Abstract:
An image forming apparatus includes an image forming mechanism for forming an image and a matrix circuit having connected thereto a plurality of keys including an initiating key for instructing the start of image formation and a stop key for interrupting image formation. The image forming apparatus further includes a controller for controlling image formation by the image forming mechanism in accordance with a control sequence and a memory containing a program for sensing key input of the matrix circuit. Prior to the start of image formation, the controller executes the program for sensing key input of the matrix circuit and executes the control sequence in response to the sensing input of the initiating key. During image formation, the controller executes the program for sensing key input of the matrix circuit such that sensing whether the stop key has been input is executed without sensing whether the initiating key has been input.

Description:
This application is a continuation of application Ser. No. 07/666,737, filed Mar. 8, 1991, now abandoned which is a division of application Ser. No. 07/405,487, filed Sep. 11, 1989, now U.S. Pat. No. 5,089,074, which was a continuation of application Ser. No. 07/008,119, filed Jan. 23, 1987, now abandoned, which was a continuation of application Ser. No. 06/675,650, filed Nov. 28, 1984, now abandoned, which was a continuation of application Ser. No. 06/288,211, filed Jul. 29, 1981, now abandoned, which was a division of application Ser. No. 05/882,614, filed Mar. 1, 1978, now U.S. Pat. No. 4,312,587. This application is related to application Ser. No. 07/456,578, filed Dec. 29, 1989, pending, which was a continuation of application Ser. No. 07/155,729, filed Feb. 16, 1988, now abandoned, which was a division of application Ser. No. 06/659,784, filed Oct. 11, 1984, now U.S. Pat. No. 4,763,164, issued Aug. 9, 1988, which was a division of application Ser. No. 06/288,211, filed Jul. 29, 1981, now abandoned, which was a division of said Ser. No. 06/882,614, now U.S. Pat. No. 4,312,587. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to an image forming apparatus adapted for use for example in a copier or a printer. 
     2. Description of the Prior Art 
     The process sequence control or timing control conventionally employed for example in copiers for controlling the process effecting means (equipment required for performing the steps of charging, imagewise exposure, development, transfer, fixing etc.) has been achieved by combinations of relay circuits or so-called hard wire logic circuits. 
     Such relay circuits or logic circuits, being designed and structured for a particular performance, require cumbersome redesigning and rewiring if there is any change in required performance. Also such circuits, if required to control several devices or to perform a complex control, result in extremely complicated structure and wirings, thus deteriorating the reliability and rendering the maintenance and inspection difficult. 
     Though there is also known a process sequence control system in which the sequence functions are pre-programmed, the drawback in complexity of circuit composition has not been solved. 
     SUMMARY OF THE INVENTION 
     An object of the present invention is to provide an image forming apparatus of a reduced dimension, which is capable of performing plural functions thereby avoiding the above-mentioned drawbacks. 
     Another object of the present invention is to provide an improved image forming apparatus capable of performing process sequence control according to a stored program for controlling the functions of equipment in response to the instructions and detections. 
     Another object of the present invention is to provide an improved image forming apparatus provided with various instructing and displaying devices for operator. 
     Another object of the present invention is to provide an image forming apparatus of a transfer process with an improved timing control for exposure and transfer sheet feeding. 
     Another object of the present invention is to provide an improvement in a copying apparatus for copying thin and thick originals with an elevated efficiency. 
     Another object of the present invention is to provide an improvement in a copying apparatus provided with a plurality of cassettes accommodating recording web. 
     Another object of the present invention is to provide an image forming apparatus with a control system utilizing enlarged computer performance. 
     Another object of the present invention is to provide a copying apparatus provided with a moving optical system for exposure achieving a highly stable function with an elevated precision. 
     Another object of the present invention is to provide a copying apparatus provided with a transfer sheet feeding means achieving a precise and stable function. 
     Another object of the present invention is to provide a small table-top copier of multiple functions. 
