JPH0310864A - Recording apparatus - Google Patents

Abstract

PURPOSE:To perform accurate recording by setting a recording sheet to an accurate position by detecting the leading end of the recording sheet, in automatically setting the recording sheet, by detecting the leading end thereof by a sheet sensor and subsequently further feeding the recording sheet by predetermined quantity to set the same. CONSTITUTION:When a recording sheet 3 is inserted from an inlet part 5 and the automatic setting mode of the recording sheet 3 is selected, a feed motor 4e is driven and the recording sheet 3 is fed by the rotation of a platen roller 4d until the leading end thereof is detected by a sheet sensor 8. When the leading end of the recording sheet 3 is detected by the sheet sensor 8, the feed motor 4e is driven while the number of steps of said motor 4e is counted and the driving of the motor 4e is stopped at the point of time when the motor 4e is rotated by (m) steps to emit a sheet sitting completion signal. Therefore, the leading end of the recording sheet 3 is set to the position fed by (m) steps from the point of time when the leading end is detected by the sheet sensor 8 regardless of the insertion quantity from the inlet part 5 to wait for recording data.

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a recording apparatus that can automatically center recording sheets.

<Prior Art> Today, information input/output devices such as word processors, personal computers, and electronic typewriters are widely used, and among these, portable type devices are increasingly used.

With these portable type word processors, when inserting a recording sheet for recording, you can manually turn the feed knob to feed the leading edge of the sheet to a specified position, or press the feet inch. The method used was to send a fixed amount and receive cents.

<Problems to be Solved by the Invention> However, in the configuration in which the feed knob is set by turning the feed knob, the setting position may deviate due to individual differences, and in the configuration in which the feed switch is pressed down, it is difficult to place the recording sheet in a predetermined position. There was a problem in that the leading edge of the sheet could not be set in the correct position unless the switch was pressed after setting.

As described above, if the sheet is not set in the correct position, inconveniences will occur such as recordings extending outside the frame of a predetermined format or recordings occurring outside the sheet.

The present invention solves the above-mentioned conventional problems and provides a recording apparatus that can set the leading edge of a sheet at an accurate position.

<Means for Solving the Problems> A typical means according to the present invention for solving the above problems includes an input section for inputting information, a display section for displaying the input information, and a display section for displaying the input information. The present invention is characterized in that it is provided with a recording section for recording information on a recording sheet, and a sheet set control device 1' for conveying the leading edge of the sheet to a predetermined position when the recording sheet is inserted into the recording section.

In the above-mentioned means, when setting a sheet, it is detected whether or not the leading edge of the sheet has been conveyed to a predetermined position, and sheet setting is completed when the leading edge of the sheet has been conveyed to the predetermined position.

By setting the sheet as described above, the leading edge of the sheet is always at the set position and accurate recording can be performed.

<Embodiment> Next, an embodiment in which the above means is applied to a portable electronic typewriter will be described with reference to the drawings.

[First example]

Figure 1 is an explanatory diagram of the external appearance of an electronic typewriter;
Figures (al and kl) are explanatory diagrams of the configuration of the recording section.

This device includes a keyboard 1 for inputting information, a liquid crystal display section 2 for displaying the input information, and a recording section 4 behind the display section 2 for recording the input information on a recording sheet 3.
It is made up of.

That is, character information and the like input by typing on the keyboard 1 are displayed on the display section 2. In order to record this information, the thermosensitive recording sheet 3 is set, and when the recording start key is pressed, the recording section 4 is driven and the information is recorded.

In this embodiment, the recording section 4 employs a line type thermal recording method.

Specifically, Fig. 2 (side cross-sectional explanatory view of al) and Fig.
As shown in the plan view of FIG. 1, a head holder 4a that also serves as a heat sink and a recording head 4b in which heating elements that generate heat when energized are arranged in a line are integrally constructed, and a pressing spring 4c pushes the recording head 4b onto a recording sheet. It is pressed against a platen roller 4d which also serves as conveyance means of No. 3.

Further, a feed motor 4e is connected to one end of the platen roller 4d, and a feed knob 4f is provided at the other end. Therefore, when feeding the recording sheet 3, by switching the cent mode, the feed motor 4
The automatic setting mode in which the recording sheet 3 is set by driving the knob e, and the manual setting mode in which the recording sheet 3 is set by turning the knob 4f by hand are selectable.

