JPH0743644U - Printer - Google Patents

Abstract

(57) [Summary] [Purpose] It is intended to provide a printer which has good paper passing property, good installation stability, small installation space, and good paper loading workability. [Structure] The page feeder 10 is rotatably attached to the printer body 29 by engaging a platen shaft 34 in the printer body 29. Then, the rear cover (cover member) 31 of the platen 29 is opened, the page feeder 10 is raised about the platen shaft 34, and the paper bail shaft (second stopper) 38 is abutted to the standing position. 41 is loaded and wound around the platen 33, and the paper 41 is set. After the paper is set, the page feeder 10 is tilted down, the stopper hook 25 is applied to the feeder set pin (first stopper) 37 to the down position, the rear cover 31 is closed, and the tractor 21 and the platen 33 are driven to transport the paper 41. While doing that record.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a printer in which a page feeder is attached to a printer body, and paper is conveyed by the page feeder while recording is performed.

[0002]

[Prior art]

 Conventionally, in this kind of printer, a page feeder is engaged with a platen shaft to be rotatably attached to a printer main body, paper is loaded into the tractor of the page feeder, and the tractor and the platen are wound around the platen. There is one that drives a paper to convey a sheet and perform recording on the paper.

For example, as shown in FIG. 8, in a page feeder, a tractor 2 is attached to a feeder frame 1 with an inclination, upper and lower lids 3 and 4 are provided on both sides of the tractor 2, and an upper side of the feeder frame 1 is provided. The paper separator 5 and the paper tensioner 6 are supported on the lower side, and the whole is mounted outside the printer body 7 on the upper side thereof.

[0004]

[Problems to be solved by the device]

 Therefore, there were the following problems. Since the tractor 2 is located diagonally above the platen 8 in the printer body 7, the paper 9 bends when entering the tractor 2 and when exiting, and its paper-passing property is poor.

Since the page feeder is fixed on the printer body 7 at a predetermined angle θ, the overall height becomes high and the stability is poor, and the installation space is large.

To set the paper 9, the upper and lower lids 3 and 4 are opened, the perforations of the paper 9 are adjusted to the pins of the tractor 2, and the paper 9 is sandwiched by the upper and lower lids 3 and 4, Since the lower lid 4 is located slightly downward on the rear side of the printer body 7 and is invisible to the operator, the workability when picking the paper 9 with the lid 4 was poor.

Therefore, an object of the present invention is to solve the above-mentioned problems of the related art, to provide a good paper-passing property, a good installation stability, a small installation space, and a paper loading workability. To provide.

[0008]

[Means for Solving the Problems]

 Therefore, in the present invention, the page feeder 10 is engaged with the platen shaft 34 so as to be rotatably externally attached to the printer body 29, and is attached to the tractor 21 of the page feeder 10 as shown in the following illustrated embodiments. In a printer in which a sheet of paper 41 is loaded and wound around a platen 33, and the tractor 21 and the platen 33 are driven to record the sheet of paper 41 while the sheet of paper 41 is being conveyed, the page feeder 10 is installed in the printer main body 29. A first stopper, such as a feeder set pin 37, which stops in a lying position that fits in a substantially horizontal state, and a paper bail shaft that rotates from the lying position to stop the page feeder 10 in an upright position. A second stopper such as 38 and the page feeder 10 are stored in the printer body 29 by closing when in the down position. And, exposing the pages feeder 10 outside the printer body 29 is opened when the said upright position, characterized in that it comprises a cover member such as the rear cover 31, to the printer main body 29, respectively.

[0009]

[Action]

 Then, the cover member is opened, the page feeder 10 is engaged with the platen shaft 34, and is rotatably attached to the printer body 29. Then, with the cover member open, the page feeder 10 is rotated and brought into contact with the second stopper so that the page feeder 10 is exposed to the outside of the printer body 29 as the standing position, and the tractor 21 is loaded with the paper 41. Wrap around Platen 33. Then, the page feeder 10 is placed on the first stopper in a lying position and placed in a substantially horizontal state in the printer body 29, the cover member is closed, and the tractor 21 and the platen 33 are driven to convey the paper 41. Make a record of it.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are simplified side views showing the upright state and the downside state of the page feeder, FIG. 3 is a perspective view of the entire page feeder, and FIGS. 4 to 7 are partial views thereof.

As shown in FIG. 3, a feeder frame 11 of the page feeder 10 is configured by connecting left and right side plates 12 with stays 13, and two paper guide rods 14 are provided between the side plates 12. Further, the feeder frame 11 has a drive shaft 15 rotatably supported between its side plates 12 and a paper tensioner 16 horizontally rotatably mounted thereon. On the outer side of the one side plate 12, a transmission mechanism for transmitting rotation to the drive shaft 15, that is, a drive pulley 17, a gear pulley 19 linked to this via a drive belt 18, and an idle gear meshed with this gear pulley 19. 20 is attached.

The left and right tractors 21 are slidably mounted on the stay 13 and the drive shaft 15. Upper and lower lids 22 and 23 are mounted on both sides of each tractor 21 in a known manner.