     The above-mentioned and other objects will be achieved by the embodiments to be described in the following. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a cross sectional view of an example of a copier wherein the present invention is applicable; 
     FIG. 2 is a cross sectional view of a paper feed section thereof wherein a manually inserted cassette is utilized; 
     FIG. 3 is a cross sectional view of an optical system and an illuminating section of the present invention; 
     FIG. 4 is a perspective view showing an accuride utilized as a linear guide device; 
     FIG. 5 is a perspective view of a drive-guide section of the optical system; 
     FIGS. 6 and 7 are cross sectional views of the illuminating section; 
     FIG. 8 is a schematic drawing of a conventional linear guide device; 
     FIG. 9 is a cross sectional view of the paper feed section; 
     FIG. 10 is a perspective view thereof; 
     FIG. 11 is a perspective view of a clutch mechanism for controlling a paper feed device; 
     FIG. 12 is a perspective view thereof; 
     FIG. 13 is a cross sectional view of a conventional paper feed control clutch; 
     FIG. 14 is a perspective view of a loop forming guide plate; 
     FIG. 15 is an elevation view of a copy control section; 
     FIGS. 16 (which comprises FIGS. 16A, 16B and 16C), 17 (which comprises FIGS. 17A, 17B and 17C), 18 (which comprises FIGS. 18A and 18B) and 19 (which comprises FIGS. 19A and 19B) are flow charts of sequence control; 
     FIG. 20 (which comprises FIGS. 20A and 20B) is a flow chart of key entry; 
     FIG. 21 (which comprises FIGS. 21A and 21B) is a time chart in book mode; 
     FIGS. 22 and 23 are time charts in sheet mode; 
     FIG. 24 is a circuit diagram for achieving the time charts shown in FIGS. 22 and 23; 
     FIG. 25 is a control block diagram of the present invention wherein a computer is employed; 
     FIGS. 26(A) (which comprises FIGS. 26A&#39; and 26A&#34;), (B), (C), (D) and (E) are a circuit diagram, a name list, a pulse wave chart, a drawing of a cassette change cam, and a logic circuit, respectively, corresponding to FIG. 25; 
     FIG. 27 is a diagram of an embodiment of the matrix circuit in FIG. 26; 
     FIG. 28 is an internal circuit diagram of CPU in FIG. 26; 
     FIG. 29 is an illustration of register addresses of the RAM in FIG. 28; 
     FIG. 30 (including FIGS. 30A and 30B) are a partial flow chart of the control by CPU; and 
     FIGS. 311-1A through 31-1F, 31-2A through 312-2C, 313-3a through 31-3c, 314-4A through 31-4C, 315-5, 316-6A through 31-6C, and 31-7A through 317-7C) are flow charts of the control by CPU. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     (Machine) 
     Referring to FIG. 1, an original 1 is placed on a glass plate of an original table 2 constituting an original supporting face on the upper surface of the machine casing, and is subjected to a slit exposure by means of an optical system consisting of an illuminating lamp 3, a first mirror 4 displacing integrally therewith, a second mirror 5 displacing in a same direction as that of said first mirror 4 with a velocity half of that of said first mirror 4, a switching mirror 6, a lens 7 and a fixed mirror 8, thereby to form an image of said original onto a drum 9. 
     The surface of said drum 9, which is an endless photosensitive member comprising an insulating surface layer, a photoconductive layer and a conductive base, is electrostatically charged with a charger 10, and, upon reaching the exposure section 11, is exposed to the image of the original, combined with simultaneous charge elimination by means of a charge eliminator 12. 
     The photosensitive drum surface is successively subjected to a flush exposure by a flush exposure lamp 13 to form an electrostatic latent image on said surface, and is introduced into a developing station 14. 
     The development is conducted by wet process utilizing a developing roller 15. Successively the excessive developing liquid is squeezed by a post-charger 16. 
     Then the image formed on said drum 9 is transferred, by means of a transfer charger 17, onto a copy sheet 20 supplied from a feed section 18 or 19. 
     The copy sheet, after the transfer, is separated from the drum 9 in the separating section 21, then is fixed in a fixing section 22 and ejected by means of an ejecting roller 23 onto a tray 24. On the other hand the photosensitive drum surface is cleaned by a blade 25 maintained in pressure contact with said surface to remove remaining toner on said drum, and is thus prepared for the succeeding cycle. In case of copying a bound original, the switching mirror 6 is placed in a position represented by double-dot chain lines. 
     An automatic feed device 26 for sheet originals can be utilized when the switching mirror 6 is placed in the full-line position and the moving mirrors 4, 5 are placed at the right end (full-line positions). In this case the original passing through the exposure section 30 is illuminated by the lamp 3, and the image of said original is formed, by means of said switching mirror 6, lens 7 and fixed mirror 8, onto the drum 9. Said lamp 3 is same as that used for the bound original. The sheet originals 28 are stacked on an original table 27 of the automatic feed device 26, and an uppermost sheet is separated by means of a separating roller 29 and conveyed, by means of a series of feed rollers 31, 32, 33 and 34, through the exposure section 30 to the original tray 35. 
     Automatic continuous feeding of sheet originals can be achieved by said automatic feed device 26. Also by making the transfer speed of said feed rollers 31-34 somewhat faster than that of said separating system 29, it becomes possible to provide a gap between the succeeding sheet originals whereby the detection of the leading or trailing end of each sheet original is facilitated. 
     FIG. 1 shows a state wherein either a main cassette 73 or a sub-cassette 74 is usable, in connection therewith an upper or a lower feed roller 53 being actuated by means of a switching button. 
     FIG. 2 shows a state wherein a manually inserted cassette 75 is used. A cassette receiver 80 is articulated to an axis 76 fixed on the main body. 
     The manually inserted cassette 75 is slidably mounted on a cassette receiver 77, of which an extremity is fixed to a shaft 79 articulated on the main body. The shaft 79 is rendered swingable by means of a motor and the position thereof is selectable by means of a button. 
     Also as shown in FIG. 2, there are provided paper detecting elements (a lamp and a light-receiving element 103) in a position in the copy sheet path corresponding to the distance 1 between the exposure section and the transfer section. Upon detection of the trailing end of a copy sheet the optical system is reversed by a control to be explained later. 
     Now referring to FIGS. 3 to 7 there will be given an explanation on the guiding of the optical system and on the illuminating section. 
