Image forming apparatus

Abstract: According to the present invention, a belt-like recording medium on which an optional mark can be described and driving means thereof can be given to a usual analog image forming apparatus or digital image forming apparatus. Therefore, the mark can be also read in addition to usual reading of a document, thereby causing the mark image to be automatically described or transferred into usual document images. An embodiment in which only a mark can be independently described at an optional position is included as one of the embodiments of the present. By an analog or a digital image forming apparatus according to the present invention, it is possible to automatically insert such a mark as trademark, logograph (or logotype), etc., to an optional position on a sheet of image transferring paper. Therefore, an operator can be freed from such a troublesome work as attaching the mark to a source document before printing, etc.

Description: The present invention relates to an analog image forming apparatus in which an optical system moves relatively to a document placed on a document table, and the image of the document is scanned by the optical system and transferred to a sheet of image transferring paper. The invention more particularly relates to an analog image forming apparatus furnished with means by which additional images (marks) other than the document image can be transferred to the sheet of image transferring paper. An image forming apparatus having the above features is known for instance from Patent Abstracts of Japan, Vol. 3, No. 15 (E-89), 9th February 1979; and the respective JP-A-53-143232. In this prior image forming apparatus an accommodation slot is provided at a belt arranged on the document table, and a card on which a mark is described is inserted into the accommodation slot. The accommodation slot is transferred to the position exposable by the optical system by moving the belt, whereby other images (marks) than the document image can be transferred to a sheet of image transferring paper. Heretofore, in a conventional image forming apparatus composed as indicated above, a card on which the corresponding mark is described must be re-inserted in the accommodation slot whenever changing the mark to be transferred to the sheet of image transferring paper. Accordingly, the conventional image forming apparatus inherently has the problem that the operation takes much time. The object basic to the present invention is to provide for an analog image forming apparatus having means by which any optional mark can be remarkably simply transferred to a sheet of image transferring paper without replacing cards on which a mark is described. In order to accomplish the above object, an analog image forming apparatus in which an optical system moves relatively to a document, thereby causing an image of the document to be scanned by the optical system and to be transferred to a sheet of image transferring paper in conformity with the subject invention comprises: a belt-like recording medium in which a plurality of optional marks are physically described; mark selecting means for selecting one or more marks of the plurality of the marks described in the recording medium; a mark travelling mechanism for driving and travelling the belt-like recording medium so that a mark selected by the mark selecting means can be moved to an optional position; control means for controlling the mark travelling mechanism and for driving the recording medium to the optional position corresponding to the selected mark; and mark transfer means for transferring to an appointed position on a sheet of image transferring paper, an image of the selected mark or marks. In an analog image forming apparatus according to the present invention, a plurality of optional marks are physically described on a belt-like recording medium (for instance by means of a felt pen, etc.), and as one mark or two or more marks which are consecutively described, of the plurality of marks, is (or are) selected by the mark selecting means, the mark travelling mechanism is controlled by the control means, thereby causing the recording medium to be driven to a position where the marks selected on the recording medium can be exposed by the optical system. According to a particular embodiment of the invention the image forming apparatus further comprises: paper feed timing adjusting means for adjusting the timing of paper feed for the exposure scanning and for feeding paper when making an image transfer by said mark transfer means; and mark extracting means for extracting an image of the portion of a mark selected by the mark selecting means according to the timing adjustment amount by the paper feed timing adjusting means and the position of a mark positioned in the main scanning directing by said control means. In this embodiment, when transferring a mark, the timing of paper feed for exposure scanning of the mark is adjusted by the paper feed timing adjusting means, and a sheet of image transferring paper correspondingly is fed, wherein the mark transferring position on the sheet of image transferring paper is established by the control means and the paper feed timing adjusting means. According to the timing adjustment amount by the paper feed timing adjusting means and the position of the mark positioned in the main scanning direction by the control means, other image than the mark portion selected by the mark selecting means on a photosensitive body is deleted by the mark extracting means, and the image of the mark portion is extracted by the mark extracting means. As a result, only the mark selected by the mark selecting means is transferred to an optional position on the sheet of image transferring paper. The image forming apparatus further may comprise document transfer means for also transferring the image of a document onto to the sheet of image transferring paper so as to compose a mark and another image. In such an embodiment of the analog image forming apparatus of the invention, when the image of a document is transferred to the sheet of image transferring paper by the usual transfer means (first-time transfer processing), a second-time transfer processing is consecutively executed by the mark transfer means, thereby causing the selected mark to be transferred to an optional position on the sheet of image transferring paper. In this case, after a mark image is transferred to the sheet of image transferring paper by the mark transfer means, the document image can be transferred to the sheet of image transferring paper by the usual transferring means so as to compose the document image and an optional mark