JPS60114881A - Picture processing device - Google Patents

Abstract

PURPOSE:To reduce maintenance and inspection processings of an operator to perform processings quickly and properly by discriminating normality or abnormality of the copying operation state during lighting or extinction of an exposure lamp with a density signal of a density detecting means. CONSTITUTION:It is discriminated whether a lamp 104 for original exposure is lit or not (1), and it is discriminated whether an original front end detection signal DTP is inputted or not (2) if the lamp 104 is lit, and it is discriminated whether a low-level voltage is applied to a light receiving sensor 121 or not (3) if the signal DTP is inputted, and stop control is started simultaneously with displaying of contents of troubles on a display device and the copying operation is stopped to return the control to a main toutine (4) if the voltage is not applied. Meanwhile, if the lamp 104 for original exposure is not lit in the step (1), it is discriminated whether the applied voltage of the light receiving sensor 121 is >=4V or not (5), and the control is jumped to the step (4) if it is not >=4V, but the control is returned to the main routine immediately if it is >=4V.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image processing apparatus that detects the density of a document surface and forms an i(+Y: bright image).

[Prior art and its problems]

In recent years, there has been a gradual increase in the number of image processing devices equipped with 5 functions that automatically adjust the density by detecting the original 4 scale and controlling the exposure lamp light, 1, and developing bias, etc. be. However, since the objects to be controlled are heated exposure lamps, fixing heaters, etc., once a trouble occurs for some reason and the 1ilj control operation is not performed normally, this poses a serious safety problem. Conventionally, when the above-mentioned draft occurs, small steps have been processed depending on the operator's judgment. For this reason, an unusual load is applied to the exposure lamp, which not only affects the life of the lamp but also has drawbacks such as unavoidable secondary effects on IC components and the like.

[Purpose of the invention]

This invention has been made to eliminate the above-mentioned drawbacks, and troubles can be avoided by determining whether the copying operation is normal or abnormal when the % light lamp is on or off, based on the density signal of the density detection means. The copying operation is displayed and the copying operation is stopped in the event of an abnormality. This description will be explained below.

[''A Flowing side Figure 1 is a schematic cross-sectional view showing an example of a single-axis image storage J! Ifi intake according to the present invention, Figure 8+!2 is a front view of the operation panel, and Figure 3 is a control rotation diagram. It is a diagram.

In the fA1 diagram, 101 is the main body, 102 is the document table cover, 103 is the operation unit, Jg, and gantry, 104 is the document exposure lamp, 105a to 105d are reflective mirrors, 106
is a zoom lens for variable magnification, 1o1 is a fan for heat exhaustion, 10
8 is a photosensitive drum, 109 is a cleaner, 110 is a charger,
111 is a crank exposure lamp, 112 is a current weapon, 113
114 is a paper feed cassette, 114 is a transfer roller, 115 is a transfer roller, 116 is a transport Q-ra, 111 is a fixing device, 11
8 is a copy tray, 119 is an image front sensor, 12o is a registrar, 121 is a light receiving sensor, 122 is a power switch, and 123 is a home position sensor.

The copying process of this copier is not much different from conventional machines, so
The details are omitted.

On the operation panel shown in Figure 2, 201 is the copy start key, 2o2 is the clear/stop key, 203 is the numeric keypad for setting the number of copies, and 2o4 is for indicating the status of the copying machine, such as jam, missing, toner supply, control counter inspection, etc. 205 is a display that also displays the number of copies at 1 magnification and an error display, 206 is an automatic 7-hand mJ coffee ei display.
K,,l@11ij switching key, 207 is a copy density lever, 208 is a copying function f111 normal lever for pressing the appropriate position of the copy/Z-207, 209
is the same magnification reproduction mode 1-1 and is used to select the desired magnification mode. 210 is a variable magnification copy mode selection key, and 211 is a copy magnification display key. When pressed, -1" 2 ' (?i) of the selected magnification is displayed on the display 205. 212 to 215 are fixed copy magnifications. The mode indicator 216 is a stepless copying magnification mode indicator.By repeatedly pressing the variable magnification copying mode selection key 210, that is, in response to the presses, the magnification mode indicator 216 changes from 212 to 213, 214, etc.
215. By switching to 216, the 1-hour rate mode of residence can be selected. The variable size copy mode selection key 210 may be provided with an auto-repeat function so that the display changes while it is pressed.

211 is a stepless variable power lever that allows you to select the variable power.
8 is a magnification scale, which corresponds to the position of the stepless magnification lever 2110. 219 is a main/wait indicator, which blinks during wait and lights up during standby. 220 is an automatic density adjustment mode indicator, and 221 is a manual density adjustment mode indicator.

