JPH0741559U - Clear sheet copy print erasure device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is possible to automatically erase the copy print of the clear sheet and achieve labor saving. In an apparatus for erasing copy printing of a clear sheet 1 used in an overhead projector or the like, a casing 3 having inlets and outlets 4 and 5 for inserting and removing the clear sheet 1, and a casing 3 inserted in the casing 3 And a erasing means 15 for erasing the copy print of the clear sheet 1 fed by the feeding mechanism 11 between the inlet 4 and the outlet 5 of the casing 3. It is characterized by that.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clear sheet copy printing / erasing apparatus used in an overhead projector or the like, and more particularly to a clear sheet copy printing / erasing apparatus that can automatically perform copy printing erasing.

[0002]

[Prior art]

 When copy printing is performed on a clear sheet used for an overhead projector (OHP), the clear sheet can be reused by deleting the copy print.

[0003]

[Problems to be solved by the device]

 In the past, in order to erase copy printing, thinner etc. was applied and then wiped off manually. For this reason, it took a long time to complete the erasing of one sheet, and the quality was insufficient.

The present invention was devised to effectively solve the above problems. An object of the present invention is to provide a copy printing / erasing apparatus for a clear sheet, which can automatically erase copy printing.

[0005]

[Means for Solving the Problems]

 The present invention is an apparatus for erasing copy printing of a clear sheet used in an overhead projector or the like, and a casing having an inlet / outlet for inserting and removing the clear sheet, and an outlet for the clear sheet inserted in the casing. And a erasing means for erasing the copy print of the clear sheet sent by the feeding mechanism between the inlet and the outlet of the casing.

The erasing means is composed of an erasing liquid tank for storing the erasing liquid in front of the wiping roller rotating on the clear sheet and allowing the clear sheet to pass through the erasing liquid. Further, the erasing means may be constituted by an erasing liquid drop tank having a nozzle for dropping the erasing liquid onto the wiping roller rotating on the clear sheet.

Besides, the erasing means may be constituted by a rotary wire brush or an ultrasonic cleaner.

[0008]

[Action]

 The copy-printed clear sheet is inserted from the entrance of the casing and sent to the exit by the feeding mechanism. The copy print is erased by the erasing means while being sent to this exit.

When the erasing means has an erasing liquid tank for storing the erasing liquid in front of the wiping roller, copy printing of the clear sheet is wiped by the wiping roller which passes through the erasing liquid and rotates on the clear sheet. It will be. If the erasing means is a drip tank for dripping the erasing liquid on the wiping roller that rotates on the clear sheet, erasing of copy printing and wiping of the erasing liquid will be performed at the same time. Rotating the rotary wire brush on the clear sheet also scrapes and erases the copy print. Further, copy printing can be erased by ultrasonic waves generated in the cleaning liquid.

[0010]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, in order to erase the copy print of the clear sheet 1, the copy print erasing device 2 has a casing 3, and the clear sheet 1 is inserted into this casing 3. An inlet 4 and an outlet 5 for taking out are opened horizontally opposite to each other. A guide plate 6 that guides the insertion of the clear sheet 1 downward by a predetermined angle is attached to the inlet 3, and a guide plate 7 that extends the horizontal direction of the clear sheet 1 extends to the outlet 5.

A feed mechanism 11 for feeding the clear sheet 1 inserted into the inlet 4 is provided in the casing 1. The feed mechanism 11 sandwiches the clear sheet 1 on the inlet 4 side in opposite directions. It has a pair of upper and lower driven-side feed rollers 12 and a driving-side feed roller 13 that are rotationally driven, and also has a feed roller 14 arranged on the outlet 4 side. These feed rollers 12 to 14 are covered with a rubber material 11a having a large friction coefficient.