     The first mirror 4 is fixed on a supporting member 36 which is coupled with an inner member 37 of a linear guide known under a trade name &#34;Accuride&#34;. The Accuride is provided, as shown in FIG. 4, with a structure of a plurality of rollers 40 retained by a retainer 39 within two linear spaces each composed of grooves respectively formed on an inner member 37 and an outer member 38, whereby said inner member 37 is guided linearly with respect to said outer member 38. Said spaces confining said rollers 40 are dimensioned slightly smaller than the outer diameter thereof to give a predetermined pressure thereto whereby a relative movement without play being realized between said inner and outer members. As shown in FIG. 5, the outer member 38 covers the stroke of said first mirror 4 and is mounted to the machine frame (not shown) by means of mounting members 41. The inner member 37, being of a length substantially equal to that of mounting portion of the supporting member 36 for said first mirror, is guided over the full length of said outer member, riding switchingly on many rollers 40. On the other end of said supporting member 36 there is provided a roller 42 supported by a rail 43 fixed to the main body. 
     The second mirror 5 is fixed to a supporting member 44 which is in turn fixed to an inner member 37 of a downwardly fixed Accuride. A conventional linear guide system is schematically shown in FIG. 8, wherein mirror supporting members 36, 44 are linearly guided along a rod-shaped rail 45 supported on both ends thereof. Such system is unable to guide the mirrors stably and with high precision because (1) the rail 45, being only supported by the both ends thereof, is of a limited rigidity, (2) the span (l) of supporting portion particularly of the supporting member for the first mirror has to be limited in order to avoid mutual interference of supporting portions of said supporting members, and (3) a certain play is inevitable between the rod and the thrust bearing fitted thereon. In contrast thereto, the mechanism according to the present invention enables a stable reciprocating movement with an extremely high precision because (1) the Accuride can be fixed, at any portion thereof, to the main body, (2) the Accuride itself has a large dimension with an accordingly enlarged cross section, (3) the supporting span (l) can be made satisfactorily large as there is no mutual interference between the supporting portion of the Accuride and the supporting portions of supporting members for the first and second mirrors, and (4) there exists no play between the inner and outer members as explained before. 
     In FIG. 3 the full-lined positions are home positions from which the first and second mirrors 4, 5 are displaced to the right to perform scanning of the original, and, upon completion thereof, are returned to said home positions by means of a spring 45. In case a button for automatic feed device for sheet originals is actuated, the mirror 5 is displaced by means of a clutch motor to the chain-lined position at right and locked there as to be explained later. In this case the lamp 3 is displaced to a position allowing illumination of sheet originals. The details of related portion are shown in FIGS. 6 and 7. 
     FIG. 6 shows a state of scanning an original placed on the glass plate of original table 2. A supporting arm 46 fixed to the mirror supporting member 36 is provided with an axis 47, on which rotatably supported is an integral structure of an illuminating lamp 3, a reflector 48 and a supporting follower 49, wherein said follower 49 being provided at an end thereof with a roller 50 to enable the function thereof as a follower. FIG. 6 shows the details in the vicinity of the first mirror 4 during the copying of a bound original, while FIG. 7 shows the details in the vicinity of the illuminating section while the automatic feed device for sheet originals is in function. Upon displacement to the right-hand end, the first and second mirrors mutually approach due to the speed difference therebetween. The supporting member 44 for the second mirror is provided with a cam plate 51, which is traced by said roller 50 to direct the lamp 3 and the reflector 48 toward the exposure section 30 of a sheet original as shown in FIG. 7. 
     Now there will be given a detailed description on the paper feed section while referring to FIGS. 9, 10, 11 and 12. A paper feed roller 53 is fixed on an axis 54 thereof which is rotatably supported on an arm 55. Said arm 55 is provided with a fixed shaft 56 which is rotatably supported by the main frame, whereby said paper feed roller 53 is rendered rotatable around the shaft 56. The arm 55 is further provided with a spring 57 biasing said arm upwards. The axis 54 is provided with a follower roller following a cam 59 which is controlled by a single-rotation clutch adapted to making an intermediate stop during rotation, as explained in the following with reference to FIGS. 11 and 12. A cam shaft 60, passing through and supported by a frame 61, is provided with a pulley 63 which is driven by a motor through a belt 62. A spring clutch consisting of a drum portion 63 1  of said pulley 63, a clutch drum 64 fixed on said shaft 60, a clutch spring 65 and stop ring 66 is controlled by a solenoid 67. When the solenoid 67 is not energized, a lever 68 is located in a full-lined position in FIG. 11 to engage a projection 66 1  of said stop ring with said lever 68 thereby maintaining the clutch in disconnected position. Upon energizing of the solenoid 67 the lever 68 is displaced to a chain-lined position 68&#39; to release the engagement with said projection 66 1  whereby the clutch is connected to cause rotation of the cam 59. However, upon rotation of ca. 180°, another projection 66 2  becomes engaged with the lever 68&#39; to again disconnected the clutch, whereby the paper feed roller 53 is lowered by said cam 59 to a chain-lined position 53&#39; shown in FIG. 9. 
