JPS6369698A - Picture reader - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

<Industrial Application Field> The present invention relates to an image reading device that is capable of reading @information written on a sheet member, and particularly relates to an image reading device that can read and record written self-image information, such as an electronic blackboard device, etc. The present invention relates to an image reading device. <Prior Art> In recent years, so-called electronic blackboard devices have been developed and put into practical use in order to save time and effort in transcribing graphic information written on a blackboard during meetings and the like. This electronic whiteboard device is configured such that a writable sheet member forming a board is movable, image information written on the surface thereof is read by a reading means, and is recorded in a predetermined recording means in a step 7. ing. <Problems to be Solved by the Invention> However, in the above electronic whiteboard device, the size of the sheet member in the moving direction is at least larger than the board surface size, and 1
m to several n1 lengths, and for this reason, when the sheet member moves, skew occurs due to a slight discrepancy in parallelism between the moving direction and the sheet member, and the leading and trailing ends of the sheet member However, there was a problem in that a large deviation occurred in a direction perpendicular to the direction of movement. For this reason, ISi! ! Space is required in the corner direction, which increases the size of the device, or in order to prevent the above-mentioned skewing, the mechanism becomes complicated, and it becomes necessary to align the parts in the vertical direction or when assembling them, which increases the cost of the device. There were some points of inquiry, such as whether it would be uploaded. In addition, in the case where the electronic whiteboard device is constructed so that the sealing member 1 is moved while being wound up on a roll as shown in FIG. Because the front surface of the sheet member 1 is in close contact with the back surface, when the ink written on the front surface Ls of the sheet member 1 comes into contact with the back surface of the sheet member 1, the ink may adhere to the back surface of the sheet member 1, resulting in image loss. There was a problem in that accurate reading was not possible when reading was performed again. Furthermore, when reading the image information using a light-transmitting type smear removal means, there were problems such as ink that was burned on the back side of the sheet member 1 was also read as an image. It solves the problem of gaps and prevents skewing when moving the sheet member without increasing the size or cost of the device, and also prevents images from being missing on the surface of the sheet member and ink from adhering to the back side of the sheet member. The purpose is to prevent the image reading device from collapsing. <Means for solving the problems> An inventive method to solve the above-mentioned conventional problems? J.L.
ll, writing, a currently available sheet member, a winding means for winding up the end of the sheet member, and a bar attached near the end of the sheet member along the winding direction. It is characterized by comprising a strip member having a foreground, a conveying means for conveying the sheet member via a tractor corresponding to the barf ore sheet, and a reading means for reading image information on the sheet member. According to the above means, the sea

[・The parts are accurately conveyed by the tractor and the perforation of the band-shaped member attached to the sheet member, so skewing can be prevented, and
1. When the member is wound up, there is a space between the front and back surfaces of the sheet member equal to the thickness of the strip member attached to the sheet member, 1. Therefore, the ink written on the surface of the sheet member is There is no contact with the back side of the member, and as a result, it is possible to prevent image loss on the surface of the sheet member and ink from adhering to the back side of the sheet member (Example). Specific examples of the invention will be described in detail with figures. A schematic cross-sectional view showing an embodiment of the first invention; FIG. 7 is an explanatory diagram of the baffle closure, 1--shicon and the corresponding toe; and FIG. 3 is a schematic explanation of another example. It is a diagram. 4. Part 1. Forming the board surface of the blackboard
Is it a member made of polyethylene terephthalate, koji, polyester, etc.? ,--~ coat l+-in and pano 11 con and form it, Hue! ■(・Write z1 on pen P etc. and place 7 +j?.-
1-The back side of the sheet/leat member 1! This is the cough/seal member 1. A band-like member 2 having an appropriate width and thickness made of a material 1 of rubber, plastic, synthetic rubber, etc. with good elasticity is pasted near both ends along the IA of 1. The strip member 2 has a perforation 5a as shown in the second blank, and the sheet member 1 to which the strip member 2 is attached is moved by the tractor 3b corresponding to the perforation a. In the first interval, the seat member 1 is driven and rotated by a motor (not shown).
