JPH03289261A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To surely detect a recording error for each page by drawing a prescribed mark onto a prescribed position of recording paper and detecting a mark of the discharged recording paper to discriminate the propriety of the transfer of the picture data. CONSTITUTION:When a picture by one page drawn on a photosensitive drum and a mark are transferred to recording paper and the paper is discharged to a discharge tray, a mark sensor 12 detects the presence of the mark transferred to the prescribed position of the recording paper and the result of detection is informed to a CPU 2. Then the CPU 2 discriminates whether or not the recording of a laser plotter 11 is normally implemented based on the presence of the mark informed from the mark sensor 12. Thus, the recording error of the picture data in the laser plotter is surely detected for each page and the result is informed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and in particular, L/-q
-Relates to a facsimile device that detects recording errors due to malfunctions of type plotters and thermal type plotters.

[Conventional technology]

Types of plotters used in facsimile machines are broadly divided into those that record using a laser and those that record using a thermal head, and each type is widespread.

A facsimile machine equipped with a laser plotter converts received image data into predetermined pixel data, drives and controls a laser diode, etc. according to this pixel data, and draws an image with laser light on a photoreceptor drum through an optical system. This drawn image is transferred to recording paper, and copying of the original image is completed.

A facsimile machine equipped with a thermal plotter converts the received image data into predetermined pixel data, drives and controls the thermal head according to this pixel data, heats the ink sheet, and indirectly records the image on regular recording paper. Alternatively, the copying of the original image is completed by recording the image directly on the thermal recording paper.

[Problem to be solved by the invention]

However, in facsimile machines equipped with such conventional laser-type plotters or thermal-type plotters, in the case of laser-type plotters, the photoconductor does not become charged due to a failure in the transfer charger of the photoconductor drum, resulting in images being printed on the recording paper. Even if the paper is ejected without being transferred, the control section does not detect this failure, so there is a problem in that the image recording is treated as normal.

Additionally, in the case of facsimile machines equipped with a thermal plotter, paper may be ejected without recording an image on regular recording paper or thermal recording paper due to an abnormality in the output signal of the circuit that drives and controls the thermal head or a malfunction of the thermal head itself. However, since the control unit does not detect this failure, there is a problem in that the image recording is treated as normal, similar to the above case.

[Purpose of the invention]

Therefore, when drawing pixel data on a photoreceptor drum in a laser plotter, the invention draws a predetermined mark so as to transfer the mark to a predetermined position on a recording paper, and the ejected recording paper By detecting whether or not this mark is present on the paper and determining whether or not the image data has been correctly transferred to the recording paper, errors in recording image data in the laser plotter can be reliably detected for each page. It aims to inform and improve the reliability of facsimile machines equipped with laser-type plotters.

The invention according to claim 2 records a predetermined mark at a predetermined position on a thermal recording paper when recording pixel data in a thermal plotter, and detects whether or not this mark is present on the ejected thermal recording paper. By determining whether or not the image data has been correctly recorded on thermal recording paper using The purpose is to improve the reliability of the equipment.

[Means for Solving the Problems] In order to achieve the above object, the invention according to claim 1 converts received image data into predetermined pixel data, drives and controls a laser emitter according to the pixel data, and performs optical A laser beam is used to draw an image on the photoreceptor drum through the system.
In a facsimile machine equipped with a plotter that transfers the drawn image onto a predetermined recording paper, pixel data for drawing a predetermined mark other than the image data is stored so as to transfer the predetermined mark to a predetermined position on the recording paper. A mark storage means and a mark detection means for detecting the mark transferred to a predetermined position on the recording paper based on the pixel data output from the mark storage means are provided, and the mark detection means is provided to detect the mark transferred to a predetermined position on the recording paper based on the pixel data outputted from the mark storage means, and to detect the mark when drawing pixel data on the photoreceptor drum. 2. A mark is drawn along with image data based on pixel data in a storage means and transferred to a predetermined position on a recording sheet, and success or failure of the recording operation of the plotter is determined based on the presence or absence of the transferred mark. The invention described above provides a facsimile apparatus equipped with a plotter that converts received image data into predetermined pixel data, drives and controls a thermal head according to the pixel data, and records the received image on a predetermined recording paper. mark storage means for storing pixel data of the predetermined mark so as to record a predetermined mark other than data at a predetermined position on the recording paper; mark detection means for detecting the mark, records the mark at a predetermined position on the recording paper along with the image data when recording the image data on the recording paper, and detects the plotter based on the presence or absence of the recorded mark. It is characterized by determining the success or failure of the recording operation.

Hereinafter, a detailed description will be given based on examples.

1 to 3 are diagrams showing an embodiment of a facsimile apparatus according to the invention as claimed in claim 1.

FIG. 1 is a plotter diagram of the facsimile machine 1.
The facsimile device 1 includes a CPU 2, a ROM 3, and a RAM 4.
, an input section 5, a display section 6, a network control section 7, a modem 8, an encoding/decoding section 9, a scanner 10, a laser plotter 11, a mark sensor 12, etc., and each section is connected to a bus 13.
It is connected to the.

