides the paper that is sent through the paper transport path (36) and discharges the paper to the device main body (12).
A second paper discharge port (37) is provided.

As shown in FIG. 6, the lifting platform (34) is powered by a drive motor (
40), it moves up and down as shown by the arrow in the figure. That is, when the drive motor (40) is operated, it rotates the worm (41), rotates the worm wheel (42) that meshes with the worm (41), and rotates the drive belt (43) for driving the lifting platform (34). 44). As shown in FIG. 5, there is a rail protrusion (34
a), and near each end there are balls (45
)・(46) are buried. Moreover, along the ground edge opposite to the edge, an elongated sliding surface (34b) is formed parallel to the rail protrusion (34a), and a movement adjustment plate (47) is formed on the sliding surface (34b). put on. The movement adjustment plate (47) has a U-shaped cross section, and fitting pins (48) and (49) are provided near both ends thereof, respectively. Then, a plate material (50) with an inverted-shaped cross section is fixed to the bottom surface of the plate material (50).
hangs downward through a long groove (34c) formed in the sliding surface (34b), and its tip rack (50a) is connected to the pinion (50a).
It meshes with 1). The pinion (51) is the adjustment shaft (52).
) at one end. The adjustment rod (52) is the lifting platform (34)
The other end protrudes toward the other edge, and a knob (53) is attached to the tip. Then, by holding the knob (53) and rotating the adjustment rod (52), the movement adjustment plate (47) is adjusted in its length direction,
As will be described later, a movement adjustment means (54) is formed for fine adjustment in a direction perpendicular to the paper feeding direction. In addition, a lifting platform (34
), the above-mentioned rail protrusion (34a) and sliding surface (3
4b), a long window (34d) is opened to connect them. Then, a size detection sensor (55) is attached to the back side thereof as shown in FIG.

Thus, the above-mentioned receiver places the mounting table (35) on the balls (45) and (46) and the movement adjustment means (54).

As can be seen from FIG. 4, the mounting table (35) has a size detection filler (58) in the center, and two fitting holes (35a) and (35b) spaced apart from each other on the negative side thereof. Open.

Fitting pins (
48) and (49), and position the mounting table (35) on the above-mentioned lifting table (34). Then, sheets of paper (14) are stacked thereon as shown in FIG.

As can be seen from FIG. 1, the paper (14) on such a mounting table (35) is fed by the paper feeding means (28) described above in the paper feeding direction shown by the arrow (a) in the figure. Direction (a
) and the left and right side guides (61) and (
62). Both side guides (61)/(62)
are fixed to the two timing belts (65) and (66) by fixing means (63) and (64) provided at the ends thereof, respectively. The two timing belts (65) and (66) are
As shown in the figure, the pulleys (67) and (68) on the left and right sides (67) and (68) or (6
Pass between 9) and (70). Both side guides (61) and (62) are fixing means (63) and (64), and these two timing belts (65) and (66)
) are attached to opposite sides of each other. In other words, the fixing means (63) of one side guide (61)
is fixed to the - side of the lower timing belt (65), and the fixing means (64) of the other side guide (62) is fixed to the other side of the upper timing belt (66). Therefore, the two timing belts (65) and (66) are driven together, and both side guides (61) and (62) are moved together, depending on the paper size.
The interval between 1) and (62) can be adjusted. Also, separately connect the side guides (61) and (62) to the two timing belts (65) or (66).
The spacing can be finely adjusted by pressing against the side edge of the mounting table (35), which is equal to the width of the paper, and fixing the spacing using fixing means (71) and (72) provided thereon. That is, one of the fixing means (71) is as shown in FIG.
), side guide (6], ), J
- a fixed handle (74) fixed to the fixing screw (73);
The proximal end is arranged in line with the tip of the fixed handle (74), and the base end is attached to the fixed handle (74) using the mounting screw (75). A handle (7G), and a compression spring (79) positioned between the fixed handle (74) and the movable handle (76) by positioning screws (77) and (78) installed at mutually opposing positions, respectively. Consisting of Further, as can be seen from FIG. 3(B), the other fixing means (72) includes a fixing handle (81) that is similarly fixed onto the side guide (62) with a fixing screw (80), and a mounting screw (82). A movable handle (83) that can be attached using a screwdriver and rotated freely around its mounting screw (82), and positioning screws (84) and (8).
5) and a compression spring (86) positioned between the fixed handle (81) and the movable handle (83). The fixing handles (74) of those fixing means (71)
) and the movable handle (76), and the fixed handle (81) and movable handle (83) of the fixing means (72) are provided with a slide shaft (87) passing through them respectively, and the above-mentioned two timing belts (65) and It is parallel to (66). Therefore, the movable handle (76) is moved by the elastic force of the compression springs (79) and (86).
Push open (83) and remove side guides (61) and (62).
is fixed to the slide shaft (87), and the distance between the side guides (61) and (62) is fixed. by the way,
Pinch the fixed handle (74) and the movable handle (76) or the fixed handle (81) and the movable handle (83), and press the compression spring (7).
9) or (85), the fixing means (71) or (72) can be moved on the sliding axis (87) and by releasing the hand at any position on the sliding axis (87) It can be fixed at that position as appropriate. Thus, each side guide (61) or (62) moves along the slide shaft (87) together with the timing belt (65) or (66), and can finely adjust its position individually. .