An erasing unit 15 for erasing the copy print of the clear sheet 1 is provided in front of the pair of upper and lower feed rollers 12 and 13 in the feeding direction. The erasing unit 15 rotates on the clear sheet 1. An erasing liquid tank 18 for storing an erasing liquid 17 such as thinner is provided in front of 16. One end side of a guide plate 19 inclined to guide the feed of the clear sheet 1 to the outlet 5 side is inserted into the erasing liquid tank 18, and the feed roller 14 is attached to the other end side of the guide plate 19. In addition to being arranged, in front of the feed roller 14 in the feeding direction, in order to remove the copy powder and the erasing liquid 17 floated by the erasing liquid 17, a water-absorbent material such as cloth or a resin porous member (felt, sponge) is removed. An excellent wiping roller 16 is arranged. Therefore, in order to pass the clear sheet 1 into the erasing liquid 17, the feed rollers 12 to 14 are arranged near the height of the opening 18a of the normal erasing liquid tank 18 opened upward. There is.

A drive sprocket 21 connected to the drive shaft of the motor 20 is supported by the casing 3, and as shown in FIG. 2, the drive sprocket 21, the feed roller sprockets 22 and 23, and the wiping roller sprocket. 24, a roller chain 27 is stretched over idle sprockets 25, 26.

Therefore, the rotation of the drive sprocket 21 causes the feed rollers 12 to 14 and the wiping roller 16 to rotate in synchronization with each other, and the copy-printed sheet surface faces upward to the entrance 4 along the guide plate 6. If inserted, the clear sheet 1 will be drawn into the erasing liquid tank 18 by the rotation of the pair of upper and lower feed rollers 12, 13. The drawn clear sheet 1 is immersed in the erasing liquid 1 and curved downward to pass through the erasing liquid tank 18, but the copy powder sprayed on the clear sheet 1 during the passage is erased. It is raised or removed by the liquid 17. The tip of the clear sheet 1 is guided along an upwardly inclined guide plate 19 and is further fed to the wiping roller 16 side by the rotation of the feed roller 14. When the copy powder and the erasing liquid 17 adhering to the clear sheet 1 that have emerged when passing under the wiping roller 16 are wiped off, both the copy printing and erasing liquid 17 are put on the guide plate 7 at the outlet 5. The removed clean clear sheet 1 is sent out.

As described above, since the feeding mechanism 11, the erasing liquid tank 18 and the wiping roller 16 are arranged in series between the inlet 4 and the outlet 5, it is possible to automatically erase the copy printing and save the cost. Labor can be achieved, and a clean clear sheet 1 can be obtained.

In FIG. 3, the feed roller 32 is disposed on the guide plate 31 that horizontally connects the inlet 4 and the outlet 5 to the inlet 4 side, and the wiping roller 16 that rotates on the clear sheet and the upper portion of the wiping roller 16 are provided. The erasing liquid lower tank 33 for storing the erasing liquid 17 in the casing 3 is installed as the erasing means 15. At the lower end of the erasing liquid drop tank 33, a nozzle 34 is formed to drop the erasing liquid 17 onto the wiping roller 16 arranged immediately below. Therefore, the erasing liquid 17 is erased simultaneously with the erasing liquid 17, and the erasing liquid 17 is wiped by the wiping roller 16, so that the erasing of the copying print and the erasing liquid wiping process can be speeded up and the apparatus 2 can be simplified.

In FIG. 4, in order to guide the feeding of the clear sheet 1, the inlet 4 and the outlet 5 are connected to the outlet 5 side by a guide plate 31 having a downward slope, and the feed roller 32 is arranged on the inlet 4 side of the guide plate 31. The feed mechanism 11 is formed, and the rotary wire brush 35 constituting the erasing means 15 is arranged on the guide plate 31. The feed roller 32 is rotated to be fed along the guide plate 31. The copy print of the clear sheet 1 is scraped off with a rotary wire brush 35.

In FIG. 5, a belt conveyer 36 serving as a feed mechanism 11 is horizontally arranged between an inlet 4 having a guide plate 6 and an outlet 5 having a guide plate 7. The rotary wire brush 35 is arranged on the conveyor 36.

