JPH0430181A - image forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus such as a copying machine or a printer, and particularly to an image forming apparatus characterized by a selection display of paper feeding means.

[Conventional technology]

Copying machines are generally equipped with multiple paper feed cassettes or paper feed trays, each containing a dedicated size and type of transfer paper, and it is possible to select the cassette or tray containing the desired transfer paper to make copies. It looks like this. The currently selected cassette or tray is displayed on the display section by lighting or blinking.

In addition, as a conventional example regarding the selection of paper feed section,
Examples include JP-A No. 1-68048, JP-A-62-161647, and JP-A-63-100739.

On the other hand, there is a function that allows you to copy the first page, the last page, or both the first and last pages of the original onto application paper (cardboard, color paper, etc.) and staple it for simple bookbinding ( (hereinafter referred to as display mode) is becoming popular in copying machines.

[Problem to be solved by the invention]

In order to execute the above-mentioned cover mode, it is necessary to install a cover copy paper feed section containing application paper and a normal copy paper feed section into the main body of the device.
As mentioned above, in conventional devices, the currently selected paper source is only displayed by its placement stage position or transfer paper size, so the paper source for cover copying is not attached to the main body of the device. There was a problem in that it was not possible to check from the display whether the device was attached or not.

Furthermore, if the attachment of the paper feed unit for cover copying is indicated by special means, there are disadvantages in that it will lead to an increase in cost and the display contents will become complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus capable of copying in cover mode, in which the installation state of a paper feed unit for cover copying can be confirmed from a display unit without increasing costs.

[Means to solve the problem]

The above purpose is to provide a plurality of paper feeding means provided in the main body of the apparatus,
It has a detection means for detecting the size and type of transfer paper stored in each of the plurality of paper feed means, and a display means for displaying which of the plurality of paper feed means is selected, and When copying the first or last sheet, or the first and last sheets of a document, the image forming apparatus executes a cover mode in which paper is fed from a different paper feeding means than when copying other documents. This is achieved by including a control means that displays the cover copy paper feeding means in the cover mode by lighting or blinking one of the display means.

[Effect]

When the cover mode is selected, the control means lights up or blinks a part of the display means for displaying the selected paper feeding means, and lights up or blinks all of the display means to display the selected paper feeding means. This is used to determine whether the cover copy paper feeding means is installed.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 is a schematic diagram of the entire copying machine. 1 is ADF
When a document is placed on the document tray 2 using the auto document feeder (auto document feeder), the document is conveyed one by one onto the contact glass in synchronization with the copying operation, and when the exposure is completed, the document is transferred to the document output section of the ADFI. to be discharged. 3 is a manual feed table, which is used when copying in the middle of continuous copying or when copying onto special size transfer paper. Paper feed cassettes 4 to 7 are respectively set in the paper feed opening of the copying machine. 8 is an electrostatic charger, 9
10 is a photosensitive drum, 10 is a developing unit, 11 is a transfer charger, 12 is a separation charger, and 13 is a cleaning unit. A sorter 14 moves the tray up and down in accordance with a preset discharge mode (sort/stack) to stock the copied sheets when the copied sheets are discharged from the copying machine.

Image forming conditions such as the number of copies, image density, paper size, and magnification, as well as operation modes such as duplex mode, sort/stack mode, and cover mode, are set from the operation unit (not shown).
Based on these conditions, a copy operation is started by a copy start signal. By moving the scanner of the optical system, the document on the contact glass is exposed to light, and the reflected light is projected onto the photosensitive drum 9. Around the drum, as mentioned above, there are a charging charger 8, a developing unit) 10, and a transfer charger 11.
, a separation charger 12, and a cleaning unit 13 are arranged, and a toner image formed by a well-known process is
The image is transferred onto a transfer sheet fed from one of the paper feed cassettes 4 to 7 or the manual feed table 3. The toner remaining on the photosensitive drum 9 is then collected by the cleaning unit 13.

FIG. 1 is a control block diagram of the entire copying machine according to an embodiment of the present invention.

From the main control circuit (CPU (1)) 20, a solenoid 22, a clutch 23, a motor 24 via a servo control unit 25, a heater 26 via a heater control unit 27, and a charger 8, 11° via a high voltage power supply 28. 12. Signals are output to the lamp 29 and the electromagnetic counter 32 via the lamp regulator 30 at respective control timings. sensor 3
1 receives detection signals such as paper end detection, paper size detection, jam detection, door opening/closing detection, etc., and controls the operation of the copying machine based on these signals. A program for controlling these inputs and outputs is written in the ROM 34, and the main control circuit 20 operates according to this program. A non-volatile memory (RAM) 33 stores condition data for copying operations (exposure lamp voltage, fixing temperature setting, paper feed timing data, etc.), data such as the total number of copies, the number of jams, and the like. 4o is the operation control unit, which has a display system! Circuit (CPU
(2)] 41 communicates data and signals with the main control circuit 20 to control the display and key manual operations. 42 is the input key, 143 is the LED display for mode setting, 44 is the log-7? Pull ROM, 45.46 is LCD driver, 47
is a liquid crystal display (display means) that displays various guidance and copy operation details.

Note that 21 is a power supply unit.

FIG. 3 is a schematic flow diagram of the entire copying operation.

