JPS61112170A - Control method of electrophotographic recording device - Google Patents

Abstract

PURPOSE:To perform efficiently recording without any waste of time by starting electrostatic charging for one corresponding frame of an electrophotographic film by the time when an original is loaded on the original loading part of an original conveying mechanism and stopped at an exposure position. CONSTITUTION:An original sending-in roller 31 operates when the original is loaded on the original loading part 29 of the original conveying device 31 and the loading 35 is detected by a sensor 33. When the front end of the original passes through the sensor 33, the sensor 33 confirms that the original is caught in 36, and the original is conveyed 37 through the operation of a conveyor belt 27 and sent to the specific exposure position on an original platen 12. when the catching 36 is confirmed, electrostatic charging 38 for one corresponding frame of the electrophotographic film is started on condition that the frame is positioned in an electrostatic charging and exposing chamber. Exposure 39 is carried out after the electrostatic charging 38 and conveyance 37 are completed. Then, the film is fed 40 by one frame and development 41 and squeezing 42 are performed. Thus, recording is performed efficiently without any waste of time.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method of controlling an electrophotographic recording apparatus that performs recording using an electrophotographic light-sensitive material, and is concerned with streamlining recording, etc. It was planned.

<Prior Art> In recent years, large amounts of documents, printed materials, etc. have been used, and how to rationalize the storage of these materials has become a major problem in improving the efficiency of office processing. To streamline this process, an electrophotographic recording apparatus has been proposed that uses an electrophotographic photoreceptor instead of a conventional silver salt photoreceptor. Electrophotographic photoreceptors differ from conventional silver salt photoreceptors in that they have photosensitivity only when charged.

Therefore, this electrophotographic photoreceptor is used in an electrophotographic recording apparatus that records nine images by performing charging, exposure, development, drying, and fixing on a limited image area of the photoreceptor.

As shown in FIG. 2, which shows an example of its schematic structure, this electrophotographic recording apparatus is provided with a transparent original table 12 on the top surface of a housing 11 on which an original is placed face down, and a transparent original table 12 on which a document is placed face down. A document cover 128 is installed above. On the other hand, an illumination rung 14 for illuminating the document on the document table 12 is disposed below the document table 12, and image information on the surface of the document is transmitted to a first mirror 15, a second mirror 16,
It is reflected by the third mirror 17 and the process head 18
It is designed to be printed on electrophotographic film loaded in

As shown in FIG. 3, the process head 18 is a one-piece unit that incorporates processing chambers for charging, exposing, developing, drying, and fixing the electrophotographic film 19, and performs charging and exposure at the same time. Charging/exposure room 20. A developing chamber 21 that performs development and squeezing, a drying chamber 22 that dries the liquid developer by applying gas, and a fixing chamber 23 that performs fixing using a heat source such as a flash lamp are arranged at one-frame image intervals. And in a roll? For example, the IC is arranged so that the 16-frame electrophotographic film 19 can be moved and stopped frame by frame, and various processes can be executed simultaneously and in parallel. Therefore, many images are sequentially and sequentially charged, exposed, exposed,
When performing drying and fixing, it has the advantage that the processing interval for breastplates can be shortened.

In addition, in FIG. 2, 24 is a projection screen,
By rotating the first mirror 15 upward and retracting it, the image information recorded on the electrophotographic film 19 is enlarged onto the projection screen 24 via the third mirror 17 and the $2 mirror 16'. It is now possible to achieve great success in this state.

When recording image information with such an electrophotographic recording device, the document is placed on the document table 12 and the document cover 12 is placed on the document table 12.
When the user presses the shooting button, the process head 18 starts recording an image on the electrophotographic film 19. That is, first, one frame of the electrophotographic film 19 is charged in the charging/exposure chamber 20, and then exposed. Thereafter, the electrophotographic film 19 is fed, and the exposed frames of the electrophotographic film 19 are sent to the adjacent developing chamber 21, where they are developed and squeezed. Thereafter, the film transport 9 is performed, and the current height 99 frames of the electrophotographic film 19 are sequentially dried and fixed in the drying chamber 22 and fixing chamber 23, and the recording is completed. A specific example of the process head 18 described above is disclosed in Japanese Patent Application Laid-Open No. 59-100479.
It is sufficient to use the one disclosed in the above publication.

