JP5218966B2 - Impeller receipt transport and holding mechanism in printer - Google Patents

Description

The present invention relates to an impeller-type receipt conveyance and holding mechanism in a printer.

  As a first conventional technique, a copying paper transport mechanism using an impeller in a copying machine will be described with reference to FIG.

  The impeller 31 is fixed to the rotary shaft 32 and has three simple blades 31a around it. When the impeller 31 rotates, the copy sheets are sequentially conveyed by the three blades 31a.

  As a conventional second technique, a continuous paper folding stacker will be described with reference to a publication distributed before the present application (see, for example, Patent Document 1).

  FIG. 12A is a front view of the main part, showing a state in which the continuous paper p is stacked on the mounting table 43 by using a pair of impellers 45 so that the perforation of the continuous paper p is folded.

  A left and right symmetrical mountain-shaped pillow 46 having the highest central portion is fixed to the upper surface of the mounting table 43. If the pillow 46 is not present, the perforation portion is not completely folded, so that the stacked continuous paper p swells on both the left and right sides as the load increases, and has a valley shape with the lowest center portion. Collapse. In order to prevent this, the pillow 46 is used.

  The mounting table 43 is mounted on a support plate 47 through a slide rail 48 so as to be freely drawn out from a front opening (not shown) of the housing 41. The support plate 47 is supported by an elevating mechanism 49, and is detected using a pressure sensor or the like whenever the continuous paper p pressed by the impeller 45 reaches a certain amount, and the elevating mechanism 49 is controlled and driven. The mounting table 43 is lowered by a predetermined amount.

  The pair of impellers 45 are arranged on the left and right sides of the mounting table 43 with a predetermined interval. The impeller 45 is configured by fixing a plurality of blades 45b at appropriate intervals in the axial direction of the rotation shaft 45a at positions where the angles are sequentially shifted in the direction around the axis.

  In this way, the continuous paper p discharged from the discharge port of the printer or the like falls by its own weight from the upper surface opening 42 of the housing 41 toward the upper surface of the mounting table 43, and has a perforation of the continuous paper p. The part is captured by the rotating impeller 45 and pressed against the upper surface of the pillow 46. Thereby, the continuous paper p is folded and stacked.

  FIG. 12B is a front view of the interlocking mechanism between the impeller and the swing plate.

  A swing plate 50 is provided above each impeller 45. FIG. 12B shows only the left swing plate 50 of FIG. 12A for convenience. The swing plate 50 is swingably supported by a rotating shaft 51 supported by the housing 41 at one end in the width direction, and is biased by a spring or gravity so that the other end is tilted toward the top surface of the mounting table 43. Has been. In the housing 41, a belt 55 is stretched between a pulley 52 fixed on the rotation shaft 45 a of each impeller 45 and a pulley 54 fixed on the rotation shaft 53, and a cam is formed on the rotation shaft 53. 56 is fixed.

  A cam follower 59 attached to one end of a cam lever 58 supported by a fulcrum 57 is in contact with the peripheral surface of the cam 56. The other end of the cam lever 58 extends to the vicinity of the base end of the swing plate 50 and is in contact with the swing plate 50. While the cam follower 59 is in contact with the small-diameter portion 56a of the cam 56, the swing plate 50 biased by a spring or gravity is placed at the lower end as shown by the solid line. 43 is held in a state of being inclined downward in the upper surface direction.

  On the other hand, when the cam 56 rotates in conjunction with the rotation of the impeller 45 and the cam follower 59 comes into contact with the large diameter portion 56b, the cam lever 58 rotates and swings as shown by a one-dot chain line. The moving plate 50 is rotated upward until it is almost vertical. The timing is set so that the rising and tilting of the swing plate 50 is performed at least once each time one perforation portion of the continuous paper p descending from a discharge port of a printer or the like falls into the opening 42. ing.

  As a conventional third technique, a forced paper discharge mechanism in a printer will be described with reference to publications distributed before the present application (see, for example, Patent Document 2).