image on the sheet of image transferring paper. According to an embodiment of the subject invention the image forming apparatus may further comprise: first detecting means for detecting a first origin position of scanning of the optical system to a document placing area on a document table which is divided into the document placing area and a mark scanning area; and second detecting means placed in the vicinity of the boundary portion between the document placing area and the mark scanning area for detecting a second origin position of scanning of the optical system to the mark scanning area; the recording medium being arranged in the mark scanning area; the document transfer means being designed for transferring the image of a document placed in the document placing area onto a sheet of image transferring paper by letting the optical system scan from the first origin position of scanning of the optical system, which is detected by the first detecting means, and the mark transfer means being designed for consecutively transferring the image of a mark described on the recording medium onto the sheet of image transferring paper on which the image of the document is described by the document transfer means, by letting the optical system scan from the second origin position of scanning of the optical system, which is detected by the second detecting means. In this embodiment an optional mark can be described on a recording medium by using a felt pen, etc. When processing the image, the image of a document placed in the document placing area is transferred to the sheet of image transferring paper by letting the optical system scan from the first origin position of scanning of the optical system detected by the first detecting means and by feeding a sheet of image transferring paper from a paper feeding section. The optical system comes to a stop before the second origin position of scanning, and the sheet of image transferring paper on which the document image has been transferred is fed to the paper feeding section again. Consecutively, the mark image can be transferred to the sheet of image transferring paper on which the document image has been transferred, by letting the optical system scan from the second origin position of scanning of the optical system detected by the second detecting means arranged in the vicinity of the boundary portion between the document placing area and the mark scanning area and by feeding the sheet of image transferring paper again. The subject image forming apparatus may comprise mark detecting means for detecting the shape of a mark on the recording medium, and the control means may be designed for controlling the mark travelling mechanism on the basis of the results of detecting the shape of the mark by the mark detecting means. Thus the presence or absence of a mark on the recording medium can be judged through detecting the shape of a mark on the recording medium by the aforementioned mark detecting means, and the appointed mark can be quickly selected from the area on the recording medium, in which the mark is described, and the recording medium can be driven to the appointed position by the control means. In this embodiment, too, it is possible to transfer and process the mark images only (i.e. not to compose and process the mark images and other document images), or to actually compose the mark images to another image by feeding a sheet of image transferring paper on which another image has been formed in advance. Another document image can be transferred and processed following or prior to independent transfer processing of the mark image, that is, the document image and an optional mark image can be composed on a sheet of image transferring paper by making the transfer processing two times. Specific embodiments of the invention are described below with reference to the drawing in which: Fig. 1 shows the structure and construction of the main portions of an analog image forming apparatus according to an embodiment of the present invention, Fig. 1(a) is a perspective view with the document pusher open, Fig. 1(b) is a perspective view with the document pusher closed, Fig. 1(c) is a sectional view taken along the line A-A′ in Fig. 1(b), Fig. 1(d) is a plan view of the document pusher portion, Fig. 1(e) is a rough elevational view with the document pusher closed, Fig. 1 (f) is a view equivalent to Fig. 1 (e) with the optical system scanned, Fig. 2 is a block diagram showing one of the controlling systems of the analog image forming apparatus, Fig. 3 (a), (b), (c), (d), (e) and (f) are a flow chart showing one of the controlling procedures of the analog image forming apparatus, Fig. 4 and Fig. 5 show the structure and construction of the main portions of an analog image forming apparatus according to another embodiment of the present invention, respectively, and correspond to Fig. 1 (d), and Fig. 6 is a rough elevational view showing the whole configuration of one of the examples of an analog copying machine to which the present invention is applicable. An analog image forming apparatus according to the present invention can be so composed that only the image of a mark can be transferred to a sheet of image transferring paper or both the image of a mark and the images of a document can be composed on a sheet of image transferring paper. A mark image can be transferred later on the sheet of image transferring paper to which the images of a document have been transferred. The document images also can be transferred later on the sheet of image transferring paper on which the mark image has been transferred in advance. The ensuing description explains an embodiment of the analog image forming apparatus. In the first embodiment described below, an analog image forming apparatus so composed that the mark image and the document image can be composed on a sheet of image transferring paper is explained as an example. The whole configuration of the analog image forming apparatus A is described with reference to Fig. 6. An analog image forming apparatus A shown in Fig. 6 is composed as a copying machine having three paper feeding sections comprising a hand paper feeding section 30a and paper feeding cassettes 30b and 30c at the right side thereof. A document table 4 is provided on the upper surface of the analog image forming apparatus A. A lamp unit 28 which can move from the solid line position 28 to the two-dashed line position 28a along this document table 4 scans a document placed on the document table 4. A recording medium 1 described later and a mark travelling mechanism 2 (Fig. 1c) of the drive system thereof are provided at the extreme downstream section in the