JPH0192764A - Information outputting device for copying machine or the like - Google Patents

Abstract

PURPOSE:To confirm which parts are troubled in a short time and to save the maintenance time of service by outputting jam frequency and jam ratio per sort on a copy sheet at a time. CONSTITUTION:In response to the jam frequency written in nonvolatile memory, electric charges of the image part of a chart sheet 18 are erased by an electric charge erasing means 7a, and a latent image which is not erased is transferred to a transfer sheet as a visible image. Accordingly, the jam frequency and the jam ratio per sort are outputted on the cop sheet at a time. Thereby, which parts are troubled is confirmed in a short time, and the maintenance time of a serviceman can be saved.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to equipment capable of handling and processing images, such as copying machines (analog and digital) and facsimiles, and in particular,
The present invention relates to an information output device regarding its operating status (for example, jam occurrence status).

(Prior Art) In recent years, it has become common to store the operating status of a copying machine in a non-volatile memory within the machine and use it as reference data during maintenance of the machine.

In particular, the number of jams is memorized and is increasingly used when repairing copies. Unfortunately,
Even if the number of jams is displayed on the display of the operation panel in a special mode by a service person, the more jam categories there are, the more time it takes to display each category.

Additionally, high-end machines are equipped with data logging systems, which send data to a host computer based on the number of phone calls, etc., and print it out for confirmation. However, this method is complex and very expensive.

〔the purpose〕

The present invention was made based on this background,
The purpose of this is to output the number of jams or the ratio of jams for each category on a copy sheet at one time, making it possible to quickly confirm which parts are malfunctioning, and reducing service maintenance time. The goal is to reduce it.

〔composition〕

To this end, the present invention prepares a chart sheet that describes the jam mode items and can be used as transfer paper for the machine side, and transfers a solid image of a bar graph corresponding to the number of jams for each item onto this chart sheet. This is what I did.

Hereinafter, the present invention will be explained based on the drawings.

FIG. 1 is a diagram showing an image forming section of a copying machine.

The document 1 is placed on the contact glass 2, and the placement reference position is the abutment of the document scale 3.

When the print SW is pressed, the optical system turns on the exposure lamp 4 and begins to move to the right. During this time, an electric charge is applied to the photoreceptor drum 5 by the corona charger 6, but it is unnecessary! For the latent image before the ff position, the eraser 7, which is a charge erasing means located downstream of the optical path 6, is turned on, so the charge in the latent image area is erased, and the charge is erased by the developing section 8 located further downstream.
When the developing area starts to be exposed to light, there is a delay from the optical path to the erase position, and the eraser is not turned off and the charge is forcibly erased. The latent image remains on the surface and develops into a visible image. 9 is a cleaning unit, 10 is a paper feed cassette, 1
1 is a paper feed roller, 12 is a registration roller, 1) is a transfer roller 2
Separation charger, 14 is *a belt, □ 15 is a fixing roller, 16 is a paper discharge roller, and 17 is a paper discharge tray.

Now, in the present invention, a chart like that shown in FIG. 2 (bl) is used as the transfer paper. Note that (Jl) in the same figure shows the erase segment 7a. In the normal copy mode, the original image is naturally displayed on the chart 18. When the copying machine is set to the special mode of the present invention (hereinafter referred to as check mode), the copying machine executes a check mode routine.

The operation of the copying machine in check mode will be explained.

First, a check sheet (chart) 18, which is a document, is set at the document reference position 10. When the print switch is turned on, the scanner begins to move in the same way as a normal copy sequence. After the edge (lead edge) of the chart paper in the latent image on the drum passes the eraser 7, the eraser 7 is not forcibly turned off and the sheets are lined up at equal intervals.
Each of the zero erase segments 7a is selectively turned on or off to erase unnecessary image portions on the chart as latent images on the drum.

FIG. 3(b) shows an output example of the chart sheet obtained in this way. FIG. 3(a) shows an erase segment as in FIG. The registration sensor remains ON, the fixing sensor does not turn ON, and the sorter conveyance sensor remains ON...-1--
A bar graph-shaped solid image 18 that counts up the number of jams in each mode such as
A. That is, by looking at the discharged chart paper, the jam ratio for each mode can be seen at a glance.

The number of jams for each mode is stored in a nonvolatile memory.

Next, a method will be described in which the eraser 7 is selectively turned on and off depending on the contents of the non-volatile memory to obtain only the necessary images on the chart 18 as visible images.

