DE2361621A1 - FEEDER FOR COPY PAPER - Google Patents

Description

\ BbuLMQ ° CC D INI MI 23616

TEL. (089) 53 9S 53-56 TELEX: 524845 tlpat CABLE ADDHESS: Germaniapatent Munich

December 11, 1973 B 5767

Canon Kabushiki Kaisha Tokyo j Japan

Feeding device for copy paper

The invention relates to bring _s copy media separated from already filled in the copying machine copy media by hand into a predetermined position, after which this discrete and inserted by hand on a feed device for a copying medium to a copying machine and particularly to such a device which allows Copy medium can be further conveyed so that an original image is copied through an ordinary copying process.

Sheet-like copy media such as sheets of peelable paper, photosensitive paper, textiles, plastics or the like are produced in a wide variety of dimensions, qualities and colors etc. where _s is desirable but a copy medium to loading

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use that from the stored in the copier-t'-n Copy medium differs, the filled paper medium must be made removed from the machine, and then loaded the desired type of copy media into the machine. Such an exchange of copy media is troublesome. when a variety of copies through the same machine is to be manufactured; this led to significant Problems with making office work more efficient.

Therefore, a system has heretofore been proposed in which any predetermined container (hereinafter referred to as cassette each containing preselected types of copy media at the copy media feed station "of the copier machine can be replaced so that the operation required to replace a copy medium can be avoided Use of such cassettes as a cassette system is known, in fact, has heretofore been put into practice; However This system, too, brings difficulties in exchanging one cassette for another, if it is only desired, only ' make two or three copies using a different type of copy media.

To make a small number of copies using To be able to produce copy media that differ from those that are already inserted in the machine a system has been developed, whereby any copying sp ^ manually into a copy media feed port or copy media feed port can be inserted in a copier

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_s is provided in addition to an automatic copy medium. However _TO guide ^m e ^chan i ^smus · From this last system you can not say that because ideal'ist _s such an opening arrangement of a separate feeding mechanism and a control device for this purpose makes necessary wodurch.der structure of the entire device is complicated. Such an opening could be useful in copier machines of the type known as Electrofax, in which photosensitive sheets can be inserted sequentially and the movement of the photosensitive sheet is used to control the copying process; on the other hand, arranging an opening is not suitable in copier machines of the type in which the control of the copier conveying process can be automatically effected by the copying process only by means of a signal for the copying process.

The invention provides a copy medium feeder or copy medium conveyor in a copy machine of those Type in which a feed member is only in working contact with the during feeding from its rest position uppermost sheet-like Kpoiermedium can be singed that is in layers within a container, so that the top copy medium is automatically fed; the feed device has a passage device, which is at a predetermined Position between the accommodated sheet-like copy medium and the feed member in its rest position located to a copy medium separate from the filled

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Copy media to guide. The pass-through device can with index marks for positioning a desired type of copy media in a predetermined location and for orienting can be used during the reverse printing.

The object of the invention is to create a possibility of performing a copying process with a minimum of mechanical devices for feeding or conveying copy media. Where it is desired _3, to use a print medium that is different from the Kopiermedienart ₃ which has been already introduced in a copying machine _a the invention enables the desired copying _s Medi ^ m with the desired

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Copy image to be printed _s without the already filled copy media should be removed from the machine "Further, it is to enable the object of the invention ₉ is a ■ Printing If necessary, on both sides in a simple-Ifeise, namely any on each filled paper medium and in a in such a way that one side of a copy medium is printed with an image copy and then the other side of the medium is printed. If necessary, this double-sided printing should also be feasible on a copier medium that differs from the copier medium filled in, with one. Side of this different copy medium is printed with an image copy, after which the other side of the copy medium is printed in the same way,

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The invention makes it possible to print on a copy medium that differs from that loaded in the copier machine Copy medium differs to perform in an efficient manner without the need for any specific feeding device and control device must be provided for this different copy medium. Positioning a copy medium for two-sided Printing is simple and error-free for every operator with the aid of index marks or index marks achievable ", which are provided on a through-feed device for the copy medium, so that incorrect insertion of the copy medium is prevented and, as a result, a reduced degree of copying efficiency that would result from unsuccessful copying.

The invention is illustrated in more detail below with reference to hand Drawings explained in more detail on the basis of several embodiments.

