JP2590373Y2 - Plate discharging device - Google Patents

Description

[Detailed description of the invention]

[0001]

INDUSTRIAL APPLICABILITY The present invention is applicable to a plate discharging device having a plate discharging auxiliary member for surely discharging a developed and fixed plate in a wet plate making machine and the like, and also to a sheet discharging device such as a copying machine and a processor. It relates to a plate discharging device.

[0002]

2. Description of the Related Art A wet plate making machine is constructed so that an exposed plate is developed, fixed in a fixing section, and stacked on a discharge table by a discharge device. The discharge device is provided with a plate discharge auxiliary member for pushing the rear end of the plate to ensure discharge. FIG. 4 is a perspective view showing an example of a conventional discharge device. A discharge device including a pair of plate discharge rollers 7 and 8 is provided near an end of the plate discharge table 11. A plate discharging auxiliary member 17 is laid on the shaft of the plate discharging roller 8. Plate removal auxiliary member 1
Reference numeral 7 denotes a projection claw 17a having a size larger than the outer diameter of the plate discharging roller 8.
And one to two metal rings, and the shape of the projection claw 17a is cut at a right angle to the tangential direction of the outer periphery of the plate discharging roller to push the rear end of the plate 16 as shown in FIG. ing. For this purpose, the rear end of the plate is pushed out and the rear end of the plate is dropped downward.

[0003]

[Problems to be Solved by the Invention] Conventional Plate Discharge Auxiliary Member 1
Reference numeral 7 is made of metal, and the shape of the projection is perpendicular to the tangential direction of the outer periphery of the plate discharging roller, so that the plate can be discharged reliably in terms of performance. Because the larger part rubs the back of the plate,
Scratches due to the metal edge were observed on the back surface of the plate. Further, when the rear end of the plate was pushed out, the plate was pushed obliquely downward due to the rotation of the plate discharging member, and the occurrence of a pressing scratch was observed.
Furthermore, depending on the type of plate material (such as a plate having a laminated structure having high strength), indentations due to the metal edge are observed not only on the back surface of the plate but also on the surface of the plate, which is a problem for a printing plate material. Had become. SUMMARY OF THE INVENTION An object of the present invention is to provide a plate discharging device which enables smooth plate discharging without damaging the discharged plate with indentations or the like.

[0004]

Means for Solving the Problems The present inventor has devised a plate discharging device using a flocking brush as a method for preventing the occurrence of indentation of the plate material while keeping the above-mentioned functional members as they are. That is, it has been found that by appropriately devising the stiffness, length, and distribution of the bristle of the brush, it is possible to reliably assist the plate discharging without leaving any indentation.

Therefore, a plate discharging device according to the present invention comprises a pair of plate discharging rollers provided downstream of a fixing section for drying and fixing a plate,
Exhaust that Yusuke and stencil discharge base stacking the plate to be discharged by the pair of stencil discharge rollers rotating, and a plate discharge auxiliary member for pushing the rear end of the plate fixed to the shaft of the lower roller of the pair of stencil discharge rollers In the plate apparatus, the plate discharging auxiliary member may be a column.
The shape, respectively provided a bunch of hairy fine lines in several places of the outer peripheral surface, and the tip of the bundle of the thin line, is projected to be slightly larger than the outside diameter of the lower roller, the plate is passed In the middle, the bundle of fine wires is pressed and deflected on the back surface of the plate, and after the rear end of the plate passes, the pressed bundle of fine wires rises, and the rear end of the plate on the side of the rising bundle of fine wires. , And further downward.

[0006]

According to the above construction, when the printing plate passes, it is held down by the back surface of the printing plate, and after passing through the rear end of the printing plate, the flocking rises to push the rear end of the printing plate to ensure discharge of the printing plate. As a result, no indentation was left, and smooth plate discharging was enabled. Further, it is possible to prevent the occurrence of extrusion scratches at the rear end of the plate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the drawings. FIG. 1 is a side view schematically showing a plate making machine using a plate discharging device according to the present invention. A plate fed from a plate feeding unit (not shown) and having a latent image formed by an exposure unit (not shown) forms a visible image in the developing unit 1. Aperture roller 2
After the excess toner is squeezed out by the fixing unit 6, the toner is dried by the fixing fan 9 and the heater plates 4 and 5 of the fixing unit 6 and discharged to the plate discharge table 11 by the feed roller 10. The plate that has passed through the heater plate 5 is guided between the plate discharge rollers 11 and 11 to the plate discharge table 11.

After passing through the trailing edge of the plate, the plate discharge rollers 7 and 8 stop feeding, and if the plate cannot move smoothly on the plate discharge table 11 due to friction or static electricity, the plate is slackened and the plate discharge rollers 7 and 8 are moved. At the discharge side, the rear end of the plate stops as shown in FIG. 6, which may cause a jam. For this reason, conventionally, as shown in FIG. 4, the metal plate was discharged onto the plate discharge table 11 by the plate discharge auxiliary member 17, but in this method, the back of the plate surface or the like may be damaged. Therefore,
In the present invention, a plate discharging auxiliary member made of a flocking brush as shown in FIG. 2 is provided.

