JPH0471873A - Paper feeding device of recording apparatus - Google Patents

Abstract

PURPOSE:To selectively and smoothly feed two kinds of cut papers different in size by one stage to a printing part by retracting the 1/2 cut papers cut in a paper feed route to a retraction position. CONSTITUTION:A cutting means cuts cut paper by half in a paper feed route 33. For example, the cutting means is formed from the cutter 41 provided to the paper feed route 33 on the upstream side of a printing part 2. further, a retracting means 51 retracts the 1/2 cut papers cut by the cutting means (cutter 41) to a retraction position P1. Concretely, the retracting means 51 is formed from a retraction route 52, a feed route change-over pawl 53 and feed rollers 64. The feed rollers 64 are formed so as to be capable of being forwardly and reversely rotated in a paper holding state.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding device applied to recording devices such as copying machines and printers.

[Prior Art] Conventionally, in order to cope with the diversification of paper sizes, recording devices that can selectively print on two types of cut paper of different sizes have been put into practical use.

A schematic configuration of such a recording apparatus is shown in FIG.

In the figure, 1 is the main body of the device. Inside the device body 1,
A printing section 2 (print head 3, platen 4), a paper feeding device, etc. are provided.

Here, the paper feeding device is configured to be able to selectively feed two types of cut paper of different sizes to the printing unit 2. Specifically, the paper feeding device has the first. The second cassette 11.21 and the first cassette 11.21 for feeding the cut sheets in each cassette 11.21 to the printing section 2. It has second paper feeding means 12.22.

Usually, the first. The second cassette 11.21 stores cut sheets of different sizes (for example, A4 and A5 cut sheets, B4 and 85 cut sheets).

On the other hand, the first paper feeding means 12 includes a paper feeding roller 14 and transport rollers 15, 16, 17, 18, etc. disposed along the first paper transport path 13. Further, the second paper feeding means 22 includes a paper feeding roller 24 and a transport roller 2 disposed along the second paper transport path 23.
5, 26, 16, 17, 18, etc.

Therefore, when a cut sheet (for example, an A4 cut sheet) in the first cassette 11 is selected, the A4 cut sheet is transferred to the paper feed roller 14 and the transport roller 15, 16.
．． 6 fed to the printing unit 2 along the paper conveyance path 13 by 17, 18, etc. Also, if cut paper (for example, A5 cut paper) in the second cassette 21 is selected,
The A5 cut paper is transferred to the second paper transport path F! It is fed to the printing section 2 via @23.

[Problems to be Solved by the Invention] Incidentally, the above-mentioned recording apparatus is required to be smaller and lower in cost in order to expand the field of use. Therefore, there is a strong demand for paper feeding devices used in recording devices to be smaller and lower in cost.

However, in the paper feeding device described above, cassettes (11, 21
), which makes it difficult to achieve miniaturization and cost reduction.

In view of the above circumstances, it is an object of the present invention to provide a paper feeding device that is capable of selectively and smoothly feeding two types of cut paper that differ in size by one level to a printing unit while achieving miniaturization and cost reduction. There is a particular thing.

Means for Solving Problem 11] The invention as set forth in claim 1 provides a paper feeding device of a recording apparatus configured to feed cut paper in a cassette to a printing unit via a paper conveyance path, comprising the steps of: The present invention is characterized in that the number of cutting means for cutting the paper into 1/2 in the paper conveyance path, and evacuation means for evacuation of the cut 172-cut paper to the evacuation position are reduced.

Further, the invention according to claim 2 provides a paper feeding device of a recording device configured to feed cut paper in a cassette to a printing unit via a paper conveyance path, comprising: a paper cut selection switch; and the cut paper. a cutting means for cutting the paper into 1/2 in the paper transport path; a retracting means for retracting the cut 1/2 cut paper to a retraction position; A reverse feeding means that feeds the paper backward to the conveying path side, and when the paper cut selection switch is operated, the cutting means is operated and one of the 1/2 cut sheets cut by the cutting means is operated. a control means for operating the retracting means so as to retract one of the sheets to the retracting position, and operating the reverse feeding means when a 1/2 cut sheet is present at the retracting position. Features.

