JPS61156149A - Copying machine - Google Patents

Abstract

PURPOSE:To discover an abnormal condition in an early stage, by providing a control means which cancels the preheating mode and shifts the operation mode to the waiting mode and, at the same time, displays the abnormal condi tion when the abnormal condition occurs during the preheating mode. CONSTITUTION:If a certain abnormal condition occurs during the preheating mode, a main body controlling section cancels the preheating mode and, at the same time displays the abnormal condition through an indicator 170 and jammed position monitor 195. The control section discriminates whether a preheating flag FPH is set or not (discrimination 26) and when the result of the discrimination 26 is 'yes', resets the preheating flag FPH and, at the same time, cancels the display of the preheating mode (process 27) by turning off an LED150. Then the control section sets the temperature of a fixing device to a fixing temperature and processes a cleaning blade against a photosensitive body and, furthermore, executes a preheating mode cancelling process 28 which restores the display of an operation displaying section 100b other than the preheating mode display.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a copying machine having a standby mode and a preheating mode.

[Prior Art] In recent years, copying machines equipped with a preheating mode in addition to a standby mode have been put into practical use in order to reduce power consumption during non-copying operations. In this preheating mode, power consumption is reduced by lowering the temperature of the fusing roller in the fusing unit and by turning off the display on the operation display unit, which forms the human interface between the operator and the copier. There is.

However, in such a copying machine, even if some abnormality occurs in the main body of the machine while the preheating mode is selected, the abnormality is not displayed, so the operator will not know about the abnormality until the preheating mode is canceled. Therefore, there was an inconvenience that the treatment for the abnormality was delayed. In particular, when an abnormality occurs that requires repair by a service person, there is a problem in that not only the copying machine cannot be used immediately, but also the abnormality becomes worse.

[Objective] The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a copying machine that can display abnormalities that occur during preheating mode.

[Configuration] In order to achieve this object, the present invention cancels the preheating mode and shifts to the standby mode when an abnormality occurs during the preheating mode, and displays the abnormality.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a copying machine according to an embodiment of the present invention. In this embodiment, the copying machine 100 includes an automatic document feeder 2.
00 and a paper collating device (hereinafter referred to as a sorter) 300.

In the copying machine 100, 101 is a contact glass on which a copy original is placed, and 102 is an optical system that scans the copy original on the contact glass 101. This optical system 102 scans the image of the copy original in a range of 50 to 141%. It has the ability to change the magnification to any desired magnification.

103 is a drum-shaped photoreceptor; 104 is a charger that uniformly charges the surface of the photoreceptor 103; 105 is an eraser for removing surface charges on the photoreceptor 103 in areas that do not correspond to the original image; The surface of 103 is optical system 1
02, and an electrostatic latent image corresponding to the original image is formed.

This electrostatic latent image is developed with toner by a developing device 106.

107 and 108 are paper feed cassettes that store different types of copy paper, and 109 and 110 are paper feed cassettes 1 and 109 and 110 respectively.
07. Paper feed roller that feeds copy paper from 108, 111
112 is a transfer charger for transferring the toner image on the photoreceptor 103 onto the copy paper, and 113 and 114 are for separating the copy paper from the photoreceptor 103. 115 is a conveyor belt that conveys the separated copy sheets, 116 is a fixing device that heats and presses the copy sheets to fix the toner image, and 117 is a conveyor that sends out the fixed copy sheets to the sorter 300 Laura, 118
1 is an ejection sensor that detects that copy paper is ejected;
A guide plate 19 guides the copy sheets to the sorter 300.

Further, 120 is a cleaner for removing residual toner on the surface of the photoreceptor 103, 121 is a static elimination lamp for removing residual charges on the surface of the photoreceptor 103, 122, 123, 12
4.degree. 125, 126 and 127 are guide plates for guiding the copy paper along the conveyance path, respectively.

Note that the automatic document feeder 200 and the sorter 300 are
Since it is not directly related to the present invention, a detailed explanation thereof will be omitted.

FIG. 2 shows the detailed structure of the cleaner 120.

In the figure, 120a is a pre-cleaning charger that eliminates residual toner, 120b is a fur brush that rotates in the same direction as the photoconductor 103 to remove foreign matter such as paper dust, and 120c is a fur brush that removes residual toner from the surface of the photoconductor 103. A cleaning blade 120d is a blade cleaner for removing dirt such as paper dust attached to the cleaning blade L20a.