exposure scanning direction shown with an arrow 31 of a document pusher 5 by which a document placed on the document table is pushed down. The recording medium 1 is exposed and scanned by the lamp unit 28 as described below. The light emitting from the lamp unit 28 is reflected by a document on the document table or the recording medium 1 and makes an incidence to a group of lens 29 by way of mirrors 32a, 32b, and 32c. Furthermore, it is imaged on the surface of a photosensitive body 33 via mirrors 32d, 32e and 32f and forms an electrostatic latent image, corresponding to the document image or the mark image on the recording medium 1, on the surface of the photosensitive body in accompanying with the rotation thereof. The electrostatic latent image is developed to a toner image in a short time by either of a developer 34a or 34b (the developer 34b in the Figure) in accompanying with the rotation of the photosensitive body 33 and comes to a transfer section 36 opposite to a transfer charger 35. On the other hand, a sheet of image transferring paper which is sent out from either of the paper feeding sections 30a through 30c, for instance, the hand paper feeding section 30a, by a paper feeding roller 37, is inserted into a pair of resist rollers 39 through the feed roller 37a and temporarily comes to a stop. The resist rollers 39 send out a sheet of image transferring paper to the transfer section 36 at an appointed timing from starting of the optical system including the lamp unit shown by the solid line position (home position). A toner image on a sheet of image transferring paper to which the toner image is transferred by the transfer section 36 is fixed at a fixing section 38. A pair of feed rollers 41a, a changer guide 40, a pair of feed rollers 41b, a changer guide 42, a delivery roller 43 and a delivery tray 44 are installed at the downstream side of the fixing section 38. The changer guide 40 swings, centering around an axis 45, between the solid line position 40 and the two-dashed line position 40a, thereby causing the transferring direction of a sheet of image transferring paper to be changed. With the changer guide 40 located at the solid line position 40, the sheet of image transferring paper which comes out from the fixing section 38 is delivered to the delivery tray 44 by means of the delivery roller 43 through the pairs of feed rollers 41a and 41b and the changer guide 42. When making a transfer processing for only the mark described on the recording medium 1 or a document placed on the document table 4 only one time, the changer guide 40 is changed to the solid line position as shown in the above, and the sheet of image transferring paper receives only one-time transfer processing and is delivered to the delivery tray 44. On the other hand, in the case of composing the image of a mark or the document onto the sheet of image transferring paper which has received transfer processing one time at the transfer section 36 as shown in the above, the position of the changer guide 40 is changed to the two-dashed line position 40a before the sheet of image transferring paper is sent out by means of the pair of feed rollers 41a after having received the first-time transfer processing at the transfer section 36 and having received the fixing processing at the fixing section 38. For this reason, the sheet of image transferring paper sent out by the pair of feed roller 41a is guided by the changer guide 40 and goes into a guide duct 46 arranged at the lower part. Furthermore, it is fed to an intermediate tray 48 from a pair of feed rollers 47. The leading edge of the sheet of image transferring paper which is sent out from the intermediate tray 48 through a pre-feed roller 49 and a paper re-feed roller 50 is inserted into the pair of resist rollers 39 by a pair of feed rollers 51 again and the sheet of image transferring paper comes to a stop. Hereafter, the exposure scanning for a document or a mark on the recording medium 1 is executed by the lamp unit 28, and the pair of resist rollers 39 begin to rotate in timing therewith, thereby causing a new image to be composed and transferred to the pre-transferred image. At this time, the changer guide 40 is changed to the position indicated with the solid line 40, and the sheet of image transferring paper on which a new image has been composed and transferred is sent to the fixing section 38 by a transfer belt 37b. After the toner image is fixed, the sheet of image transferring paper is delivered to the delivery tray 44 from the delivery roller 43 through the pair of feed rollers 41a, the changer guide 40, the pair of feed rollers 41b, and the changer guide 42. Next, the features of the analog image forming apparatus are explained in detail. A recording medium 1 indicated in Fig. 1 is for physically describing a plurality of optional marks, and, for instance, is composed of a detachable resin-based white belt. Therefore, even though a mark is described on the surface of the recording medium by a felt pen or a stamping method, the mark is erasable by wiping it off. So, it can be continuously used. Also, the recording medium 1 is composed of for instance a paper belt. If it is replaced with a new paper belt after all the area on the recording medium is filled with marks, the deleting work of the marks described on the recoding medium can be saved. The recording medium 1 is arranged outside a document placing area 4a of the document pusher 5 attached to the document table 4 indicated in Fig. 1 (d) and at the forward side of the sub scanning direction (the direction of an arrow 6) to the document from the home position of the optical system and is suspended to be endless on a pair of rollers 7 and 8 (Fig. 1 (c)) which are oppositely arranged over the main scanning direction at a right angle to the arrow 6) of the document. A tablet 19 which is an already-known position designating means used for such edition as trimming, masking, etc. is provided in the document placing area 4a of the document pusher 5. An opening 5a for describing a mark is provided on the document pusher 5 corresponding to the upper portion of the recording medium 1, and a stamp plate 9 for supporting the recording medium 1 when describing a mark is provided at the underside of the recording medium corresponding to the opening 5a. The recording medium 1 is jogged or inched one after another per lengthwise dimension corresponding to the opening 5a by means of a stepping motor 10 which rotates the roller 7 whenever operating an increment switch 20 indicated in Fig. 1 (d). In this case, the rollers 7 and 8, and the stepping motor 10 constitute the mark travelling mechanism 2 which