In FIG. 6, a cleaning liquid tank 37 for storing the cleaning liquid solution 36 a is arranged as an erasing means 15 between the inlet 4 and the outlet 5, and an oscillator 38 of the ultrasonic cleaner is provided at the bottom of the liquid tank 37. It is a thing. By the rotation of the pair of upper and lower feed rollers 12 and 13, the clear sheet 1 is fed into the cleaning liquid tank 37 with the copy-printed sheet surface facing downward. In the liquid tank 37, copy printing is erased due to ultrasonic pressure or breakage of bubbles repeatedly generated in the liquid.

If a sensor (not shown) for detecting that the clear sheet 1 is inserted is installed at the inlet 4 of the casing 3 in the embodiment shown in FIGS. The clear sheet 1 can be sent to the exit 5 only by inserting the sheet 1.

Further, the feeding speed of the clear sheet 1 may be varied according to the density of copy printing. In this case, the density of copy printing is detected, and the feed speed of the clear sheet 1 is adjusted according to the detected density. For example, as shown in FIG. 1, a sensor 39 that projects light onto the clear sheet 1 inserted in the entrance 4 and detects the copy density by the reflected light is installed, and a signal from the sensor 39 causes the feed mechanism 11 to operate. A controller 41 that variably controls the feed speed of the clear sheet 1 is installed. The controller 41 sets the feed speed of the clear sheet 1 to be slow when the sensor 39 detects that the copy density is high, and sets the feed speed of the clear sheet 1 to be high when the copy density is detected to be low. Set to.

Therefore, when the copy density is high, if the feed speed of the clear sheet 1 by the feed rollers 12 to 13 and 32 in FIG. 1 and FIG. The roller 16 also takes a long time to wipe it off. In FIGS. 4 and 5, if the feed speed by the feed roller 32 and the belt conveyor 36 becomes slow, the time taken to scrape it off by the wire brush 35 becomes long. Prolonged exposure to sound waves ensures reliable erasure of copy prints.

[0024]

[Effect of device]

 In short, according to the present invention, by the feeding mechanism and the erasing means for erasing the copy printing of the clear sheet fed by the feeding mechanism, the erasing of the copy printing can be automatically performed and the labor saving can be achieved.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an erasing device of the present invention.

FIG. 2 is a plan sectional view showing an erasing device of the present invention.

FIG. 3 is a cross-sectional view showing another embodiment of the present invention.

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the present invention.

FIG. 6 is a sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 clear sheet 3 casing 4 inlet 5 outlet 11 feeding mechanism 15 erasing means 16 wiping roller 17 erasing liquid 18 erasing liquid tank 33 erasing liquid drop tank 34 nozzle 35 rotary wire brush 36a cleaning liquid 37 cleaning liquid tank 38 ultrasonic wave oscillator

Claims (5)

[Scope of utility model registration request] 1. An apparatus for erasing copy printing of a clear sheet used in an overhead projector or the like, and a casing having an inlet / outlet for inserting and removing the clear sheet, and an outlet for the clear sheet inserted in the casing. A clear sheet copy print erasing apparatus comprising: a feed mechanism for feeding in a direction; and an erasing means for erasing the copy print of the clear sheet delivered by the feed mechanism between the inlet and the outlet of the casing. 2. The erasing means has an erasing liquid tank for storing the erasing liquid in front of the wiping roller rotating on the clear sheet and allowing the clear sheet to pass through the erasing liquid. 1. A clear sheet copy print erasing device according to 1. 3. The erasing means is constituted by an erasing liquid drop tank having a nozzle for storing the erasing liquid above a wiping roller rotating on the clear sheet and for dropping the erasing liquid on the wiping roller. 2. A copy sheet erasing apparatus for clear sheet according to claim 1, wherein 4. The clear sheet copy print erasing apparatus according to claim 1, wherein the erasing means is constituted by a rotary wire brush that rotates on the clear sheet and scrapes the copy print. 5. The ultrasonic cleaning device, wherein the erasing means has a cleaning liquid tank for passing the clear sheet sent by the feeding mechanism into the cleaning liquid, and an ultrasonic cleaner for emitting ultrasonic waves toward the clear sheet at the bottom of the cleaning liquid tank. The copy print erasing apparatus for a clear sheet according to claim 1, further comprising: