JPH02309367A - Copying mode control method - Google Patents

Abstract

PURPOSE:To prevent useless copying by carrying out copying in a platen copying mode when an instruction to start copying is given after a document is placed on a platen glass and a platen cover is closed. CONSTITUTION:For example, if the previous user leaves forgetting the document D on a document tray 2, the next user can open a platen cover 1a, directly place the original D on the platen glass 4, closing the platen cover 14, and turning on the copying starting key, and copying is carried out in the platen copying mode. However, if the previous user forgets the document D on the platen glass 4 and leaves with the platen cover 1a closed, the next user can place the document on the document tray 2, when a copy starting key 22 is turned on, the previous document D is not copied but ejected to a document containing tray 7, and copying operation is carried out against the next document D in an ADF copying mode.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copy mode control device in a copying machine equipped with an automatic document feeder.

[Conventional technology]

In the copying machine (m-), the user manually places the documents to be copied one by one on the platen glass and then copies the documents. However, when the number of original sheets increases, the copying process becomes extremely complicated.

Therefore, an ADF (automatic do
An automatic document feeder called a document feeder (CumentFeeder) is sometimes used.

The automatic document feeder is normally installed integrally with a platen cover that covers the top surface of the copying machine, and when copying is performed using the automatic document feeder, the platen cover must be closed. Use it in the same condition. In this case, the original on the original tray is carried onto the platen glass, and after being copied, is discharged onto the original holding tray. Note that the iron can be used in automatic document feeding (A
D F) This is called the single-shot mode.

When copying a thick original such as a book, the platen cover is opened and the original is manually placed on the platen glass. At this time, the automatic document feeder should not operate. This mode in which a document is placed directly on the platen glass and copied is called a platen copy mode.

As mentioned above, a copying machine equipped with an automatic document feeder has two copying modes: ADF copying mode and platen copying mode, so the copying machine can detect the placement state of the original, etc. , it is necessary to automatically switch to a copy mode suitable for this.

For this reason, in a conventional copying machine equipped with an automatic document feeder, the copying mode is controlled based on the following conditions.

(1,) When there is no original on the original tray, use the platen copy mode.

(2) When there is a document on the document tray, use ADFIII.
Set to photo mode.

(3) However, when the platen cover is open in (2), a warning such as "Please close the platen" will be displayed on the operation panel.

(4) During the copying operation, the above (1), (2),
Regardless of the condition (3), the previous copy mode is maintained.

[Problem to be solved by the invention]

In normal usage conditions, the above-described copy mode control does not cause any problems, but in special usage conditions as described below, problems may occur.

For example, if the previous user leaves the original on the original tray and leaves, the subsequent user places the original directly on the platen glass, closes the platen cover, and instructs the user to start copying. , above condition (2)! , :'
Since this is the case, the copying machine starts the copying operation in the ADFI copying mode. Therefore, the original placed on the platen glass by a later user is ejected onto the original storage tray without being copied. Copying is then performed on the previous user's original. In other words, a copy is made that is not what the user intended, resulting in poor operability and unnecessary copying.

The present invention was devised in order to solve the above-mentioned problems, and it is an object of the present invention to enable copying to be performed as intended by the user even under the above-mentioned special conditions.

[Means to solve the problem]

In order to achieve the above-mentioned object, the automatic document feeding method of the present invention is provided when a copy start is instructed with the platen cover open, and when the platen cover is closed after the document is placed on the platen glass. If a document is inserted into the document tray for automatic document feeding and a start of copying is then instructed to start copying, the mode will be set to automatic document feeding copy mode. Features.

[Effect]

According to the present invention, when an instruction to start copying is received after the original is placed on the platen glass and the platen cover is closed, copying is performed in the platen copy mode. Therefore, for example, even if a document remains on the document tray, if you place the document on the platen glass and issue an instruction to start copying after the platen cover is closed, the mode will be switched to platen copy mode, and the document for subsequent users will be Copying is given priority.

〔Example〕

DETAILED DESCRIPTION OF THE INVENTION Hereinafter, features of the present invention will be specifically described based on examples with reference to the drawings.

FIG. 1 shows a schematic configuration diagram of a copying machine equipped with an automatic document feeder to which the copying mode control method of the present invention is applied.

The automatic document feeder l has a document tray 2 for automatic document feeding.
' is installed on the top surface of the copying machine main body 3 by removing the upper original paper.
A separation and feeding unit 5 that transports the original in the direction of the platen glass 4, a transport belt 6 that transports the original to a predetermined position on the platen glass 4, and a paper discharge unit 8 that discharges the original after copying onto the original storage tray 7. etc. The conveyor belt 6, document storage tray 7, and paper ejection section 8 are normally provided integrally with a platen cover 1a that covers the top surface of the copying machine main body 3 so as to be openable and closable.

Further, an ADF document sensor 9 is provided near the document tray 2 to detect whether a document is inserted into the document tray 2 and whether there is a document present therein. A platen document sensor 10 is provided nearby to detect whether a document is placed on the platen glass 4 or not. Further, a platen cover switch 11 is provided near the pivot point between the platen cover 1d and the copying machine main body 3 for detecting the open/closed state of the platen cover 1a.

FIG. 2 shows a block diagram of a copy mode control circuit of the copying machine shown in FIG.

