JPH04135532U - printer - Google Patents

Abstract

(57) [Summary] [Purpose] In a printer that is equipped with a paper feed cassette that stores recording paper and is used for automatic paper feeding to the printing mechanism, and that performs manual paper feeding from the paper output side. ,
To prevent recording paper from getting caught on the front end of the recording paper in a paper feed cassette during manual paper feeding. [Configuration] A relay lever 5 is provided, and the lid 6 is closed during manual paper feeding.
When opening, the projection 6a pushes up one end of the lever 5, and the other end of the lever 5 pushes down the abutment pin 4c of the hopper plate 4a, thereby lowering the recording paper 8. As the lowering driving means for lowering the recording paper 8 in the paper feed cassette, various other mechanisms can be considered, such as a mechanism for lowering the hopper plate using an electromagnetic device, a mechanism for lowering the paper feed cassette 4 itself, etc.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea was developed for a paper feeder that accommodates recording paper and is used to automatically feed paper to the printing mechanism. Regarding printers that have a paper cassette installed and allow manual paper feeding from the paper output side. Ru.

0002

[Conventional technology]

The printer has a paper cassette installed, and the recording paper is picked from this paper cassette. The king roller allows the paper to be taken out and automatically fed into the printing mechanism. There are things to do. In addition, there is a dedicated paper feed slot for manual feed, so you can manually feed paper as needed. Some things are already possible.

0003 By the way, if you install a manual paper feed slot, you will also need a dedicated guide member. This hinders the miniaturization of printers. Therefore, the applicant installed a paper feed slot exclusively for manual paper feeding. We proposed a picking mechanism that enables manual paper feeding without having to No. 267848). According to this mechanism, the picking roller is connected to the paper cassette. It can be raised and lowered, creating a space between it and the recording paper in the paper cassette at the raised position. allows manual paper feeding from the paper output side, and the paper output slot can also be used as a manual paper feed slot. It is something that can be done.

0004

[Problem that the idea aims to solve]

However, by simply making the picking roller move up and down relative to the paper feed cassette, In this case, the recording paper may get caught on the front edge of the recording paper in the paper cassette when feeding paper manually. However, there was a problem that paper could not be fed properly.

[0005] Therefore, the purpose of this invention is to prevent the recording paper from being pulled against the recording paper in the paper cassette during manual paper feeding. The object of the present invention is to provide a printer that can be prevented from getting stuck.

[0006]

[Means to solve the problem]

In order to achieve the above object, the printer of the present invention accommodates recording paper and has a printing mechanism. The paper feed cassette used for automatic paper feeding into the The uppermost recording paper in the paper cassette is brought into contact with the paper cassette in the lowered position. Remove the recording paper from the set and move it to the raised position to place the highest record in the paper cassette. Picking that creates a space between the paper and the recording paper to allow manual paper feeding from the paper output side The roller lowers the recording paper in the paper cassette when manually feeding paper from the paper output side. and lowering drive means.

[0007] The lowering drive means is provided in the paper feed cassette and drives a hopper plate on which the recording paper is placed. It may have a lever for lowering the seat.

[0008] The lowering drive means is provided in the paper feed cassette and drives a hopper plate on which the recording paper is placed. It may also have an electromagnetic device for lowering the seat.

[0009] The lowering drive means includes a support means that supports the paper feed cassette so that it can rise and fall, and a paper feed cassette. and a lever for lowering the lever.

0010

[Effect]

When manually feeding paper from the paper output side, the lowering drive means records in the paper cassette. Since the paper is lowered, the recording paper does not get caught on the recording paper in the paper feed cassette.

[0011] The recording paper in the paper cassette can be stored, for example, on the hopper plate or on the paper cassette itself. It can be lowered by lowering it.

0012

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. ◆ First, a first embodiment will be explained.

