JP2008273677A - Preliminary separating body and automatic feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a preliminary separating mechanism capable of stably performing preliminary separation in an automatic feeder for automatically feeding members to be recorded by the rotation of a feed roller while separating one by one these members by a separating means toward a recording means of a recording device. <P>SOLUTION: Recording sheets P brought into contact, at the ends, with a preliminary separating sloped surface 755 are advanced to a separating pad 72 by the rotation of the feed roller 71 while being preliminarily separated along the preliminary separating sloped surface 755. The preliminary separating sloped surface 755 is pressed by the recording paper sheets P advanced between the preliminary separating sloped surface 755 and the outer peripheral surface of the feed roller 71 and run by the rotation of the feed roller 71. A preliminary separating body 75 is so elastically deformed that the preliminary separating sloped surface 755 is displaced in the direction separating from the outer peripheral surface of the feed roller 71. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an automatic feeding device that automatically feeds a recording material toward a recording execution unit of a recording apparatus one by one by a separating unit by rotation of a feeding roller.

  2. Description of the Related Art A recording apparatus such as an ink jet printer having an automatic feeding apparatus that automatically feeds a recording material such as recording paper to a recording execution means while separating the recording material one by one by a separation means by rotation of a feeding roller is known. . As an example of the separating means, when the recording material is sandwiched between the outer peripheral surface of the feeding roller and the separating surface, the frictional force generated on the contact surface between the outer peripheral surface of the feeding roller and the recording material is smaller. It is known to have a configuration in which a frictional force greater than the frictional force generated on the contact surface between the recording materials acts on the contact surface between the separation surface and the recording material.

  More specifically, the known separating means includes a separation pad having a predetermined friction resistance surface, a retard roller supported by a predetermined driven rotational resistance, and the like, on the outer peripheral surface of the feeding roller. What has the structure pressed with a pressure is common. In such a separating means, the recording material in contact with the outer peripheral surface of the feeding roller is fed by the rotation of the feeding roller, and the other recording material has a leading end of a separation pad or a retard roller. It is locked at the outer peripheral surface, thereby preventing double feeding in which a plurality of recording materials are fed in an overlapping state.

By the way, in the separating means as described above, if a large number of recording materials enter between the outer peripheral surface of the feeding roller and the separating surface, the frictional force is greatly increased and the frictional force is increased. There is a problem in that the balance of force is lost, causing double feeding of the recording material, poor feeding, and paper jam. As an example of the prior art capable of solving such a problem, there is a recording apparatus provided with a frontage regulating device having a preliminary separation function for regulating the number of recording materials entering the separation means on the front side of the separation means. It is known. More specifically, by narrowing the distance between the outer peripheral surface of the feeding roller and the guide surface of the recording material so that only about a few sheets of recording material can enter, a large number of recording materials can be used as separating means. This prevents the entry (see, for example, Patent Document 1).
JP 2004-83269 A

  However, if the distance between the outer peripheral surface of the feeding roller and the recording material guide surface is simply narrowed, the number that can enter between the outer peripheral surface of the feeding roller and the recording material guide surface is determined. There is a risk that an excessive number of recording materials may enter and become jammed by the rotation of the feeding roller.

  Therefore, for example, a member constituting the guide surface is disposed so as to be movable away from the outer peripheral surface of the feeding roller, and the guide surface is urged by a compression spring or the like to a predetermined urging force (hereinafter referred to as “reserve”). It is configured to be urged toward the outer peripheral surface of the feeding roller by “separation load”). Thereby, the interval between the outer peripheral surface of the feeding roller and the guide surface of the recording material can be regulated to a predetermined interval or less with a predetermined preliminary separation load, so that a large number of recording materials enter. Can be prevented. Further, depending on the number of recording materials that have entered between the outer peripheral surface of the feeding roller and the guide surface, the members constituting the guide surface move in a direction away from the outer peripheral surface of the feeding roller. Therefore, it is possible to reduce a possibility that the recording material enters and is clogged between the outer peripheral surface of the feeding roller and the guide surface.