In the figure, reference numeral 21 denotes a CPU (central processing unit) that controls the entire copying machine.Based on the instruction to start copying from a copy start key 22 provided on an operation panel (not shown), etc., Manual data on the number of copies, paper size, and reduction ratio, and the ΔDF original sensor 9. Platen original sensor 10. A well-known document exposure and scanning system is provided in the copying machine main body 3 (see FIG. 1) by controlling the copying machine main body control circuit 23 in accordance with the output from the platen cover switch 11.

Copying is performed by sequentially operating the developing system, transfer system, paper transport system, fixing system, etc. The processing program for this copying is in the ROM.
(read-only memory) 24, and
RAM (random access memory) 25 is CPU 21
used as a work area.

Further, the cp U 21 controls the operation of the automatic document feeder 1 via the ADF control circuit 26. Although FIG. 2 shows only the minimum configuration necessary for explaining this embodiment, in reality, the CPU includes a CPU that controls the operations of the copying machine main body 3 and the automatic document feeder l. Other input/output elements (not shown) are connected for.

Next, the third section regarding the operation of the copy mode control circuit described above will be explained.
This will be explained with reference to the flowchart shown in the figure.

First, the closed state of the platen cover 1a is detected by the platen cover switch 11 (step 101),
Next, check if the document tray is inserted into document tray 2.
F is detected by the original sensor 9 (step 102). Note that this detection of the original document is performed by detecting the rising edge of the output of the ADF document sensor 9. That is, only when the document tray 2 is inserted after the platen cover 1a is closed, the process proceeds to the next step 103.

In step 103, the copy mode of the copy machine is set to ΔDFit.
! The copy mode is set, and in step 104 it is determined whether or not the copy start key 22 is turned on, and the copy start key 2 is turned on.
2 is turned on, steps 101-104. 101
and loop.

When the copy start key 22 is turned on, it is determined whether the ADFI copy mode is set (step 105).
, if set, copy in ADF copy mode.
Step 106). If the ADFI copy mode is not set, copying is performed in the platen copy mode (step 110).

Further, when it is detected in step 101 that the platen cover 1a is opened, the ADF copy mode is cleared (step 107), and then the copy start key 22 is turned on while the platen cover 1a is left open. Then (steps 108 and 109), copying is performed in the platen copy mode (step 110). Further, when it is detected in step 108 that the platen cover 1a is closed, the platen original sensor lO determines whether or not there is original paper on the platen glass 4 (step 111). is step 104
Return to When there is no document on platen glass 4,
It is determined whether or not there is a remaining original in the original tray 2 (step 112), and if there is an original remaining, the copy mode is set to AD.
After setting the Fffl photo mode (step 113),
The process returns to step 104, and if there is no document left in the document tray 2, the process directly returns to step 104.

Therefore, for example, if the copy start key 22 is turned on after first opening the platen cover 1a and placing a document on the platen glass 4, steps 101, 107, 10
8.111.104.105.110, and copying is performed in the platen copy mode.

Further, after closing the platen cover 1a, placing a document on the document tray 2, and then turning on the copy start key 22, step lot, 102.103.104.
In steps 105 and 106, copying is performed in the ADF copy mode.

Next, mode control operations in special usage conditions will be explained.

For example, if the previous user leaves the document tray on document tray 2 and leaves, the subsequent user
When the platen cover 1a is opened, a document is placed directly on the platen glass 4, the platen cover 1a is closed, and the copy start key 22 is turned on, step 101. 107.
108. 111. 104. 105. 110
Then, copying is performed in the platen copy mode. Therefore, the document placed on the platen glass 4 by the subsequent user is copied, and the automatic document feeder l does not operate. In other words, copying is performed in accordance with the user's intention.

Conversely, if the previous user forgets to hide the document on the platen glass 4 and leaves with the platen cover 1a closed, the subsequent user may place the document on the document tray 2. , when the copy start key 22 is turned on, step 1
01. 102. 103. 104. 105°10
6, the previous document is ejected to the document storage tray 7 by the conveyor belt 6 and the paper ejection unit 8, without being copied.
Reverse copying work is performed on the subsequent original in ADF copy mode.

〔Effect of the invention〕

As described above, according to the present invention, when a copy start is instructed with the platen cover open, and after the original is placed on the platen glass, the platen cover is closed, and then When instructed to start copying,
The platen copying mode is set, and when a copy start is instructed after the original is inserted into the original tray, the automatic original feeding copying mode is set. As a result, copies are made normally under normal conditions of use, and even if a later user attempts to copy when the previous user has misplaced the original, the later user's original will take priority. Copying is performed. Therefore, copies are not made contrary to the user's intention, and the operability of the copying machine is improved, and unnecessary copies can be avoided.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a copying machine equipped with an automatic document feeder to which the copying mode control method of the present invention is applied, and FIG. 2 is a block diagram of the copying mode control circuit of the copying machine shown in FIG. 3 are flowcharts for explaining the operation of the copy mode control circuit. 1: Automatic document feeder W la nib tray cover 2 =
Original tray 3: Copying machine main body 4 Nibraten glass 5: Separation feeding section 6; Conveyance belt 7:
Original storage tray 8: Paper ejection section 9: ADF original sensor 10 Nibraten original sensor 11 Nibraten cover switch

Claims (1)

[Claims] 1. If you are instructed to start copying while the platen cover is open, or if the platen cover is closed after the original is placed on the platen glass and then you are instructed to start copying, the platen copy mode is activated. A method for controlling a copy mode, characterized in that, when a copy start is instructed after a document is inserted into a document tray for automatic document feed, an automatic document feed copy mode is set.