JP2006160379A - Image forming and reading apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the cost and size of a scanner printer of an image forming and reading apparatus. <P>SOLUTION: A separating and transporting part of a BJ printer is used as it is to separate a document, and a document placing table and a document presence/absence detecting sensor are newly disposed to improve the convenience in use and enable application to a facsimile. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a digital image forming / reading apparatus, and more particularly to an image forming / reading apparatus and a facsimile apparatus in which an image forming unit is an ink jet recording system.

  FIG. 5 shows a schematic sectional view of a conventional image forming / reading apparatus of this type.

  In this figure, 1 is an image forming member (hereinafter referred to as recording paper 1) and is conveyed in the direction of arrow B in the figure. Reference numeral 8 denotes an image reading member (hereinafter referred to as a document 8) which is conveyed in the direction of arrow A in the figure. Reference numeral 9 denotes a separation / conveying roller which cooperates with the friction piece 10 to rotate and separate the separation roller 9 in the direction of the arrow a, thereby separating and conveying a plurality of documents 8 one by one. It is separated and conveyed downstream of the separation roller 9 shown in the direction. Next, reference numeral 3 denotes a contact sensor-3 having a photoelectric conversion element and a light source, which sequentially reads the image information of the document 8 guided to the reading position by the guide 15, where 3a in FIG. Further, reference numeral 4 denotes a line feeder (hereinafter referred to as LF roller) representing the reading position, and the document 8 and the recording paper 1 are conveyed by the cooperation of the backup roller 5 and the LF roller 4. Become.

  Next, reference numeral 11 denotes a recording paper loading table, on which an intermediate plate (pressing member for pressing the recording paper separating roller 9) 13, an intermediate plate spring 12, and a separation claw 14 are disposed. When the separation roller 9 rotates in the direction of the arrow b, the recording paper 1 loaded on the recording paper 1 is separated and conveyed sequentially one by one by the cooperation of the above components. As shown in the figure, the recording paper 1 separated and conveyed is sandwiched and conveyed between the LF roller 4 and the backup roller 5 and images are sequentially formed by the recording components 2. Here, the recording component 2 is an ink jet recording apparatus, and images are sequentially formed by repeating reciprocation in the depth direction with respect to the drawing.

  As described above, the original 8 from which the image has been read and the recording paper 1 on which the image has been formed are discharged out of the apparatus by the cooperation of the discharge roller 6 and the discharge roller 7 in the figure.

  Here, the conveyance force of the recording paper 1 by the paper discharge roller 6 and the paper discharge roller 7 becomes a sufficiently small value so as not to affect the paper feeding accuracy of the recording paper 1 by the LF roller 4 and the backup roller 5. ing.

  Further, during the operation of forming an image on the recording paper 1, the intermediate plate 13 is lowered so that the frictional force of the separation roller 9 does not affect the recording paper 1.

  When copying with this apparatus, the image information of the original is scanned for at least one page, the scanned image information is stored in a memory (not shown), and then another sheet is conveyed to obtain the image information. Form an image.

  In addition, as shown in FIG. 6, the recording component 2 is removable, and the user places the scanner cartridge 3 in place of the recording component 2 on the middle plate 13 or the recording paper stacking base 11. There is also a conventional example in which the original 8 is set on the top of the recording paper 1 and the apparatus is used as a scanner.

Further, as another conventional example, for example, Patent Document 1 can be cited.
JP 2003-321143 A

  However, in the above-described conventional example, in the system shown in FIG. 5, if the LF roller 4 and the separation roller 9 are driven by the same drive source, the LF roller 4 rotates in the direction of arrow a in the figure, for example, during scanning or printing. However, the separating roller 9 needs to be rotated in the directions of arrows a and b in the drawing, respectively, and there is a problem that the drive transmission means becomes complicated and the cost is increased.

  Further, in the conventional method shown in FIG. 6, it is impossible to identify whether the sheet on the intermediate plate 13 is a recording sheet or an original, so that there is a problem that the recording sheet is scanned or printed on the original. Further, since the facsimile using the conventional image forming / reading apparatus cannot identify whether the sheet on the intermediate plate 13 is a recording sheet or a document, functions such as document timer transmission and document polling reception are provided. There was a problem that the function as a facsimile could not be installed and was severely limited.

  In order to solve the above problem, a first invention according to the present application is to set the image reading member stacking base for initially setting the image reading member and the image forming member to be initially set. The image forming member stacking table, means for detecting whether the image reading member is on the image reading member stacking table, the image reading member, the front end portion and the rear of the image forming member And a means for separating and conveying the image reading member and the image forming member, and a means for conveying the image reading member and the image forming member. .