C-shaped bearing recesses 24 are formed at the front ends of the left and right side plates 12, respectively, and inverted U-shaped stopper hooks 25 are provided at the middle portions of the lower edges. As shown in FIG. 4, pins 26 project from the inner surfaces of the left and right side plates 12, and a platen hook 27 is rotatably attached to the pins 26. The platen hook 27 is urged to rotate upward by a spring 28, and the hook portion 27a at the free end of the platen hook 27 extends to the inside of the region of the support recess 24.

On the other hand, as shown in FIG. 1, a front cover 30 and a rear cover 31 are pivotally attached to the printer body 29, and the upper surface of the empty chamber 32 in the printer body 29 is opened and closed by these covers 30 and 31.

A platen 33 is horizontally mounted at an intermediate position in the printer body 29. As shown in FIG. 5, the bearing 35 of the platen shaft 34 is formed with a feeder set groove 36 into which the front end of the side plate 12 of the page feeder 10 can be inserted.

On both inner right and left sides of the printer body 29, feeder set pins 37 are provided so as to project at a position rearward of the platen 33. A paper bail shaft 38 is movably supported between the left and right inner side surfaces of the printer body 29 by a paper bail lever 39 that rotates by a predetermined angle.

To mount the page feeder 10 on the printer body 29, both covers 30 and 31 are opened, the front end portions of the left and right side plates 12 are inserted into the feeder set grooves 36 of the left and right bearings 35 of the platen shaft 34, and the supporting recesses are formed. 24 is fitted in the feeder set groove 36 of the bearing 35. By this fitting, the hook portion 27a of the platen hook 27 engages with the platen shaft 34 and prevents the side plate 12 from being unintentionally detached. At this time, as shown in FIG. 6, the idle gear 20 meshes with the platen gear 40, and the rotation of the platen 33 is transmitted to the tractor 21. In this state, the feeder frame 11 is rotatably supported by the platen shaft 34.

In this manner, the feeder frame 11 is supported, and the paper bail shaft 38 is rotated away from the platen 33 to the limit position as shown in FIG. When the feeder frame 11 is rotated forward until it comes into contact with the bail shaft 38, the paper bail shaft 38 serves as a stopper to prevent the feeder frame 11 from rotating further forward. At this stop position, the feeder frame 11 stands up with a slight forward inclination as shown in FIG. 1, and the tractor 21 and both lids 22 and 23 are exposed to the outside of the printer main body 29 with the same stand up. The paper 41 is loaded in this state.

On the other hand, when the feeder frame 11 is rotated rearward until the stopper hook 25 thereof fits into the feeder set pin 37 of the printer body 29, the feeder frame 11 uses the feeder set pin 37 as a stopper. Further backward rotation is restricted. At this stop position, the feeder frame 11 is laid down in a substantially horizontal state as shown in FIG. 2, and the entire paper feeder 10 is stored in the printer body 29 by closing both covers 30 and 31. Since the tractor 21 is substantially horizontal at a position slightly higher than the platen 33, the paper 41 passing between these is transported straight without bending before and after the tractor 21.

A paper separator 42 is rotatably attached to the base end (rear end) of the rear cover 31 as shown in FIGS. 1 and 2.

[0022]

[Effect of device]

 According to this invention, there are the following effects.

1) Since the paper is transferred with the page feeder lying down on the platen axis, the height of the tractor is about the same as the platen, so the paper does not bend. Good tractor passage.

2) Since the entire page feeder can be stored in the printer body, the installation space is reduced and the stability is improved.

3) Since the tractor and the upper and lower lids can be exposed to the outside of the printer main body to stand up, the workability of paper loading is also good.

[Brief description of drawings]

FIG. 1 is a schematic side view of a printer according to an embodiment of the present invention, in which a page feeder is in a standing state.

FIG. 2 is a simplified side view in a lying state.

FIG. 3 is an overall perspective view of the page feeder.

FIG. 4 is a front view of a supporting portion of the page feeder on a platen shaft.

FIG. 5 is a perspective view showing a part of the platen and its supporting portion and its vicinity.

FIG. 6 is an enlarged side view of a portion that transmits rotation to the tractor.

FIG. 7 is an enlarged side view of a portion that restrains the standing state.

FIG. 8 is a simplified side view of a conventional printer.

[Explanation of symbols]

 10 page feeder 21 tractor 29 printer body 31 rear cover (cover member) 33 platen 34 platen shaft 37 feeder set pin (first stopper) 38 paper bail shaft (second stopper) 41 paper

Claims (1)

[Scope of utility model registration request] 1. An externally attached page feeder is rotatably attached to a printer main body by engaging a platen shaft, paper is loaded on a tractor of the page feeder and is wound around the platen, and the tractor and the platen are driven. In a printer that conveys paper and records it on the page feeder, a first stopper that stops the page feeder in a lying position in which the printer is housed in a substantially horizontal state, and the page feeder is rotated from the lying position. A second stopper for stopping the feeder at the upright position, and the page feeder stored inside the printer body when closed at the down position to open the page feeder outside the printer body at the upright position. And a cover member exposed to the printer body, respectively.
Printer.