<Problems to be Solved by the Invention> In addition, when photographing a large number of documents continuously using the above-mentioned electrophotographic recording device, for example, a document conveying device 13t as shown in FIG. 4 is used. It is advantageous. This document conveying device will be described later, but it is installed above the document table 12 and has a V-shape so that the document, which is manually placed from a loading section provided at one end, is conveyed to a predetermined exposure position on the document table 120.

However, when recording multiple originals continuously,
After the next document is sent onto the document table 12 by the document conveyance device 13, the Vr-document is completely replaced, and the document comes to a standstill, sequence control for photographing, such as charging the electrophotographic film 19 in the process head 18, is started. If this happens, there is a problem in that the time required to exchange originals is wasted and the photographing efficiency is low.

On the other hand, if charging is started indiscriminately before the document is set on the document table 12, if there is no subsequent document, the charging of scheduled frames of the subsequent document on the electrophotographic film 19 will be completely wasted. Furthermore, even if there is a subsequent document, since the operator manually inserts the document into the document feeder 13, the time interval until the next document is set on the document table 12 is undefined. Therefore, the time from charging to exposure is not constant, resulting in variations in image density.

Means for Solving the Problems> The present invention has been made in view of the current situation and aims to provide a control method for an electrophotographic recording apparatus that can efficiently record without wasting time. In order to achieve all of these objectives, the present invention includes: - charging the electrophotographic film on a frame-by-frame basis;
In an electrophotographic apparatus equipped with an original transport mechanism that performs an exposure at a location to form an image on the electrophotographic film and transports the original to an exposure position, an original is loaded in the original loading section of the original transport mechanism. Charging of a corresponding frame of the electrophotographic film is started during the period from when the original is stopped at the exposure position.

Therefore, since the relatively long time from when the original is loaded into the original loading section of the original transport mechanism until the original is transported to the exposure position can be effectively used for charging, the photographing efficiency is improved. Moreover, since the time required from loading the document to conveying it to the exposure position t is constant, the time from charging to exposure does not become indefinite.

<Embodiment> The Seiko photographic device to which the present invention is applied is equipped with a document conveyance device and charges and exposes electrophotographic film one by one. A case in which the head t shown in FIG. 3 is used and the document cover 12a is replaced by the document conveying device 13t shown in FIG. 4 will be specifically described.

As shown in FIG. 4 showing its cross-sectional structure, the document conveyance device 13 includes a pair of conveyance rollers 25 and 26 that are driven and rotated, and are wound around the conveyance rollers 25 and 26 to move the document onto the document table 12 by frictional force.
A document loading section 29 and a document discharging section 30 are opened at both ends of the casing 28. Further, a pair of upper and lower document feeding rollers 31 is disposed adjacent to the document loading section 29, and a document discharging section 3.
A pair of upper and lower document discharge rollers 32 are disposed adjacent to the document discharge roller 0 . Further, a first sensor 33 and a second sensor 34 for detecting a document are provided on both sides of the document feeding roller 31t. As these sensors 33 and 34, for example, pressure sensors, photoelectric sensors, etc. are used, and detection signals are inputted to a control device (not shown). .

The illustrated document conveying device 13 is for an operator to hand over documents one by one, but the document conveying device 13 is used to transfer documents stacked at a predetermined position one by one to a document feeding roller 31 using a pull-out roller. It may be a fully automatic type in which it is held in its mouth and then sent out.

As shown in FIG. 1, which shows a schematic flowchart, the control of such an electrophotographic recording apparatus is such that a document is first manually loaded into the document feeder 13 from the document loading section 29, and the document loading 35 is first loaded into the document loading section 29. When detected by the sensor 33, the document feed/shrink roller 31 is activated. When the leading edge of the document passes the document feed roller 31 by the operation of the document feed roller 31, the second sensor 34 confirms that the document has been gripped 36, and the document is then conveyed by the document conveyance 37 by the operation of the conveyor belt 27. done, manuscript table 12
is sent to a predetermined exposure position above. This manuscript is included 3
6 is confirmed, at the same time, in the process head 18, all the corresponding parts of the electrophotographic film 19 are transferred to the charging/exposure chamber 20.
On the condition that the object is located at , charging 38 of the object is started. When this charging 38 is completed and the document transport 37 is completed and the document comes to rest at the exposure position, exposure 39 is subsequently performed, and then the recorded document is taken out from the document discharge section 30.