  FIG. 13 is a side view showing a process in which the cutter device cuts continuous paper. Here, in the cutter device 61, a guide path 73 is positioned between the movable blade 63 and the fixed blade 62, and the guide path 73 extends from that portion to a receipt issuing port (not shown). In a region between them, a guide path 73 is formed by a guide surface 63a formed on the upper surface of the movable blade 63 and a regulating member 76 formed in a region of a central portion of the cutter cover 71 facing the guide surface 63a. The guide path 73 in this area is formed as a narrow guide path 77 having a gap of 0.3 mm to 0.9 mm. Here, the gap of 0.3 mm to 0.9 mm in the narrow guide path 77 is a gap having a slightly wider interval than the thickness of a general continuous paper 78 used as a receipt paper. For this reason, as shown in FIG. 13C, when the receipt 79, which is the continuous paper 78 after cutting, remains in the narrow guide path 77, the continuous paper 78 discharged and conveyed following the remaining receipt 79. In the narrow guide path 77, the surface of the remaining receipt 79 and the back surface of the subsequent continuous paper 78 come into contact with each other, so that the remaining receipt 79 is discharged by friction with the subsequent continuous paper 78. Is run.

  Further, the lower downstream guide plate 72 in the lower unit (not shown) is formed slightly higher than the guide surface 63 a formed on the movable blade 63. And the side wall which faces the movable blade 63 of the lower downstream guide plate 72 is formed in the contact surface 72a whose height is slightly higher than the guide surface 63a.

  Here, an operation in which the cutter device 61 cuts the continuous paper 78 will be described. The printed continuous paper 78 passes through the guide path 73 and is guided by the narrow guide path 77 formed between the guide surface 63 a formed on the movable blade 63 and the regulating member 76 formed on the cutter cover 71. It is discharged from a receipt issuing port (not shown). In this state, when an instruction to cut the continuous paper 78 enters the cutter device 61, the movable blade 63 is driven. Then, the movable blade 63 rotates from the state of FIG. 13A to the state of FIG. 13B with the movable blade shaft 64 as a fulcrum, and meshes with the fixed blade 62 at the cutting position CP. As a result, the continuous paper 78 guided at the guide path 73 and positioned at the cutting position CP is cut, and the cut continuous paper 78 is issued from a receipt issuing port (not shown) as a receipt 79 on which transaction details are recorded. The

Japanese Utility Model Publication No. 6-87360 JP 2002-144657 A

  Although the impeller is used in the copy paper transport mechanism by the impeller in the copying machine described as the first prior art, the operation of the impeller is to transport the copy paper by a simple blade. Stay.

  The continuous paper folding stacker described as the second conventional technique uses an impeller, but the impeller only serves to hold the continuous paper that is folded and stacked.

  Further, in the paper forcibly discharging mechanism in the printer described as the conventional third technique, when the continuous paper 78 discharged and conveyed following the remaining receipt 79 in FIG. Since the front surface of the remaining receipt 79 and the back surface of the subsequent continuous paper 78 are in contact with each other inside 77, the function that the remaining receipt 79 is discharged by friction with the subsequent continuous paper 78 is performed.

Accordingly, the present invention, the various disadvantages of the prior art to improve, der which the attempt is made to simplify the operation convenience of the structure of the vane wheel receipt transport and holding mechanism in the printer is, i.e., receipt transport It is intended to simplify the structure by causing the impeller to hold the receipt and to improve the durability of the impeller by reducing the load on the impeller.

  The present invention employs the following means in order to solve the above problems. In addition, the code | symbol attached | subjected to the member site | part of an Example is entered after the structure of this invention.

1. A rotating shaft 3 is installed in the housing 2, and an impeller 4 is fixed to the rotating shaft 3. The impeller 4 has a plurality of elastically deformable blades 4 a around each of the blades 4 a. Each blade is composed of a curved surface portion 4a1 protruding so as to gradually approach the conveyance path 2a formed on the inner surface of the housing 2 from the periphery of the impeller 4 and a flat surface portion 4a2 continuous to the curved surface portion 4a1. 4a, when the impeller 4 is rotated, and progressively approaches the conveyor path 2a, presses the receipt 21 to the transfer passage 2a, it entrains the receipt 21 by a frictional force, when the impeller 4 is stopped, An impeller-type receipt conveyance and holding mechanism in a printer that holds the receipt 21 by being held between the blades 4a and the conveyance path 2a.

2. The impeller-type receipt conveyance and holding mechanism in the printer according to 1 above, wherein the printer 1 is a thermal printer, and the receipt 21 is a thermal receipt having a thermal surface.

3. 6. The impeller-type receipt conveyance and holding mechanism in the printer of 1 or 2, wherein the blades of the impeller are provided in a state where the blades are out of phase by 60 degrees.