[0013] In FIG. 1, a printer case 2 of a printer 1 has a flat box shape. P A recess 2b is formed on the lower rear side of the printer case 2, partitioned by a partition plate 2a. It has been done. A paper feed cassette 4 is removably attached to the recess 2b. That is, By fitting the predetermined guide rail and guide groove (not shown), the printer The paper feed cassette 4 is inserted and removed from the rear of the paper feed cassette 1. In addition, in the front part of the recessed part 2b The bottom plate of the printer case 2 is raised upwards, and the paper feeder is inserted into this raised part 2c. The installation of paper cassette 4 will be completed when the front part of set 4 hits. It has become. A control circuit board, a power supply unit, etc. (not shown) are arranged on the partition plate 2a. be done.

[0014] The paper feed cassette 4 has a box shape with an open top. And in front of paper cassette 4 A hopper plate 4a is provided on the side, and on top of this hopper plate 4a, Recording paper 8 is placed. The hopper plate 4a is operated by a predetermined means (not shown). Forced upward.

[0015] The front of the printer case 2 is open, and the manual paper feed lid 6 is installed in this part. It is provided by having its lower end rotatably supported by the case 2. The lid 6 has an inner There is a handle and guide on the surface, which can be used as a recording paper insertion guide during manual paper feeding. Become. The lid 6 also has a paper ejection slot 7 (see Figure 2) that is used for automatic paper feeding. be. Switching between automatic paper feeding mode and manual paper feeding mode is possible by opening and closing the lid 6. This is automatically performed by being detected by a close switch (not shown). Lid 6 The closed and open states of the printer are controlled by a click mechanism installed between the lid 6 and the printer case 2. It is held by a structure (not shown).

[0016] Next, on the bottom plate of the printer case 2, there is a A relay lever 5 is rotatably supported. The relay lever 5 is moved forward around the shaft support. The angle between the front and rear sides is 180° on the upper side. It is getting smaller. A plurality of relay levers 5 are provided, and these are arranged in the width direction of the printer 1. They are arranged side by side. Next, the rear side of the relay lever 5 is placed under the hopper plate 4a. It abuts from above on an abutment pin 4c fixed to the front side. In addition, the startup part 2c and the front plate of the paper feed cassette 4 have a vertical hole 2 through which the rear side of the relay lever 5 passes. d and 4b are opened. Next, the front side of the relay lever 5 is attached to the lower end of the lid 6. A protrusion 6a is provided to protrude inward of the printer 1 at right angles to the surface of the lid 6. It is designed to come into contact with the top from the top. Therefore, when the lid 6 is opened, the protrusion 6a It touches the front end of the lever 5 and pushes it up, which lowers the rear end of the lever 5. , the hopper plate 4a engaged with this is pushed down. . Therefore, this mechanism prevents the recording paper 8 in the paper feed cassette when manually feeding paper from the paper output side. It serves as a lowering drive means for lowering.

[0017] Next, a picking roller 11 is provided at the upper front part of the paper feed cassette. ◆ The picking roller 11 is rotated by the rotational force of a line feed motor (not shown). and can be raised and lowered relative to the paper feed cassette 4 via a picking mechanism (not shown). It has become. When the picking roller 11 is in the lowered position, it Take out the recording paper 8 by touching it, and place it in the uppermost position in the paper cassette. A space is created between the recording paper 8 and the paper to allow manual paper feeding from the paper output side. It has become. The picking mechanism picks only for a predetermined period when the line feed motor rotates forward. The roller 11 is placed in the lowered position and the pitch is constantly set when the line feed motor rotates in reverse. It is designed to hold the king roller in the raised position. Picking like this The mechanism is shown in Japanese Patent Application No. 2-267848 already filed by the applicant. There are structures that

[0018] Next, a frame 13 is provided at the front position of the paper feed cassette 4, and a platen 14 is provided. is fixed to the frame 13 with the surface in contact with the recording paper 8 facing upward.

[0019] Next, the paper feed roller 17 and paper ejection roller 18 are respectively moved above the platen 14. It is provided by being attached to the frame 13 at the upstream and downstream positions. ◆ These constitute conveyance rollers. Both of these are the lower drive roller and the upper The drive roller is driven by the above-mentioned line feed motor. , and rotates via a gear train (not shown). Also, paper ejection roller 1 A knob (not shown) is provided on the outside of the printer case 2 to manually rotate the printer case 8. There is.