     In said lowered position a friction pulley 69 (FIG. 10) provided on one end of the paper feed roller shaft 54 comes into friction contact with a constantly driven capstan 70 (FIGS. 9, 10) to drive said paper feed roller 53. 
     Deactivation of solenoid 67 disengages the projection 66 2  from the lever to connect again the clutch, which is again disconnected upon returning to the original full-lined position in FIG. 11 after a rotation of ca. 180°. The clutch spring 65 is engaged at one end thereof with the stop ring 66 and at the other end thereof with the clutch drum 64 to maintain relative positional relationship between the projections 66 1 , 66 2  of the stop ring 66 and the cam 59 even after repeated clutch functions. 
     Such intermediate stop function of the cam is useful in increasing the design freedom, as the stopping can be freely selected by the period of solenoid activation. 
     FIG. 13 shows a conventional example of cam control mechanism for achieving such intermediate stop, wherein (66) is a stop ring, (66 1 ) and (66 2 ) are recesses for stopping said stop ring, and (b) and (c) are levers provided rotatable around a shaft (d) to engage with said recesses. A lever (a) with a pin (a&#39;) is rotated by a solenoid (67) around said shaft (d) to control said levers (b) and (c). Though a detailed explanation of the functions of such conventional system is omitted herein, the mechanism of the present invention is apparently simpler than such conventional system, and is therefore cheaper and more reliable. In contrast, the coventional system is inevitably of a lower reliability and of a higher cost due to the accumulated precisions (allowances) of component parts and to complex mutual movements of the component parts. 
     Now referring to FIG. 9, a paper sheet ejected from a cassette 73, 74 or 75 is advanced as indicated by double-dotted chain line P by the direction of ejection, rigidity and weight of paper, thus coming into contact with register rollers 52 which are in stopped state to form a loop P&#39;, and is further advanced upon start of rotation of said rollers 52. Such conventional paper feed mechanism often fails to form a desired loop P&#39; but results in paper jamming between the cassette 75 and a guide plate 71 resulting from formation of an inverted loop P&#34;. This is found out due to insufficient air supply between the paper and the guide plate 71 when the paper sheet is to be displaced from the state P to P&#39; whereby the paper remains being pressed in the position P. 
     In order to prevent such trouble, therefore, the guide plate 71 and the lower guide plate 72 are respectively provided with plural openings 71 1 , 72 1  for air supply as shown in FIG. 14. Said openings may be provided on either one of said guide plate. Though in the embodiment illustrated in FIG. 14 there are provided oblong openings in spreading arrangements toward the downstream in order to avoid engagement with paper sheet, a similar effect can also be obtained by providing plural circular openings. 
     (Control) 
     Now there will be given an explanation on the process control according to the present invention. The present invention is featured in that a high-speed continuous copying is rendered possible by controlling the functions of original feeding and other process means by the position of a transfer sheet after the start of feeding thereof, regardless of the size of said transfer sheet; further in that the process timing can be maintained unchanged through a process control achieved by reading a memory storing programmed process timing for book mode and sheet mode even when a mode is instructed after the process is started with another mode; further in that a limited number of output lines is effectively utilized in program control by counting the signals from load control signal lines and controlling the functions of plural loads; and further in that a limited number of input signal lines is effectively used to reduce the power consumption by combining the input means of instructing copy number and detecting copy state with the output signal lines of program control. 
     (Operation input section) 
     FIG. 15 shows a control for controlling the copier of the present invention. 
     120 is a display section for indicating the paper size in the cassette, 121 are display elements for indicating a selected cassette, 122 is a switch for selecting a manually inserted cassette, 123 is a switch for selecting the upper cassette, 124 is a switch for selecting the lower cassette, wherein said switches being retaining switches, each of which, upon actuation, turns off other switches. 125 are display elements for indicating the preset copy number and the number of copies made, 126 are ten keys for presetting the copy number, 127 is a clear key for correcting the preset copy number, 128W, 128P, 128L and 128J are display elements for respectively indicating Waiting, Paper lacking, Liquid lacking and Jammed paper, 129 is a stop button for temporarily interrupting the copying, 130 is a start button for book copy, and 131 is a start button for automatic feeding of sheet originals. 
     (Computer control) 
     In the following there will be given an explanation of an embodiment for performing the sequence and other controls of the above-mentioned copier by means of a microcomputer. 
     Now referring to FIG. 25 illustrating a block diagram of a circuitry therefor, 201 is a computer chip element, 202 is a matrix circuit for supplying input signals to said element 201, 203 is a means for detecting the state of the copier, 204 is a gate circuit for output signals from the computer, 205 is a driver circuit for driving the function elements, 208 is an oscillator assisting said drive, 206 is a decoder for performing displays by the signals from the computer, and 207 is a display means. 
     Now referring to FIG. 26 showing the details of the circuits in FIG. 25, the microcomputer chip 201, composed of an element TMS1000 manufactured by Texas Instruments, is provided with four data input terminals K1, K2, K4 and K8, output terminals θ1-θ4 as the output 1 and output terminals RO-R12 as the output 2. The output 1 terminals are used for indicating the copy number on the display elements D1 and D2, and connected thereto through a segment decoder. The output 2 terminals are utilized for function control of load elements and scanning of input matrix circuit. 