  However, by disposing the members constituting the guide surface of the recording material so as to be movable, when the member constituting the guide surface moves, a sliding frictional resistance is generated in the movable part. This sliding frictional resistance may fluctuate irregularly during sliding due to unevenness of the sliding contact surface, rattling within a manufacturing error range, or the like. Therefore, the pre-separation load is likely to be unstable, and in order to achieve stable pre-separation performance, it is necessary to employ a highly accurate movable mechanism, and it is difficult to achieve stable pre-separation performance at low cost. It was.

  The present invention has been made in view of such circumstances, and the problem is that the recording material is automatically separated by the separating means one by one toward the recording execution means of the recording apparatus by the rotation of the feeding roller. In an automatic feeding apparatus that feeds, a preliminary separation mechanism capable of stable preliminary separation is realized at low cost.

  In order to achieve the above object, according to a first aspect of the present invention, there is provided an automatic feeding that automatically feeds a recording material to a recording execution unit of a recording apparatus one by one by a separating unit by rotation of a feeding roller. In the feeding device, a preliminary separator that regulates the number of recording materials entering the contact surface between the outer peripheral surface of the feeding roller and the separation surface of the separating unit on the upstream side in the feeding direction from the contact surface. Then, the recording material is advanced in the feeding direction by the rotation of the feeding roller so that the recording material sandwiched between the outer peripheral surface of the feeding roller and the separation surface of the separating means is less than a predetermined number. A direction having a guide surface that guides the recording material toward the contact surface, and being separated from the outer peripheral surface of the feeding roller when the guide surface is pushed by the rotation of the feeding roller. The guide surface is elastically deformed so as to be displaced. It is the separation body.

  Thus, since the guide surface is elastically displaced by the elastic deformation of the preliminary separator, it is not necessary to provide a guide surface movable mechanism such as a slide mechanism. Accordingly, the number of parts of the preliminary separation mechanism in which the guide surface is elastically displaced can be greatly reduced and simplified, so that the preliminary separation mechanism in which the guide surface is elastically displaced can be realized at low cost. Further, since the guide surface is elastically displaced by the elastic deformation of the preliminary separator, no sliding friction resistance is generated when the guide surface is elastically displaced. That is, since it is possible to prevent fluctuations in the pre-separation load due to sliding frictional resistance, a desired pre-separation load can be applied to the guide surface with high accuracy and stability.

  Therefore, according to the preliminary separator described in the first aspect of the present invention, automatic feeding is performed while the recording material is separated one by one by the separating means toward the recording execution means of the recording apparatus by the rotation of the feeding roller. In such an automatic feeding apparatus, it is possible to obtain an effect that a preliminary separation mechanism capable of stable preliminary separation can be realized at low cost.

  According to a second aspect of the present invention, in the preliminary separator according to the first aspect described above, the guide surface has both the rotational axis direction of the feeding roller with respect to the outer peripheral surface of the feeding roller. A pre-separation body characterized in that a plurality of parts are arranged separately on the outside and each can be elastically displaced separately.

  As described above, since the guide surface of the preliminary separator is separated from the outer peripheral surface of the feeding roller on both outer sides in the rotation axis direction of the feeding roller, a plurality of guide surfaces are arranged on the outer periphery of the feeding roller. The recording material that has entered between the surface and the guide surface can be brought into contact in a state where the recording material is in surface contact over the entire width of the outer peripheral surface of the feeding roller. Therefore, according to the preliminary separator according to the second aspect of the present invention, the recording material fed by the rotation of the feeding roller is reliably transferred to the separating means along the outer peripheral surface of the feeding roller. I can guide you.

  In addition, when a plurality of recording materials enter between the outer peripheral surface of the feeding roller and the guide surface, the plurality of guide surfaces in contact with the recording material can be separately elastically displaced. It is possible to prevent the guide surface from hitting partly due to the inclination of the feeding roller within the error range. Therefore, according to the preliminary separator according to the second aspect of the present invention, the guide surface is brought into substantially uniform contact with the recording material that has entered between the outer peripheral surface of the feeding roller and the guide surface. Thus, the pre-separation load can be applied stably.