drives and moves the recording medium 1. Mark selecting means 3 is provided for selecting one or two or more optional marks in a mark scanning area 4b (Figs. 1(b), 1(d) and 1(e)) of a plurality of marks described on the recording medium and is provided with a singularity mark changer switch 11 and a plurality mark changer switch 12. By operating an optional numeral key of ten numeral keys 13 arranged aside of the recording medium 1 after having operated the singularity mark changer switch 11, the mark described on the recording medium 1 corresponding to the key is accordingly selected. In this case, it is supposed that an operator understands the relationship of correspondence between respective keys of ten numeral keys and the marks corresponding thereto. On the other hand, if a key corresponding to the leading mark of consecutive marks and a key corresponding to the ending mark of the consecutive marks are pressed down after having operated the plurality mark changer switch 12, a plurality of consecutive marks in the area which is designated by these keys are accordingly selected. In this case, ten numerals keys (not illustrated herein) which are provided in advance in an operation board 14 of the analog image forming apparatus can be also utilized instead of the above ten numeral keys 13. As a matter of course, the singularity mark changer switch 11 and the plurality mark changer switch 12 can be omitted by getting rid of such a feature as enabling two or more consecutive optional marks in the mark scanning area to be selected and constituting the system so that only a single mark can be usually selected. In the embodiment, the recording medium 1 must be moved by the mark travelling mechanism and the selected mark must be moved to the position of transfer in the sub scanning direction in order to transfer the mark selected by the mark selecting means to any optional position on the sheet of image transferring paper. The mark is moved to the position in which the ratio of magnification is taken into consideration in other cases than the equal ratio (control means). In order to move the mark to an optionally appointed position, it is necessary to decide the position of the recording medium 1 in the initial state of transfer processing. In this case, the initial position of the recording medium 1 is decided through detecting a reference line 17 provided on the recording medium 1 by for instance a reflection type phototube sensor 18. A mark described on the recording medium 1 through the opening 5a can be moved to any optionally selected position which can be scanned by the optical system, by driving the stepping motor 10, standardizing the position of the reference line 17. Also in this case, presence or absence of a mark on the recording medium 1 is judged when incrementally moving the recording medium 1, by providing, for instance, a CCD (mark detecting means) for detecting the shape of a mark on the recording medium 1 instead of the phototube sensor 18 , and another mark can be described on the recording medium 1 as automatically stopping the blank area, corresponding to the opening 5a, skipping the area on which marks have been already described. Furthermore, if the mark detecting means is utilized, the shape of a mark on the recording medium 1 can be directly detected, thereby causing the recording medium 1 not to be driven by standardizing the position of the reference line 17 by means of the phototube sensor 18 and causing the recording medium 1 to be quickly driven and travelled to an optional position in the main scanning direction which can be scanned by the optical system with reference to the position of the mark. When the image of a mark is transferred to the sheet of image transferring paper, the paper feed timing for exposure scanning is adjusted. As a result, the position of describing (transferring) of the mark in relation to the sub scanning direction of the document is decided. The means for realizing such a feature is a paper feed timing adjusting means, and for instance it is realized by software or a timing circuit. According to the amount of the paper feed timing adjustment by the paper feed timing adjusting means and the position of a mark positioned by the control means in the main scanning direction, other images than in the mark portion selected by the mark selecting means are erased on the photosensitive body, and a feature for extracting only the image of the selected marks is the mark extracting means. As a result, unnecessary marks can be prevented from being transferred to the sheet of image transferring paper. In this case, there are the following ways to embody the mark extracting means, i.e., (1) providing a blank lamp 22 at the portions on the surface of the photosensitive body 33 corresponding to other images than the selected mark portions (refer to Fig. 6), (2) not bringing the exposed light of particular portions to the surface of the photosensitive body by means of a shutter, and (3) changing the width of charging of an electrifying charger by means of a shutter, etc. Furthermore, in the apparatus according to this embodiment, the control means is so composed as to include a procedure for appointing the position of transferring of a mark and a procedure for driving the recording medium 1 up to the appointed position by controlling the mark travelling mechanism 2. The position of transferring of the selected mark is appointed by operating the tablet 19 arranged on the document pusher 5, and the position of transferring of the mark is decided by the X-Y coordinate system by pointing out the appointed position on the surface of the tablet 19 with a stylus pen 19a. Also, in the apparatus of this embodiment as shown in Fig. 1 (d), the singularity mark changer switch 11, the plurality mark changer switch 12, the ten numerals keys 13, the increment switch 20 for jogging or inching the recording medium 1 pitch by pitch (equivalent to the dimension in relation to the lengthwise direction of the opening 5a) and the tablet 19 are arranged on the document pusher 5. In the case that such a configuration is employed, parts having a function to transfer other marks than the document images onto a sheet of image transferring paper can be independently sold. It is preferable to extend the option of configuration thereof. Consecutively, with reference to Fig. 3 (a), (b) and (c), the procedure for transferring the images of documents and the images of marks onto a sheet of image transferring paper by using the analog image forming apparatus is explained below; S1, S2, .... in these Figures show respective steps of action. Firstly, a desired mark is manually described on