The title of the jam mode and halftone dots that should become the bars of the bar graph are printed on the chart.

As shown in Fig. 4, depending on the jam mode item, if the segment 7a of the eraser 7 is turned off and on at the timing of the halftone pattern part that should become a bar of the bar graph, the unnecessary solid image part can be removed from the drum 5. Charges can be erased, and only the necessary solid image 5a can be obtained as a visible image. In FIG. 4, the eraser in the shaded area is turned off.

This erase range changes depending on the count value of each jam mode stored in the nonvolatile memory. For ease of comparison with FIG. 2, the time axis is shown in a two-dimensional manner as the paper feeding direction.

The copying machine control program contains an erase pattern as data to prevent the item from being erased.

The non-volatile memory is a RAM that stores the total number of jams as jam information.CJMT that stores the number of jams without the registration sensor ON.CTJAM that stores the number of times that the registration sensor remains ON.
BJAM CTCJA that remembers the number of times the fixing sensor is not turned on
M TDJA that remembers the number of times the fixing sensor remains ON
M Soak - Memorize the number of times the discharge sensor was not turned onC
TEJAM There is a CTFJAM that stores the number of times the sorter discharge sensor remains ON.

From this jam information, the ratio of the number of times the registration sensor is not turned on is determined by (CTAJAMxl 00)/CTJMT. This value is set to A because it is CTAJAM. Similarly, CTB
JAM is B, CTCJAM is C1 and below, D, E,
Let it be F.

The values from A to F are from 0 to 100. The erase segments of the chart items mentioned above are segment 0 to segment 50. This segment is turned off to prevent charge from being erased.

To express the value of A in a bar graph, erase segments from 50 to 50+A should be turned off, and to express the value of B in the same way, erase segments from 50 to 50+B should be turned off.Hereinafter, C2D, The same applies to E and F.

If the above erase data is output in order according to the amount of movement of the drum and the image is transferred to chart paper as transfer paper,
An image of the jam rate for each jam item is formed in the form of a bar graph in a direction perpendicular to the traveling direction of the chart paper.

FIG. 5 is a program flow diagram of erase control. PLSER is a counter that starts counting after the leading edge of the image passes through the eraser 7, and is incremented every time the drum clock pulse is generated as the drum 5 rotates.

This counter determines which portion of the latent image is currently passing through the eraser portion. Then, data is read from the nonvolatile memory according to the number of pulses of this counter, and the ratio is determined to create erase data.

FIG. 6 is an overall control block diagram, in which 20 is an optical controller, 21 is a DC motor, 22 is a sequence controller, 23 is a CPU, 24 is a non-volatile memory,
25 is ROM, 26 is latch IC of eraser 7, 27
28 is a drum clock, 28 is a print switch, and 29 is a jam detection sensor.

〔effect〕

As described above, according to the present invention, by outputting the number of jams or the ratio of jams for each category on a copy sheet, it is possible to confirm in a short time which part is malfunctioning, and to provide service. It is possible to reduce man's maintenance time.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the internal dark path of a copying machine to which the present invention is applied;
The figure shows the correspondence between the erase segment and the check sheet, (al is the erase segment), (b) is a diagram showing the check sheet, and FIG. 3 is a diagram showing the correspondence between the erase segment and the check after copying. (a) is an erase segment, (b) is a check sheet, FIG. 4 is a diagram showing the correspondence between the erase segment and the drum surface, FIG. 5 is a control flow chart, and FIG. 6 is a control block diagram. 7...Eraser, 18...Check sheet, 24
...Non-volatile memory. Procedural amendment N (voluntary)

Claims (3)

[Claims] (1) A nonvolatile memory that stores the number of jams according to the jam mode of the machine, a counting means that counts the number of jams according to the jam mode of the machine, and a machine-specific transfer paper that describes the jam mode items. A chart sheet that can be used as An information output device, such as a copying machine, characterized in that charges in an image area are erased by a charge eraser, and a latent image that is not erased is transferred to transfer paper as a visible image. (2) An information output device such as a copying machine according to claim (1), characterized in that a charge erasing means is controlled to express the number of jams in a bar graph. (3) Claim (1) characterized in that the charge erasing means is controlled to express the ratio of the number of jams in the jam mode divided by the total number of jams in a bar graph.
Information output devices such as copying machines as described in Section 1.