JPH01203164A - Carrying method of ohp sheet - Google Patents

Abstract

PURPOSE:To protect a recorder from contamination due to coating agent of an OHP sheet and to improve print quality by laminating a plain sheet onto the rear face of an OHP(overhead projector paper) and making a record while feeding the sheet. CONSTITUTION:When it is confirmed that a sheet fed through a manual feed port is an OHP sheet, the OHP sheet 14 is retreated by a predetermined amount into await path 26 separated from a feed path through reverse rotation of a roller 1. Then a sheet feed roller 19 in a cut sheet automatic feeder 16 is operated to feed one plain sheet 18 to the contact section of a first pinch roller 2. Thereafter, the feed roller 1 is rotated forward to feed the sheet with a predetermined pitch and make a record onto the laminated sheets 14, 18 with the OHP sheet 14 directing front side(recoard head 5 side) and the plain sheet 18 directing rear side(fixing heater 6 side). Consequently, adhesion of coating agent onto the surface due to scratching of the coated face of the OHP sheet 14 with the fixing heater can be prevented, resulting in prevention of contamination.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is directed to an OHP paper that overlaps an OHP paper and a mount in a recording device and records on the OHP paper while feeding the sheets.
This relates to a method of transporting HP paper.

[Conventional technology]

In OHP (Oher Hesod Projector), 01-IP paper made of a thin transparent plastic plate is used exclusively, and the printing surface of this OHP paper is formed by coating it with, for example, polyester sheet.

This OHP paper can also be printed on by a recording device such as a printer, and is used to display the printed content on a screen using an OHP (Oha Hesodo Projector).

By the way, if this type of OHP paper is coated on only one side, it may curl due to the effects of heat and moisture during printing, so to prevent this, paper that is coated on both sides is generally used. .

[Problem that the invention seeks to solve]

However, in conventional recording devices, double-sided coating OH
When printing on P paper, there was a problem in that the coating agent adhered to the fixing heater and the like, causing stains.

[Means for solving problems]

The present invention has been made in view of the above-mentioned problems of the prior art, and it is an object of the present invention to provide an OHP conveyance method that can eliminate problems such as coating agent adhesion when printing on double-sided coated OHP paper. .

In the present invention, plain paper is layered on the back side of OHP paper.
The above purpose is achieved by recording while feeding.

The second invention relates to a control operation for stacking and feeding OI-IP paper and plain paper, and when it is confirmed that the sheet fed from the manual feed port is OHP paper, The OHP paper is retreated by a predetermined amount into a standby path that is removed from the supply path, and the plain paper is fed from the cut sheet automatic paper feeder to the peripheral surface of the feed roller, and then,
The above object is achieved by a method of recording on the OHP paper while feeding the OHP paper and the ordinary cut sheet one on top of the other.

〔Example〕

The present invention will be specifically described below with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a recording apparatus suitable for carrying out the OHP paper conveyance method according to the present invention.

In FIG. 1, pinch rollers 2, 3.
4 are releasably pressed against each other, and the feed roller 1 feeds the sheet (recording medium) to the front of the recording head 5, and the recorded sheet is passed along a guide 6 that also serves as a fixing heater and from above by a discharge roller 7. It is discharged and stored in the stacker 8.

The illustrated printing apparatus is a serial type ink sheet printing apparatus, and the printing head 5 is mounted on a carriage 10 that reciprocates left and right along a slide shaft 9.

The discharge roller 7 has two self-centering spurs 11 and 12.
This forms a pair of rollers and constitutes a discharge mechanism that pulls up the sheet.

Furthermore, a guide spur 13 is provided on the downstream side of the recording head 5 to prevent the rear end of the sheet that has left the head 5 from jumping up.

A feeding mechanism for sheets 1 (paper, etc.) is installed upstream of the feed roller 1. The illustrated sheet feeding mechanism consists of, from above, a manual feed port 15, an automatic cut sheet feeding device 16, and an automatic OHP paper feeding mechanism. It is composed of a paper device 17.

