JPS6287367A - Recording device sheet conveyance device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technology] The present invention relates to a sheet conveying device capable of feeding both cut sheets 1 to continuous sheets to the front surface of a recording head in a recording apparatus such as a printer or a facsimile.

[Prior art]

Recording devices such as printers and facsimiles are used as output means for electronic processing devices such as computers.

Paper or thin plastic plates used in recording devices (recording media) are broadly divided into continuous sheets such as fan-hold paper that has feed holes on both sides, and cut sheets fed one by one. There are two types: conventionally, for example, PCs mainly use continuous sheets, soaps [1] (91" cut sheets are used, etc., and each electrical processing device uses one of the sheets). It was common to use.

However, recently, with the diversification of electronic processing devices such as the appearance of personal computers with word processing functions, it has become popular to be able to record on both continuous sheets and cut sheets. 1 People who are becoming sea urchins:.

By the way, in a conventional recording apparatus, a continuous sheet is generally fed once to the front of the recording sheet through a pin feed device and a conveyance roller, and when a cut sheet is used, the continuous sheet is conveyed halfway. The above-mentioned request has generally been met by a method in which the cut sheet is taken out, the pin feed device is also removed as necessary, and the cut sheet is fed to the conveying roller.

However, with such conventional technology, each time the sheet is changed, it is necessary to take out the sheet that has been conveyed halfway and re-centre a new sheet, which poses a problem that the operation is complicated and time-consuming. .

Also, a structure has been proposed in which a continuous sheet is set and a cut sheet is stacked on top of the other for II feed, but in this case both sheets are conveyed at the same time.
The problem is that there is waste.

(Objective) The object of the present invention is to provide a sheet till feeding device for a recording apparatus that can solve the problems of the prior art, can convey both continuous sheets and cut sheets, and can eliminate waste of continuous sheets. It is to provide.

(Overview) The present invention conveys a continuous sheet having feed holes to the front surface of a recording head by driving a pin feed device and a conveyor 11-ra, and drives a pinch roller that is in rF contact with the conveyance roller to convey a cut sheet. and is configured to transport the sheet to the front of the recording head, and when it is detected that there is a sheet in the cut sheet insertion 11, the pin feed device and the first general feed roller are stopped and the pinch roller can be driven. By doing so, the above objective is achieved.

〔Example〕

The present invention will be explained in detail below with reference to the drawings.

FIGS. 1 and 2 show a recording apparatus according to an embodiment of the present invention. A schematic cross section of the feeding device is shown, with FIG. 1 showing the continuous sheet N being fed, and FIG. 2 showing the cut sheet 11J being fed.

In FIGS. 1 and 2, a recording head 1 faces a platen 2 and records on a sheet conveyed through a recording section therebetween.

A conveyance roller 3 and a pinch roller 4 that is pressed against the conveyance roller are installed below the recording spatula FI.

A continuous sheet 5 such as fan-hold paper having feed holes on both sides is fed to the circular surface of the conveyance roller 3 through a pin feed device 6, and conveyed by the pinch roller 4 to be conveyed 1ul to the front of the recording head 1. be done.

゛ The pin feed device W6 includes a pin feed wheel 8 having a plurality of bins 7 that engage with the feed holes of the continuous sheet 5.
A guide 9 is formed along the path of the continuous sheet 5.

On the other hand, the cut sheet 10 is supplied between the 1M feed roller 3 and the pinch roller 4 from an insertion opening 11 provided separately, and further conveyed to the front surface of the recording head 1.

A sheet detector 12 is provided at an appropriate position in the insertion opening for the cut sheet 10 to detect the presence or absence of the sheet by optical or other methods.

When recording on the continuous sheet 5, as shown in FIG.
By rotationally driving the pin feed wheel 8 and the first general feed roller 3 in the direction of the arrow shown in the figure, the continuous sheet 1-5 is conveyed to the front surface of the recording head 1. In this case, pinch roller 4
is brought into a freely rotating state and is driven to rotate in the direction of the arrow shown in the figure by the pressure contact force.

Next, when recording on the cut sheet 10, as shown in FIG. is stopped (in a non-rotating state), and the pinch roller 4 is actively driven in the direction of the arrow shown in the figure to be set in a state in which the sheet can be conveyed.

By driving the pinch roller 4, the cut sheet 1
0 is generally sent to the front of the recording head 1.

In this way, cut sheets 10 to 11! When feeding, the pin feed device 6 and conveyance roller 3 are stopped, so
The continuous sheet 5 is not fed halfway (or any further even if it is in the general feeding state) and is held in its original position in the cent state.