the recording medium 1 through the opening 5a of the document pusher 5. One or more of such marks can be described through the opening 5a on the recording medium 1 which is advanced pitch by pitch whenever operating the increment switch 20. As a desired mark is described on the recording medium 1 as shown in the above, a mark to be transferred to a sheet of image transferring paper is selected in step S1 (corresponding to the mark selecting means). In this case, when the singularity mark changer switch 11 is operated (Fig. 3(b) step S1a), a single mark to be transferred is selected by operating the key of a number corresponding to the mark to be transferred, of the ten numeral keys 13 which expresses the sequence of describing of the plurality of marks (Step S1b). On the other hand, when the plurality mark changer switch 12 is operated (Fig. 3 (c) Step S1c), consecutively, a key of the number corresponding to the leading mark of the consecutive marks of the ten numeral keys 13 is operated (S1d) and furthermore a key of the number corresponding to the ending mark of the consecutive marks is operated (S1e). As a result, all the marks in the area pointed out by the ten numeral keys are selected. A mark can be selected by a selector switch described below instead of ten numeral keys. Namely, such a construction that an appointed mark is moved to the position in alignment with the opening 5a by using the increment switch 20 and the appointed mark can be selected by operating a selector switch (not illustrated) or a transfer button is available instead of selecting a mark to be transferred by operating the ten numeral keys. As a mark to be transferred is selected as shown in the above, the transferring position on the sheet of image transferring paper is consecutively pointed out in step S2. For instance, the transferring position of the mark on the sheet of image transferring paper is decided on the X-Y coordinate system by pointing out the transferring position by means the stylus pen 19a on the tablet 19 shown in Fig. 2. Completion of pointing out the transferring position on the tablet 19 is notified to a control device 15 including a memory 16 by pressing down the selector switch or a transfer button provided in the vicinity of the tablet 19, and a mark which exists in the opening 5a is selected by pressing down these switches and/or buttons. A document is placed on the document table 4 in step S3, and the transfer button is operated in step S4. A document can be placed on the document table 4 prior to the action in step S1. Continuously, in step S5, the first-time transfer processing is executed (corresponding to the usual transfer means). The optical system 27 moves to the document placed on the document table 4, and the image thereof is scanned by the optical system 27 and is transferred to the sheet of image transferring paper. Thereafter, the sheet of image transferring paper is temporarily stored in the intermediate tray 48. Continuously, in step S6, the recording medium 1 is driven and transferred (corresponding to the control means) by controlling and driving the stepping motor 10. Namely, the mark selected in step S1 is moved to the transferring position in relation to the main scanning direction, appointed by using the tablet 19 in step S2, which is the position scannable by the optical system 27. So, in step S7, the sheet of image transferring paper which is temporarily stored in the intermediate tray 48 is fed again. At the same time, "ON" timing of a paper feed clutch 21 which can control rotation and stop of the pair of resist rollers 39 for the exposure scanning by the optical system 27 is adjusted by the distance in the sub scanning direction 6 of the mark transfer position appointed by using the tablet, thereby causing the mark transfer position on the sheet of image transferring paper in the sub scanning direction to be decided. When the blank lamp 22 is controlled, rejection exposure is given to the surface of the photosensitive body 33 corresponding to other images than those at the selected mark portion according to the amount of "ON" timing adjustment of the paper feed clutch 21 and the position of the mark specified in step S6 in the main scanning direction. As a result, only the necessary mark images can be transferred to the position on the sheet of image transferring paper appointed by the tablet 19. The mark images can be composed together with the document images transferred in step S5. Therefore, in this preferred embodiment, an optional mark can be transferred and copied on the sheet of image transferring paper in a remarkably simple manner without re-inserting a card on which a mark is described in the case of a conventionally known apparatus. In the above embodiment, the mark images are composed to the document images by the usual transfer means (Step S5). However, if the transfer processing in step S5 is omitted, independent mark image can be transferred on the sheet of image transferring paper. Also, in an analog image forming apparatus according to the present invention, all the marks described in the recording medium 1 can be easily seen by installing a transparent sight window 23 at the position of installation of the recording medium 1 as shown in Fig. 4, thereby causing an optional mark to be selected easily. Furthermore, in an analog image forming apparatus according to the present invention, if as shown in Fig. 5 the ten numeral keys 13 can be omitted when a transparent touch panel 24 by which all the marks described in the recording medium 1 can be sighted is provided, and when such a construction that an optional mark can be selected by operating the portion on the transparent touch panel 24 corresponding to the mark, then it is possible to select any optional mark in further simple manner. Still furthermore, in an analog image forming apparatus according to the present invention, the principal parts, including the recording medium 1, of a feature by which other marks than the document images can be transferred to to the sheet of image transferring paper can be removably installed on the document pusher 5. Moreover, in the embodiment, a specified mode for always transferring a mark, for instance, at the central position in the main scanning direction at the forward end or the backward end of the sheet of image transferring paper can be provided in addition to specifying the mark transfer position on the X-Y coordinate system by means of position appointing means like the tablet 19. In the embodiment explained above, as it is necessary to make exposure scanning two times in all for the document and the mark when composing a mark image to the document