The pair of tractors 3a and 3b allows movement at a constant speed in the direction of the arrow and in the opposite direction. Further, both ends of the sheet member 1 and the strip member 2 are provided with take-up rollers 10a and XO which are driven and rotated by a motor (not shown).
Winding eM4+1. which rotates due to frictional transmission with b. ,
Kino t34 in the future! It has been taken away. During cough winding 2', the winding and winding rollers 10a and 10b rotate at a faster peripheral speed than the tractors 3a and 3b, and the winding ←4a, 41
), due to frictional transmission including slippage,
Sea 1 Member 1 and band member 2 are rolled up tj! 4a
, 4b are set so that the slack is taken up accurately and reliably. Also, see!・
The member 1 and the strip member 2 are taken up by the tractor 3a F! lt
The sheet member 1 is constructed with a tight tension between a or the lid 3b and the winding shaft b. Predetermined writing can be performed using Exposure 1-., Feltben P, etc., and the written image information is configured to be read by glare removing means 5. Next, see above!・Explaining the means for reading the image information written on the member 1 (a), this reading means 5 reads the image written on the display window 12 from the display window 12.
A light source 6, a gradient index lens array 7, and a same-magnification reading sensor 8 are disposed downstream of the sheet member 2 in the moving direction of the sheet member 1, with the sheet member 1 in between. That is, the sheet member I is irradiated with light from the light source 6 L7, and the transmitted light is read through the lens array 7 and sent to the sensor.
The image is formed on the light receiving cell No. 8. Next, the operation when using the apparatus configured as described above will be explained. First, a predetermined M image is written on the surface of the marked sheet member 1 through the display window 12 with a felt ben P, and when reading the image, select reading mode 1-4 on the operation panel (not shown). Tractor 3a. 3b and the take-up port 10b are driven and rotated, and the sheet member 1 moves at a constant speed in the direction of the arrow, is unwound from the take-up shaft 4b, and is wound onto the take-up shaft 4b. Along with this, the image written on the surface of the sheet member 1 passes the position of the reading means 5 at a constant speed, and at this time, the image portion is irradiated with light from the light source 6, and the light transmitted through the sheet member 1 is imaged on the light receiving cell of the read sensor 8 via the lens array 7, and the read signal is transmitted to a predetermined recording device f (not shown). In the above-mentioned movement U2 of the sheet member 1, the skew movement of the sheet member 1 is caused by the bar fore movement a of the belt-like member 2 and the human tractor 3.
Since the adjustment is carried out by a and 3b, there is no deviation of the sheet member 1 in the direction perpendicular to the moving direction 74. Further, as described above, the tractors 3a, 3b and the take-up roller 1. When the member 1 and the belt-like member 2 are wound around the winding shaft 4b, a space corresponding to the thickness of the belt-like member 2 is present between the front and back surfaces of the sheet member 1. Therefore, the ink image written on the surface of the sheet member 1 by the felt ben P or the like does not come into contact with the back surface of the sheet member 1, so that the ink image will not be missing and the ink will not adhere to the back surface of the sheet member 1. Therefore, the light transmission type reading means 5 can accurately read only the image information written on the surface of the sheet member 1. Furthermore, even if the portion of the sheet member 1 on which the image information is written is once wound up and read again, only the written 'fi information can be accurately read. Note that, contrary to the above case, the sheet member is wound up on the shaft 4b.
The same is true even when the sheet member l is pulled out from the winding shaft 4a and wound up on the winding shaft 4a, and a space corresponding to the thickness of the belt-like member 2 exists between the front and back surfaces of the sheet member l that is wound up on the winding shaft 4a. In addition, the ink image on the surface of the sheet member 10 does not come into contact with the back surface of the sheet member 10, so that the image will not be missing or the ink will not adhere to the back surface. Furthermore, in the embodiment of the front label, an example has been described in which the present invention is applied to a so-called electronic whiteboard device in which both ends of the lj" part member are wound up, but the present invention is not limited to the above example, and for example, A structure in which the sheet member 13 can be stored in the device as shown in FIG. 3 may be similarly applicable.
One end is wound around the winding shaft 16, and by pulling out the free end side in the direction of arrow B, a writing surface is formed. The sheet member 13 has a length of 78 m as in the above-mentioned example.
