JPS58220033A - Record paper feed selecting method - Google Patents

Abstract

PURPOSE:To improve possibility of random selection of paper feeder by detecting the existance of record paper sheets when a power switch is turned ot ON, and selecting the storing site of said paper feeder which is the highest in the predetermined order of priority based on the signal of the detected data, and feeding said paper feeder. CONSTITUTION:When a copying machine body 1 is loaded with cassettes 2-5 in the order of priority, the existance of record paper sheets in each of the cassettes 2-5 is detected through no-paper microswitches MS1-MS4 and the detected data are written in the memory of a microcomputer 21. When a cassette selecting button 14 is pressed under this condition and then a copying button 13 is turned to ON, one of feed paper rollers 2a-5a is operated, corresponding to the required cassette based on the data of the order of priority stored in the memory of the microcomputer 21; e.g., if the cassettes 2 and 3 contain no paper sheet while the cassette 4 contains paper sheets, the feed paper roller 4a for the cassette 4 is operated, thereby starting to feed paper sheets.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for storing recording paper of different sizes in an electrostatic recording device such as an electrophotographic copying machine. A paper feed cassette containing several paper feed cassettes is loaded in the device K, and the user can manually select the desired paper feed cassette (hereinafter simply referred to as a cassette) according to the document size and record. 6
゜In some electrostatic recording devices mentioned above, a selection button for selecting a cassette is provided for each loaded cassette, but due to the recent trend toward miniaturization of devices, a selection button is provided in order to minimize the space of the operation section. The T6 method is adopted, instead of providing each cassette, the selected cassettes are switched in sequence each time a selection button is pressed, and at the same time the recording paper size in the selected cassette is displayed each time.

Incidentally, in so-called high-end recording devices, there is a tendency for a large number of cassettes to be loaded into the device; for example, a device loaded with four types of cassettes is in development. For such types of recording devices that use a single selection button to select a cassette, when the IIA power switch is turned on, the topmost cassette is selected and its display appears on the first row. For example, in order to properly translate the bottom cassette, you would have to press the selection button three times.However, with conventional recording devices that use this paper source selection method, there is no recording paper in the cassette. Even in this case, the cassette selection operation and display of the selected cassette are performed in the same way as when there is no recording paper in the cassette.6 Therefore, if the cassette is in the upper row of -11 or has a higher priority, there is no recording paper in it. is also selected, the operation section displays a paper out display or a flash, prompting the user to change the cassette.Therefore, the same number of selection button operations will result in no paper being displayed for all cassettes. It's no different than if you were there.

However, in such a case, it is desirable to reduce the number of operations as much as possible to simplify the operation of properly translating the recording paper, and the present invention was made from this point of view. In the recording device, when the power switch is turned on or when the meter reset is activated, the cassette selection operation is simplified when there is no recording paper stored in one of the cassettes. Then, the 6 cassettes with no recording paper are selected in descending order of selection priority.

The present invention will be explained below based on the drawings.

FIG. 1 shows an example in which the recording paper feed selection method according to the present invention is applied to an electronic printer with a normal configuration. irradiate 1
The museum is equipped with a series of well-known electronic devices, including an optical system, forming an electrostatic latent image of a manuscript, and printing a toy. However, only the main parts of the paper feeding device necessary for explaining the method of the present invention are shown in the figure.

In the illustrated example, four cassettes (1-J, 2, 3, 4, 5) containing recording paper of different sizes are loaded in the designated position of the copying machine, and each cassette has the highest First paper feed roller 2 a + 3 a 14 in contact with the upper paper 6
A + 5 a is provided, and the top paper is fed from the selected cassette by the first paper feed rollers in synchronization with the recording operation. The paper is conveyed to the transfer position 21. by the second paper feed roller 6 in precise synchronization with the recording operation. There, the nJ visual image on the photoconductor is transferred. After the transfer, the recording paper is separated from the photoreceptor, fixed by a fixing device, and discharged.

By the way, when the power switch of the copying machine is turned on, according to the flowchart 1 shown in Fig. 2 (a), each cassette is checked by the no-paper micro switches fMs+ to MS4 to determine whether or not there is recording paper in the cassette. 6° no paper micro switch MS! ~MS4 outputs a 'H (Hlgh)' signal when there is recording paper in it, and outputs 'L (Low Y number') when the recording paper is empty and the recording paper is empty. Suppose that cassette 2, cassette 3, cassette 4, and cassette 5 are determined in descending order of priority.No paper microswitch No. If there is a person present, the information of "F priority 1" is written to the memory of the microcomputer 21. However, if there is no recording paper or person in cassette 2, then the next time there is a recording paper in cassette 3, which has priority 2. It determines whether there is a dolphin or a house, and if there is a person, it writes information with priority 2J to the memory of the microcomputer 21. In the same way, it writes recording paper or people to cassette 4 with priority 3 and cassette 5 with priority 4. Determine whether or not there is.