image, the power consumption is large and the supporting members of the optical system is subjected to much wearing. Still further, the error of the transfer positioning will be increased according to the long distance between the starting point of scanning of the optical system and the recording medium 1. Besides, in the embodiment explained above, the transfer processing at the same magnification between the mark images on the recording medium 1 and the mark image to be transferred has been described. However, in actual image processing, it is highly recommended that the magnification of the marks is variable in relation to the document images to be composed. For this reason, the second embodiment explained hereinafter relates to an analog image forming apparatus in which the document images can be composed to the mark images only with one-time exposure scanning, and the magnification of the mark images is variable. Also, the factors and members which are common to the constitution of the first preferred embodiment are given the same reference numbers and the explanation thereof is omitted. In the second preferred embodiment, a home position switch 26 (H.P. SW2, the second detecting means) is provided, as shown in Fig. 1 (e), (f) and Fig. 2, in addition to a home position switch 25 (H.P. SW1, the first detecting means) for detecting the starting point of the travelling of the light source when the light source makes exposure scanning for usual documents. The home position switch 25 is for detecting the first origin position of scanning of the optical system 27 (in details, the lamp unit 28 which constitutes the optical system 27) for the document placing area 4a on the document table 4 which is divided into the document placing area 4a and the mark scanning area 4b. For instance, a contact type limit switch or a non-contact type reflection phototube sensor, etc. may be used as this home position switch 25. The home position switch 26 is arranged in the vicinity of the boundary portion between the document placing area 4a and the mark scanning area 4b and is for detecting the second origin position of scanning of the optical system 27 for the mark scanning area 4b. As well as the home position switch 25, for instance, a contact type limit switch or a non-contact type reflection phototube sensor, etc. may be used as home position switch 26. Consecutively, the ensuing explanation copes with the procedure in the case of transferring the document images and the mark images on a sheet of image transferring paper by the analog image forming apparatus on the basis of Fig. 3 (b), (c), (d) and (e). S1, S2, , and N1, N2, .... in the Figures show the steps of respective actions. The marks are described on the recording medium 1 and those to be transferred are selected (N1, S1a, S1b, S1c, S1d, S1e) by the same operation as those in the first preferred embodiment. Next, the transfer position of the mark is pointed out (N2). In the case of the transfer in the same magnification, the operation thereof is the same as that in the first preferred embodiment. When transferring the mark images on a sheet of image transferring paper with the mark magnified or reduced, the processing is executed in accordance with the following procedure shown in Fig. 3 (e). Namely, the ratio of magnification or reduction of the mark images to the sheet of image transferring paper is firstly pointed out (Step S2a) by operating the ten numeral keys on the operation panel 14. Consecutively, the reference point on the sheet of image transferring paper on which the mark images are to be transferred is appointed (Step S2b) by indicating the transfer position at one point by means of a stylus pen on the tablet as well as in the above case. It is possible to make the balance of the mark images reasonable to the document images by optionally magnifying or reducing the size of the mark to be transferred to the sheet of image transferring paper as shown in the above. As the ratio of magnification or reduction (including the same ratio of magnification) of the mark and the reference point thereof are pointed out, a document is placed on the document table 4 in step N3 and the transfer button is operated in step N4. Also, in this case, a document can be placed on the document table 4 prior to action in step N1. Then, the recording medium 1 is driven and moved by controlling and driving the stepping motor 10 in step N5. The mark selected in step N1 is moved to the transfer position, where the mark can be scanned by the optical system 27, in relation to the main scanning direction responsive to the ratio of magnification or reduction and the reference point appointed in step N2. In this case, if the center position pertaining to the sub scanning direction of a mark on the recording medium 1 is selected to the reference point, it is enough that even though the ratio of magnification or reduction is not the same ratio the recording medium 1 is simply moved to the center of the composition position on the document in the main scanning direction. However, in the sub scanning direction, the transfer position must be moved in response to the ratio of magnification or reduction by adjusting the paper feed timing, which is described later. In case that the reference point is biased in the sub scanning direction, for instance, the reference point is set at the shoulder portion of a mark on the recording medium 1, the travelling position of the recording medium 1 in the main scanning direction should be computed and operated in taking the ratio of magnification or reduction into consideration, and it is necessary to further adjust the paper feed timing of a sheet of image transferring paper, described later, only by the amount of biasing in the sub scanning direction by the set ratio of magnification or reduction. Subsequently, the optical system 27 is moved for scanning from the first origin position of scanning of the optical system 27 detected by the home position switch 25 in step N6, and the image of a document placed in the document placing area 4a is transferred to a sheet of image transferring paper. The transfer operation in this step N6 has no difference from usual transfer processing and is the same as those of the usual transfer means in the first preferred embodiment on which the ratio of magnification or reduction has been taken into consideration. However, in this preferred embodiment, the optical system 27 does not return in the direction of the home position switch 25 but goes toward the mark scanning area 4b. Namely, the lamp unit 28 of the optical system 27 temporarily makes a pause at the position detected by the home position