[0020] Next, the print head 19 is placed above the platen 14 with the first guide shaft 21 and the second guide shaft 21 . It is provided so as to be movable in parallel to the platen 14 via a guide shaft 22 . Print head 19, the driving force of the carriage motor is transmitted through the pulley and timing belt. As a result of being transmitted (not shown), it moves along the platen 14.

[0021] Next, the operation of the first embodiment will be explained. ◆ When automatically feeding paper, the lid 6 is closed. Then turn on the start switch. ◆ Then, the line feed motor rotates forward, the picking roller 11 descends, and the paper feed cassette is removed. The recording paper 8 comes into contact with the uppermost recording paper 8 in the cut, and the recording paper 8 is sent out. And recording paper 8 When the leading end is pinched by the paper feed roller 17, the picking roller 11 rises. After that, the recording paper 8 is conveyed by the paper feed roller 17, and the recording paper 8 is moved to the platen. The print head passes between the print head 14 and the print head 19, and predetermined printing is performed by the print head. . When the leading edge of the recording paper 8 reaches the paper ejection roller 18, the paper feed roller 17 and The recording paper is conveyed by a paper discharge roller 18 and discharged from a paper discharge port 7.

[0022] Next, a case in which manual paper feeding is performed will be explained using FIG. 2. ◆ Fold the lid 6 forward. Then, the protrusion 6a on the lid pushes up the front side of the lever 5, The lever 5 rotates counterclockwise, and the rear side of the lever 5 pushes down the contact pin 4c. , the hopper plate 4a is pushed down, thereby the recording paper 8 is lowered, and the manual feed It is evacuated outside the insertion locus of the recording paper 10.

[0023] Then, insert the recording paper 10 for manual feeding into the printer along the guide of the lid 6, Rotate the knob with its tip in contact with the contact surface of the upper and lower rollers of the paper ejection roller 18. , After feeding the tip to the specified position where it can be fed, turn on the start switch. Ru.

[0024] Then, the line feed motor rotates in the reverse direction, and the picking roller 11 is maintained in the raised position. The paper discharge roller 18 and the paper feed roller 17 are rotated in the opposite direction while the recording paper 10 is is the top recording paper 8 in the paper feed cassette 4 in the printer and the picking roller 1. It is sent into the space between 1 and 1. At this time, the recording paper 8 in the paper cassette Since it is descending, the recording paper 10 will not get caught on the leading edge of the recording paper 8, causing any trouble. Instead, it is sent into the above space. Then, the end of the manual feed recording paper 10 will feed the paper. When it reaches a predetermined position that does not pass roller 17, the line feed motor rotates forward and moves each roller. -17 and 18 are rotated forward, and while conveying the recording paper 10 in the same way as during automatic paper feeding, A record of printing performed by the print head 19 based on the print data. The paper 10 is discharged along the top surface of the lid 6.

[0025] In this embodiment, the hopper plate 4a is moved up and down in conjunction with the opening and closing of the lid 6. , without bringing the front side of the lever 4 into contact with the protrusion 6a, the lever 4 extends and protrudes toward the front of the printer 1. The hopper plate may be moved up and down by independently operating this lever.

[0026] Next, a second embodiment will be described based on FIG. 3. ◆ The same reference numerals as in the first embodiment indicate the same components as in the first embodiment.

[0027] The paper feed cassette 4 has an electromagnet installed below the hopper plate 4a. A station 26 is provided. The electromagnet device 26 is switched to manual feed mode when the lid 6 is opened. When the change is made, the hopper plate 4a made of a steel plate is activated by the biasing force of the predetermined means. This causes the recording paper 8 to descend, producing the same effect as in the first embodiment. It is starting to bear fruit. Note that when using automatic paper feeding, the holder is The upper plate 4a is moved away from the electromagnet 26 by the urging force of a predetermined means, and the picking The recording paper 8 sent out by the roller 11 is printed by the print head 19, The paper is discharged from the paper discharge port 7.

[0028] Next, a third embodiment will be described based on FIG. 4. ◆ The same reference numerals as in the first embodiment indicate the same components as in the first embodiment.