Further, this cleaning blade 120C is used in the copying machine 10.
When the power is turned on at 0, pressure is applied to the photoreceptor 103 by a solenoid and a link mechanism (not shown), and when the power is turned off or in preheating mode, it is retracted in the direction of the arrow to the position shown by the broken line in the figure. Furthermore, during this evacuation, the tip of the cleaning blade 120C is attached to the blade cleaner 120d.
The cleaning blade 120c is scrubbed to remove dirt from the cleaning blade 120c.

FIG. 3 illustrates the control system of this embodiment.

In the figure, a main body control section 100a of a copying machine 100, a control section 200a of an automatic document feeder 200, and a sorter 3 are shown.
The control unit 300a of 00 includes a microprocessor, a ROM (read-only memory) that stores control programs corresponding to each device, and a RAM (random access memo) that serves as a work area and the like. It consists of input/output circuits, etc. that are compatible with these devices.

Main body control section 100a, control section 200a, and control section 30
0a exchanges status information and control information with each other, so that the main body control section 100a can learn of an abnormality that has occurred in the automatic document feeder W2O0 and the sorter 300. Further, the automatic document feeder 200 and the sorter 300 are set to an operation mode specified by the main body control section 100a, and
It operates in synchronization with the timing signal from.

The operation display section 100b also includes various input keys for inputting the operation mode of the copying machine 100, variable magnification, selection of paper cassette, designation of the number of copies, start of printing, etc.
Equipped with various indicators to display setting status, copy 4!
&100 is attached at an appropriate location on the top surface of the housing.

FIG. 4 shows an example of the operation display section 100b.

In the figure, 130 is a preheating mode key for selecting a preheating mode that lowers the temperature of the fixing device 116 and turns off the display on the operation display section 100b to reduce power consumption during standby; 131 is a preheating mode key for reducing the temperature of the copy document It is a blue erase key to remove borders.

When the blue erase key 131 is turned on to select the blue erase mode, the power supply voltage of the light source lamp in the optical system 102 is slightly increased, increasing the amount of light emitted, and thereby the blue ruled line disappears from the copied image.

132 is a print key for inputting a copy start instruction to the main body control unit 100a, 133 is a numeric keypad for inputting the number of copies, etc., 133g is a clear/stop key for canceling the input of the numeric keypad 133, and 134 is a split key. An interrupt key 135 is used to select the dark mode, a density decrease key 135 is used to reduce the copy density, and a density increase key 136 is used to increase the copy density. When the density decrease key 135 and the density increase key 136 are turned on once, the copy density changes by one step.

When the on state is maintained, the concentration changes by one step per unit time.

Reference numeral 137 is a paper feed selection key for switching the selection state of the paper feed cassettes 107 and 108, and each time this paper feed selection key 137 is turned on, the selection state of the paper feed cassettes 107 and 108 is switched.

138 is an original selection key for setting the copy original size, and each time this original selection key 138 is turned on, the set original size changes from A3 → B4 → ^4 → B5 → A5 → B
It changes cyclically like 6→A3→...

139 is the same-size key + for setting the copy magnification to the same size;
140 is a reduction key for setting a reduction copy mode and its magnification, and 141 is an enlargement key for setting an enlargement copy mode and its magnification. Reduce key 14
Each time 0 is turned on, the reduction ratio is 93% → 87% → 82% →
It changes cyclically as 71% → 61% → 50% → 93% →... Also, each time the enlargement key 141 is turned on, the enlargement ratio changes from 115% to 122% to 141%.
→115%→... It changes cyclically.

142 is a page continuous shooting key for selecting a page continuous shooting mode. In this page quick copy mode, the image of a copy original placed vertically on the contact glass 101 is
In this mode, the image is divided into two parts and each image is copied onto copy paper of a size smaller than the original size. Therefore, two sheets (two sets) of copy sheets on which different images are copied are obtained from one copy original.

143 is a stack key for selecting a stack mode of the sorter 300, and 144 is a sort key for selecting a sort mode of the sorter 300. Operation signals of these stack keys 143 and sort keys 144 are transmitted from the main body control unit 100a to the sorter. The operation mode of the sorter 300 is selected.