  According to a third aspect of the present invention, in the preliminary separator according to the first aspect or the second aspect described above, an arm portion extending to one end side of the guide surface and the other end side of the guide surface A positioning reference end provided on the base of the automatic feeding device, the tip of the arm being fixed to a mounting portion provided on the base of the automatic feeding device, and the arm being elastically deformed. The guide surface is elastically displaced by the positioning, and the guide surface is positioned in a state in which the positioning reference end is in contact with the contacted portion provided on the base member by the elastic return force of the arm portion. The preliminary separator.

  In the pre-separation mechanism in which the guide surface is elastically displaced, it is important to set the pre-separation load appropriately in order to achieve good pre-separation, but the positional accuracy of the guide surface relative to the outer peripheral surface of the feeding roller is important. Is also important. When the guide surface is configured to be elastically displaced by the elastic deformation of the arm portion, in order for the arm portion to be elastically deformed and bent, the arm portion from the tip of the arm portion fixed to the base of the automatic feeding device to the guide surface The length must be a certain length or more. For this reason, if the tip of the arm is used as a positioning reference, the influence of dimensional variation within the manufacturing error range will increase, resulting in a large variation in the position of the guide surface when attached to the base of the automatic feeder. Thus, it becomes difficult to achieve stable preliminary separation.

  Therefore, the positioning reference end provided on the other end side of the guide surface is used as a guide for positioning the guide surface. More specifically, the preliminary separator disposed in a state where the tip of the arm portion is fixed to the base of the automatic feeding device is provided on the base of the automatic feeding device by the elastic return force of the arm portion. By positioning the positioning reference end in contact with the contacted portion, the guide surface is positioned with respect to the base of the automatic feeding device. Since the positioning reference end can be provided at a position very close to the guide surface at the other end side of the guide surface, the guide surface should be positioned with high accuracy relative to the base of the automatic feeding device. Is possible.

  Therefore, according to the preliminary separator according to the third aspect of the present invention, the position of the guide surface with respect to the outer peripheral surface of the feeding roller can be positioned with high accuracy, and thus a better preliminary Separation can be realized stably.

According to a fourth aspect of the present invention, there is provided an automatic feeding apparatus for automatically feeding a recording material while separating the recording material one by one by a separating means toward a recording execution means of the recording apparatus by rotation of a feeding roller. An automatic feeding device comprising the preliminary separator according to any one of the first to third aspects.
According to the automatic feeding device of the fourth aspect of the present invention, the recording material is automatically fed while being separated one by one by the separating means toward the recording execution means of the recording apparatus by the rotation of the feeding roller. In the automatic feeding device, it is possible to obtain the operational effects of the invention according to any one of the first to third aspects described above.

  A fifth aspect of the present invention is the automatic feeding device according to the fourth aspect described above, wherein the separating means sandwiches the recording material between the outer peripheral surface and the separating surface of the feeding roller. Sometimes, the contact force between the separation surface and the recording material is smaller than the friction force generated on the contact surface between the outer peripheral surface of the feeding roller and the recording material and larger than the friction force generated on the contact surface between the recording materials. It is an automatic feeding device characterized by acting on.

  In the separating means having such a configuration, if a large number of recording materials enter between the outer peripheral surface of the feeding roller and the separating surface, the frictional force increases greatly, and The balance is lost, causing double feeding or feeding failure of the recording material, paper jam, and the like. In the automatic feeding device according to the fifth aspect of the present invention, the number of recording materials entering the contact surface between the outer peripheral surface of the feeding roller and the separation surface of the separating means is determined from the contact surface in the feeding direction. Therefore, the possibility of a large number of recording materials entering between the outer peripheral surface of the feeding roller and the separation surface can be reduced. Therefore, according to the automatic feeding device described in the fifth aspect of the present invention, it is possible to reduce the possibility that the recording material may be double-fed, poorly fed, or jammed.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a schematic configuration of the inkjet printer 50 and the automatic feeding device 70 according to the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a side sectional view of an essential part of an ink jet printer 50 as an example of a recording apparatus. FIG. 2 is a perspective view of the automatic feeding device 70 according to the present invention.
The ink jet printer 50 includes a conveyance driving roller 51, a conveyance driven roller 52, a platen 53, a paper discharge driving roller 54, and a paper discharge driven roller as “recording execution means” for performing recording on the recording paper P as a “recording material”. 55, a carriage 61 and a recording head 62 are provided. The recording paper P fed from the automatic feeding device 70 is sandwiched between a conveyance driving roller 51 and a conveyance driven roller 52 as “conveying means”, and is conveyed in a predetermined direction in the conveyance direction Y by the driving rotation of the conveyance driving roller 51. It is conveyed on the platen 53 by an amount.