[Function] In the invention described in claim 1, when a cut sheet that is one size smaller than the cut sheet stored in the cassette is selected, the sheet from the cassette is cut in the sheet conveyance path. Cut into 1/2 using a tool. Next, 1
One of the 1/2 cut sheets (1/2 cut sheet) is evacuated to a retraction position using a retraction means, and the other I/72 cut sheet is fed to the printing section.

Thereby, it is possible to selectively and smoothly feed two types of cut sheets that are one step different in size to the printing section using one cassette, and it is possible to achieve downsizing and cost reduction.

In the invention set forth in claim 2, when the paper cut selection switch is operated and 1/2 cut paper is selected, the control means operates the cutting means to cut the cut paper into 1/2, and The evacuating means is operated to evacuate one of the 1/2-cut sheets to the evacuated position, and feed the other 1/2-cut sheet to the printing section. On the other hand, if the 1/2 cut sheet already exists at the retracted position, the control means operates the reverse feeding means to reversely feed the 1/2 cut sheet to the paper transport path side. As a result, it is possible to achieve miniaturization and cost reduction, and it is also possible to selectively and smoothly feed one or two cut sheets to the printing section, further improving the handling properties.

E implementation IM E An embodiment of the present invention will be described based on the drawings.

The paper feeding device according to this embodiment is applied to a printer. In order to achieve miniaturization and cost reduction, this paper feeding device is designed to handle cut paper of one size step different in one cassette 3 (in this embodiment, A4
and A5 cut paper) can be selectively fed to the printing unit 2 (to print/y/d 3. platen 4 ink ribbon 5).

Specifically, the paper feeding device includes a cassette 31. Paper feeding means 32 (paper transport path Fl@33, paper feeding roller 34
, conveyance rollers 35.36, 37.38), paper cut selection switch 39. Cutting means (41) Retracting means 51. It is configured to include reverse feeding means 61 and control means 7I.

Components that are the same as those shown in FIG. 5 are designated by the same reference numerals, and explanations of those portions will be omitted or simplified.

Here, the cassette 31 stores cut paper (A4 cut paper in this embodiment).

Further, the paper feeding means 32 includes a paper feeding roller 34 and a paper transport path F! Conveyance roller 35 arranged at @33.
36, 37, 38, etc. In this embodiment, the conveying roller 36 is configured to be able to rotate forwardly and reversely.

Further, the paper cut selection switch 39 is a means for instructing the cut paper (A4 cut paper) in the cassette 31 to be cut into 17.2 pieces.

In this embodiment, the paper cut selection switch 39 is
It is configured using switches on an operation panel (not shown).

Furthermore, the cutting means cuts the cut paper into the paper conveyance path 33.
In the 6-barrel ρj, which is a means for cutting the sheet into half on the side, the cutting means is formed by a cutter 41 provided on the paper conveyance path 33 side upstream of the printing section 2.

Further, the retracting means 51 is a means for retracting one of the 1 and '22 cut sheets (in this embodiment, the latter 1 and '2 cut sheet) cut by the cutting means (cutter 41) to the retracting position P1. Specifically, the evacuation means 1 includes the evacuation path 52.1G, the feeding path switching claw 53, and the feeding roller 64.
It is formed by including.

This feed roller 64 is configured to be able to rotate forward, reverse, and hold paper. Thus, the retracting means 51 guides the 1/2 cut sheet, which is cured and fed to the paper transport path 33 by the transport roller 36, into the retract path 52 via the feed roller 64 by switching the transport path switching type 53. It is configured to retreat to a retreat position P1.