switch 26 (Steps N7 and N8) to cause the sheet of image transferring paper to be temporarily accommodated in the intermediate tray 48 (outside the Figure). Consecutively, the sheet of image transferring paper which is temporarily accommodated in the intermediate tray 48 is sent out toward the photosensitive body again and it temporarily comes to a stop when the leading edge thereof is inserted into the pair of resist rollers 39 (Step N9). In step N10 the paper feed timing of the sheet of image transferring paper is adjusted. At the same time, the group of lens 29 and mirrors 32d, 32e, etc. for changing the ratio of magnification or reduction, which constitute the optical system 27, are moved and adjusted in response to the ratio of magnification or reduction. The "ON" timing of the paper feed clutch 21 for the exposure scanning by the optical system 27 is adjusted, and the reference point on the mark on the sheet of image transferring paper for the sub scanning direction and the transferring position according to the ratio of magnification or reduction are decided. In step N11, the sheet of image transferring paper is fed again. At the same time, the lamp unit 28 is subjected to scanning from the second origin position of scanning of the lamp unit 28 of the optical system 27 detected by the home position switch 26, thereby causing the selected mark to be transferred to an appointed position (i.e., the area on the basis of the reference point) on the sheet of image transferring paper on which the document image has been transferred. The blank lamp 22 is controlled when making the transfer processing, and the rejection exposure is made at the portion of the surface of the photosensitive body 33 corresponding to other images than those in the mark portion selected in the above, in response to the amount of "ON" timing adjustment of the paper feed clutch 21 and the position of the mark specified in step N5 in the main scanning direction. As a result, only the mark image of the required ratio of magnification or reduction can be transferred to the desired position, pointed out by the tablet 19, on the sheet of image transferring paper. Thereafter, the lamp unit 28 of the optical system 27 returns to the position detected by the home position switch 25 (in the steps N12 and N13). Therefore, in this preferred embodiment, the image of a document is transferred to the sheet of image transferring paper by letting the lamp unit 28 scan from the first origin position of scanning of the lamp unit 28 of the optical system 27, and furthermore the mark images can be transferred to the sheet of image transferring paper by letting the lamp unit 28 scan from the second origin position of scanning without that the lamp unit 28 returns to the first origin position of scanning. Therefore, the time required for the lamp unit 28 to travel over the distance "L" in the lengthwise direction of the document placing area 4a can be saved, thereby causing the time of actuation of lamp unit 28 and the distance of action thereof to be shortened. Also, as respective scanning actions of the lamp unit 28 are started from each of the origin position of scanning detected by the home position switches 25 and 26 in response to each of the images of the document and the mark, respectively, it is possible to prevent the positional displacement of the mark image to the document image, which is apt to occur when only the origin position of scanning detected by the home position switch 25 is used as origin position of scanning. As a result, the image of the mark can be very highly accurately positioned on the sheet of image transferring paper in relation to the image of the document for the sake of transfer processing. In the second embodiment, the travelling amount of the recording medium 1, i.e., of the mark, is determined by pointing out the reference position for transferring the mark and the ratio of magnification or reduction when making a transfer with the ratio of magnification or reduction changed. However, the ratio of magnification or reduction can be operated by pointing out the mark scanning area on the sheet of image transferring paper, and the travelling amount of the mark can be determined on the basis of the ratio of magnification or reduction operated therein. Means for accomplishing this feature is the area appointing means and the magnification (or reduction) ratio operating means described below. The area appointing means is embodied by the tablet 19 as position appointing means described later in the apparatus according to this embodiment. In this case, the transferring position on the sheet of image transferring paper is specified by pointing out two area appointing points of, for instance, the left upper edge and the right lower edge of the area of an mark image to be transferred. Also, the transferring position can be specified in the X-Y coordinate system by operating the ten numeral keys on the operation panel 14 instead of the tablet 19. The magnification (or reduction) ratio operating means is for operating the ratio of magnification or reduction of the mark image to the sheet of image transferring paper on the basis of the transferring position of the mark appointed by the area appointing means. This ratio of magnification or reduction can be computed and operated by comparing the area of the opening 5a and the area of a mark image to be transferred to the sheet of image transferring paper. In details, the area appointing means and the magnification (or reduction) ratio operating means are realized as the steps S2c and S2d in Fig. 3 (f), i.e., as appointing procedure of the transferring position (area) of the selected mark on the sheet of image transferring paper. Firstly, as well as in the above case, the transferring area on the sheet of image transferring paper, on which the image of the mark is to be transferred, is pointed out by indicating the transferring position at two points by using the stylus pen 19a on the tablet 19 (Step S2c in Fig. 3 (f)). Subsequently, in step S2d, the ratio of magnification or reduction of the image of the mark is calculated. As shown in the above, the balance of the image of the mark to the image of the document is made reasonable by making the size of the mark to be transferred to the sheet of image transferring paper optionally variable. As the ratio of magnification or reduction (including the same magnification) of the image of the mark and the transferring area are determined, a document is placed on the document table 4 in step N3, and the transfer button is operated in step N4. Then, the processing from N5 through N13 is executed as well as in the above description.