In the fu control circuit diagram shown in Figure 1A3, 301, 302 and 303 are one-chip microcomputers (hereinafter referred to as MP), MP301 and 302 are for DC controller control, and especially MP301 is for operating keys such as human power 2 on the operating section (
g processing is performed, and the MP 302 performs copy-like sequence 1 release control. MP303 controls the DC motor. P A O in each MP.

1) A I, . . . are input or output ports, RES II:T is a reset terminal, and lNTl is an interrupt input terminal.

Next, regarding the 4u that is input to or output from each boat, r
Let me explain briefly. ZC10 Ura Zero Cross Kouchi 4s issue,
MR8T is the main motor reset control signal, II'l
'l' is the main heater control signal, H'l'2 is the sub-heater control number, BS is the dual adjustment output iti number that controls the developing bias, ssi> is the printer set signal,
SST is the sorter standby signal, DTP is the cooling 4t16 tip detection signal, fJP is the paper feed no detection signal, LP is the main block phase control loop No. 1, and 'll'JI is the temperature of the heater thermistor. Detection m number, LMON is the di source lamp monitor signal, T It E S T is the toner presence/absence detection signal, DNAE is the original 471-year-old detection number of the copy M
, D N V It 1 .

DNVR2 indicates the status of manual copy once lever 207 and copy density auxiliary lever 208, respectively.
NZM indicates the status of the stepless variable magnification lever 4F4 ”j
.

K EY indicates the state during key manual or bale adjustment.
Signal, DSP is the number to the display, vl is the toner remaining detection voltage υ9, MP 302's Z M HP is the zoom lens home position detection number 11, 1JscH, j & 1J
) 1 Paper jam detection No. d, S P RJ: Separation jam detection No. 1, HP: Document platen home position detection No.
Bone, STJ are Sorta Jam Kochigo, ZMI, 2M2, No. 44 and CNT, respectively, which indicate the position of the zoom lens.
is the number of sheets counter, OP B R is Moto Gakuito (Hara fi1
If T S
H is ON10 F F control (No. 4, T
14 MIN is No. 18 for manually inputting the thermistor disconnection into memory, BL is the blank exposure side gl (bar 1.0 PBF is a signal that instructs the optical system to move forward or backward, 0 PCL is the ON / OFF control of the movement of the optical system. signal,
It E G is registration roller control No. 48, FDP is paper feed timing 1ν1j control (s S, M M S Y C
In synchronization with the main motor, the fan, # of the separation belt part, electro-image pre-exposure control (No. 74, SQL is the lower paper feed solenoid control No. 4a degree, BS CL is the developing bias 0N10FF: M1j control signal , JIVT is the AM pressure power supply control number M, DCK is the drum clock, THMOUT is the signal that outputs thermistor disconnection from the memory, TCNT is the total counter abnormality detection number 4d, ILEGADJ is the registration timing ali adjustment signal, and LAL is the LED array control. Signal, MP303's 01JUN is the optical system drive motor, brake, forward, backward, 0N10FF control abnormality diagnostic signal, FS is the magnification reference frequency, MCU T
is the abnormal motor stop + ij number, OPM is the optical motor control reference signal for creating the pulse speed 1 control (fi number FV), DRM is the drive motor control im number, and FV is the constant width pulse speed le U control signal. , PC is the phase-based tMJ signal, O
PMON is the optical motor JIJ monitor type b, FG is the optical motor encoder (fi, LCKP is the ρ phase display signal, and OPF is the optical motor filter switching (U, a).
S T 1 to 3 are reset signals for MP301 to 303, respectively, S is a serial communication output, SO is a serial communication time output, f3 CK is a clock for serial communication, and 5P
ELL is a serial communication permission signal, and SLEDY is a serial communication recipient signal. , and CLKl~3 are each A
l1) 301-3030 standard tarokku.

Next, the control of the heat sources of the fixing device 111 and the document exposure unit 104 will be explained with reference to the drawings.

When the kfs source switch 122 shown in FIG. 1 is turned on, temperature control in the fixing device 111 is started.
When the temperature rises to a certain level, the warm-up is completed and the copying mode is enabled. In this copy waiting state ν9, the original music exposure lamp 104 is off, and it is determined that the light receiving sensor 121 is in a state (normal) where a voltage of IIGH level (4 to 5 V) is applied. If the light receiving sensor 121
If a voltage of LOW level (4 V or less) is applied to the source (&4), it can be determined that the light receiving sensor 121 is defective or a trouble has occurred in the driver circuit of the document exposure lamp 104. And the voltage level L
Publication by OW or HIG 11 - 1 result displayed on display 2
05 as whether or not there is a problem, and this is displayed on MP301.
to MP303, and from MP303 0N10F F
Control No. 8 H'[''S H controls the driver of the exposure lamp 104 of Ryo 8i.

