JPS61208043A - Shifting device in copying machine - Google Patents

Abstract

PURPOSE:To execute satisfactorily the simultaneous separation and the shift of an original and a photosensitive paper with the aid of the elasticity of paper by disposing a retaining roller at a position right before a pair of shifting rollers. CONSTITUTION:A shifting device provided at the down stream of a printing device is constituted with a fast forwarding roller 21 provided with plural rollers 21a and the same speed roller 22 with a similar constitution. The retaining roller 23 rotating in the same direction at the same speed as the fast forwarding roller 21 is installed at the position right before the rollers 21 and 22 with an interval S'. With the installation of the roller 23 the photosensitive paper 3 and the original 2 are deformed at sides of the roller 21 and roller 22, respectively, and separated as if they were pressed by their own holding elasticity. Accordingly the simultaneous shift and separation between the original 2 and the photosensitive paper 3 can be executed satisfactorily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention provides a method for automatically separating photosensitive paper fed from a printing device in a copying machine and overlapping paper of an original, so that the leading edge of the photosensitive paper is relatively This invention relates to a device for shifting polymeric paper in advance.

(Description of Prior Art) In such a copying machine, a pair of fast-feeding cores A and constant-velocity rollers having different circumferential speeds are provided at predetermined intervals in order to separate the leading edge of the original and the photosensitive paper by relatively shifting them. A common method is to use shift rollers and supply the polymerized paper between the rollers (for example, Japanese Patent Publications No. 55-27869, No. 43-16872, etc.). The known shifting device is the ninth
~ As shown in Fig. 10, the original 52 and the photosensitive paper 53 are held between the fast-forward rollers arranged in a zigzag pattern and slightly indented and the constant-velocity rollers 51, and the photosensitive paper side is fast-forwarded to expose the photosensitive paper. The leading edge of the paper is placed in front of the original.

The leading edge of the photosensitive paper 53 is pinched and abutted against the waiting separating claw 54, which is pushed and reversed, and sent to the developing section, and the original 52 is left as it is without being reversed. Although the document is ejected to the document outlet, this conventional device has the following drawbacks.

First, since the vibration force is imparted by the biting of the rubber rollers arranged in a staggered manner, it is necessary to obtain a uniform frictional force over the entire length of the shaft, and for this purpose the distance between the shifting rollers must be set. This is extremely difficult and requires a high level of precision as the allowable range of the biting dimension between the rollers is narrow. In other words, if the paper is deeply bitten, longitudinal waves will be generated in the photosensitive paper, making it difficult to reverse the paper and producing a crunching sound as the paper advances.Additionally, abnormal frictional force against the rollers will act, causing wear on the surface of the rubber rollers. This will accelerate damage, and if the biting is shallow, slipping will occur and the shifting action will deteriorate. Furthermore, it is manufactured because high B accuracy is required. Assembling takes time and costs are high.

(Purpose of invention) Non-invention deals with such conventional problems,
The first objective is to provide a shifting device for a copying machine that can improve the shifting effect by increasing the contact pressure, that is, the frictional force, on the smoothing roller by utilizing the elasticity of the photosensitive paper and original. The second purpose is to eliminate the biting of the fast-feeding rollers and constant-velocity rollers, to make it easier to set the distance between the shifting rollers, and to prevent longitudinal waves from forming on the photosensitive paper to speed up the reversal and separation. To provide a shifting device for a copying machine that can perform a silent and smooth shifting operation without the sound of paper bending.Another object of the present invention is to provide a shift device for a copying machine that can perform a quiet and smooth shifting operation without making any noise when bending paper. Therefore, it is an object of the present invention to provide a shifting device for this type of copying machine that is easy to manufacture and assemble and is advantageous in terms of cost.