In addition, as shown in FIG.
The sheet is guided by a sheet guide 6 provided along the recording head 4b and the platen roller 4d, and is discharged from the apparatus from a discharge portion 7 formed at the upper part of the exterior.

Furthermore, a sheet for detecting the leading edge of the fed recording sheet 3 is located at a predetermined position downstream in the sheet conveyance direction from the pressure contact position between the recording head 4b and the platen roller 4d (hereinafter referred to as "recording position j"). A sensor 8 is provided.

In this embodiment, when automatically setting the recording sheet 3, after the sensor 8 detects the leading edge, the feed motor 4e is configured to further rotate or convey m steps to set the sheet by a predetermined amount (in this embodiment, the feed motor 4e is configured to rotate or convey m steps). .

The control means for this purpose is constructed as shown in the block diagram of FIG. This block diagram shows a configuration for performing a recording operation, and the control unit 9 includes a CPU 9a such as a microprocessor, a ROM 9b storing control programs and various data for the 1cPU 9a, and a work area for the CPU 9a. , a RAM 9c for temporarily storing various data, etc. A sheet sensor 8 is connected to this vibration damping section 9 via a controller 10.
, to input signals from the operation panel 1) for selecting a mode and setting recording density, etc., and a recording data signal based on information inputted from the keyboard 1, and for driving the recording head 4b in accordance with this data signal. It is configured to output signals for driving the feed mode 4e, as well as signals for driving the feed mode 4e.

In FIG. 3, 12 is a data line, 13 is a stakes line, and 14 is a set completion signal line.

The control procedure for setting the recording sheet 3 by the control means will be explained with reference to the flowchart of FIG. 4.

When the recording sheet 3 is inserted from the entrance portion 5 and the automatic setting mode of the recording sheet 3 is selected in step SL,
Step S2. In S3, the feed motor 4e is driven, and the recording sheet 3 is rotated by the platen roller 4d.
The sheet is fed until the leading edge of the sheet is detected by the sheet sensor 8.

When the leading edge of the recording sheet 3 is detected by the sheet sensor 8, the feed motor 4 is activated in steps 84 to S7.
The motor 4e is driven while counting the number of steps e, and when the motor 4e has rotated m steps, the drive of the motor 4e is stopped, and a sheet set completion signal is sent in step S8.

Therefore, regardless of the amount of insertion from the inlet portion 5, the leading edge of the recording sheet 3 is set at a position where it has been transported m steps from the time when the leading edge is detected by the sheet sensor 8, and waits for recording data.

Incidentally, when the manual setting mode is selected in step S1, the feed motor 4e is not driven, and the sheet 3 is set by manually rotating the knob 4f.

In the above-mentioned embodiment, an example of a line-type electronic typewriter using a heat-sensitive sheet was shown, but the sheet set configuration described above can also be used in a thermal transfer recording method using an ink sheet. It goes without saying that it can also be used in a serial recording method in which the recording medium is mounted on a carriage and recorded line by line.

<Effects of the Invention> As described above, in the present invention, when setting a recording sheet, the leading edge of the sheet is detected by a sheet sensor and conveyed to a predetermined position and set, so that the recording sheet can be set at an accurate position. This makes it possible to record accurately.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the external appearance of a recording device according to an embodiment of the present invention, FIG.
The figure is a block diagram showing the sheet setting control means, and FIG. 4 is a flowchart showing the sheet setting procedure. 1 is a keyboard, 2 is a display section, 3 is a recording sheet, 4 is a recording section, 4a is a head presser, 4b is a recording sheet, 4c is a pressing spring, 4d is a platen roller, 4e is a feed motor, 4f is a feed knob, 5 is a population section, 6 is a sheet guide, 7 is a discharge section, 8 is a sheet sensor, 9 is a control section,
9a is a CPU. 9b is ROM, 9C is RAM, 10 is controller, 1
) is the operation panel. Figure 2 (a) (b) Figure 3 Figure 4

Claims (2)

[Claims] (1) An input section for inputting information, a display section for displaying the input information, a recording section for recording the input information on a recording sheet, and when the recording sheet is inserted into the recording section. A recording device comprising: a sheet set control means for conveying a leading edge of a sheet to a predetermined position. (2) A sheet sensor is provided downstream of the recording position of the recording section in the sheet conveyance direction, and the sheet set control means is configured to convey the recording sheet by a predetermined amount and set it after the sheet sensor detects the leading edge of the recording sheet. The recording device according to claim (1).