145 is a binding margin right selection key for setting the binding margin to the right, and 146 is a binding margin left selection key for setting the binding margin to the left. This binding margin determines the paper feeding timing of the registration roller 111. It is created by shifting the image back and forth from the state. In addition, when providing a regular binding margin,
A reduction rate of 93% is often set to prevent images from being missing. Further, the amount of binding margin is set using the numeric keypad 133.

147 is a zoom down key + that decreases the magnification ratio by 1%,
Reference numeral 148 is a zoom up key that increases the magnification ratio by 1%, and the zoom down key 147 and zoom up key 148 have the function of changing the magnification ratio by 1% every unit time when the zoom down key 147 and zoom up key 148 are kept on. ing.

In addition, a preheating mode key 130, a blue erase key 13
1. When the page continuous copy key 142, stack key 143, sort key 144, binding margin right selection key 145, and binding margin left selection key 146 are in the on state, one light emitting diode 150.
151, 152, 152, 154, 155 and 156
are displayed respectively. In addition, print key 13
2 has green and red light emitting diodes built into the key tops, which light up in green when printing is possible and red when printing is not possible.

By the way, although this copying machine 100 does not have a double-sided copying function, this operation display section 100b is used in common with a copying machine (not shown) that also has a double-sided copying function, so it is possible to set three types of duplex modes. A double-sided 1 key 161, a double-sided 2 key 162, and a double-sided 3 key 163 can also be provided.

When the double-sided l key 161 is turned on, the light emitting diode 164
lights up, and a duplex 1 mode is selected in which images of two originals (generally of the same size) with images formed on only one side are copied onto the front and back sides of a single sheet of copy paper. When the double-sided 2 key 162 is turned on, the light emitting diode 16
5 lights up, and duplex 2 copies the image of the original, which has images formed on both sides, onto both sides of a single sheet of copy paper.
mode is selected. When the duplex 3 key 163 is turned on, the light-emitting diode 166 lights up, and the image of a document placed vertically or an open book is divided into two, and each image is printed on the front and back sides of a sheet of copy paper. Three duplex modes for copying are selected.

In this embodiment, the unused portions corresponding to the duplex mode keys 161 to 163 and the light emitting diodes 164 to 166 are fitted with blind plates or the like.

An example of the display 170 is shown in FIG.

In the figure, reference numeral 171a denotes a set number display device that displays the number of copies set using the numeric keypad 133.

Reference numeral 171b is a copy number display that displays the number of copies. Note that when the numeric keypad 133 is operated with the binding margin right selection key 145 and the binding margin left selection key 146 turned on, the binding margin adjustment amount is displayed on the set sheet number display 171a.

172 is a service man call indicator;
6 temperature fuse or thermistor may be disconnected, or photoconductor 1 may be disconnected.
It lights up when it is determined that there is an abnormality in the self-diagnosis, such as when the drum check that is output with the rotation of 03 does not occur.

173 is an interrupt mode indicator that indicates that the interrupt mode has been selected; 174 is a max indicator that lights up when the amount set by the numeric keypad 133 exceeds the maximum value specific to the device.

Reference numeral 175 indicates a message display indicating that copying is possible. Reference numeral 176 indicates a message display indicating that copying is not possible because the apparatus is warming up or the variable magnification of the optical system 102 is being set. It is.

177 is a running indicator that lights up sequentially at a certain timing while the optical system 102 is in operation, and turns off completely when the optical system 102 returns to the home position; 178 indicates a density of 7;
It is a concentration display that displays in steps.

The display on the density display 178 corresponds to the density level set by the density decrease key 135 and density increase key 136.

179a is an oil end indicator, 179b is a toner end indicator, and 179c is an indicator that a jam has occurred in the main body or sorter, or in the main body and sorter, and that the door of the main body or sorter is open (non-sealed). This is a jam/door open indicator that shows when the door is open.

180a is an upper cassette remaining amount indicator that displays the remaining amount of paper in the upper paper cassette 107, 180b is a lower cassette remaining amount indicator that displays the remaining amount of paper in the lower paper cassette 108, and 180c is a paper feed selection key. This is a paper end indicator that indicates that the remaining amount of paper in the paper feed cassette selected in step 137 is "0".