On the other hand, the reverse feeding means 61 moves the 1
In this embodiment, the reverse feeding means 61, which is a means for feeding the /2 cut paper backward to the paper conveyance path 33 side, includes a feed roller 64 and a conveyance roller 36. That is, the reverse feeder Pi61 moves to the retracted position 'I1 by reversing the feed roller 64 and the conveyance roller 36.
．． Transfer the 1/2 cut paper that had been saved to P1 to the paper transport path F.
The configuration is such that it is sent backwards to I@331m. Note-1
/2 The cut paper comes out from the evacuation path 52 and moves to the paper conveyance path Fl.
When moving to @33, the conveyance path switching type 53 is configured to be switched so that the cut paper concerned is fed to the printing section 2.

Furthermore, the control means 71 controls the paper force/lt selection switch 3.
9 is operated, the cutter 41 is operated, and the cutter 41 is cut by the cutter 41.
The evacuation means 51 is operated so that one of the /2 sheets (for the latter half 1./22 cut) is retracted to the evacuation position P1, while the 1/'2 cut sheet is present at the evacuation position P1. In some cases, the reverse feed means 61 is operated. In this embodiment, the control means 71 includes the aforementioned paper feeding means 32. Paper cut selection switch 39. cutter 4], evacuation means 51. Reverse feed means 61 and the like are connected. Further, the control means 71 is configured by using some functions of a control device that controls the entire printer in order to share parts and achieve downsizing and cost reduction.

Note that the sheet detection sensor 5 is configured to detect whether or not a 1/'2 cut sheet exists at the retreat position P1.

Next, the operation of this embodiment will be explained based on the flowchart shown in FIG.

When cassette paper feeding is commanded via the operation panel, the control means 71 operates the paper feeding means 32 to feed the cassette 31.
The A4 cut paper is fed to the printing unit 2 [Step (hereinafter referred to as ST) 101°. Then, at 5T12, it is determined whether a 1/'2 cut command has been output from the paper cut selection switch 39. If it is recognized that there is no 1/2 cut command, feeding of the cut paper continues (ST26).

On the other hand, when it is determined that the 1/2 cut command has been issued at T2''A, it is determined whether there is no 1/2 cut paper at the evacuation position P1 (ST14). When it is recognized that there is no paper feeder 32 (paper feed roller 34 and transport rollers
6) is operated to feed the A4 cut paper a predetermined length from the cassette 31 and position the cut paper so that the center portion of the cut paper is located on the cutter 41. In this state, the cutter 41 is operated to cut the A4 cut paper into 1/'2 (ST16).

Next, 1.・One of the sheets for '22 cut (in this implementation %1, the first half cut paper) is transferred to the conveyance roller 36.
．． 37, 38, etc., to the printing unit 2 (ST18
．． 20). The last 1 or 2 sheets are stored in the evacuation means 51.
is used to retreat to the retreat position P1 (ST24>).

Note that if there is already a 1/2 cut sheet at the evacuation value WP1, the reverse feed means 61 is operated to reverse feed the 1/2 cut sheet to the paper conveyance path 33 side, and the paper feed means (conveyance roller 36, 37, and 38), it is fed to the printing unit 2 (ST14, 22, 26).

In this way, operate the three paper cut selection switches to
When /2 cut is commanded, the control means 71 causes the cutter 4 to
1. The evacuation means 51 and the reverse feeding means 61 are operated,
172 cuts of cut paper and evacuation of 1/72 cut paper in the second half and 1.・Printing section 2 for 2-cut paper
feeding is done automatically.

Therefore, in this embodiment, a cutting means (a counter 4
1) and the cut 1/'2 cut paper to the evacuation position P.
1, it is possible to selectively and smoothly feed two types of cut sheets that are one step different in size to the printing section, while achieving downsizing and cost reduction. can.