A strip member 14 having a bar fore sheen is attached to both ends along the direction of arrow B. The sheet member 13 is connected to the winding shaft by a motor (not shown) that drives and rotates the winding roller 17 which drives and rotates the tractor 15 corresponding to the perforation and the winding shaft 16 by friction transmission. 161: It is configured to be wound up. The image written on the surface of the sheet member 13 by 7 Eltben I) etc. is irradiated with light from the light source 19 to the sheet member 13 when the sheet member is wound up, and the emitted light is the same size as the original image. It is configured such that the image information written on the surface of the sheet member 13 is read by the light received by the light-receiving cell of the photosensitive sensor '+-20. As for the sheet member 13!・Tractor 15 and winding shaft 16
It is constructed so that it can be wound up with appropriate tension between the two. In the above device, when the sheet member 13 is pulled out and wound up, the skew movement of the sheet member 13 is regulated and corrected by the perforation tube of the band member 14 and the tractor 15, so that the sheet member 13 in the direction perpendicular to the direction of movement is corrected. There is no deviation of 13. Also, when the sheet member 13 is wound onto the winding shaft 16, the front and back surfaces of the sheet member 13 do not come into direct contact, so that images written on the front surface of the sheet member 13 may be missing and ink may adhere to the back surface. There is no. In any of the configurations of the above embodiments, the writable sheet member is conveyed by a tractor corresponding to the perforation and the perforation of the strip member attached to the sheet member. Since the skew movement of the sheet member is regulated (fl corrected), there is no deviation in the direction perpendicular to the moving direction of the sheet member, making it easy to downsize the device. Since the front and back surfaces of the sheet member do not come into contact with each other, the ink image written on the sheet surface will not be missing or adhere to the back surface of the sheet, and the image can be accurately read by a predetermined reading means. Even if the 100 degree reading is performed after the part of the sheet member on which the J-shaped mark is written is wound up, only the written IS information can be read accurately. Although the case where a type reading sensor is used is shown, it is also possible to use a reading 1q sensor shorter than the width of the sheet member by using a lens in the optical system.Also, in the above embodiment, the reading means Although the reading means is of a light transmission type, a light reflection type reading means may also be used.In that case, it goes without saying that the sheet member does not need to be configured to be light transmission.Furthermore, in the above embodiment, the sheet member Although a band-shaped member having perforated 1)-silane was attached to both ends of the band-shaped member, it is also possible to use a band-shaped member having perforations only at one end and having no perforations at the other end. <Effects of the Invention> As explained above, the present invention attaches a perforated strip member having an appropriate width and thickness to at least one end of a writable sheet member, and transports the sheet member. Since the configuration is such that a tractor corresponding to the perforation is used, the skew movement of the sheet member can be controlled and corrected, and it is easy to eliminate deviations in the direction perpendicular to the direction of movement of the sheet member, making the device more compact and increasing costs. In addition, in the winding section of the sheet member, since there is a space between the front and back surfaces of the sheet member due to the thickness of the strip member, the front and back surfaces of the sheet portion +, ( There is no contact, there is no loss of the image written on the surface of the sheet member, there is no ink adhesion to the back side of the sheet member, and the image can be accurately read by a predetermined reading means. Even if the part where the information was written is re-read after being wound up,
It has features such as being able to accurately read only the written image information.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view showing one embodiment of the present invention, Fig. 2 is an explanatory view of a perforage 1 engine and a corresponding tractor, Fig. 3 is a schematic explanatory view of the other side, and Fig. 4 is an explanatory view of the front side. It is an explanatory view when winding up a conventional sheet member on which an ink image is written. In the figure, 1 and 13 are sheet members, 2 and 14 are strip members, 3a, 3b, and 15 are tractors, and 4a and 4b. 16 is a winding shaft, 10a, 10b, 17
is a winding roller, 5, 18 is a reading means, 6, 19
1 is a light source, 7 is a lens array, and 8.20 is a reading sensor.

Claims (1)

[Claims] A writable sheet member, a winding means for winding up the sheet member, a band member having perforations attached near an end of the sheet member along the winding direction, and a tractor corresponding to the perforations. An image reading device comprising: a conveying means for conveying the sheet member through the sheet member; and a reading means capable of reading image information on the sheet member.