Fig. 1 is a partial longitudinal sectional view of an electrophotographic Copying machine on which the invention has been implemented;

Fig. 2 is a top plan view of a feed cassette showing to be used in the copier machine of Figure 1;

Fig. 3 and Fig. 4 (I) and (II) illustrate the relationship between the clamping of the copy media and the orientations of the printed 409827/0251

Images, if the media is to be printed on both sides;

FIGS. 5 and 6, as well as 7 and 8, show in which way the copy media according to the pip. 3 and H from the

Ejected and reinserted into the copier;

Fig. 9 is a partial longitudinal sectional view of an electrophotographic Copying machine in which the invention is applied in another embodiment has been.

The present invention is illustrated in the following ^{Fig. 1} , using a wet type electrophotographic machine with image transfer using a drum type photosensitive medium having a photoconductive layer.

The electrophotographic copier with image transfer has a delivery station for release paper or transfer paper, an image transfer station, a Pixierstation and an output station. A photosensitive drum 1 is from a primary supercharger, a secondary supercharger or discharger for charging or discharging the photosensitive Drum simultaneously with illumination by image light, a total exposure device, a developing device, surrounded by a cleaning device, etc.; however, these facilities are not shown.

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A cassette C contains sheets of pull-out paper Po. A paper feed member 2 can be lowered in response to a signal representing a predetermined position occupied by the photosensitive drum; this feed member can be in the form of a normally rotating feed roller. It is a set Steurrollen 3 provided transporting successive Afegiafepapierblätter P laterally depending on the peripheral speed of the photosensitive drum 1 "Further, one sees a supercharger H for the squeezing of the developer liquid _s a BIId = Uber = tragungsauflader 5 ₃ a AbziehpapiertrenngöFt 6 _a a drying Fixing device 7 with a heating plate 9 and a suction fan 8 for creating a negative pressure on the back of the release paper sheet 5 to ensure that the sheet _{3 is} lifted off. An unloader 10 for removing any residual charge that remained on the surface of the release paper sheet _{s is} a receptacle 11 for unloaded paper asiflie pairs of paper transport rollers or rollers 12 ₉ 13. "

In the copying machine described above construction, the invention utilizes the lid Cl of Papierzufüfwlcassette C as a Papiereinsetzplatte ₂ is t-jie in Fig. 2 provides the top of the lid Cl * is provided with index marks Ml ₉ MS.uiad W5 _B illustrating the position _s which are to be taken through the rear edges of the release paper sheets of different dimensions ₉ when these are placed on the Deekel C1. To u & n different Abziehpapierblättern for "Bo include the B5 (Japanese

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Standard size: JIS 257 mm 182 mm), format A4 (JIS, 297 mm χ 210 mm) and format B4 (JIS, 364 mm 257 mm). According to Fig. 2, the index marks are arranged so that Ml and M2 correspond to the formats B5 and A4, which are fed in the transverse direction (i.e. in the direction perpendicular to the length of the transmission medium), while M3 the Format B4 corresponds to being fed in its lengthwise direction (i.e. in the lengthwise direction of the transmission medium); the Index marks may be dependent in any other suitable manner can be chosen from the different dimensions of transmission media, with a wide variety of orientations can be chosen for promotion or feed. If the transmission medium has the format B4 or larger, so that it extends beyond the cover Cl, an auxiliary plate (not shown) associated with the cover Cl, in order to position the rear edge of such a large-format transmission medium to enable.

The operation of this embodiment of the present invention will now be explained. The cassette C in Fig. 2 applies for A4 format. Will this cassette into the copier inserted and used for one-sided printing on a B5 sheet, a release paper P1 of the format B5 is placed on the cover Cl, with the opposite short edges and a long Edge (rear edge) can be aligned with the index marks Ml for format B5. The is in this state Front edge of the paper sheet Pl partially on a separating pawl Sl. The paper feed roller 2 is located above the sheet of paper and does not constitute an obstacle. The index marks Ml are

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offset to the right in FIG. 2; this is because the peel-off paper separating belt 6 with respect to the photosensitive Drum 1 is offset to the right.

As the copying process continues, the will normally be rotating paper feed roller 2 is lowered in response to a paper feed signal until the peel-off paper sheet Pl touches, whereupon the roller 2, the paper sheet Pl and the underlying paper sheets P in the cassette C by a predetermined Amount compresses; thereafter, the paper sheet P1 is advanced by the rotation of the paper feed roller 2. In At this moment, the paper sheets P in the cassette remain in their original position, since there is little on them or no funding force is exercised. With this conveyance, the release paper sheet 1 becomes the image transfer station transported for image transfer, after which it is peeled or separated from the photosensitive drum and then is subjected to the fixing and discharging process and finally discharged onto the tub 11.