     (Peripheral circuits) 
     The aforementioned gate circuit is provided with so-called decoder function, by combining the signals from said output 2 terminals to obtain further diversified output signals. 
     Three display lamps for Feed Missing Display and for two Jam Displays are controlled by a single output terminal R10, but there is provided a counter for counting the clock signals for display from said terminal R10 to drive different lamps. 
     The gate circuit supplies the output signals from the CPU to the input matrix circuit and the output interface circuit. 
     Said interface circuit amplifies the signals from said gate circuit to drive solenoids and lamps. The AD loads are driven through triacs of which trigger signals are obtained as AND outputs with the output from the oscillator. 
     In the matrix circuit, the output signals from the output 2 terminals and from the gate circuit are utilized for scanning input for the matrix circuit. These scanning lines cross with the input lines to the microprocessor to constitute a matrix, and there are provided switches at the crossing points thereof corresponding to the input points (FIG. 27). 
     Thus, supposing that the numbers of scanning lines and microprocessor input lines are x and y respectively, the maximum possible number of switches is xy. 
     Said switches are composed of keyboard switches in the control section, microswitches for control signals, and other signal generating switches in various detection circuits (for example for detecting paper, for detecting master clocks etc.). Thus the input to the microprocessor (CPU) is performed upon release of an output signal of level 1 to the scanning lines. 
     Now the functions of the above-described circuit will be briefly explained in the following. The key input signals from the control section (signals from numeral ten keys, clear key, start keys) and from the jam reset switch are taken into the CPU upon receipt of the output terminal R0-R2 and R9 thereof and of a signal (signal indicating before start) from terminal R4 inverted by a gate 265. Said scanning signals are clock signal shown in FIG. 26(C). The 2-digit number thus taken into the CPU is stored in a RAM, and is displayed on the display elements D1, D2 by driving said elements alternately through the switching elements 266, 267 by alternate outputs from the terminals R11 and R12 and by selecting the necessary segments of said elements by the simultaneous 4-bit output from the terminals θ-θ4. Upon completion of preparatory step such as key entry, the signal from the terminal R4 starts the main motor and performs the pre-exposure. Also said signal from R4 designates the input switches in the matrix (for register signal RS generation, clock pulse CP generation and transfer paper discharge signal CPOS generation), thus enabling input of sequence timing signals when the drum is rotated by the main motor. Also the copy paper input signal CPIS and the stop signal STOP are supplied to the CPU utilizing the exposure lamp drive signal R6 and blank lamp drive signal R7. Under the condition that the drum is rotated, the primary charger, AC discharger, whole surface (flush) exposure lamp, paper feed plunger and register clutch are driven by the output signals from R0-R2. However said input instructions are blocked by the inverted signal of the R4 output signal. An output signal OS1 of a sheet original first detector 106 is supplied to the CPU upon receipt of an inverted output by a gate 268 of the paper feed plunger drive signal from R1 and of the sheet clutch drive signal from R1. Also the input into the CPU of a detection OS2 from a second detector 107 is achieved upon receipt of an AND output from a gate 270 receiving the register clutch drive signal from R2 and the transfer paper input signal. In this manner the input and output terminals of a limited number of a CPU can be effectively utilized. Also overlapped inputs can be prevented even if set signals from different output terminals are simultaneously supplied to the input matrix. 
     The optical system displacing motor is actuated by an AND output from a gate 271 receiving the output signals from the terminals R9 and R5. This will be later explained in detail in connection with the optical system position check in sheet mode. 
     The input signals relating to cassettes are supplied to the CPU by the set signal from the output terminal R3. The cassette selection signal and the cassette position detection signal are inputted by a short pulse from R3, and in case the manual cassette is selected (auxiliary cassette selection button AUX is ON), if the auxiliary cassette position detecting switch ACS is not ON, the set signal from R3 is continued until the switch ACS becomes ON whereby the cassette motor is switched on. Said motor does not start upon receipt of the initial set pulse. 
     The optical system home position detection signal OHP2 in sheet mode is inputted by the set signal from the output terminal R9. Upon identification of ON state thereof, the output terminals R5 and R9 are not set, and the optical system displacing motor is therefore not started. On the other hand, upon identification of OFF state thereof, the terminals R5 and R9 release set signals to activate the optical system displacing motor and the forward clutch to displace the optical system in a determined direction, and upon reaching ON state of aforementioned detection signal the output signal from R5 is reset to terminate the functions of the motor and clutch. 
     While the terminals R0-R2 and R9 release successive clock signals in case of key entry, namely prior to the start of copying, the output signals for controlling the various loads after the start of copying cycle are of a length required to switch off said loads. 
     If the transfer paper input signal CPIS is not detected upon release of set signal from R6, the terminal R10 releases a single pulse signal to give a Feed Missing Display. Also if the transfer paper is jammed and cannot be ejected (CPOS signal not detected upon R4 set signal), the terminal R10 releases two pulse signals to perform a Transfer Paper Jam Display. Furthermore if the sheet original is jammed so that the second detector OS2 is not actuated, the terminal R10 releases three pulses to perform a Sheet Original Jam Display. For this purpose there is provided a counter 272 of which output terminals 1, 2 and 3 release display drive signals, which are reset by a drum rotation stop signal R4 and a delayed signal after the power switch-on, namely by the start of drum rotation or by the power switch-on. 