The CPU 2 controls each section according to a program stored in the ROMa to execute the sequence of the fudge clearing device 1, and also executes a recording paper mark discrimination processing program to be described later.

A ROM (mark storage means) 3 stores a program for executing a sequence as the facsimile device 1, and also stores pixel data of a mark (for example, a black circle) to be transferred to a predetermined position on a recording sheet. Stores error message data to be displayed on the display section 6 during paper mark discrimination processing.

The RAM 4 has a work area for the CPU 2, and temporarily stores data during program processing by the CPU 2.

The input unit 5 is equipped with one-touch program keys, tincture keys, function keys, etc., and is used to input commands requested by the operator.

The display unit 6 is equipped with a liquid crystal panel, etc., and displays messages (guidance information and error messages) to be transmitted to the opaque.
is displayed to prompt the operator to operate.

The network control unit 7 is connected to the line, and when sending/receiving, executes the communication procedures necessary for facsimile communication with the other party's terminal, and exchanges the sent/received data (image data) with the modem 8. I do.

The modem 8 modulates and demodulates image signals during facsimile transmission and reception.

The encoding/decoding unit 9 compresses (encodes) the transmitted image signal using a predetermined encoding method, and also reproduces (decodes) the received image signal.

As the scanner 10, for example, a CCD (Charge
A line scanner using a Coupled Device is used, and the scanner 10 reads a document line by line and outputs it as image data.

The laser type printer 11 is composed of an LD control board, a laser diode, a polygon mirror, a photosensitive drum, a lens, etc., and the LDIIJ control board is used to store pixel data output from the encoding/decoding unit 9 and the ROM. The laser diode is driven and controlled according to the pixel data for mark drawing output from 3, and a mark is drawn on the image and a predetermined position on the photoreceptor drum by laser light through the polygon, Bonn mirror, and lens (optical system). The image and mark are transferred to the recording paper as shown in FIG. 2, and the copying of the original image is completed.

A mark sensor (mark detection means) 12 detects the presence or absence of a mark (black circle) shown in FIG. 2 which has been transferred to a predetermined position on the recording paper using a laser plotter.

Next, the effect will be explained.

In FIG. 1, when a call is received from a facsimile machine (not shown) via a line, the call is connected and the communication mode is set by the facsimile communication procedure of the network control unit 7 of the facsimile machine 1, and then the image data is reception begins. The received image data is demodulated by the modem 8, reproduced (decoded) by the encoder/decoder 9, and transferred to the laser plotter 11 as predetermined pixel data. In the laser plotter 11, a laser diode is driven and controlled in accordance with the pixel data transferred from the encoding/decoding section 9 to emit laser light, and an image is drawn on the photoreceptor drum by this laser light. When drawing this image, the CPU 2 starts recording paper mark discrimination processing shown in FIG. 3 at a predetermined timing.

In FIG. 3, first, when drawing an image is started, 1
Check the completion of drawing the image data for each page (step PL). When the drawing of the image data for one page is completed, the pixel data for mark drawing is read from the ROM 3 and output to the laser plotter 11. A mark is drawn on the photosensitive drum so that the mark is transferred to a predetermined position on the recording paper (step P2). Thereafter, when the images and marks for one page drawn on the photoconductor drum are transferred to the recording paper and the paper is ejected to the paper ejection tray, the mark sensor 12
The presence or absence of a mark transferred to a predetermined position on the recording paper is detected by the CP 2, and the detection result is notified to the CP 2. Next, the CPU 2 determines whether or not the recording operation of the laser plotter 11 is being performed normally based on the presence or absence of marks notified from the mark sensor 12 (step P).
3). If the mark is recorded, it is determined that the recording operation of the laser plotter 11 is normal, and step P is performed.
Return to step 1 and check the transfer state of the marks on the next page of recording paper. On the other hand, if no mark has been recorded, it is determined that the recording operation of the laser plotter 11 is not normal, and the process moves to error processing (step P4). In handling this error, for example, an error message stored in advance in R,0M3 may be read out to display on the display unit 6 that the recording operation of the laser plotter 11 is defective, or a predetermined alarm sound may be used to notify the user. It is possible to

Therefore, if a failure occurs in the laser plotter 11 of the facsimile machine 1 and the original image is not transferred to the recording paper, it is possible to reliably detect for each page that the recording operation of the laser plotter 11 is not normal, and the user can The user of the facsimile machine 1 can be prevented from overlooking an abnormality in the recording operation of the laser plotter 11, and the reliability of the facsimile machine 1 can be improved.

FIG. 4.5 is a diagram showing an embodiment of the invention according to claim 2.

FIG. 4 is a plotter diagram of the facsimile machine 21, and the same components as those of the facsimile machine 1 shown in FIG.

The factor ξ error device 21 includes a thermal plotter 22, which includes a thermal head having a plurality of thermal elements arranged in a line. The thermal head is driven and heated according to the pixel data for mark drawing outputted from the ROM 3, and is heated either indirectly via an ink sheet on the ordinary recording paper conveyed by the conveyance mechanism or directly on the thermal recording paper. It is heated to record an image and a mark at a predetermined position as shown in FIG.