If there is a next document, the document is gripped 36 upon completion of the document conveyance 37 of the previous document, and the document is conveyed 37 at the same time as the document is conveyed when the exposure 39 is completed.

On the other hand, in the process head 18, after the exposure 39 is completed, a film advance 40 for one frame of the electrophotographic film 19 is performed, and the exposed frame in the charging/exposure chamber 20 is moved to the adjacent developing chamber 21. There, development 41 and subsequent squeeze 42 are performed. Also, is this film sent? ) 190 pieces of electrophotographic film by 40! Electricity/exposure room 2
It will be positioned at 0, and the next document will be placed in the original grip position 3.
6 is detected by the second sensor 34, that band 438 is initiated and subsequent processing occurs as described above. still,
If the originals are loaded continuously, the original gripping 3
6 may be earlier than the completion of the film feed 40 of the electrophotographic film 19 to the charging/exposure chamber 2θ, and in this case, the charging 38 is started immediately after the completion of the film feed 40.

Repeat the above shooting to advance the film sequentially! 7 is carried out, and the developed electrophotographic film 19 is sent to the drying chamber 22, where it is dried by air from an air pump (not shown), and when the developed electrophotographic film 19 is in the fixing chamber 23. is fixed.

After shooting the last document when shooting all images continuously,
When the processing in the developing chamber 21 and the charging/exposure chamber 20 is completed, the film is continuously fed, and then drying and fixing are sequentially performed in the drying chamber 22 and the fixing chamber 23 to complete the recording. The operator may use a switch or the like to determine which document is the last one in a series of images, or a bookmark that can be detected by the main body of the apparatus may be printed on the document. Furthermore, if no uninterrupted original is inserted for a certain period of time, it may be determined that the photographing of the final original has been completed.

In this way, the original is transferred to the original loading section 29 of the original transporting device 13.
When the document is loaded, the sensor 34 detects this and starts charging accordingly, allowing efficient recording of multiple documents. Further, since the electrophotographic film 19 is charged and exposed in synchronization with the conveyance of the document by the document conveyance device 13, the time from charging to exposure can be kept constant and images are not adversely affected.

<Effects of the Invention> As specifically explained above with reference to one embodiment, according to the present invention, there is no wasted time, efficient recording is possible, and images are not adversely affected due to non-uniformity of time from charging to exposure. This has the effect of not making any plans.

[Brief explanation of drawings]

FIG. 1 is a schematic flowchart for explaining a control method according to an embodiment of the present invention, and FIGS. 2 to 4 illustrate an electrophotographic recording apparatus to which the present invention is applied.
FIG. 2 is a schematic structural diagram of the entire apparatus, FIG. 3 is a perspective view of the process head, and FIG. 4 is a cross-sectional structural diagram of the document conveying device. In the figure, 13 is a document conveyance device, 18 is a process head, 19 is an electrophotographic film, 20 is a charging/exposure chamber, 21 is a working chamber, 22 is a drying chamber, 23 is a fixing chamber, 27 is a conveyor belt, 29 30 is a document loading section, 30Fi document discharging section, 31 is a document transfer roller, 32 is a document discharging roller, and 33 and 34 are sensors. Patent applicant Fuji Photo Film Co., Ltd. Representative Patent Attorney
Shibu Mitsuishi (and 1 other person) Figure 1 Figure 2 Figure 3 Figure 4 Procedural amendment document January 1985/(Sun)

Claims (1)

[Claims] In an electrophotographic apparatus including a document transport mechanism that charges and exposes an electrophotographic film frame by frame at the same location to form an image on the electrophotographic film and also transports the document to an exposure position, the document transport mechanism is An electrophotographic recording apparatus characterized in that control is performed to start charging a corresponding frame of the electrophotographic film after the original is loaded in the original loading section until the original is stopped at the exposure position. Control method.