     A condenser of 47 μF connected to the CPU constitutes a CPU reset circuit when the power is switched on. 
     Now the interior of the computer chip element will be explained in the following, while making reference to FIG. 28. ROM is a read-only memory storing the master program for performing the sequence of the copier in predetermined order in the addresses thereof, and allowing the contents thereof by designating the addresses thereof. In said ROM the programs (key entry program, equipment function program, machine ending program etc.) in binary codes are stored from an address 0 to a necessary final address. 
     RAM is a random access memory for storing the copy number and the control signal temporarily during the copying process. 
     KI is an input section for receiving external signals. ID is an instruction decoder for decoding the code signals from the ROM and dividing said code signals into finer control signals α for conducting each step. 
     ALU is an arithmetic logic unit for data processing, and Acc is an accumulator for storing the input and output data and the result of logic processing. R0 is register with a latch function, of which content is utilized as control output signals. 
     The CPU and the peripheral circuits explained above perform the key entry flow, process sequence flows in book and sheet modes, finishing mode flow etc. shown in FIGS. 16-20, according to the detailed flow chart by instruction codes shown in FIG. 31 and program code lists shown in Tabs. 1 and 2. 
     The ROM in CPU stores the above-mentioned lists in binary codes and in the order of steps, said codes being read at an extremely high speed (for example 10 μsec for each step in the flow shown in FIG. 31) to perform the above-mentioned flows. 
     For simplicity the power supplies to the CPU and the peripheral circuits and the clock pulse source for driving the CPU are omitted from the foregoing explanation. 
     (Key entry cycle) 
     FIG. 20 shows the interaction between the RAM and keys in the key entry flow. 
     Upon power on, all the outputs of microprocessor are cleared, and the content of RAM is cleared. Then a data &#34;1&#34; is stored in the location (0, 1) of the RAM (hereinafter called location 1) and the flow proceeds to the key entry cycle. 
     The key entry is performed by means of numeral keys 126, a Clear key 127 for copy number correction, a book mode copy start key 130, a sheet mode copy start key 131 and stop keys 129 for stop instructions. 
     The copy number can be selected with two digits up to 99, of which first order and second order are stored respectively in the RAM location 1 and location 2. If no key is depressed a number &#34;01&#34; is displayed due to the content RAM location 1 previously set as explained above, thus always allowing single copying without actuating the numeral keys. If two or more copies are needed, the numeral keys are depressed accordingly. Upon actuation of any key, an identification step is conducted to identify if said key is a numeral key or another key, and, if identified as a numeral key, the flow stores the input numeral into the RAM location 1 with corresponding display and awaits the next key actuation. 
     If it is identified as the clear key, the data in RAM locations 1 and 2 are cleared, and the flow stores again &#34;1&#34; in the RAM location 1 and awaits the next key actuation. The flow proceeds to the succeeding cassette change step upon depression of a copy start key. Then an identification is performed to identify if a stop signal is released, and, if yes, the program again awaits the next key actuation. If no, the program proceeds to the copy sequence. 
     The stop signal is released if the transfer sheet or the developer is lacking or when the fixing heater has not reached a predetermined temperature. 
     If numeral keys are actuated twice in succession, the data in the RAM location 1 is transferred to the location 2, and the second data is stored in the RAM location 1. For example in case of 72 copies, the data storage is conducted as shown in FIG. 29. 
     Upon succeeding actuation of any keys other than numeral keys the program performs the functions in same manners as explained before. 
     When the program has passed the key entry program and entered the copy sequence, the keys no longer provide input data even if depressed, thereby preventing erroneous functions. 
     (Process sequence) 
     FIGS. 16-18 show sequence control flow charts from power put-on to the end of copying in the copier according to the present invention, and FIGS. 19 and 20 are time charts indicating the function timings of process means. 
     The timing signals for performing the process after the power on and the copy instruction by the foregoing key entry cycle are formed based on the clock signals CP of 1 pulse per 1 mm of process speed (drum rotation speed 100 mm/sec). 
     After the main switch is turned on, the copy sequence is not initiated for a waiting time during which the fixing heater is energized and reaches a predetermined temperature. 
     After the lapse of said waiting time, the copy sequence is rendered possible if the transfer sheet and the toner are properly provided. 
     (Cassette change) 
     There are provided three cassettes, of which the upper and lower cassettes accommodate the standard sizes of higher frequency of use to enable copying of two sizes without manual cassette exchange. Also there is provided a manually inserted (auxiliary) cassette for enabling use of a transfer paper of a non-standard size. 
     These three cassettes can be selected by the button switches 122, 123 and 124. 
     As both the upper cassette and the auxiliary cassette utilize the same paper feed device, either cassette not in use is to be placed so as not to interfere with the paper feed from the other cassette. This state is detected by a microswitch 100 functioning in connection with the cassette displacing mechanism. Said mechanism is driven by a motor 108 which is controlled by said microswitch. 