FIG. 2 is a perspective view showing an embodiment of the plate discharging device according to the present invention. The plate discharge assisting member 12 has a cylindrical portion 12b.
A bundle of flocks 12a is planted at several places on the outer peripheral surface of the bristles. The tip of the flocking bundle 12a projects so as to be slightly larger than the outer diameter of the plate discharging roller 8. In this embodiment, 50 to 70 horse hairs of 0.15 to 0.2 mm are bundled to form one projection, and five hairs are implanted on the circumference. It has been found that 5 to 8 projections are most effective on plate discharging. Also, the tip of the flocking is 1 to 1
By protruding about 2 mm, it was found that the same plate discharging property as that of the conventional metal edge can be secured. Although horse hair is used in the present invention, a resin material may be used. It is also possible to achieve the same function by processing and molding a soft material such as rubber or elastomer to make the shape of the protrusion the same. However, in small-scale production, the flocking brush is more advantageous.

FIG. 3 is a view for explaining the operation of the plate discharging auxiliary member of FIG. While the printing plate 16 is passing, it is pinched and discharged by the pair of plate discharging rollers 7, 8, so that the flocking bundle 12a is pressed and deformed on the back surface of the printing plate 16 (a). Edition 1
When 6 is discharged to the rear end portion, the flocking bundle 12a is in a standing state behind the rear end, and the rear end is pushed by the side surface of the flocking bundle 12a (b). When the plate discharge assisting member 12 further rotates, the rear end of the plate is pushed diagonally downward, and the plate rear end is dropped on the plate discharge table 11 (c). Due to such an operation, the brush portion is deformed while the plate 16 is passing, so that no scratches or indentations are made on the back surface of the plate, and after the plate 16 passes, the rear end of the plate is pushed out by the side surface of the brush portion. ,
Further pressing down diagonally does not damage the plate at all.

[0011]

[Effect of the Invention] As described above, according to the present invention, plate discharging assist can be performed in a plate making machine or the like without making scratches or dents on the plate material regardless of the rigidity of the plate material. For this reason, the effectiveness with a plate material having a laminated structure which is expected to increase in the future is great. In addition, although scratches on the back surface do not cause much problem in the current plate material, the use of this plate discharging device can prevent scratches even when the back surface has a photosensitive surface.
For this reason, it can be diverted to materials other than electronic plate making.
Further, the present invention can be used not only for discharging the plate material but also for discharging a sheet material that does not like scratches.

[Brief description of the drawings]

FIG. 1 is a perspective view schematically showing a plate making machine having a plate discharging device according to the present invention.

FIG. 2 is a perspective view showing an embodiment of a plate discharging device according to the present invention.

FIG. 3 is a view for explaining the operation of the plate discharging auxiliary member of FIG. 2;

FIG. 4 is a perspective view showing an example of a conventional plate discharging device.

FIG. 5 is an enlarged view of the plate discharging auxiliary member of FIG. 4;

FIG. 6 is a diagram showing a plate discharging device that does not use a plate discharging auxiliary member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Developing part 2 Aperture roller 3 Guide plate 4,5 Heater plate 6 Fixing part 7,8 Plate discharge roller 9 Fixing fan 10 Feed roller 11 Plate discharge table 12,17 Plate discharge auxiliary member 12a Flocked flocking 12b Column part 13 Electrode plate (upper) 14 Exhaust Heat Fan 15 Spray Nozzle 16 Plate 17a Projection Claw 17b Side View of Projection Claw

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsushi Yano 3-4-2 Marunouchi, Chiyoda-ku, Tokyo Inside Mitsubishi Paper Mills (72) Inventor Rumichi Takanashi 1-35-1 Izumi Honcho, Komae-shi, Tokyo Tokyo Aircraft Instruments Co., Ltd. (56) References JP-A-62-146864 (JP, A) JP-A-62-32061 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B65H5 / 06 G03G 15/00 530

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of plate discharging rollers provided downstream of a fixing unit for drying and fixing a plate, a plate discharging table for stacking plates discharged by the pair of rotating plate discharging rollers, and a lower roller of the pair of plate discharging rollers. in a plate fixed to the shaft of the plate discharge auxiliary member for pushing the rear end of the plate discharge device that having a, the plate discharge auxiliary member has a cylindrical shape, a bundle of hair-like thin lines in several places of the outer peripheral surface And the tip of the bundle of thin wires is projected so as to be slightly larger than the outer diameter of the lower roller, and while the plate is passing, the bundle of fine wires is pressed against the back surface of the plate and bent. After the rear end of the plate has passed, the pressed bundle of fine wires rises, the rear end of the plate is pushed by the side surface of the raised bundle of fine wires, and further pressed down. Plate discharging device.