The cut sheet automatic paper feeder 16 feeds plain paper 18 of a predetermined size.
The peripheral surface of roller 1 (first pinch roller 2)
This device is equipped with a paper feed roller 19, a separation claw 20, and the like.

The OHP paper automatic paper feeder 17 feeds OHP paper sheets I/21 in which OHP paper sheets and mounts are alternately stacked.
A separating roller 22 and a separating plate 23 are configured to separate and feed the sheets one by one starting from the top layer.

A reflective sheet sensor 24 is disposed upstream of the contact portion between the feed roller 1 and the first pinch roller 2, and reflective sheet sensors 1 to 24 are also arranged at the outlet from the automatic OHP paper feeder 17. 25 are arranged.

A standby path 26 is formed downstream of the automatic OHP sheet feeding device 17 to temporarily store sheets that have come off the sheet feeding system.

A mechanical guide 29 whose pin 27 is rotated by a middle IC bow solenoid 28 is arranged at the boundary between the outlet of the automatic OHP paper feeder 17 and the entrance of the standby passage riPf 26.

This mechanical guide 29 is biased in the direction of the arrow (clockwise) by a return spring, and is in the position shown by the solid line when the solenoid 28 is OFF, but switches to the position shown by the chain double-dashed line when the solenoid 28 is turned ON.

Further, a sea I sensor 30 is arranged near the contact point between the feed roller and the third pinch roller. This sea I sensor 30 is used to control the cueing of seas 1 to 1 to be sent to the recording section.

Next, in the recording apparatus shown in FIG.
The sheet tBi feeding operation when inserting the HP paper 14 will be explained.

When feeding transparent OHP paper 14 from the manual feed port 15, the reflective sheet sensor 24 alone cannot detect that it has been fed, but if the fed 01 (P paper 14 is
When the sheet passes through the pinch roller 2 and contacts the sheet sensor 30, it cannot be detected by the reflective type but can be detected by the mechanical type.
It is confirmed that it is paper.

When it is confirmed that the paper is OHP paper, the feed roller 1 is rotated in the forward direction by a predetermined amount to advance the OHP paper by a predetermined amount until the trailing edge passes through the mechanical guide 29 .

Next, the feed roller is rotated in the reverse direction by a predetermined amount to cause the OHP paper 14 to retreat by a predetermined amount into the waiting path 26 which is out of the supply path. At this time, the leading edge of the OHP sheet is brought into close contact with the feed roller by the second pinch roller 3.

At this time, the paper feed roller 9 of the cut sheet automatic paper feed device 16 is operated to feed one sheet of plain paper to the contact portion of the first pinch roller 2.

Here, when the feed roller is rotated in the forward direction again, O
HP paper 14 and plain paper (cut sheets 1-18) are fed in an overlapping state.

In this way, the OHP paper is placed on the front side (recording head 5 side),
Recording is performed with the plain paper on the back side (on the side of the fixing heater 6) while feeding it with a predetermined pinch.

The recorded OHP paper is sent to the ejection roller 7 along with the plain paper.
is discharged onto the stacker 8.

FIG. 2 is a block diagram of a control system of a recording apparatus suitable for carrying out the OHP sheet narrowing down method described above.

In FIG. 2, a 7 microprocessor 40 that controls the operation of the recording device receives print data and command data from the host system 35 via an interface 41, and based on these data and various sensors and input information, Sheet feed motor 43 via driver 42
, carriage motor 44, recording head 5, automatic cutter/sheet feeding device 16, automatic OHP sheet feeding device 7, solenoid 28, and the like.

The microprocessor 40 is equipped with a ROM that stores programs, etc., and a RAM that stores print data, input information, etc. at any time. P
A control circuit is provided which receives detection signals from the E (no sheet) sensor 30 and outputs predetermined control signals based on these detection signals.