     Namely upon selection of the auxiliary cassette, the presence thereof in the determined position is detected by the ON state of the switch 100 (ACS), but in case of OFF state thereof the cassette motor connected with a cam 101 is rotated to expel the upper cassette toward the outside and set the auxiliary cassette to the determined paper feed position until said switch becomes ON. On the other hand when the upper cassette is selected, the motor is rotated until the point b reaches the switch 100 to retract the auxiliary cassette and set the upper cassette instead. 
     In FIG. 2, 150 and 151 respectively indicate a lamp and a light-receiving element for detecting transfer paper in each cassette. 
     (Book mode) 
     Now the process sequence in the book mode copying will be explained with reference to the flow chart in FIG. 16 and the time chart in FIG. 21. 
     The copy sequence is initiated by depressing the copy button 130. At first a drum drive motor 112 is switched on to initiate the rotation of photosensitive drum, and simultaneously initiated is the counting of clock pulses CL as well as the preliminary charging and exposure to reduce the potential unevenness on the photosensitive drum, by means of the output signals from R4 and R9. Upon counting 300 pulses, the output signals from R0 and R7 turn on the primary charger 10, AC discharger 12, flush exposure lamp 13, liquid squeeze charger 16, transfer charger 17 and blank exposure lamp 102. Upon further counting of 120 clock pulses, the optical system displacing clutch 109 is turned on by the output signal from R5 to advance the optical system from the home position. Further a register clutch 110 is turned on by the output signal of R2 to cause the rotation of register roller 52. Upon further counting of 6 clock pulses a paper feed plunger 113 is energized by the output signal of R1 to lower the constantly driven paper feed roller 53 to advance the transfer paper from the cassette 73, 74 or 75. Also the original illuminating lamp 3 is lighted by the output signal of R6 and starts displacement with the optical system 4, 5 while illuminating the surface of an original. Also the blank exposure lamp 102 is turned off. 
     Upon counting of 60 pulses after the paper feed, the detector 103 performs the detection of paper 20, and, if not detected, the program proceeds to the routine F whereby the terminal R10 releases a single pulse to give a feed missing display. 
     In such case all the drive systems are turned off except the heater control and the feed drive motor 111 which are maintained in function. In case the upper 74 or the lower cassette 73 is utilized, the program proceeds to the routine G, and the copying sequence is restarted by depressing the start button after removing the transfer paper incorrectly fed. In case of the auxiliary cassette 75, the feed missing display indicates the absence of paper therein as this cassette is not provided with means for detecting the remaining amount of paper therein. In this case the cassette motor 108 is started to expel the auxiliary cassette to the outside to a determined position at which the microswitch 100 is turned off to terminate the function of the cassette motor 108. By again depressing the start button after inserting the transfer sheets into the cassette, the cassette motor is activated to guide the cassette into the machine, and upon reaching a determined position the microswitch 100 is actuated as shown in FIG. 26(D) to release a signal, which terminates the function of the cassette motor and starts the copy sequence. 
     If the transfer sheet arrives within afore-mentioned counting of 50 clock pulses, and upon further counting of 50 clock pulses from said arrival, the register clutch 110 is disconnected to stop the rotation of the register rollers 52 whereby the leading end of the transfer paper collides with said rollers to temporarily stop the advancement thereof. Thereafter a register signal RS released by a switch 116 upon passing of the optical system through a determined position connects the register clutch to start the rotation of said register rollers, thereby causing the advancement of transfer paper through said rollers toward the drum. Said register signal is released at a timing in such a manner that the leading end of the image formed on the drum coincides with the leading end of said transfer paper. 
     Upon receipt of the register signal, the paper feed plunger 103 is deactivated to terminate the paper feed function of the paper feed roller. 
     Upon passing of the transfer paper through the detector 113, the exposure lamp 3 and the optical system displacing clutch 109 are both turned off, whereby the optical system is made free and returned to the home position by means of the spring. During said reversing displacement of the optical system, there is lighted the blank exposure lamp 102. Also the preset copy number is reduced by one. If after a jam reset operation which is to be explained later, this subtraction does not take place in order to compensate the loss of jammed copy. 
     The program checks the remaining copy number, and, if 0, proceeds to the finishing mode (routine D). If it is not 0, the copying sequence further proceeds. Also the program proceeds to the finishing mode if there is released, at this point, a copy stop signal (by depression of the stop button or by the lack of transfer paper or toner). 
     In the absence of said stop signal, upon receipt of the register signal RS released at the reversing of the optical system, there is conducted a counting of 124 clock pulses, of which period is selected slightly longer than the time from the signal release of register signal generator to the return of optical system to the home position. Upon completion of counting of 124 pulses, the optical system is ready to start from the home position for starting the succeeding copying cycle. 
     As the developing device is functioned in synchronization with the main motor, the photosensitive drum is rotated upon counting 300 clock pulses after the end of copying whereby the surface thereof is cleaned with the developer and the blade 25. 
     (Sheet mode) 
     In the following there will be explained the sequence control in sheet mode while making reference to the time charts in FIGS. 22 and 23 and to the flow chart in FIG. 17. 