4). A control board for controlling the rotation of the impeller 4 and a control board for controlling the operation of the printer 1; the control board for the impeller 4 and the control board for the printer 1 are connected to each other; When the impeller 4 stops rotating, the rear end of the receipt 21 is located upstream of the initial contact point of the impeller 4 with the conveyance path 2a in the direction in which the receipt 21 is conveyed. 4. The impeller-type receipt transport and holding mechanism in the printer according to any one of 1 to 3, wherein the rotation and stop of the impeller 4 are controlled in synchronization with the operation of the printer 1.

5. The receipt guide 6 further includes a receipt guide 6 disposed to face the conveyance path 2a. The receipt guide 6 has a downstream end portion of the receipt guide 6 in a direction in which the receipt is conveyed away from the conveyance path 2a. 5. The impeller-type receipt conveyance and holding mechanism in the printer according to any one of 1 to 4, which is rotatably attached to a shaft fixed to the housing 2 so as to be movable.

6). 6. The impeller-type receipt conveyance and holding mechanism in the printer according to 5, wherein the receipt guide 6 integrally includes a long flat portion 6b and a short inclined portion 6c continuous with the flat portion 6b.

7). 7. The impeller-type receipt conveyance and holding mechanism in the printer according to 5 or 6 above, wherein a notch 6d is provided at the center of the tip of the receipt guide 6.

  As is apparent from the description of the specification, the present invention has the following effects.

  1. Since the receipt can be carried and held by the impeller, the structure is simple, and even if the receipt is undesirably lightly pulled from the outside of the housing or blown by the wind, it is discharged from the housing. To be prevented.

  2. Each blade is composed of a curved surface portion that protrudes from the periphery of the impeller so as to gradually approach the passage of the housing, and a flat surface portion that continues to the curved surface portion. Because of contact with the surface, color development on the heat sensitive surface is suppressed. Next, since the flat portion is in contact with the heat-sensitive surface of the receipt, the load applied to the impeller is reduced, so that the durability of the impeller is improved.

  3. If the receipt is prevented from being discharged from the printer, a slight degree of receipt stacking is possible, and if the stack exceeds a predetermined level, the printer jam detection device can be operated. . Furthermore, no power or sensor is required for rotating and pushing up the receipt guide. Furthermore, since the receipt guide mechanism also serves as the receipt stack mechanism, the number of parts is small.

  4). Since the receipt guide is integrally composed of a long flat surface portion and a short inclined portion continuous therewith, the printer is compactly configured.

  5. If the tip of the receipt does not reach the outlet, there is a notch at the center of the tip of the receipt guide, so you can insert your fingers from this notch and pick the tip of the receipt and pull it out. It is convenient because it can.

  6). The receipt guide is locked to the housing when the finger grip is operated during paper replacement, and the receipt guide is automatically set in the housing when the door abutment is operated when the opposite door is closed. So it is convenient.

  7). Since the tension coil spring is used for biasing the receipt guide, the action is smooth and the attachment to the receipt guide and the housing is simple.

  Three embodiments of the continuous paper conveyance, guide, and holding mechanism in the printer of the present invention will be described. The printer of each embodiment is a thermal printer, and the receipt is a thermal receipt.

  The impeller-type receipt conveyance and holding mechanism in the printer according to the first embodiment of the present invention will be described with reference to FIGS.

  The impeller 4 is driven by a stepping motor (not shown). When the receipt paper is started for receipt printing inside the printer, the impeller 4 also starts to rotate. Thereafter, when printing is finished inside the printer and the receipt paper is cut, the impeller 4 stops rotating after a predetermined time has elapsed after cutting, and holds the cut receipt.

  FIG. 1 is a cross-sectional view of a printer 21 (refer to FIGS. 9 and 10 for the entire configuration) when a receipt 21 cut from continuous paper and conveyed by an impeller 4 is conveyed.

  1 to 4B, a rotary shaft 3 is rotatably supported by a bearing (not shown) installed in a housing 2 of the printer 1, and the rotary shaft 3 has an axial direction. Two impellers 4 are fixed. Each impeller 4 is made of silicone rubber and has three elastically deformable blades 4a around it.

  Each blade 4a is connected to a curved surface portion 4a1 such as a cycloid projecting from the periphery of the impeller 4 so as to gradually approach a conveyance path 2a (see FIG. 4) formed on the inner surface of the housing 2. It is comprised from the plane part 4a2.