(Structure of the Invention) In order to achieve the above object, the present invention supplies overlapping paper of photosensitive paper and original between a pair of smoothing rollers that rotate in opposite directions and have different circumferential speeds. This is a device that feeds photosensitive paper faster than the original due to a speed difference.
A pair of shifting rollers are provided at a predetermined interval of at least 0 or more, and the polymeric paper fed between the shifting rollers causes the photosensitive paper to move toward one fast-feeding roller of the shifting lobe, and the original to the other side. A presser roller is provided at the front position between the two shifting rollers so that it deforms toward the constant velocity side and is pressed by its own elasticity.

The pusher and inserter rotates at the same speed and in the same direction as one of the fast-feed rollers of the shift roller, and is spaced at a required interval from the other constant-velocity roller of the shift roller to form an inlet for the polymerized paper. 1 (Embodiment) In FIG. 1, a printing device 10 is made of transparent glass and has a light source 12 built into a cylindrical body 11. ) Original 2 and photosensitive paper 3 in 13
If it is supplied in a t-polymerized state, baking is performed while it is conveyed in close contact with the cylindrical body. 14 is a driving and guiding roller for the belt 13.

The separation/smoothing rack 1!20 has rotating shafts 21b, 22 that support a plurality of rollers 21a and 221L in parallel.
a pair of shifting rollers 21 and 22 that rotate in opposite directions at a circumferential speed of 'fr-A and are provided at a predetermined interval in b;
A presser roller, a separation claw that separates the fast-forwarded photosensitive paper by holding its tip 4 and reversing it, and a separating roller 21 and 22 that guide the document and the original paper so as to form a detour. The guide board for people is 4th grade and h.
Ru.

The pair of smoothing rollers 21. '12 is each Koro 2
1a e 22 a may be arranged in a staggered manner, or @2~3
As shown in the figure, the rollers may be provided facing each other, but the rollers should be separated from each other by a distance S between the rollers. One of the shifting rollers 21 is a fast-feeding roller, and the other 22 is a constant-velocity roller.

The rollers 21a, 22a, and 23a are made of rubber with high frictional force.

Embodiment 1 A presser roller is provided at a position immediately in front of both the shifting rollers 21 and 22. This presser roller 23 has rollers 231L provided at predetermined intervals on a rotating shaft 23b, similar to the inscription shifting roller, and rotates at the same speed and in the same direction as the fast-feeding roller 21, and rotates at the same speed as the other constant-velocity roller 231 of the shifting roller. is the required interval to form the introduction port 26 of the polymeric paper 2.3! J:
It will be set up for 4 days.

Although the distances S and S depend on the quality of the paper such as photosensitive paper, they are usually set at l.
It is appropriate to set it in about mm. This deflection roller 23 deforms the overlapping paper 2.3 fed between the shifting rollers 21 and 22, with the photosensitive paper 3 being deformed toward the fast-feeding roller 21 side, and the document 2 being deformed toward the other constant-velocity roller 22 side, so that the paper 2.3 is deformed into its own possession. It is like being pressed with elasticity and regulating it.

Practical Example 2 As shown in Figure vJ4, a guide plate is used instead of the presser roller of the first practical example. A fixed suppression member 33 consisting of a guide/<- etc. is used. Its installation, 1! The roller is located immediately in front of the pair of shifting rollers 21 and 22 and is spaced apart from the lower constant velocity roller.

Embodiment 3 As shown in FIG. 5, the presser foot row = 723 and the suppressing member foot are combined to perform a fast-forwarding roller. It is provided at a position just in front of a pair of shifting rows 921.22 consisting of constant velocity rollers.

Modified Example As shown in FIG. 6, two presser rollers 23 are used and are arranged to rotate at the same speed and in the same direction.

Further, as shown in FIGS. 7 and 8, a flanged presser roller d and a flanged fast-feeding roller 21 can be used.

(Operations and Effects) After printing, the photosensitive paper 3 is overlapped with the original 2, and while being guided by the guide receiving plate, it advances along the detour and reaches the presser roller n.
The tips of both papers simultaneously contact the constant velocity roller n from the bottom side.

