JPS63266464A - Copying machine - Google Patents

Abstract

PURPOSE:To decrease mis-copying by setting standard copying conditions automatically except the conditions set after the previous copying when placement of an original is detected. CONSTITUTION:An optical sensor detects an original size when the original is imposed on an original tray 7. Setting of a magnification, etc., is then carried out and copying is started in an operating part not shown. The light reflected from the original is imaged by scanning of an optical system 8 to form a latent image on a photosensitive body 2. A toner image is then formed in a processing part 3 for image formation and is transferred onto the fed paper. The processing program for the entire part is stored in a ROM 21 at this time and a RAM 22 is used as a working area at the time of copying. A magnification 1, automatic density adjustment and number of copies 1 are memorized as standard copying conditions in the RAM 22. The copying under the standard conditions is thereby progressed unless the setting from the input key of the operating part is not changed. As a result, the mis-copying is decreased.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application This invention relates to a copying machine that copies a document placed on a document table according to copying conditions such as set magnification and density.

1) Conventional Technology There is a copying machine in which copying conditions such as magnification, density, and number of copies are set using an operation unit provided on the main body of the device, and copying processing is performed based on these copying conditions.

(C) Problems to be Solved by the Invention However, with copying machines that can set various copying conditions to arbitrary settings as described above, it is easy to start copying without checking the copying conditions, especially when in a hurry. Copying was sometimes performed using the previous copying conditions, resulting in a copy error. Generally, same magnification, automatic density setting, 1 image.

There are standard copying conditions that are easily used, such as standard copying conditions, and when copying is performed using such standard copying conditions, it is not a special condition, so checking the copying conditions has often been neglected.

Miscopying was also a waste of paper and was uneconomical.

Therefore, in this invention, when a document is placed on the document table, the standard copying conditions are set to conditions other than those set after the previous copying process. To provide a copying machine capable of preventing the occurrence of copy errors even in the case of copying.

(Means for Solving Problem d1) This invention provides a copying machine that includes means for setting copying conditions and means for copying a document placed on a document table in accordance with the copying conditions. , further comprising a document detecting means for detecting that a document is placed on the document table, and having standard copying conditions as the copying condition, and wherein the document detecting means detects that a document is placed on the document table. The present invention is characterized by comprising means for setting a copying condition other than the copying condition set after the end of the previous copying process as the standard copying condition.

(81 Effect) In the copying machine of this invention, when the original to be copied is placed on the original table, this is detected by the original detection sensor and most of the copying conditions such as magnification and 61 degrees are set to standard copying conditions. However, the copy conditions entered for the original before direct placement (the copy conditions entered after the previous copy process) are not set to the standard copy conditions, and the input copy conditions are They are set as they are. Copying processing is performed according to these copying conditions.

(f) Embodiment FIG. 2 is a diagram showing a schematic configuration of a copying machine which is an embodiment of the present invention.

A drum-shaped photoreceptor 2 is arranged approximately in the center of the copying machine main body 1. A charger 31 is provided near the outer periphery of the photoreceptor 2.
Various copying processing devices such as a developing device 32 are provided, and the image forming processing section 3 is configured. On the right side of the copying machine main body 1, there are paper feeding power centimeters 41, 42° 43 and paper feeding rollers 44, 45.
46 and the like are arranged to constitute the paper feed section 4. Also, on the left side of the copying machine main body 1 is a paper output tray 51. Paper ejection rollers 52 and the like are arranged to constitute the paper ejection section 5. Furthermore, a timing roller 61 is provided between the paper feed section 4 and the paper discharge section 5. A fixing roller 62 and the like are arranged to constitute the paper conveyance path 6.

On the top surface of the copying machine main body 1, there is a document table 7 made of transparent glass or the like.
A light source 81 and a mirror 8 are arranged below the document table 7.
An optical system 8 consisting of 2 to 85 lenses is provided. The document table 7 is provided with a document cover 9 that can be opened and closed.

An original to be copied is placed on the original table 7. When a document is placed on the document table 7, the size of the document is detected by a document detection sensor (not shown). The document detection sensor includes a light sensor consisting of a light-emitting and light-receiving element arranged at a position unique to each document size on the document table, and the light from the photosensor corresponding to each document size is blocked by the document placed on the document table 7. This allows the size of the document to be detected. This document detection sensor can also detect the open/closed state of the document cover 9.

With this configuration, the original placed on the original platen 7 is scanned by the optical system 8, and reflected light from the original forms an image at the exposure point of the photoreceptor 2 to form a latent image. A toner image is formed on this latent image in the image forming processing section 3, and this toner image is transferred to the paper feeding section 4.
The image is transferred onto a sheet of paper fed therefrom, and the sheet is ejected from the paper ejection section 5 via the conveyance section 6. Copy processing is performed in this manner.

An operation section (not shown) is provided on the main body 1 of the copying machine. The operation section is provided with a print switch and keys for manually controlling various copying conditions such as magnification, density, and number of copies.

FIG. 3 is a block diagram of the control section of the copying machine. The overall control is performed by the CPU 20, and its processing program is stored in the ROM 21 in advance. When executing this processing program, the RAM 22 is used as a working area. The CPU 20 is connected to an operating section having input keys via an l1023, a sensor section including a document detection sensor, and an optical system 8. Image forming processing section 3. A copy processing section including a paper feed section 4 and the like is connected. The RAM 22 is provided with memory areas M1 to M3 for storing the copying conditions inputted from each of the input keys and set standard copying conditions.