181a is an upper cassette display that displays the paper size of the paper feed cassette 107, and 181b is a lower cassette display that displays the paper size of the paper feed cassette 108.

The selection state of the paper feed cassette by the paper feed selection key 137 is as follows:
This is done by showing the difference on each display. In addition, the display rR
J indicates vertical feed.

182, when the size standard mode, automatic paper feed selection mode, and document selection mode are set, and the selected paper cassette is not a standard cassette, but is a so-called universal type, the message ``Check paper'' is displayed blinking. 1. If the selected paper feed cassette is not the correct one, this is a message display that flashes a message "Confirm paper size direction".

183 displays "r magnification" when the magnification is set to 101-141%, displays "same magnification" when it is set to 100% (same magnification), and displays "same magnification" when it is set to 50-99%. This is a variable magnification mode indicator that displays "reduced" when the image is displayed.

In the automatic document feeder 200, 184a is an automatic paper feed selection mode indicator that indicates that the automatic paper feed selection mode has been set, and 184b is a size uniformity mode indicator that indicates that the size uniformity mode has been set. .

Reference numeral 185 indicates a document-paper combination that displays a standard combination of document size and paper size corresponding to the magnification ratio when the reduction key 140 or the enlargement key 141 is operated to set a magnification ratio other than the same magnification ratio. It is an indicator.

It is also possible to place the original directly on the contact glass 101 and move it to the original selection case 138 without using the automatic document feeder 200.
When turned on, the selected document size is displayed in the area surrounded by the square 185a, and the display in other areas of the document-paper combination display 185 is turned off.

Reference numeral 186a denotes a magnification ratio display that displays the set magnification ratio, and 186b represents a zoom mode display that displays that a magnification ratio other than the standard magnification ratio is set.

Each display of the display 170 is configured with, for example, a fluorescent display tube.

FIG. 6 shows details of the jam/door open indicator 179C. In the figure, when a jam occurs in the copying machine 100, segments SG1 and SG2 are displayed.
lights up, and when a jam occurs in the copying machine 100 and the sorter 300, segments SGI, SG2, and SG3 light up. When a jam occurs in the sorter 300, segments SG2 and SG3 light up, and there is no paper in the bin of the sorter 300. remains, only segment SG3 lights up.

Furthermore, when the door of the copying machine 100 is open or when the conveyance unit release lever double-sided conveyance section release knob is not set to the predetermined position, segment SG4 lights up, and when the door of the sorter 300 is open, Segment SG3. SG4 lights up.

Further, FIG. 7 shows a jam position monitor 19 for displaying the position where a jam occurs when a jam occurs in the copying machine 100.
5 is shown. This jam position monitor 195 is disposed at a location that is easily visible when the door of the copying machine 100 is opened.

In the figure, light emitting elements (e.g. light emitting diodes) A, B
, C, D, and E each indicate a predetermined position on the paper conveyance path inside the copying machine 100, and indicate the position where a jam has occurred. Further, the solid line portion and the broken line portion in the figure indicate the work of the jam position monitor 195 and the paper conveyance path.

With such a configuration, the main body control section 100a executes the routine shown in FIG. 8 in the standby state to set/cancel the preheating mode. Note that this routine
This is a part of the copying machine control main routine executed by 00a, and since the main body control unit 100a executes the main routine cyclically while the power is turned on, the routine shown in the figure is executed within a predetermined time (on the order of milliseconds). executed repeatedly.

First, if the preheating mode key 130 is not turned on (the result of judgment 11 is NO), the main body control unit 100a resets the preheating mode key set flag FKPH for determining the timing when the preheating mode key 130 is turned on. (
Process 12) immediately returns to the original routine.

When the preheating mode key 130 is turned on (result of judgment 11 is YES), it is determined whether or not the preheating mode key set flag FKPH is set (determination 13), and if it is not set (result of judgment 13 is NO) After setting the preheating mode key set flag FKPH (process 14), the preheating flag FP indicating that the preheating mode is in progress is set.
The state of H is determined (determination 15).