  A recording head 62 is disposed at the bottom of the carriage 61. The carriage 61 is supported so as to be able to reciprocate in a direction substantially perpendicular to the transport direction Y while maintaining a state in which the head surface of the recording head 62 and the recording surface of the recording paper P on the platen 53 are substantially parallel and at a constant interval. Has been. Recording is performed on the recording paper P conveyed on the platen 53 by ejecting ink from the head surface of the recording head 62 while the carriage 61 reciprocates in a direction substantially perpendicular to the conveyance direction Y. The recording paper P after recording is sandwiched between the paper discharge drive roller 54 and the paper discharge driven roller 55, and is transported in the transport direction Y by the drive rotation of the paper discharge drive roller 54 and discharged.

  The ink jet printer 50 is equipped with an automatic feeding device 70 that automatically feeds the recording paper P one by one toward the transport driving roller 51. The automatic feeding device 70 includes a feeding roller 71 as “feeding means”, a separation pad 72 as “separation means”, a hopper 73, a return lever 74, a preliminary separator 75, and a protrusion as “attached part”. A section 76 and a feeding path 77.

  The automatic feeding device 70 is provided with a feeding cassette (not shown) as a “recording material placing portion”, and the recording paper P stacked in the feeding cassette is a hopper 73. It is pushed and pressed against the outer peripheral surface of the feeding roller 71. As shown in the drawing, the feeding roller 71 has a substantially D-shaped side view, and is integrally disposed on a rotating shaft 711 that rotates by transmitting the rotation of a rotational driving force source. The recording paper P pressed against the outer peripheral surface of the feeding roller 71 is advanced to the nipping surface between the transport driving roller 51 and the transport driven roller 52 via the feeding path 77 by the driving rotation of the feeding roller 71. Is fed in the feeding direction (the same direction as the conveying direction Y, hereinafter referred to as the feeding direction Y).

  At this time, the recording paper P to be fed, which is in contact with the outer peripheral surface of the feeding roller 71, is separated from the other recording paper P and locked by a known separation pad 72, and the recording paper P is double-fed. Is prevented. The separation pad 72 has a predetermined frictional resistance on the separation surface facing the outer peripheral surface of the feeding roller 71. When the recording paper P is sandwiched between the feeding roller 71 and the separation surface of the separation pad 72, the friction force generated between the outer peripheral surface of the feeding roller 71 and the recording paper P is smaller than the friction force between the recording papers P. A friction force larger than the friction force generated on the contact surface acts on the contact surface between the separation surface and the recording paper P. The recording paper P in contact with the outer peripheral surface of the feeding roller 71 is fed in the feeding direction Y by the rotation of the feeding roller 71, and the other recording paper P is related to the separation surface of the separation pad 72. Thus, double feeding of the recording paper P is prevented.

  In the hopper 73, one end side of the arm portion 732 is pivotally supported by the swing shaft 733. The arm portion 732 is biased in the direction of swinging to the feeding roller 71 by the spring force of the torsion coil spring 734. On the other end side of the arm portion 732, a pressing surface 731 that presses the recording paper P against the outer peripheral surface of the feeding roller 71 is disposed. The return member 74 disposed on the upstream side in the feeding direction Y of the feeding path 77 is in a state in which the fed recording paper P can be conveyed in the conveying direction Y by the driving rotation of the conveying driving roller 51. Thereafter, the recording paper P is rocked so as to advance into the feeding path 77, and the recording paper P locked to the separation pad 72 is pushed back to the feeding cassette (not shown). In the preliminary separator 75, the number of recording sheets P entering the contact surface between the outer peripheral surface of the feeding roller 71 and the separation pad 72 is equal to or less than a predetermined number on the upstream side in the feeding direction Y from the contact surface. To regulate.