  The receipt 21 is conveyed between the conveyance path 2a and the intermediate receipt guide 5 and the receipt guide 6. The receipt guide 6 will be described later.

  When each impeller 4 rotates counterclockwise, first, the curved surface portion 4a1 of each blade 4a contacts the heat-sensitive surface 21a of the receipt 21 while being gently elastically deformed, and then the flat surface portion 4a2 moves the heat-sensitive surface 21a of the receipt 21 to the left. The non-heat-sensitive surface 21b of the receipt 21 is pressed against the transport passage 2a of the housing 2 by pushing in the direction. Then, each flat portion 4a2 entrains the receipt 21 downward by frictional force, so that the receipt 21 is discharged from the discharge port 2b of the housing 2. The vicinity of the discharge port 2b is covered with a cover 11 on the housing side.

  In order to generate the necessary frictional force, the area of the flat portion 4a2 of each blade 4a is configured to be considerably wide.

  2A to 2D are diagrams of the impeller 4, and FIG. 2A is a front view showing a state in which a total of six blades 4 a of the two impellers 4 are out of phase by 60 °. (B) is a side view, (C) is a partially enlarged view of the impeller 4, and (D) is a perspective view of two impellers 4.

  FIG. 3 shows an example of the position of the rear end 21c of the receipt 21 when the impeller 4 stops rotating. If the reference line of the rotating shaft 3 of the impeller 4 is 0 mm, the initial contact point of the impeller 4 with respect to the transport path 2a is 4.9 mm.

  FIG. 4 is a change diagram of the contact surface of the impeller 4, FIG. 4A is the moment of contact of the impeller 4 with the conveyance path 2 a, and FIG. 4B is the conveyance path of the flat portion 4 a 2 of the impeller 4. The contact state to 2a is shown, respectively.

  As shown in FIG. 4, the contact surface of the blade 4a changes with the rotation of the impeller 4. However, since one or more blades 4a are always in contact with the conveyance path 2a, when the impeller 4 stops rotating, By setting the time from cutting the receipt until the impeller stops so that the rear end 21c is above the initial contact point with the impeller 4 to the conveying passage 2a, the receipt can be reliably transferred to the conveying passage 2a of the housing 2. The receipt can be held by holding.

  4B, the vicinity of the upper end of the receipt 21 is sandwiched between the flat portion 4a2 of the blade 4a and the conveyance path 2a of the housing 2, so that the receipt 21 is undesirably lightened from the outside of the housing 2. Even if it is pulled or blown by the wind, it is prevented from being discharged from the housing 2.

  A receipt guide mechanism that also serves as a receipt stacking mechanism in the printer according to the second embodiment of the present invention will be described with reference to FIGS. However, in the second embodiment, description of the same points as in the first embodiment will be omitted, and different points will be described.

  FIG. 5A is a cross-sectional view of the receipt 21 that is cut from continuous paper in the printer 1 and conveyed by the impeller 4 during normal conveyance.

  The receipt 21 is conveyed between the conveyance path 2 a formed on the inner surface of the housing 2, the lower surface 5 a of the intermediate receipt guide 5, and the lower surface 6 a of the receipt guide 6.

  The receipt guide 6 is integrally composed of a long flat surface portion 6b and a short inclined portion 6c continuous thereto. The receipt guide 6 is rotatably attached to a shaft 7 fixed to the housing 2.

  5A, the receipt 21 passes through the lower surface 5a of the intermediate receipt guide 5 and the lower surface 6a of the receipt guide 6 and the conveyance path 2a of the housing 2, and the housing 2 is discharged. It is discharged to the outside from the outlet 2b.

  FIG. 5B is a cross-sectional view at the time of receipt stack resulting from abnormal conveyance.

  When the leading end of the receipt 21 hits an obstacle 12 such as a customer's finger that interferes with the conveyance of the receipt 21, the receipt 21 is irregularly bent in a loop shape a plurality of times from the leading end. As a result, the receipt guide 6 is pushed up and rotated left by the plurality of loop-shaped ridges 21d of the receipt 21 with the shaft 7 as a fulcrum.

  Therefore, the vicinity of the tip of the receipt 21 is stored in a space having a triangular cross section between the lower surface 6a of the receipt guide 6 and the conveyance path 2a of the housing 2. Therefore, it is possible to store a certain amount of receipts without operating the jam (paper jam) detection device immediately upon abnormal conveyance.