There is a gap S' between the constant velocity roller n and the presser roller n, so 4
Fast-forwarding roller 21 is reached after the interval S from the population base. When the polymeric paper 2.3 reaches the rapid feed roller 21, both rollers 21, 2
Since there is a gap 14S between the two, the overlapping paper is pushed toward the constant velocity roller n by the rotation of the fast feed roller 21, and is deformed along the outer periphery of the constant velocity roller n. At this time, the photosensitive paper 3 and the original 2 resist the deformation described above, so the photosensitive paper 3
1, the original 2 becomes a volatile port due to its own elasticity toward the uniform velocity roller n side.

With the achievement of this suppression, the photosensitive paper is moved by fast-forwarding roller 21.
Further, since the originals are individually controlled by the uniform speed rollers n, they are applied relatively smoothly to the photosensitive paper, and the photosensitive paper takes the lead. As the photosensitive paper 3 advances, the leading edge of the photosensitive paper gets caught in the separating claw 24, and as it advances, it is pushed and reversed, so the photosensitive paper 3
is sent to a developing device (not shown) via a guide roller a, and since the original 2 is not reversed, it is ejected as it is to an original exit (not shown).

In the invention, as described above, a pair of shifting rollers are provided at a predetermined interval, and the overlapping paper of the photosensitive paper and the original supplied between the two smoothing rollers is moved so that the photosensitive paper moves toward the fast-feeding roller and the original moves toward the fast-feeding roller side. A presser lobe is provided in front of both the shifting rollers so that it deforms toward the constant velocity roller and is pressed by its own elasticity, so the fast feed roller and constant velocity roller are bitten in a staggered manner as in the past. Because there is no longitudinal wave or large amount of refraction on photosensitive paper, it can be instantly reversed and separated at the same time as shifting, the distance between shifting rowers is easy to set, the tolerance range is wide, and the manufacturing process is easy. It has many advantages, such as being simple, inexpensive, and easy to implement.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of the main parts of a copying machine embodying the present invention, FIG. 2 is a partial front view of a shifting device according to the present invention, and FIG.
The figure is an enlarged longitudinal cross-sectional side view taken along line A-A in Figure 2, and Figure 4 is of the shifting device! Embodiment 2, FIG. 5 shows the third embodiment, FIGS. 6 and 7 are longitudinal sectional side views showing other modifications of the sliding device, and FIG. 8 is a front view of the sliding roller. 9th
The figure is a vertical side view of a conventional example, and FIG. 10 is a front view of the same. 2...Original 3...Photosensitive paper 10...Printing is performed by device 2o...Separation and shifting device 21...Shifting roller (fast feed co [ff) Koro) edict. Edict. Prisoner... Presser rope... Separation claw δ... Guide plate... Pressing member

Claims (4)

[Claims] (1) A device in which a stack of photosensitive paper and an original is fed between a pair of shifting rollers that rotate in opposite directions and have different circumferential speeds, and the photosensitive paper is sent out faster than the original due to the speed difference between the two rollers. The pair of shifting rollers are provided at a predetermined interval of at least 0, and the photosensitive paper is fed between the shifting rollers and the original is moved toward one of the fast-feeding rollers of the shifting rollers. A shifting device for a copying machine, characterized in that a presser roller is provided at a position immediately before both shifting rollers so that it deforms toward the other constant velocity roller and is pressed by its own elasticity. (2) The presser roller rotates at the same speed and in the same direction as one of the fast-feeding rollers of the shifting roller, and is spaced apart from the other constant-velocity roller of the shifting roller at a required interval to form an inlet for the polymerized paper. 2. A shifting device for a copying machine according to claim 1, wherein said shifting device is provided as a copying machine. (3) A copy according to claim 1, characterized in that a pressing member consisting of a fixed guide plate, guide bar, etc. is provided in place of the pressing roller at a position immediately before between the pair of shifting rollers. A shifting device in a machine. (4) The shifting device for a copying machine according to claim 1, wherein the presser roller and the pressing member are combined and provided at a position immediately before the pair of shifting rollers.