FIG. 3 is a flowchart showing the operational procedure when carrying out the above-described OHP sheet feeding method.

In FIG. 3, when it is confirmed in step 101 that the paper inserted from the manual feed port 15 is not plain paper but transparent ○■ 1P paper, the process proceeds to step 102, where the OHP paper is advanced by a predetermined amount by the conveyance means, In the next step 103, the OHP paper is returned by a predetermined amount, and the OHP paper is returned from the rear end to the waiting path 26.
to invade inside.

After that, the process proceeds to step 104, in which cutsheets 1 to (plain paper) that serve as interleaving sheets (or backing sheets) of OHP sheets are fed from the automatic sheet feeding device 16 by the sheet feeding roller 19 to the feed roller 1 circumferential surface (
(contact part with the first pinch roller 2).

Therefore, when the process advances to step 105 and the feed roller (main roller) 1 is rotated in the forward direction again, the OHP paper and plain paper are simultaneously fed in a stacked state.

At this time, the OHP paper is on the recording gutter 5 side, and the plain paper is on the side that comes into sliding contact with the fixing heater 6.

In this way, recording is performed in step 106 with the plain paper (cut sheet 1-) used as the backing paper.

According to the OHP paper IM feeding method described above, when recording on the OHP paper 14 inserted from the manual feed slot 15, the plain paper 18 of the sheet feeder 16 provided in the recording device is used as the backing paper. I'm going, so OH
It is now possible to prevent the coating surface of the P paper 14 from being rubbed by the fixing heater 6 or the like and causing stains such as the coating agent adhering to the surface.

Further, the plain paper used as the backing paper can be used as a backing paper as it is after being ejected, which is convenient.

〔Effect of the invention〕

As is clear from the following explanation, according to the present invention, O
Because plain paper is stacked on the back side of HP paper and recording is performed while feeding the sheet, it is possible to prevent the recording device from being soiled by the OHP paper's coating agent, and improve printing quality. A transportation method is obtained.

In this case, the OHP paper does not stick to the conveyance path.

In addition, by controlling the cut sheet roller, a method for transporting OI-(P paper) that can be easily implemented and suitable for automation can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a recording device suitable for carrying out the OHP paper conveyance method according to the present invention, FIG. 2 is a block diagram of a control system of the recording device shown in FIG. 1, and FIG. 3 is a diagram similar to that shown in FIG. Flowchart 1 showing the operating procedure when carrying out the method of the present invention with the apparatus of
・It is. 1 ---------- One feed roller, 5 , -, --------
--Record Hesod, 14--------m--O I-T
P paper, 1 5-----1 Manual feed slot, 16------- Casotoshi I/automatic paper feeder, 18----
Plain paper (cut sheet 1-), 24, 25 --- Reflective sheet sensor, 2 6--Waiting passage, 28 -- Solenoid, 2 9--------
Mechanical Kai I. Agent Patent Attorney Takeshi Yasushi OtoFigure 3

Claims (3)

[Claims] (1) A method for transporting OHP paper, which is characterized by stacking plain paper on the back side of OHP paper and recording while feeding the sheet. (2) The method for transporting OHP paper according to claim 1, wherein a cut sheet supplied from an automatic cut sheet feeder is used as the plain paper. (3) In a recording device that is equipped with a manual feed port and an automatic cut sheet feeder, and is configured to send the fed sheet to the recording unit using a feed roller, the sheet fed from the manual feed port is OHP paper. When I checked this O
advancing the HP paper by a predetermined amount with the feed roller, then retracting the OHP paper by a predetermined amount into a standby path removed from the supply path, and feeding plain paper from the cut sheet automatic paper feeder to the peripheral surface of the feed roller; Thereafter, the OHP paper conveying method is characterized in that recording is carried out on the OHP paper while feeding the OHP paper and the plain paper in an overlapping manner.