  According to a second aspect of the present invention, the means for separating and conveying the image reading member and the image forming member is a nail separation type separation means.

  The third invention is characterized in that the means for separating and conveying the image reading member and the image forming member is a separation pad type separation means.

  The fourth invention is characterized in that an ink jet recording system that performs non-contact recording from the recording system is used.

  According to a fifth aspect of the present invention, a facsimile apparatus is constructed using the image forming and reading apparatus according to the present invention.

  As described above, the image reading member stacking base for initially setting the image receiving member, the image forming member stacking base for initially setting the image forming member, and the target Means for detecting whether or not an image reading member is on the image reading member stacking base; means for detecting the image reading member and leading and trailing ends of the image forming member; and image reading By adding a member for separating and conveying the member and the image-forming member, and a means for conveying the image-reading member and the image-forming member, only a few parts are added to the mechanical parts of the conventional printer. Thus, a scanner and a printer can be realized, and the cost can be reduced. Further, by using pad separation as the separation means, there is an effect of reducing the double feed rate at the time of separation and an effect of improving quality. Further, there is an effect that it can be applied to a facsimile or the like.

  FIG. 1 is a central sectional view of an image forming and reading apparatus according to the present invention, and FIG. 2 is a schematic perspective view of FIG.

  In this figure, reference numeral 1 denotes an image forming member (hereinafter referred to as recording paper 1) which is conveyed in the direction of arrow B in the figure.

  Reference numeral 8 denotes an image reading member (hereinafter referred to as an original 8) which is also conveyed in the direction of arrow B in the figure. First, the operation of the apparatus when reading the document 8 will be described. First, the document stacking table 22 is restricted by the side regulating plates 23a and 23b in the width direction of the document 8. Here, 23a is fixed, and the side of the document 8 on the side of the nail 14 to be described later is arranged as if sandwiched between the nail 14. The document loading table 8 has a document presence / absence check 24 to detect whether the user of the apparatus has set the document 8 on the document loading table 22. FIG. 1 shows the state of the original 8 initially set by the user. Here, FIG. 1 shows a state in which the recording paper 1 (to be described later) is stacked in advance and the document 8 is stacked. However, if there is no recording paper 1, it is directly stacked on the intermediate plate 13 (to be described later). It will be. Next, reference numeral 21 denotes a separation / conveying roller. When the middle plate 13 in the drawing is lifted by the middle plate spring 12, the uppermost document 8 of the document 8 comes into contact with the separation roller 21 and is separated and conveyed. -When the roller 21 rotates in the direction of the arrow b in the drawing and cooperates with the claw 14, the document 8 is sequentially separated and conveyed in the direction of the arrow B from the top of the document 8. Here, the intermediate plate 13 is rotatably supported by the intermediate plate support 11. The above-described operation is a standard operation of the generally-known nail separation method. The originals 8 separated and conveyed one by one are guided by the upper guide 19 and the platen 16 in the figure, and the paper edge sensor 19 detects when the leading edge of the original 8 has passed. Reference numeral 4 denotes a line feeder (hereinafter referred to as LF roller) which is driven by a drive transmission means comprising a normal gear or pulley (not shown) by a drive source such as a motor (not shown). Reference numeral 5 denotes a backup roller of the LF roller 4, and the original 8 is conveyed by the cooperation of the roller 5 and the LF roller 4. As described above, the document 8 is sandwiched and conveyed between the LF roller 4 and the backup roller 5, and further conveyed by the discharge roller 6 and the discharge backup roller 7. Now, the reference numeral 3 denotes a photoelectric conversion element and a light source. The contact sensor-3 is provided to sequentially read the image information of the document 8 conveyed by the discharge roller 6 and the discharge backup roller 7 and guided to the reading position of the contact sensor 3, where 3 is a light source. Any other photoelectric conversion element such as a CCD provided with 3 may be used, and reference numeral 3a in FIG.

  Next, the operation of the recording paper 1 will be described.