Then, the mounting table (35) on the lifting table (34) is appropriately moved and adjusted by the movement adjustment means (54) in a direction perpendicular to the paper feeding direction (a). Also, the paper (14) on the mounting table (35)
According to the position, adjust the movement of both side guides (61) and (62) together with the timing belts (65) and (66) that fix them using fixing means (63) and (64), respectively.
The fixing means (71) and (72) respectively lock the slide shaft (8
7) Fix as appropriate on top. It also adjusts the paper feeding position with respect to the paper feeding tray (13) which is the original paper feeding device of the device body (12).

Effects Therefore, according to the present invention, in a mass paper feeder used as an option in equipment such as the above-mentioned printer, the loading table can be adjusted to move in a direction perpendicular to the paper feeding direction using the movement adjusting means on the lifting table. In addition, the side guides can be moved and adjusted independently according to the paper position on the loading table, so the widthwise position of the paper can be finely adjusted while the paper is loaded, and the original feeding position of the device body can be adjusted. The paper feeding position can be easily adjusted so as not to cause lateral misalignment with the paper device.

[Brief explanation of drawings]

The drawings show a mass paper feeder which is an embodiment of the present invention used in a laser printer, FIG. 1 is a perspective view showing the internal mechanism of the mass paper feeder, and FIG. 2 is an enlarged view of the pulley portion thereof. , FIGS. 3A and 3B are plan views of the fixing means, FIG. 4 is a perspective view showing how the mounting table is attached to the lifting table, and FIG. 5 is a longitudinal sectional view of the lifting table. FIG. 6 is a perspective view showing an elevating table and its drive mechanism, and FIG. 7 is a partially cutaway overall schematic configuration diagram showing a laser printer system using the large-volume paper feeder. Figure 8 (A) and (B)
2A and 2B are explanatory diagrams each illustrating a method for adjusting the movement of a side guide of a conventional large-volume paper feeder.

Claims (1)

[Claims] A lifting table that moves up and down, a movement adjusting means provided on the lifting table, and a mounting table arranged on the lifting table and capable of adjusting movement in a direction perpendicular to a paper feeding direction by the movement adjusting means, and on which sheets are loaded. , two timing belts arranged in upper and lower stages and passed between the left and right pulleys in the paper feeding direction and driven together, and different timing belts that are fixed to opposite sides and are adjusted according to each paper size. A side guide whose movement is adjustable and which regulates the position of the paper on the placement table in a direction perpendicular to the paper feeding direction, and each of the side guides is appropriately fixed at an arbitrary position and the interval between the two side guides is fixed. A large-volume paper feeder comprising a slide shaft extending parallel to the timing belt.