'ch A. In this embodiment, unlike the above embodiment, the mark is a fixed pattern mark.

In Figure 4, when the image data received from the line is recorded by the thermal plotter 22, it is recorded at a predetermined position on regular recording paper or thermal recording paper by the recording paper mark discrimination process of the CPU 2 shown in Figure 3 above. The mark sensor 12 detects the presence or absence of a mark, and the success or failure of the recording operation of the thermal plotter 22 is determined based on the detection result.

Therefore, when the mark shown in Figure 5 is not recorded on the recording paper, the CPU 2 determines that the recording operation of the thermal plotter 22 is not being performed normally, that is, the CPU 2 determines that the thermal plotter 22 is malfunctioning. Detect and RO
It is possible to display on the display section 6 that the recording operation of the laser type printer 11 is defective by reading out an error message stored in advance in the M3, or to notify it by a predetermined alarm sound. .

As a result, if a failure occurs in the thermal type plotter 22 of the facsimile machine 21 and the original image is not recorded on the recording paper, it is possible to reliably detect for each page that the recording operation of the thermal type plotter 22 is not normal. At the same time, the user can be notified and prompted to take corrective action, and the reliability of the facsimile device 21 can be improved by preventing the user of the facsimile device 21 from overlooking an abnormality in the recording operation of the thermal plotter 22.

Note that in each of the above embodiments, the marks recorded on the recording paper have a certain pattern when darkened, but the present invention is not limited to these, and other types of marks may be used.

〔effect〕

According to the invention as set forth in claim 1, when pixel data is drawn on a photoreceptor drum in a laser plotter, a predetermined mark is drawn so as to be transferred to a predetermined position on a recording paper, and the recording paper is ejected. Since it is determined whether the image data has been transferred normally to the recording paper by detecting whether or not this mark is present on the paper, it is possible to reliably detect recording errors in the image data in the laser plotter for each page. It is possible to improve the reliability of a facsimile machine equipped with a laser type plotter and a laser type printer.

According to the invention as set forth in claim 2, a predetermined mark is recorded at a predetermined position on the recording paper during a gap between recording pixel data in a thermal plotter, and it is detected whether or not this mark is present on the ejected recording paper. Since it is determined whether the image data has been correctly recorded on the recording paper using It is possible to improve the reliability of the facsimile machine equipped with the facsimile machine.

[Brief explanation of drawings]

1 to 3 are diagrams showing an embodiment of a facsimile device according to the invention as claimed in claim 1, FIG. 1 is a plotter diagram of the facsimile device, and FIG. 2 is an output from the facsimile device. FIG. 3, which is a diagram showing an example of recording paper, is a flowchart of the recording paper mark discrimination process. FIG. 4.5 is a diagram showing an embodiment of the facsimile device according to the invention as claimed in claim 2, and FIG.
FIG. 5 is a plotter diagram of the facsimile machine, and is a diagram showing an example of recording paper output from the facsimile machine. 1.21...Facsimile machine, 2...
・CPU. 3...ROM (mark storage means), 4...
...RAM. 5...Manpower section, 6...Display section, 7...--Network control section, 8...Modem, 9...Encoding/decoding Chemical section, 10... Scanner, 11... Laser type plotter, 12...
・Mark sensor (mark detection means), 22...
Thermal type float. Agent Patent Attorney Yugagun Department 1 Figure 1 Figure 1

Claims (2)

[Claims] (1) Convert the received image data to predetermined pixel data, drive and control the laser light emitter according to the pixel data, draw an image with laser light on the photoreceptor drum through the optical system, and transfer the drawn image to the predetermined pixel data. A facsimile device equipped with a plotter for transferring data onto recording paper, comprising: a mark storage means for storing pixel data for drawing a predetermined mark other than the image data so as to transfer the predetermined mark to a predetermined position on the recording paper; and mark storage. mark detection means for detecting the mark transferred to a predetermined position on the recording paper using pixel data output from the means, and when drawing the pixel data on the photoreceptor drum, an image is detected using the pixel data of the mark storage means. A facsimile apparatus characterized in that a mark is drawn along with data and transferred to a predetermined position on a recording sheet, and the success or failure of the recording operation of the plotter is determined based on the presence or absence of the transferred mark. (2) In a facsimile machine equipped with a plotter that converts received image data into predetermined pixel data, drives and controls a thermal head according to the pixel data, and records the received image on a predetermined recording paper, other than the above image data. mark storage means for storing pixel data of the predetermined mark so as to record the predetermined mark at a predetermined position on the recording paper; and the mark recorded at a predetermined position on the recording paper using the pixel data output from the mark storage means. mark detection means for detecting a mark, which records a mark at a predetermined position on the recording paper along with the image data when recording the image data on the recording paper, and controls the recording operation of the plotter based on the presence or absence of the recorded mark. A facsimile machine characterized by determining the success or failure of a facsimile machine.