Next, the control operation when the copy start key 201 is pressed to start copying from the copy position +M after the t7 ohm amplifier will be described with reference to the timing chart of FIG. In addition, (a) to (h) are for each system #
Represents the timing of an action.

(a) With the variable power zoom lens 106 set to the home position KA positive, copy start key 2 is pressed.
When 01 is pressed (b) and copying starts, paper feeding starts (C), and after a certain period of time, the document exposure plate 104 lights up (d), and the operation unit and document table 103 move to remove the original. ('(Scanning of 4 sides starts (e) 6 timing (e) During scanning, the leading edge of the document is detected from the light receiving sensor 121 provided on the variable magnification zoom lens 106 No. 14 1) TP
is done manually (f).

However, since the operation unit and the document table 1u3 are provided with a zero for forming a copy image trap leading edge margin, the light receiving sensor 121 is in the LOW state at the timing (f) when the document leading edge detection signal DTP is input. (Q in a state (normal) where a voltage of 2V or less is input). Displayed during this time! a205 displays the number N of copies. However, for some reason, this LOW level voltage is applied to the light receiving sensor 121.
If it is not noticed, it is determined that there is an abnormality in the light receiving sensor 121 or original exposure lamp 104, and the
Display the details of the trouble in 5) and stop the copying operation. Note that in FIG. 4, dotted lines indicate normal operation.

Next, the stop control operation due to trouble will be explained with reference to the flowchart in FIG. Note that the flow is read out by the CALL command of the main program and the program is executed at will. Further, (1) to (5) represent each step.

The flow shown in FIG. 5 starts when the copy start key 201 is pressed.
04 is lit (1), if YES, it is determined whether the document leading edge detection signal DTP is input, f21, Yl (if S, the light receiving sensor 121 is LOW)
level voltage is applied [3)
, if NO, the contents of the trouble are displayed on the display 205, and at the same time stop control is started to stop the copy operation (return to the main routine (4)).

On the other hand, if the document exposure lamp 104 is not lit in step (11), check whether the voltage applied to the light receiving sensor 121 is 4V or higher (1m and 5); if No, jump to step (4); if YES, proceed to step (4); If so, immediately return to the main routine.

〔Effect of the invention〕

As explained above, in this invention, the copying operation state j, ! is determined by the density signal of the density detection means at the start of copying. 4 is detected and the operation is stopped when an abnormality occurs, so maintenance and inspection processing by the operator? : It is possible to reduce the amount of damage, and to perform the treatment quickly and appropriately, and the life of the exposure lamp and equipment can be greatly extended. In addition, 4 (for fires, etc.)
This has the advantage of being able to prevent accidents from occurring.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing one embodiment of an image processing apparatus according to the present invention, FIG. 2 is a front view of the operation panel, FIG. 3 is a control circuit diagram, and FIGS. 4 and 5 are explanations of the operation. These are a time chart and a two-chart. In the figure, 101 is the main body, 102 is a manuscript table cover, 103 is an operation part and a manuscript table, 104 is a lamp for lighting, 10
8 is a photosensitive drum, 113 is a feeding center, 119 is an image tip sensor, 123 is a home position/sensor, 201 is a copy start-t--1202 is a clear/stop key, 203 is a numeric keypad, 204 and 205 are indicators, 206
is automatic/hand! IIh Copy once adjust FA (!A flat key 2
01 is copy + CL tK lever, 208 is copy g1
1 degree 111 positive lever, 209 is life-size role photo mode key,
210 is a variable magnification copy mode selection key, 211 is a copy magnification key, 212 to 215 are fixed copy magnification mode indicators,
216 is a stepless copy magnification mode indicator, 211 is a stepless magnification lever, 218 is a magnification scale, 219 is a main/weight indicator, and 301 to 303 are MP and PAO. PA2.・・・・・・is manual power or output port, IT
E S +; T is a recent terminal, and lNTl is an interrupter camera.

Claims (1)

[Scope of Claims] It has a density detection means for detecting the original lll1 density, and itl! 1 In the image processing apparatus that performs
An image processing device characterized in that it is provided with a control means for detecting a failure based on a V-report and overturning stop control.