For double-sided printing, the paper sheet P1 printed on one side and outputted onto the tray 11 can be repeated be placed on the cover Cl with the printed side facing up, the alignment to the index marks Ml in made in the manner described above and the copying process' can be repeated. However, the orientation

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tion of the paper sheet Pl must be taken to ensure consistency in ensure the orientation between the images or images on the opposite sides of the sheet of paper, such as it is necessary for filing or binding.

The invention solves this problem in that it provides a cassette Cl with appropriate instructions, the Information about the placement of the paper for double-sided printing as can be seen from FIG.

If the Abziehpapierblatt Pl are fed in the transverse direction, so that it is bondable along its one Läng'srands in the manner shown in Fig. 3 ways (where the dashed line indicates the bonding position) _'f has the paper sheet Pl according sided printing and output are placed from the machine in the same orientation on the cover Cl as it was output on the tray, whereupon the alignment of the paper sheet with the index marks is to be carried out so that the paper sheet P1 is ready for a second copying process. If the release paper P1 is to be bound at its one short edge, as can be seen from FIGS. Ί (I) and (II), the paper sheet 1 output after one-sided printing is rotated horizontally by 180 ° in order to orient the printed image change, followed by another copy process. If the release paper sheet is to be fed in its longitudinal direction, the positional relationships described above must be reversed.

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In the embodiment of FIG. 1, the lid of the cassette was used as a means for providing index marks for positioning the release paper sheet P1. The Fig. 9 shows, in contrast, an electrophotographic copying machine with an image transfer, is substantially equal to the embodiment according to Fig. L, however, a separate guide plate used lh, to index marks located on the for positioning the Abziehpapierblatts Pl, and no longer on the cover Cl of the cassette C. The index marks which are located on the guide plate 1 * 4 are the same as those shown in FIG. 2, the guide plate itself being detachably attached. An arrangement using such a guide plate lh can be effectively used in copying machines which use a fixed container for release paper instead of a detachable cassette-shaped container. or the like.

The invention has been described using a copier machine which has a transmission medium in the form of ordinary paper However, the invention is used in the same way in copier machines applicable, the transmission media made of other materials, such as B. from textiles, plastic film or the like. The invention is also applicable to copier machines applicable to those who use sensitive paper. Furthermore, the feed device is not for the transfer medium or peel-off medium on the training in the form of a normally circulating form " derrolle 2 limited according to FIG. 1, but can also take the form according to Ausführungs.form of FIG

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Rotary shaft 15, a rotary link l6 and an endless belt 17 exists, the rotary member 16 only in the promotion of the release paper is rotated so that the paper through the endless Belt 17 is promoted.

The invention thus provides a copier machine of those Type of construction in which a conveyor element or feed element is only in contact during feeding from its rest position Can be lowered with the top sheet-like copy medium that sicii is located in layers within a container in order to in this way to automatically feed the uppermost copy medium, wherein a copy medium feed device, a passage device or has a guide plate positioned at a predetermined position between the loaded bit-like copy media and the feed member located in its rest position is to separate from the loaded copy media a separate Feeding in copy medium »The separate copy medium is fed in with the aid of the feed member.

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Claims (6)

Claims 1. Feeder for a copy medium in one Copying machine, characterized by a feed member (2) that only during the feeding from its rest position in contact with the uppermost sheet-like copy medium. (P) lowered can be that is located in layers within a container (C) in order to feed the top copy medium in this way, wherein the feed device includes a passage device (C1, 1 * 1) at a predetermined point between the filled sheet-like paper media (P) and which is in its rest position feed member (2) to separate from the filled Copy media (Pl) feed a copy medium, this discrete copy medium (Pl) being conveyed through the feed member will. 2. Feed device according to claim!, 'Characterized in that the passage device (Cl; 14) for guiding a discrete copy medium (Pl) with index marks (Ml, M2, Mj) for positioning the left and right side and / or the rear end and / or for orienting the top or bottom for copy media of more than one different size . 409827/0251 3. Feed device according to claim 1, characterized in that the passage device (Cl; 14) is provided with index marks is designed for positioning and / or orienting more than one size of copy media, if their one side is to be printed after the other side has been printed. 4. Feed device according to claim 1 to 3 _}, characterized in that the feed device has a guide plate (14) which is arranged at the predetermined point between the filled sheet-like copy media and the conveyor member (2; 16) which is in its rest position. 5. Feed device according to claim 5> _s characterized in that the guide ^{plate (I 1} O is provided with the index marks. 6. Feed device according to claim 1 to 6, characterized in that that the guide plate is formed by a lid portion (Cl) of the container (C) in which sheet-like Copy medium of the same size as a stack of sheets is included. AO9827 / G251