When the power is turned on, the CPU (1)
Based on the program written in the CPU (
1) Initialize (setting input/output ports, setting initial values for each parameter, setting various timers, setting interrupt mode, etc.) (step Sl), and then
After clearing the contents of 35 (step S2), the contents of the nonvolatile memory 33 related to the copying operation, such as lamp voltage setting values and bias voltage setting values, are cleared by R.
AM35 (step S3). Furthermore, mechanically initialize the optical system scanner, etc. (step S
4) When the fixing temperature reaches a predetermined temperature (reload) (YES in step S5), the machine enters a standby state (step S6)
Then, the copying operation is started by the copy start signal (YES in step S7) (step S8), and if the predetermined number of copies is completed (YES in step S9),
It becomes a standby state again (step S6).

FIG. 4 shows a liquid crystal display 47 in the operation section of this copying machine.
Indicates the fully lit state. The liquid crystal display 47 includes a dot matrix display section 62 and a numerical value and symbol (fixed pattern) display section 63.

The dot matrix display unit 62 is a guidance display liquid crystal display device configured to display characters in a 5×10 dot matrix, and capable of displaying up to 40 numbers, alphabets, katakana, symbols, and other arbitrary characters. The fixed pattern display section 63 also includes a segment display 64 that displays the copy magnification as a 3-digit number, a segment display 65 that displays the number of copies, etc. as a 3-digit number, and the size of the transfer paper in each paper feed cassette. , a symbol display 66 that displays the orientation, remaining amount, and selection of paper feed cassette using a frame display, and a symbol display 67 that indicates various abnormalities and warnings.
, a symbol display 68 that displays a ready display, a symbol display 69 that displays a wait, a symbol display 70 that displays copy density, a symbol display 71 that displays a serviceman call, a display of the position where a jam has occurred, and the presence or absence of each peripheral device. It includes a symbol display 72 and the like for displaying information and indicating the presence or absence of the paper feed cassette.

5 and 6 are explanatory views showing the display contents of the liquid crystal display 47 during standby and when the cover mode is selected. In the standby mode shown in FIG. 5, the A4 vertical feeding paper feed cassette is selected. This is indicated by lighting up the upper frame 66a and the lower frame 66b.

On the other hand, as shown in FIG. 6, during cover mode copying, the upper A4 size paper cassette selected for normal copying is displayed by lighting the upper frame 66a and lower frame 66b.
A cover copy paper feed unit (paper feed cassette) in which application paper is stored is displayed with a lit lower frame 66b.

That is, when the lower frame 66b is lit (or blinks), the operator can visually determine that the cover copy paper feed section is attached to the main body of the apparatus. Therefore, without actually checking each paper source,
Cover copy mode can be executed immediately.

Note that the detection means for the paper feed section in which normal transfer paper is stored and the paper feed section in which application paper is stored are represented by a sensor 31 in FIG.

FIGS. 7 and 8 are flowcharts of the control contents according to the present invention. In the blue routine shown in FIG. 7 for selecting and displaying the paper feed section, it is first determined whether or not the cover mode is selected. (Y in Sl), the lower frame 66b is illuminated as shown in FIG. 6, thereby lighting up the cover copy paper feed section (S2). If it is not the cover mode (N in Sl), the cover copy paper feed section is not lit (S3).

In addition, in the paper feed section selection control subroutine in the cover mode shown in FIG. 8, first, in the cover mode (Y in S4),
It is determined whether it is the first or last sheet of the original, and if so (Y in S5 and S6), the paper source for cover copying is selected and paper is fed (37), even if it is the first sheet of the original. , or if it is not the last sheet (N in S5 and S6),
Since the copy is not a cover, the normal copy paper feed unit is selected and paper is fed (S8).

〔Effect of the invention〕

As explained above, according to the present invention, in the conventional display means in which the paper feed section for normal copying is selectively displayed by all lighting or all flashing, the paper feeding section for cover copying is displayed by partially lighting or blinking. Since the installation is indicated by blinking, it is possible to check whether the cover copy paper feed unit is installed without providing a special means for indicating that the paper feed unit is installed, and it is easy to use.

[Brief explanation of drawings]

Fig. 1 is a control block diagram of the entire copying machine according to an embodiment of the present invention, Fig. 2 is a block diagram of the entire copying machine, Fig. 3 is a flowchart of the copying operation, and Fig. 4 is the liquid crystal display of the operation section. FIGS. 5 and 6 are illustrations of the lighting states of the liquid crystal display during standby and cover mode, and FIGS. 7 and 8 are illustrations of the cover according to an embodiment of the present invention. 7 is a flowchart showing the content of paper feed section display and paper feed section selection in mode. 4.5, 6.7...Paper feed cassette (paper feed means), 20
... Main control circuit (control means), 31 ... Sensor (detection means), 41 ... Display control circuit (control means), 66
...Symbol display device (display means). Diagram ~ Diagram

Claims (1)

[Claims] A plurality of paper feeding means provided in the main body of the apparatus, a detection means for detecting the size and type of transfer paper stored in each of the plurality of paper feeding means, and a detection means that detects which of the plurality of paper feeding means is selected. and a display means for displaying one of the manuscripts.
In an image forming apparatus that executes a cover mode in which paper is fed from a different paper feeding means from that used when copying other originals when copying the first or last sheet, or the first and last sheets of an original, An image forming apparatus characterized by comprising a control means for displaying a paper feed means for cover copying in a cover mode by lighting or blinking a part of the display means.