If the result of determination 15 is NO, that is, immediately after the preheating mode key 130 is turned on during the normal standby mode,
The preheating flag FP11 is set and the light emitting diode 150 is turned on to indicate the preheating mode (process 16), the temperature of the fixing device 116 is lowered by a predetermined value, the cleaning blade 120c is retracted from the photoreceptor 103, and further , executes preheating mode processing 17 for turning off the display on the operation display section toob other than the preheating display.

When the result of judgment 15 is YES, that is, when the preheating key 130 is turned on again while the preheating mode is set, the preheating flag FPH is reset and the light emitting diode 150 is turned off to cancel the preheating mode display. Process 18), return the temperature of the fixing device 116 to the fixing temperature, pressurize the cleaning blade 120c against the photoreceptor 103,
Furthermore, a preheating mode cancellation process 19 is executed to restore the display of the operation display section toob other than the preheating display.

Note that while the preheating mode key 130 is on, the result of judgment 13 is YES, so the process 14 and subsequent steps are not executed and the process immediately returns.

Furthermore, the main body control section 100a executes the routine shown in FIG. 9, and if any abnormality occurs during the preheating mode, it cancels the preheating mode and indicates the abnormality on the display 170 and the jam position monitor 195. Display in .

In other words, the main body control unit 100a determines whether the door is open or not based on the output of a door sensor (not shown) 20), and if the result of this determination 20 is YES, sets the door open flag FDDO (21). , if a jam has occurred (result of judgment 22 is YES)
) Set the jam display flag F I) J M and set the data of the light emitting element that lights up in the jam position monitor 195. Process 23) If the serviceman call status occurs (result of judgment 24 is YES), serviceman call display. A flag FDSM is set and display status data is also set (processing 25).

Then, it is determined whether the preheating flag FPH is set (determination 26), and the result of determination 26 is YES.
In this case, the preheating flag FPI+ is reset and the light emitting diode 50 is turned off to cancel the preheating mode display (27), the temperature of the fixing device 116 is set to the fixing temperature, and the cleaning blade 120c is applied to the photoreceptor 103. Then, a preheating mode canceling process 28 is executed to restore the display on the operation display section 100b other than the preheating display.

In addition, each of the above flags FDDO, FDJM, FDS
Each of M is passed to a control routine that lights up the display 170 of the main routine, and the corresponding display lights up. Similarly, the information is passed to a control routine that controls the lighting of the jam position monitor 195 and the serviceman call status display section (described later), and the corresponding light emitting elements and status are displayed6. The event that caused it 2
It is a digit number (for example, hexadecimal number), and is displayed on the set number display 171a when the serviceman call display 172 lights up.

Examples are shown in Table 1 below.

In this way, if any abnormality occurs in the copying machine 100, automatic document feeder 200, or sorter 300 during the preheating mode, the preheating mode is automatically canceled and the abnormality is displayed on the display 170. Therefore, the operator can immediately know about any abnormalities that occur in the equipment.

Note that, in the above, description of the copy control processing and the like executed by the main body control section 100a has been omitted for the sake of brevity.

[Effect] As explained above, according to the present invention, when an abnormality occurs during preheating mode, the preheating mode is canceled and the standby mode is entered, and the abnormality is displayed. An advantage is obtained that any abnormality that has occurred is displayed immediately, and the operator can discover such an abnormality at an early stage.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing a copying machine according to an embodiment of the present invention, FIG. 2 is a sectional view showing details of a cleaner, and FIG. 3 is a block diagram showing an example of a control system. Fig. 4 is a front view showing an example of the operation display section, Fig. 5 is a front view showing details of the display, Fig. 6 is a schematic diagram showing a specific example of the jam/door open indicator, and Fig. 7 is a front view showing the details of the display. A schematic diagram showing an example of a jam position monitor, FIG. 8 is a flowchart showing a control processing routine executed by the main body control section, and FIG. 9 is a flowchart showing another control processing routine executed by the main body control section. . 100... Copying machine, 100a... Main body control unit, 1
00b...Operation display section 170...Display device, 179c
... Jam/door open indicator, 195... Jam position monitor. Figure 6 y779c Figure 8 (7th (Processing) '$ 9 Figure - Processing 1)

Claims (1)

[Claims] A copying machine having a preheating mode and a standby mode, characterized in that the copying machine is equipped with a control means for canceling the preheating mode, shifting to the standby mode, and displaying the abnormality when an abnormality occurs during the preheating mode. Machine.