Claims: An analog image forming apparatus (A) in which an optical system (27) moves relatively to a document, thereby causing an image of the document to be scanned by the optical system and to be transferred to a sheet of image transferring paper, comprising: a belt-like recording medium (1) in which a plurality of optional marks are physically described; mark selecting means (3) for selecting one or more marks of the plurality of the marks described in the recording medium (1); a mark travelling mechanism (2) for driving and travelling the belt-like recording medium (1) so that a mark selected by the mark selecting means (3) can be moved to an optional position; control means (15, 18, 19) for controlling the mark travelling mechanism (2) and for driving the recording medium (1) to the optional position corresponding to the selected mark; and mark transfer means (27, 33 to 36) for transferring to an appointed position on a sheet of image transferring paper, an image of the selected mark or marks. An image forming apparatus as claimed in claim 1, further comprising: paper feed timing adjusting means for adjusting the timing of paper feed for the exposure scanning and for feeding paper when making an image transfer by said mark transfer means; and mark extracting means (22) for extracting an image of the portion of a mark selected by the mark selecting means (3) according to the timing adjustment amount by the paper feed timing adjusting means and the position of a mark positioned in the main scanning directing by said control means (15, 18, 19). An image forming apparatus as claimed in claim 2, further comprising document transfer means (27, 33 to 36) for also transferring the image of a document onto to the sheet of image transferring paper. An image forming apparatus as claimed in claim 3 further comprising: first detecting means (25) for detecting a first origin position of scanning of the optical system (27) to a document placing area (4a) on a document table (4) which is divided into the document placing area (4a) and a mark scanning area (4b); and second detecting means (26) placed in the vicinity of the boundary portion between the document placing area (4a) and the mark scanning area (4b) for detecting a second origin position of scanning of the optical system (27) to the mark scanning area (4b); the recording medium (1) being arranged in the mark scanning area (4b); the document transfer means (27, 33 to 36) being designed for transferring the image of a document placed in the document placing area (4a) onto a sheet of image transferring paper by letting the optical system (27) scan from the first origin position of scanning of the optical system (27), which is detected by the first detecting means (25), and the mark transfer means being designed for consecutively transferring the image of a mark described on the recording medium (1) onto the sheet of image transferring paper on which the image of the document is described by the document transfer means, by letting the optical system (27) scan from the second origin position of scanning of the optical system (27), which is detected by the second detecting means (26). An image forming apparatus as claimed in any one of claims 2 to 4, further comprising mark detecting means for detecting the shape of a mark on the recording medium (1), said control means (15, 18, 19) controlling the mark travelling mechanism (2) on the basis of the results of detecting the shape of the mark by the mark detecting means. An image forming apparatus as claimed in any one of the preceding claims, wherein the recording medium (1) is arranged on a document pusher (5). An image forming apparatus as claimed in any one of the preceding claims, wherein the recording medium (1) is arranged at the forward side in the subscanning direction (6) for the document. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark transfer means (27, 33 to 36) includes different magnification or reduction means for transferring a mark image at a different ratio of magnification or reduction appointed when transferring a mark. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark selecting means (3) includes changer switches (11, 12) for a single mark and plural marks. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark selecting means (3) includes ten numeral keys (13) for appointing the number of marks. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark selecting means (3) comprises an input switch including a transfer button, said mark selecting means being so composed that a mark located at an appointed position can be selected by pressing down the input switch. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark selecting means (3) includes an opening (5a) by which only a single mark can be seen, said mark selecting means being so composed that the mark which can be seen through the opening (5a) can be selected. An image forming apparatus as claimed in claim 12, wherein the opening (5a) is formed on the upper surface of the document pusher (5). An image forming apparatus as claimed in any one of the preceding claims, wherein the mark selecting means (3) includes a selector switch which informs an operator of completion of the inputting by a tablet (19), the mark selecting means being so composed that the mark which is located at an appointed position can be selected when pressing down the selector switch. An image forming apparatus as claimed in any one of claims 1 to 11 and 14, wherein the mark selecting means (3) includes a transparent sight window through which all the marks facing toward an operator can be seen. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark travelling mechanism (2) includes an increment switch (20) by which the recording medium (1) can be driven and moved pitch by pitch by an appointed amount. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark travelling mechanism (2) comprises a set of rollers (7, 8) by which the recording medium (1) can be driven and moved. An image forming apparatus as claimed in any one of the preceding claims, wherein the mark travelling mechanism (2) includes a stepping motor (10) for moving the recording medium (1). An image forming apparatus as claimed in any one of the preceding claims, wherein the recording medium (1) is composed of a white endless belt. An image forming apparatus as claimed in any one of the preceding claims, wherein the recording medium (1), the mark selecting means (3) and the mark travelling mechanism (2) are provided at a document pusher (5). An image forming apparatus as claimed in any one of claims 1 to 19, wherein the recording medium (1), the mark selecting means (3), the mark travelling mechanism (2) and a tablet (19) are provided at a document pusher (5). An image forming apparatus as claimed in claim 2, wherein the mark extracting means is composed of a blank lamp (22). An image forming apparatus as claimed in any one of the preceding claims, wherein the control means includes a tablet (19) for appointing the travelling position of the selected mark in the main scanning direction. An image forming apparatus as claimed in claim 23, wherein the tablet (19) is formed on the upper surface of a document pusher (5). An image forming apparatus as claimed in any one of claims 1 to 22, wherein the control means includes a sensor (18) for reading a reference line (17) described on the recording medium (1), said control means being so composed that means for moving the recording medium to an appointed position, standardizing the signal coming from the sensor (18), can be provided therein. An image forming apparatus as claimed in any one of the preceding claims, wherein automatic changing means (40) of image transferring paper is provided for composed processing of a mark image or a document image by the mark transfer means or the document transfer means by automatically supplying again a sheet of image transferring paper to a paper supplying portion on which a document image or a mark image is transferred.

Inventors: HORI KAZUTO, OHATA YOSUKE, TONE EIICHI, HORI, KAZUTO, OHATA, YOSUKE, TONE, EIICHI
Applicants: MITA INDUSTRIAL CO LTD, MITA INDUSTRIAL CO. LTD.
Application year: 1990
Main classification: G03G15
IPC codes: G03G15, H04N1