  FIG. 6 is a cross-sectional view showing a countermeasure structure when the tip 21e of the receipt 21 does not reach the discharge port 2b. A cutout portion 6 d is provided at the center of the tip of the receipt guide 6. A finger is inserted through the notch 6d, and the tip 21e of the receipt 21 is picked and pulled out. The portion 21f of the receipt 21 that is hidden behind the receipt guide 6 is shaded.

  A suitable torsion spring is attached to the torsion spring mounting portion 7 a of the shaft 7 in accordance with the change in the receipt stack amount or the type of the receipt 21.

  A receipt guide opening / closing mechanism having a self-return function in the printer according to the third embodiment of the present invention will be described with reference to FIGS.

  FIG. 7A shows that the receipt guide 16 is locked when the operator's finger pulls the finger holding portion 16d provided at one end of the receipt guide 16 in the left direction when the paper is replaced in the printer 1. It is a front view of a state.

  A shaft 17 is fixed to the housing 2 of the printer 1, and a receipt guide 16 is rotatably attached to the shaft 17. A tension coil spring 18 is stretched between a hook 2 c provided at the lower portion of the housing 2 and a hook 16 e provided at the other end of the receipt guide 16.

  7A, the tension coil spring 18 is pulling the receipt guide 16 in the direction of the arrow. Therefore, the receipt guide 16 is given a moment in the direction of the arrow (left rotation) about the shaft 17, and the first stopper 16 f provided at the intermediate portion of the receipt guide 16 is provided at the upper portion of the housing 2. The receipt guide 16 is locked to the housing 2 in contact with the first stopper 2d. In this state, the operator can replace the paper.

  FIG. 7B is a front view of a state in which the receipt guide 16 is automatically locked by closing the door 13 on the housing side (see FIG. 8).

  7A, when the operator closes the door 13 in the direction of the arrow, the right side of the door 13 comes into contact with a door contact portion 16g provided at one end of the receipt guide 16. A moment in the direction of the arrow (right rotation) is given about the axis 17, and the right rotation is performed from the position of the two-dot chain line on the left side shown in FIG. At this time, tension acts on the tension coil spring 18, and the center line of the tension coil spring 18 (that is, the hook 2c provided at the lower portion of the housing 2 and the hook 16e provided at the other end of the receipt guide 16). ) Moves from one side of the shaft 17 to the other side, so that the receipt guide 16 stands up to the position shown in FIG. At this position, the second stopper 16h provided near one end of the receipt guide 16 contacts the second stopper 2e provided at the top of the housing 2, and the receipt guide 16 is positioned at a predetermined position of the housing 2. Set automatically.

  FIG. 9 is a cross-sectional view showing the overall configuration of the printer 1 in which the first and second embodiments of the present invention are installed, and shows a state at the moment when the receipt 21 after printing is discharged. The printer 1 is controlled by various devices mounted on the control board 8 of the printer, and the impeller 4 is controlled by various devices mounted on the control board 9 of the impeller mechanism. Since the control board 8 of the printer 1 and the control board 9 of the impeller mechanism are connected, the rotation and stop of the impeller 4 can be controlled in synchronization with the operation of the printer 1.

  FIG. 10 is a cross-sectional view showing the overall configuration of the printer 1 and shows a state after the printed receipt 21 is guided by the receipt guide 6.