Next, the preliminary separator 75 according to the present invention will be described with reference to FIGS.
FIG. 3 is a perspective view of the preliminary separator 75 according to the present invention. FIGS. 4 and 5 are enlarged side sectional views of the automatic feeding device 70 showing an enlarged portion where the preliminary separator 75 is disposed. FIG. 4 shows a state where the preliminary separator 75 is not elastically deformed. FIG. 5 shows a state in which the preliminary separator 75 is elastically deformed.

First, the configuration of the preliminary separator 75 will be described with reference to FIGS. 3 and 4.
The preliminary separator 75 is made of a single metal member having elasticity formed by sheet metal processing. The preliminary separator 75 has a preliminary separation slope 755 as two “guide surfaces”. As shown in the figure, the two preliminary separation slopes 755 are each provided with an arm portion 753 that supports the preliminary separation slope 755 so as to be elastically displaceable, and are extended to one end side. A mounting portion 751 is provided. Further, as shown in the drawing, two recording paper contact surfaces 754 and a positioning reference end 757 are provided on the other end side of the two preliminary separation inclined surfaces 755. An attachment hole 752 is formed in the attachment portion 751.

  The preliminary separator 75 having such a configuration is placed at a predetermined position in the feeding path 77 in a state where the mounting hole 752 of the mounting portion 751 is fitted to the protrusion 76 provided on the base of the automatic feeding device 70. Arranged. In a state in which the preliminary separator 75 is disposed at a predetermined position in the feeding path 77, the separation pad 72 is located between the two arm portions 753 and the feeding roller 71 passes between the two arm portions 753. It will be in the state which faced the outer peripheral surface. The support portion 756 presses the attachment portion 751 against the surface on which the projection portion 76 is formed in a state where the support portion 756 is in contact with the supported portion 78 provided on the base of the automatic feeding device 70. Accordingly, the attachment portion 751 is prevented from being detached from the projection portion 76 when the arm portion 753 is elastically deformed along with the elastic displacement of the preliminary separation slope 755.

  The positioning reference end 757 provided at a position close to the preliminary separation inclined surface 755 comes into contact with the contacted portion 79 provided on the base of the automatic feeding device 70 by the elastic restoring force of the arm portion 753 (reference E). . Thereby, the preliminary separator 75 is positioned with respect to the preliminary separation slope 755 with respect to the base of the automatic feeding device 70. Thus, by providing the positioning reference end 757 at a position close to the preliminary separation slope 755, the preliminary separation slope 755 is positioned with high accuracy with respect to the base of the automatic feeding device 70, and the preliminary separator 75 is disposed. can do. Therefore, since the position of the preliminary separation slope 755 with respect to the outer peripheral surface of the feeding roller 71 can be positioned with high accuracy, it is possible to stably realize good preliminary separation by the preliminary separator 75.

  The preliminary separator 75 is not particularly limited to a metal member formed by sheet metal processing, and is formed of a flexible member capable of obtaining an elastic force capable of realizing a desired preliminary separation load. Any thing can be used.

Next, the preliminary separation of the recording paper P by the preliminary separator 75 will be described with reference to FIGS. 4 and 5.
The hopper 73 advances toward the outer peripheral surface of the feeding roller 71 when feeding the recording paper P, and a plurality of recording papers P whose leading ends are in contact with the recording paper contact surface 754 and the preliminary separation inclined surface 755. Is pressed against the outer peripheral surface of the feeding roller 71 with a predetermined pressing load (reference A). The recording paper contact surface 754 is an upward slope toward the outer peripheral surface of the feeding roller 71. On the other hand, the preliminary separation slope 755 is a downward slope toward the outer peripheral surface of the feeding roller 71. Due to the driving rotation of the feeding roller 71 in the rotation direction B, a force that is moved in the direction indicated by reference numeral C acts on the plurality of recording papers P pressed against the outer peripheral surface of the feeding roller 71 ( FIG. 4).