Particularly, in this embodiment, in addition, a paper cut selection switch 39, a reverse feeding means 61 for feeding the 1/2 cut paper present at the evacuation value ffP1 back to the paper conveyance path 8@33 side, and a paper cut selection switch 39 are provided. On the condition that the selection switch 39 is operated, the cutting means (41) is operated and the 1/2 cut by the cutting means (41) is
Move the latter half of the cut paper to the evacuation position P.
The evacuation means 51 is operated to evacuate to 1, and on the other hand,
a control means 71 for operating the reverse feeding means 61 when there is a 1/2 cut sheet at the retreat position P1;
As a result, it is possible to significantly improve the handleability, reduce the size, and reduce the cost.

In the above embodiment, the cutting means (41) is provided upstream of the printing unit 2, and after cutting the cut paper into 1/2, the first half of the cut paper is fed to the printing unit 2. As shown in FIG. 4, a cutting means (41) is provided on the downstream side of the printing section 2, and after printing on the first half of the cut paper, the cutting means (41) cuts the paper into 1/2. In such a case, after cutting the paper into 1/2 by the cutting means (41), switch the conveyance path switching wind 53, and in this state, transfer the latter 1/2 cut sheet to the conveyance roller 3.
7 and 38, it is retracted to the retracted position P1.

Further, the paper feeding device according to the present invention may be applied to other recording devices (for example, a copying machine).

[Effects of the Invention] According to the invention described in claim 1, there is provided a cutting means for cutting the cut paper into 1/2 in the paper conveyance path, and a cutting means for cutting the cut paper into 1/2 in the paper conveyance path; Since the structure is equipped with a retracting means for retracting to the retracting position, it is possible to selectively and smoothly feed two types of force/sort paper that differ in size by one step to the printing section while aiming for downsizing and cost reduction. I can do something.

According to the invention set forth in claim 2, in addition, a paper cut selection switch, a reverse feeding means for feeding the 1/2 cut paper existing at the retracted position back to the paper conveyance path side again, and a paper cut selection switch. is operated, the cutting means is operated and the evacuation means is operated to evacuation of one of the 1/2 cut sheets cut by the cutting means to the evacuation position; Since the configuration includes a control means for operating the reverse feeding means when there is a 1/2 cut sheet at the position,
The effect of the invention described in claim 1 can be achieved, and the ease of handling can be further improved.

[Brief explanation of drawings]

Figures 1 to 4 are diagrams showing one embodiment of the present invention, with Figure 1 showing the main parts, Figure 2 showing the electrical configuration, and Figure 3 showing the operation. The flowchart, FIG. 4, is a diagram showing a modification. FIG. 5 is a diagram showing a schematic configuration of a recording apparatus to which a conventional paper feeding device is applied. 31...Cassette, 33...Paper transport path, 39...Paper cut selection means, 41...Cutter (cutting means), 51...Evacuation means, 61...Reverse feeding means, 71... - Control means.

Claims (2)

[Claims] (1) In a paper feeding device of a recording device configured to feed cut paper in a cassette to a printing unit via a paper transport path, a cut that cuts the cut paper into 1/2 in the paper transport path. A paper feeding device for a recording apparatus, comprising: a means for retracting one of the cut 1/2 sheets of paper to a retracting position. (2) In a paper feeding device of a recording device configured to feed cut paper in a cassette to a printing unit via a paper transport path, a paper cut selection switch; a cutting means for cutting the 1/2-cut paper into 1/2, an evacuation means for evacuating the cut 1/2-cut paper to the evacuation position, and a reverse feeder for transporting the 1/2-cut paper existing at the evacuation position back to the paper conveyance path side again. and on the condition that the paper cut selection switch is operated, the cutting means is operated and one of the 1/2 cut sheets cut by the cutting means is evacuated to a retraction position. A paper feeding device for a recording apparatus, comprising: a control means for operating the retracting means and, on the other hand, operating the reverse feeding means when a 1/2 cut sheet is present at the retracted position.