It is sectional drawing of the impeller-type receipt conveyance and holding mechanism in the printer of Example 1 of this invention. It is various drawings of the impeller of the same mechanism, (A) is a front view, and the state where a total of six blades of two impellers are out of phase by 60 °, (B) is a side view, (C) Is a partially enlarged view of the impeller, and (D) is a perspective view of two impellers. It is sectional drawing which shows an example of the position of the rear end of a receipt when the impeller stops rotating. It is a change figure of the contact surface of the impeller, (A) shows the moment of contact with the conveyance path of the impeller, and (B) shows the contact state with the conveyance path of the flat part of the impeller. FIG. 5 is a cross-sectional view of a receipt guide mechanism that also serves as a receipt stack mechanism in a printer according to a second embodiment of the present invention, where (A) is a state during normal conveyance of the receipt in the mechanism, and (B) is a receipt stack resulting from abnormal conveyance. Each state is shown. It is sectional drawing which shows the countermeasure structure when the front-end | tip of the receipt of the mechanism does not reach the discharge port. FIG. 9 is a front view of a receipt guide opening / closing mechanism having a self-return function in a printer according to a third embodiment of the present invention, where (A) shows a locked state when the receipt is replaced in the mechanism, and (B) shows a set state of a receipt guide. , Respectively. In the same mechanism, it is sectional drawing which shows the movement condition of the receipt guide at the time of closing the door by the side of a housing | casing. It is sectional drawing which shows the whole structure of the printer in which Example 1, 2 of this invention is installed, and shows the state of the moment when the receipt after printing is discharged. It is sectional drawing which shows the whole structure of the printer in which Example 1, 2 of this invention is installed, and shows the state after the receipt after printing was guided by the receipt guide. It is an impeller used for conveyance of the copy paper of the conventional 1st technique, (A) shows a front view, (B) shows a side view, respectively. It is a front view of the conventional continuous sheet folding stacker of the second technology, (A) is an overall view, (B) shows the interlocking mechanism of the impeller and the swing plate. The operation process of the forced paper discharge mechanism in the printer of the third conventional technique is sequentially shown in (A) to (C).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Printer 2 Housing 2a Conveyance path 2b Discharge port 2c Hook (2nd spring fixing part)
2d 1st stopper 2e 2nd stopper 3 Rotating shaft 4 Impeller 4a Blade 4a1 Curved surface portion 4a2 Flat surface portion 5 Intermediate receipt guide 5a Lower surface 6 Receipt guide 6a Lower surface 6b Long flat surface portion 6c Short inclined portion 6d Notch portion 7 Shaft 7a Torsion spring Mounting portion 8 Control board of printer 9 Control board of impeller mechanism 11 Cover on housing side 12 Obstacle 13 Door on housing side 16 Receipt guide 16d Hand hook 16e Hook (first spring fixing portion)
16f First stopper 16g Door contact portion 16h Second stopper 17 Axis 18 Tension coil spring 21 Receipt 21a Thermal surface 21b Non-thermal surface 21c Rear end of receipt 21d Loop-shaped peak 21e Receptacle tip 21f Hidden in receipt guide The part of the receipt that cannot be seen

Claims (7)

A rotating shaft is installed in the housing,
An impeller is fixed to the rotating shaft,
The impeller has a plurality of elastically deformable blades around it,
Each of the blades is composed of a curved surface portion protruding so as to gradually approach a conveyance path formed on the inner surface of the housing from the periphery of the impeller, and a flat surface portion continuous to the curved surface portion,
Wherein each blade, when the impeller is rotated, gradually close to the conveyance passage, to press the receipt to the conveying path, entrains the receipt by frictional force,
An impeller-type receipt conveyance and holding mechanism in a printer, wherein when the impeller stops, the receipt is sandwiched and held by the vane and the conveyance passage.   The printer is a thermal printer;
  The impeller-type receipt conveyance and holding mechanism in a printer according to claim 1, wherein the receipt is a thermal receipt having a heat sensitive surface.   The impeller-type receipt conveyance and holding mechanism in the printer according to claim 1 or 2, wherein six blades of the impeller are provided in a state of being shifted in phase by 60 °.   A control board for controlling the rotation of the impeller, and a control board for controlling the operation of the printer;
  The control board for the impeller and the control board for the printer are connected to each other, and when the impeller stops rotating, the rear end of the receipt is more than the initial contact point with the conveyance path of the impeller. 4. The rotation and stop of the impeller are controlled in synchronization with the operation of the printer so as to be on the upstream side in a direction in which the receipt is conveyed. 5. An impeller-type receipt conveyance and holding mechanism in the printer described above.   A receipt guide disposed opposite to the conveyance path;
  The receipt guide is rotatably attached to a shaft fixed to the housing such that a downstream end portion of the receipt guide in a direction in which the receipt is conveyed is movable in a direction away from the conveyance path. The impeller-type receipt conveyance and holding mechanism in the printer according to any one of claims 1 to 4. 6. The impeller-type receipt conveyance and holding mechanism in a printer according to claim 5, wherein the receipt guide integrally includes a long flat portion and a short inclined portion continuous with the flat portion . The impeller-type receipt conveyance and holding mechanism in a printer according to claim 5 or 6, wherein a notch portion is provided at a central portion of a tip of the receipt guide .

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