  The recording paper P whose leading end is in contact with the recording paper contact surface 754 is locked to the recording paper contact surface 754 that is a surface substantially orthogonal to the direction indicated by reference numeral C. On the other hand, the recording paper P having the leading end in contact with the preliminary separation slope 755 enters the separation pad 72 while being preliminarily separated along the preliminary separation slope 755 by the rotation of the feeding roller 71. Go. In other words, the preliminary separating inclined surface 755 is fed by the rotation of the feeding roller 71 so that the recording paper P sandwiched between the outer peripheral surface of the feeding roller 71 and the separation surface of the separation pad 72 becomes a predetermined number or less. It plays a role of preliminarily separating the recording paper P traveling in the feeding direction Y and guiding it toward the separation pad 72 (FIG. 5).

  At this time, the preliminary separating inclined surface 755 enters between the preliminary separating inclined surface 755 and the outer peripheral surface of the feeding roller 71 by the rotation of the feeding roller 71 and is going to advance in the direction indicated by the symbol C. Pushed by P. Further, the preliminary separator 75 is fixed to the base body of the automatic feeding device 70 by an attachment portion 751 provided at the tip of the arm portion 753. Thereby, the preliminary separating body 75 is elastically deformed so that the preliminary separating inclined surface 755 is displaced in a direction away from the outer peripheral surface of the feeding roller 71 (a direction indicated by reference sign D) (FIG. 5). Then, a predetermined number or less of recording sheets P whose leading ends have reached the separation pad 72 are sandwiched between the outer peripheral surface of the feeding roller 71 and the separation pad 72, and are separated by the separation pad 72. Only one sheet of recording paper P in contact with the outer peripheral surface is fed in the feeding direction Y.

  As described above, in the automatic feeding device 70 according to the present invention, the preliminary separation slope 755 is elastically displaced by the elastic deformation of the preliminary separation body 75, so that it is compared with the case where the movable mechanism of the guide surface by the slide mechanism or the like is provided. The number of parts of the preliminary separation mechanism can be greatly reduced and simplified, and the preliminary separation mechanism can be realized at low cost. Further, since the preliminary separation slope 755 is elastically displaced by the elastic deformation of the preliminary separation body 75, no sliding friction resistance is generated when the preliminary separation slope 755 is elastically displaced. That is, since the fluctuation of the preliminary separation load due to the sliding frictional resistance does not occur, the desired preliminary separation load can be applied to the preliminary separation slope 755 with high accuracy and stability.

  Further, the two preliminary separating slopes 755 are arranged separately on both outer sides in the rotation axis direction of the feeding roller 71 with respect to the outer peripheral surface of the feeding roller 71. As a result, the recording paper P that has entered between the outer peripheral surface of the feeding roller 71 and the preliminary separation slope 755 comes into contact with the entire width of the outer peripheral surface of the feeding roller 71 in surface contact. That is, the preliminary separator 75 can reliably guide the recording paper P fed by the rotation of the feeding roller 71 to the separation pad 72 along the outer peripheral surface of the feeding roller 71.

  Furthermore, since the two preliminary separating inclined surfaces 755 are provided at the ends of the separate arm portions 753, they can be independently elastically displaced independently. That is, even if the rotation axis of the feeding roller 71 is inclined within the range of manufacturing errors, the two preliminary separating inclined surfaces 755 can be displaced separately following the inclination. Thereby, it is possible to prevent the pre-separation inclined surface 755 from hitting one piece due to the inclination of the feeding roller 71 within the manufacturing error range. Therefore, the preliminary separating body 75 stably makes the preliminary separating slope 755 abut evenly against the recording paper P that has entered between the outer peripheral surface of the feeding roller 71 and the preliminary separating inclined face 755. A separation load can be applied.

  As described above, according to the preliminary separator 75 according to the present invention, the “separation means” such as the separation pad 72 is directed toward the conveyance drive roller 51 of the inkjet printer 50 by rotating the feeding roller 71. In the automatic feeding apparatus 70 that automatically feeds while separating one by one, a preliminary separation mechanism capable of stable preliminary separation can be realized at low cost.

FIG. 6 is a perspective view illustrating another embodiment of the preliminary separator 75 according to the present invention.
As another embodiment of the preliminary separator 75 according to the present invention, the two preliminary separation slopes 755 are not separated and arranged on the left and right, but the preliminary separation slopes 755 are integrally formed so as to form a series of slopes as shown in the figure. It can also be formed. The rest is the same as the preliminary separator 75 shown in FIG.