[0029] A paper feed cassette 4 is supported so as to be movable up and down. That is, the pair of rotating shafts 4d It is fixed to the rear of both outer surfaces of set 4. Also, the bearing 2f is connected to the printer case. It is provided at the rear of both inner surfaces of 2. Bearing 2f is a snap fit type. , by pushing the rotating shaft 4d into the bearing 2f from the rear, so that both fit together. It has become.

[0030] Next, the lever 27 is attached to the bottom plate of the printer case 2 between the upright portion 2c and the front end. It is rotatably supported in a central position. A plurality of levers 27 are provided, and these levers are They are arranged in parallel in the width direction of the printer 1. The lever 27 extends forward and around the shaft support. Extends backwards. The rear side of the lever 27 is attached to the front of both outer surfaces of the paper feed cassette 4. The fixed support pin 4f is supported. Next, the front side of the lever 27 is connected to the lower end of the lid 6. It is held down by a lever holding part 6b provided in the section. ◆ Also, the lower end position of both sides of the printer case 2 is from the lower end surface of the paper feed cassette 4. It has fallen by a predetermined amount.

[0031] With this structure, during automatic paper feeding, the lid 6 is closed and the lever holding part 6b is closed. Press the front side of the lever 27 so that the rear side of the lever 27 touches the front side of the paper feed cassette 4. In this state, the paper is fed by the picking roller 11. ◆ Next, when manually feeding paper, opening the lid 6 releases the lever 27 and allows the paper to be fed manually. The front part of the paper cassette 4 descends to the lower end position of the case 2 due to its own weight. This is it The recording paper 8 also descends and is retracted out of the manual paper feed path.

[0032] In this embodiment, only the front part of the paper feed cassette 4 is lowered, but the predetermined means Accordingly, the entire paper feed cassette 4 may be lowered.

[0033]

[Effect of the idea]

The present invention is equipped with a lowering drive means for lowering the recording paper in the paper feed cassette. This prevents the recording paper from getting caught when manually feeding paper, allowing you to feed paper manually without any problems. It becomes possible.

[0034] In addition, it is possible to manually feed paper while the paper cassette is installed in the printer. , remove the paper cassette from the printer and use that space as a storage space for manual feed recording paper. This eliminates the need for users to manually feed paper.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a printer of a first embodiment.

FIG. 2 is a partial view of FIG. 1 showing manual paper feeding.

FIG. 3 is a partial cross-sectional view of a printer according to a second embodiment.

FIG. 4 is a sectional view of a printer according to a third embodiment.

[Explanation of symbols]

1 printer 4 Paper cassette 4a Hopper plate 5 Lowering drive means (lever) 8 Recording paper in the paper cassette 11 Picking roller 26 Lowering drive means (electromagnetic device) 27 Lowering drive means (lever)

──────────────────────────────────────────────── ─── Continuation of front page (72) Creator Hiroyuki Kojima 934-13 Kawata, Yotsukaido City, Chiba Prefecture Co., Ltd. Sha Seikosha Chiba Office (72) Creator Takashi Kogo 934-13 Kawata, Yotsukaido City, Chiba Prefecture Co., Ltd. Sha Seikosha Chiba Office

Claims (4)

[Scope of utility model registration request] Claim 1: A paper feed cassette that accommodates recording paper and is used for automatic paper feeding to a printing mechanism; and a paper feed cassette that is movable up and down with respect to the paper feed cassette, and in a lowered position, a The paper is brought into contact with the topmost recording paper and taken out from the paper feed cassette, and at the raised position, a space is created between the paper and the topmost recording paper in the paper feed cassette to manually feed the paper from the paper ejection side. A printer comprising: a picking roller that accepts paper; and a lowering drive means that lowers the recording paper in the paper feed cassette when manually feeding paper from the paper ejection side. 2. The printer according to claim 1, wherein the lowering drive means includes a lever provided in the paper feed cassette and lowering a hopper plate on which recording paper is placed. 3. A printer according to claim 1, wherein the lowering drive means includes an electromagnetic device for lowering a hopper plate provided in the paper feed cassette and on which recording paper is placed. 4. The printer according to claim 1, wherein the lowering drive means includes support means for supporting the paper feed cassette in a vertically movable manner, and a lever for lowering the paper feed cassette. .