As a result, any one of the information in priority order] to 4 is written into the memory of the microcomputer 21. Now, for example, if there is recording paper in cassette 2.3 with priority 1.2, there is one recording paper in cassette 4 with priority 3, and ``priority 3'' is written into memory. 1st. As a result, the 16-power set display lamp 12c notifying the selection of the third cassette from the top changes to A1.

Next, operate the selection button 14 (see Figure 1)'1
The operation progresses as shown in Figure 2 (B). 1)
When the cassette selection button 14 is operated, the priority order IKN is determined by the operation explained with reference to FIG. 2 (a) in 1.
If it is set to priority 2, set it to priority 3, if it is set to priority 3, set it to priority 4r (: 191'16゜ then press the copy button. 13, the first paper feed roller of the corresponding T6 cassette is driven to feed the recording paper based on the priority information stored in the memory of the microcomputer 21, as shown in FIG. 11 Now. For example, as described above, the priority information written in IF is set to "Priority 3" and 1B, and the first@paper roller 4sf of the cassette 4 is driven. Feed the topmost paper.

When the second source switch is turned on in this way, initial b' is set to cassette 4, which has a predetermined high priority, excluding cassettes 2 and 3, which are empty of the four cassettes 2P-5. Since the number of cassettes 5 is changed to 6, the operation for selecting the desired cassette 5 can be made by simply pressing the cassette trace button once, making it extremely simple.

In the above embodiment, the priority order of the cassettes is determined sequentially from the upper cassette to 1, 2, 3, 4, but the present invention is not limited to dirt. Alternatively, it may be determined based on the frequency of use depending on the size. Furthermore, this priority can be decided by the manufacturer of the recording device when designing the circuit, or by the user or service person. It can also be applied to recording paper mounted type recording devices, in which case it is better to use a recording paper detection sensor installed in the place where the recording paper is stored. , If the next recording cycle does not start within a certain period of time after one recording cycle, the recording conditions set by the previous user (for example, 1i171 image leakage, set number of recording sheets, reduction or enlargement magnification) The recording paper according to the present invention, in=n=method, is an auto-reset mechanism that is usually used most secretly and forcibly sets the recording paper to the condition of 1. It may be applied when the is activated.

As explained above, the present invention provides a recording paper selection method in an electrostatic recording apparatus in which one of recording papers with different glazes is sequentially switched and selected by a single selection button. When the power switch is turned on after detecting no sound, the recording paper is selected from among the recording paper stacking sections with predetermined priorities for each position of the cassette or cassette. Even if there are a large number of paper sheets and the accompanying number of paper sheets, you can easily and quickly select the paper sheet with the highest priority when starting the recording operation from the loading section without any paper paper. #
I'm sorry. In an electrostatic recording device that has a meter reset function, it is easy to select the recording paper when the auto-reset mechanism is activated, and in this case, it is easy to select the recording paper, and in this case, it is necessary to set the recording density, the number of sheets, and the magnification ratio such as reduction and enlargement. The ease of selecting the recording paper source improves usability by 16°, since it is no longer necessary to set other recording conditions.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of an electronic digital phototransporter that employs a recording paper selection operation according to the present invention and a recording paper selection control N path, and FIG. 2 is a flowchart explaining the operation of the selection method according to the present invention. (b) is a flowchart of the priority setting operation related to the recording paper selection operation; (c) is the paper feed motor 3 is a flowchart illustrating the operation in relation to priorities. 1... Subject body, 2, 3.4.5... Cassette,
2 a + 3 a + 4 a + 5 a... 1st paper feed roller, 6... Square-2 paper feed roller, 12C...
・Cassette display ramp,】3...Scroll button, 2】・
・・Microcomputer ~MS+-M84・・・Recording paper presence/absence detection micro switch special r1 Author: Roku Konishi: J14]-Gyo Co., Ltd. agent Patent attorney Hiroshi Suzuki Male Figure 2 (4) Figure 2 (B)

Claims (4)

[Claims] (1) Recording paper of a recording device in which 1 liter of 6 different types of recording paper is placed on the recording string holding part of the decimal number, and the selection is made by sequentially switching with one selection button. In the paper feed selection method, when the WL source switch is turned on, the presence or absence of recording paper is detected, and a predetermined high-priority recording paper loading section is selected based on the detection signal, so that the paper does not end up as shown in 6. Paper feed selection method for '16 recording paper. (2) The recording device is provided with a meter reset mechanism, 1
11th Era J-) +j The recording paper feed according to item 1, characterized in that when the upper set mechanism is activated, the recording paper loading portion having the higher priority is selected. Paper selection method. (3) The high-priority recording paper loading section has the recording paper of the loading section arranged in the vertical direction, and the highest priority recording sheet loading section among them is the scope of the second patent claim. 1. The recording paper feed selection method described in Section 1 or Section 2. (4) The recording paper sorting and selection method according to any one of claims 1 to 3, wherein the recording paper loading section is a paper feed cassette.