  When the preliminary separation slope 755 is separated to the left and right (FIG. 4), both side ends of the two preliminary separation slopes 755, that is, the four edges come into contact with the recording surface of the recording paper P. On the other hand, when the preliminary separation inclined surface 755 is integrally formed (FIG. 6), only both side ends of the single preliminary separation inclined surface 755, that is, two edges come into contact with the recording surface of the recording paper P. . Therefore, the preliminary separating body 75 in the other embodiment further reduces the possibility that edge traces may be formed on the surface of the recording paper P that contacts the preliminary separating inclined surface 755 when the recording paper P is preliminarily separated on the preliminary separating inclined surface 755. There is an advantage that can be made.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

It is principal part side sectional drawing of an inkjet printer. It is a perspective view of the automatic feeding apparatus which concerns on this invention. It is a perspective view of the preliminary separator concerning the present invention. It is principal part side sectional drawing of the automatic feeding apparatus which expanded and illustrated the preliminary separator. The state in which the preliminary separator is elastically deformed is illustrated. FIG. 6 is a perspective view illustrating another embodiment of the preliminary separator according to the present invention.

Explanation of symbols

50 Inkjet Printer, 51 Transport Drive Roller, 52 Transport Driven Roller, 53 Platen, 54 Discharge Drive Roller, 55 Discharge Driven Roller, 61 Carriage, 62 Recording Head, 70 Automatic Feeder, 71 Feed Roller, 72 Separation Pad, 73 Hopper, 74 Return lever, 75 Preliminary separator, 76 Protruding part, 77 Feeding path, 751 Mounting part, 753 Arm part, 754 Recording paper contact surface, 755 Preliminary separating slope, 756 Support part, 757 Positioning reference end, P Recording paper, Y Recording paper feed direction and transport direction

Claims (5)

In an automatic feeding apparatus that automatically feeds a recording material to a recording execution means of a recording apparatus one by one by a separating means by rotation of a feeding roller, the outer peripheral surface of the feeding roller and the separating means A pre-separator that regulates the number of recording materials entering the contact surface with the separation surface on the upstream side in the feeding direction from the contact surface,
The recording material that advances in the feeding direction by the rotation of the feeding roller so that the recording material sandwiched between the outer peripheral surface of the feeding roller and the separation surface of the separating means is equal to or less than a predetermined number. A guide surface for guiding toward the contact surface;
The reserve is elastically deformed so that the guide surface is displaced in a direction away from the outer peripheral surface of the feed roller when the guide surface is pushed by the rotation of the feed roller. Separation body.   2. The preliminary separator according to claim 1, wherein a plurality of the guide surfaces are arranged separately on both outer sides in the rotation axis direction of the feeding roller with respect to the outer circumferential surface of the feeding roller, and each of the guide surfaces is separately provided. A pre-separator that is elastically displaceable. The preliminary separator according to claim 1 or 2, comprising an arm portion extending to one end side of the guide surface, and a positioning reference end provided on the other end side of the guide surface,
The tip of the arm is fixed to a mounting portion provided on a base of the automatic feeding device, and the guide surface is elastically displaced by elastically deforming the arm, and the positioning reference The preliminary separating body, wherein the guide surface is positioned in a state in which an end is in contact with an abutted portion provided on the base body by an elastic return force of the arm portion.   4. An automatic feeding device that automatically feeds a recording material while separating the recording material one by one by a separating means toward a recording execution means of the recording apparatus by rotation of a feeding roller. An automatic feeding device comprising the preliminary separator according to 1. 5. The automatic feeding apparatus according to claim 4, wherein the separating means is configured to hold the recording material between the outer circumferential surface of the feeding roller and the separation surface, and the outer circumferential surface of the feeding roller and the coated surface. Automatic feeding characterized in that a frictional force that is smaller than the frictional force generated on the contact surface with the recording material and larger than the frictional force generated on the contact surface between the recording materials acts on the contact surface between the separation surface and the recording material. apparatus.

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