  Reference numeral 11 denotes a recording paper stacking base, which is provided with the intermediate plate 13, the intermediate plate spring 12, and the separation claw 14 as described above, and the recording loaded on the intermediate plate 13 in the same manner as the separation operation of the document 8. When the separation roller 9 rotates in the direction of the arrow b, the paper 1 separates and conveys the plurality of recording papers 1 one by one in cooperation with each other. The recording paper 1 separated and conveyed one by one is guided by an upper guide 19 and a platen 16 in the figure in the same manner as the original 8, and the paper edge sensor 19 detects when the leading edge of the recording paper 1 has passed. As shown in the drawing, the image is sandwiched between the LF roller 4 and the backup roller 5 and conveyed, and images are sequentially formed by the recording component 2. Here, the recording component 2 is an ink jet recording apparatus, and images are sequentially formed by repeating reciprocation in the depth direction with respect to the drawing. Next, reference numeral 2 denotes a recording component which forms an image by ejecting ink or the like onto the recording paper 1. Here, a plurality of ink ejection openings are arranged in the recording component 2 in the direction of arrow A in the figure. In other words, the recording paper 1 is conveyed by the LF roller 4 and is temporarily stopped, and the recording component 2 reciprocates in the depth direction with respect to this figure to form an image. After the image is formed, the recording is performed. Images are sequentially formed by repeating the operation of transporting the paper 1 by the LF roller 4 and stopping it once. Further, the pressing force of the backup roller 7 against the paper discharge roller 6 is also made sufficiently small so that the LF roller of the recording paper 1 even if the leading edge of the recording paper 1 is sandwiched between the paper discharge roller 6 and the backup roller 7. The conveyance accuracy by the roller 4 is configured to be maintained. Here, the recording component 2 is slidably supported on the shaft 17, and the recording component 2 is fixed to the belt 9. The belt 9 is located between the pulley 10 and a pulley (not shown). The pulley 9 is fixed to the shaft of the motor 8.

  Reference numeral 11 denotes a frame which supports the constituent elements in the figure.

  Due to the configuration as described above, the recording component 2 reciprocates in the directions of arrows C and D in the figure as the motor 20 rotates.

  FIG. 3 is a cross-sectional view of the separation conveying means in the above-described embodiment realized by the separation pad method, and FIG. 4 is a schematic perspective view of FIG. A high friction coefficient member pad 25 such as rubber is provided in place of the claw 14, and the pad 25 is pressed against the separation roller 21 by a pad spring 26. Also in this configuration, the uppermost sheet of the document 8 or the uppermost sheet of the recording sheet 1 is pressed against the separation roller 21 by the intermediate plate 13 and conveyed and sequentially separated from the uppermost sheet by the cooperative action of the pad 25 and the separation roller 21. Be transported.

  Thus, the apparatus can identify whether the document 8 is set by the signal of the document presence / absence detection 24, and the document separation roller 21 is rotated in the direction of the arrow b in the state where the document 8 is present, for a predetermined time or a predetermined number of steps. If the paper edge sensor 19 cannot detect the paper even when the motor rotates, it can be identified that the original 8 is jammed. Furthermore, when the paper edge sensor 19 detects the leading edge of the document 8, the reading start position of the document 8 can be accurately performed.

  Similarly, when the separation conveying roller 21 is rotated in the direction of the arrow b in the absence of the document 8, it is a time when a printing operation is performed and the sheet edge sensor is rotated even if the motor rotates for a predetermined time or a predetermined number of steps. When -19 cannot detect the paper, the apparatus recognizes that the recording paper 1 is not stacked or that the recording paper 1 is jammed.

  When a facsimile is constructed using the apparatus as described above, the document timer can be transmitted or the document polling can be transmitted in the state where the document 8 is present, but the reception printing is disabled, and this state is changed to the partner transmitter. Or a memory-receiving operation is performed.

  In addition, when there is no document 8, reception printing is possible.

Central sectional view of the first embodiment according to the present invention 1 is a perspective view of FIG. Central sectional view of the second embodiment of the present invention 3 is a perspective view. Cross section of conventional example Cross section of conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recording paper 2 Recording component 3 Photoelectric conversion element by a contact sensor 4 LF roller 8 Original

Claims (5)

  An image forming and reading apparatus for reading an image after separating a plurality of image reading members and forming an image after separating the plurality of image forming members, and for setting the image reading member initially Detecting whether or not the image reading member stack is on the image reading member stacking base, the image forming member stacking base for initially setting the image forming member, and the image reading member Means for detecting, an image reading member, a means for detecting a leading end and a rear end of the image forming member, a means for separating and conveying the image reading member and the image forming member, and the image reading An image forming and reading apparatus comprising a member and a means for conveying the image forming member.   2. The image forming / reading apparatus according to claim 1, wherein the image reading member and the means for separating and conveying the image forming member are of a nail separation type.   2. The image forming / reading apparatus according to claim 1, wherein the image reading member and the means for separating and conveying the image forming member are of a separation pad type.   3. An image forming and reading apparatus according to claim 1, wherein said image forming means is an ink jet type image forming means.   A facsimile apparatus using the image forming and reading apparatus according to claim 1, 2 or 3.

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