FIG. 1 is a flowchart showing a processing program stored in the ROM 21. As shown in FIG.

When the power of the copying machine is turned on, the memory etc. are cleared at step 01 and the fixing roller 62 is warmed up. When these are completed, the sensor and input signals from the sensor section and the printing section are cleared at step n2. - is read, and if some input is determined at n3, the following processing is performed according to that input. If there is no input, a time-up of timer T1, which will be described later, is detected at n4, and if timer T has timed up, flag F is set at n5. (Indicating that timer T has timed up) is set to 7 seconds and returns to n2. Also, if the timer T1 is counting time, the process returns to n2 and waits for human power.

If the magnification setting key of the operation section is operated, this is determined at n6, the magnification setting flag F1 is set at n7, and the magnification input at n8 is stored in the memory area M1. Further, if the brightness key and setting key related to density are operated, this is determined at n9, the density setting flag F2 is set at nlo, and the density input at nil is stored in the memory area M2. Furthermore, if you operate the numeric keypad to specify the number of sheets, this will be determined at n12, and n
At step 13, the number of sheets setting flag F3 is set, and n
The number of sheets input in step 14 is stored in memory area M3. Each copying condition is set in this manner, and after each condition is stored, the process returns to n2.

When a document is placed on the document table 7 and the print switch on the operation unit is operated, it is determined in step n15, and a copy is made in accordance with the copying conditions of magnification and density stored in the memory area in step n16. Processing takes place. If it is determined in n17 that the copying process for the number of sheets stored is completed, n1B
Add 0 to the number X indicating the permutation of the flags and set n19.
The flag Fx (re at this point) is reset. At n20, 1 is added to the number X, and at n21, the value of the number X is limited to less than 4, and the flags F0 to F are sequentially reset. In this way, the flags representing the up state of timer T+ and the cent state of each copying condition are all reset. When the flags FO to F and the glue setting are completed, the timer T1 is reset at n22, and at the same time, the timer T1 is reset at n23.
Then, the timer T is started and the process returns to n2. The timer T1 measures the minimum time required to open the document cover 9, replace the document on the document table 7 with the next document, and close the document cover 9 again. As described above, the time-up of the timer T1 is determined at n4, and if the time-up has deviated, the flag F0 is set at n5.

When a document is placed on the document table 7 and the document cover 9 is closed, the document detection sensor detects the document size and the open/closed state of the document cover 9, and it is determined in n24 that the document has been placed. . At n15, the flag F0 representing the up state of the timer T is determined, and if the flag F0 has been sent, at n26, the number X representing the permutation of the flag and memory area is set to 1, and the process advances to n27. , determines the set state of flag Fx (Fl at this point). n
By adding 1 to the set number X in step 29 and limiting the value of the set number X to less than 4 in n30, the set states of the flags F, .about.F, are sequentially determined. If the flag Fx is in the reset state at n27, standard copy conditions corresponding to the memory area Mx are set in the memory area Mx corresponding to the flag Fx at n28.

That is, the flag Fl'''F3 is set to n18 immediately after the copying process.
It is reset at steps n21 to n21, and then set by inputting copying conditions at steps n6 to n14. Then, the copying conditions in the previous copying process for which the flag was not set are set to the standard copying conditions when the document is placed. It is also possible to input copy conditions after placing the original. After setting the copy conditions in this way, the process returns to n2.

When the flag F0 is in the reset state at n25, it is determined that the copying process is to be performed under the same conditions, and the memory areas M1 to M in which the copying conditions are stored are not cleared and n2 is executed.
Return to

Note that the standard copying conditions are that the magnification M is 1.00 times, the density M2 is in automatic adjustment mode, and the number of sheets M is one. Further, in this embodiment, since the copying conditions shown are three conditions: magnification and number of copies per degree, the number X is set to be less than 4, but the number will change depending on the number of copying conditions.

Furthermore, in this embodiment, at the end of the copying process, timer 1 is started to measure the minimum time required for the next original to be replaced, and while timer T is counting that time, the next original is replaced! ! Since the previous copying conditions are not canceled when the original is placed, there is an advantage that it is not necessary to input the copying conditions each time the original is placed when making continuous copies under the same conditions.

(g) Effects of the Invention According to the copying machine of the present invention, the copying processing conditions that were used during the previous copying process and were not set after the previous copying process was completed are used as standard copying conditions when the original to be copied this time is placed. Since the conditions are set, simply by inputting special non-standard copying conditions, other copying conditions can be set to standard ones, and copy errors can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing a processing program for a copying machine according to an embodiment of the present invention, FIG. 2 is a schematic diagram of the structure of the copying machine, and FIG. 3 is a block diagram of a control section of the copying machine.

Claims (1)

[Claims] (1) In a copying machine equipped with means for setting copying conditions and means for copying a document placed on the document table according to the copying conditions, the document is placed on the document table. The copying condition includes a standard copying condition as the copying condition, and when the document detecting device detects that the document is placed, the copying condition set after the previous copying process is completed. A copying machine characterized by comprising means for setting copying conditions other than the standard copying conditions as the standard copying conditions.