When the supply of the cut sheet 10 is stopped and recording is performed on the continuous sheet 5 again, sheet conveyance and recording can be resumed immediately from the original state without any need for sheet setting or other operations.

FIG. 3 is a block diagram of a control system for realizing the following operations.

In FIG. 3, a control circuit (microprocessor) 20 of the recording apparatus is connected to an electronic processing unit W21, which is a host machine, and a carriage motor 23, a bin foot motor 24, Controls various drive sources such as the conveyance roller drive motor 25 and the pinch roller drive motor 26.

The recording head 1 is also driven by the CPU 20 via the driver 22 based on command signals and print data signals.

Presence of cut sheet 1° from the sheet detector 12,
I! (Information signals related to this are also always manually input to CP tJ 20, and based on the information signals, sheet 11 is
(!The sending operation is controlled.

The CPU 20 is also provided with a ROM and an AM, and various operations of the recording apparatus are executed according to programs stored in the ROM.

FIG. 4 is a flowchart 1 illustrating the operation procedure of the sheet llt feeding device shown in FIGS. 1 and 2. FIG.

In FIG. 4, when the sheet 11! feeding operation is started in step 100, first in step 101 it is determined whether or not there is a cut sheet 10 stuck in the sheet detector 12.

If cut sheet 10 is inserted, step 102
Proceed to pin feed device w6 and 1ull feed roller 3
In step 103, the pinch roller 4 is rotated (or in a state where it can be rotated), and in step 104
cant sheet 1 at the specified timing and feed pitch.
Send 11g of 0.

If the cut sheet 10 is not inserted in step 101, the process proceeds to step 105, where the pinch roller 4 is turned off to allow free rotation, and in the next step 106, the pin feed device 6 and the one-way feed roller 3 are turned on and rotated ( In step 107, the continuous sheet 5 is conveyed at a predetermined timing and feed pitch.

From step 104 and step 107, the process returns to step 101 at regular timings, and the above operation procedure is repeatedly executed.

According to the embodiment described above, when it is detected that there is a sheet in the insertion path 1 of the cut sheet 1-10, the pin feed device 6 and the conveyance roller 3 are stopped. Since only the cut sheet 10 is (generally fed) by the pinch roller 4, even if the continuous sheets 5 are conveyed halfway and overlap, the conveyance of the continuous sheets can be stopped in that state.

Therefore, wasteful conveyance of the continuous sheet 5 can be prevented, and when the continuous sheet 5 is used again, the recording operation can be resumed, making the operation when changing sheets extremely easy. . "The present invention can be similarly applied to the case where a pin feed tractor is used instead of the illustrated pin feed wheel 8, and regardless of the recording method such as a wire dot type, an inkjet type or a square type, Furthermore, the present invention can be similarly applied to devices equipped with multiple recording heads, such as color printing.

Furthermore, the present invention can be widely applied regardless of differences in printing methods, such as a serial printing method in which the recording head is moved by a carriage, a line printing method in which one line is printed, or a page printing method in which one page is printed one by one. can.

Furthermore, if the insertion passage 11 of the cut sheet 10 in FIGS. 1 and 2 is located on the side opposite to the supply side of the continuous sheet 5 as shown in the drawings, it will be convenient to handle the sheet, but the position is limited to this. It is possible to provide it at any other suitable location.

〔effect〕

As is clear from the above description, according to the present invention, there is provided a sheet conveying device for a sheet-combining type recording apparatus that eliminates the waste of continuous sheets and can very easily be replaced with cut sheets.

[Brief explanation of drawings]

FIGS. 1 and 2 show continuous sheet conveyance of the sheet conveying device of the recording apparatus according to an embodiment of the present invention, and cut sheet 1-11! ! A schematic cross-sectional view during feeding; FIG. 3 is a block diagram of the control system of the Sea 1 general feeding device shown in FIGS. 1 and 2;
FIG. 4 is a flowchart showing the operating procedure of the control system shown in FIG. 1---1 recording head, 3---1 conveyance roller, 4
-1---pinch 11-ra, 5---one continuous sheet, 6
-----Bin feed device, 10--one kasoto sheet,
11------One cassette sheet insertion slot, 12- Sheet detector. Agent Patent Attorney Yasushi Ooto Takerei 21 Koushichi

Claims (1)

[Claims] (1) A continuous sheet with feed holes is transported to the front of the recording head by driving a pin feed device and a transport roller, and a cut sheet is transported to the front of the recording head by driving a pinch roller that is pressed against the transport roller. A sheet recording apparatus, characterized in that the pin feed device and the conveyance roller are stopped and the pinch roller is enabled to be driven when it is detected that there is a sheet in the cut sheet insertion slot. Conveyance device.