     The optical system to be used is same as that used in the book mode. Thus the optical system, if placed in a position for the book mode, is displaced to the position determined for the sheet mode by depressing the sheet start button 131. The optical system advanced by the displacing motor therefore the forward clutch is stopped upon actuating a microswitch 104 (OHP2), and simultaneously the exposure lamp 3 is deflected to a direction shown in FIG. 1 adapted for the sheet copying. 
     Successively, in a similar manner as in the book mode, there is conducted the selection of a cassette followed by the turning on of the drum motor, preliminary exposure lamp, preliminary charger, primary charger, AC discharger, transfer charger, whole surface (flush) exposure lamp and blank exposure lamp, and thereafter the sheet mode sequence (routine C) is started upon counting of 120 clock pulses. 
     Upon completion of counting of said 120 pulses, the sheet clutch is energized to start the rotation of feed roller 29, by which the stacked sheet originals are conveyed, sheet by sheet, from the tray 27. At the same time the register clutch is also connected. Upon counting of 100 clock pulses after the leading end of an original by the first original detector 106 (OS1 on), the paper feed plunger 113 is energized to supply the transfer paper from the cassette and to light the original exposure lamp 3, while extinguishing the blank exposure lamp 102. In this manner the image exposure is conducted while the original is transferred, thereby performing the latent image forming process. Also upon counting of 50 clock pulses after the start of paper feeding there is identified if the transfer paper has reached the detector 103, thus to judge the presence of error in paper feeding in a same manner as explained before. Upon identification of correct arrival of the transfer paper there is further identified if the leading end of an original reaches the second detector 107 within further 60 clock pulse counting. In case of absence of the arrival of the original (OS2 off), the program, judging that the original is jammed on the way, interrupts the copying sequence and releases three pulses from the terminal R10 to perform the original jam display. 
     The copy cycle of sheet mode can be restarted by depressing the sheet start button again after the jammed original is eliminated. 
     If the second detector 107 detects the original within said 60 clock pulses, there is further conducted a counting of 50 clock pulses from said detection, upon completion of which the register clutch is disconnected to stop the rotation of register rollers 52, whereby the advancement of the transfer paper is interrupted. Upon further counting of 50 clock pulses the register clutch is connected to start the advancement of the transfer paper thereby keeping the leading ends of said paper and of developed image on the drum in register. The paper feed plunger is deactivated as the transfer paper is pinched between the register rollers. 
     The counter for counting the original number is increased by one when an original has passed through the first detector 106. 
     This result is stored in the above-mentioned location of the RAM (FIG. 29) and is displayed in succession from 01 on the above-mentioned copy number display device 125. It is to be noted that the copy number setting and the corresponding display by the numeral keys are forbidden in the sheet mode operation. 
     Thereafter the program checks if the copying cycle is to be continued or to be temporarily interrupted (due to the absence of transfer paper or toner, or by the actuation of stop button). If the stop instruction is given, the program extinguishes the exposure lamp 3 and turns on the blank exposure lamp when the transfer paper has passed the detector 103 and proceeds to the finishing mode (FIG. 18). 
     Even in case the copying is to be continued, if a next original does not reach the first detector 106 within 50 clock pulses after the passing of the preceding original through the first detector, the program turns off the exposure lamp and turns on the blank exposure lamp upon completion of passing of the transfer paper and proceeds to the finishing mode. 
     If a next original arrives at the first detector 106 within the above-mentioned 50 clock pulses, there are further counted 50 clock pulses (i.e. 100 pulses in total) whereupon the program waits the passing of the transfer paper. If the transfer paper is still in transfer, the next original cannot be advanced as the next transfer paper cannot be fed. In such case, therefore, the sheet clutch is disconnected to temporarily stop the transfer of original (cf. time chart in FIG. 22). Upon completion of the passing of the transfer paper, the sheet clutch is immediately connected to restart the advancement of original, and simultaneously the paper feed plunger 113 is energized to feed the next transfer paper. Thereafter continued are the sequences of exposure, transfer and finishing in the above-mentioned manner. 
     On the other hand, in case of a short-sized transfer paper of which passing can be detected within 100 clock pulses after passing the first detector, the program follows the time chart shown in FIG. 23. In this case the sheet clutch is not disconnected but maintained in function to continue the original feeding and exposure, and the transfer paper is fed at the 100th pulse. 
     The sequence control thereafter is conducted in the above-mentioned manner. 
     As explained in the foregoing, the control of start of original exposure by detecting the trailing end of the transfer paper renders possible a high-speed continuous copying regardless of the size of the original and of the transfer paper. 
     The detection signals from the detectors 106, 107 and 103 are respectively called S1, S2 and S3. 
     Another example of sheet mode control according to the size as mentioned above can be realized by the circuit shown in FIG. 24, wherein COPY is a copy button, DISC is a high voltage source, M is a drum motor, Blank is a blank exposure lamp, S.CL is a sheet clutch, R.CL is a register clutch, LAMP1 is an exposure lamp, PL is a paper feed plunger, CUP is determined copy number completion signal, S1&#39; is the second or thereafter of the signal S1, COUT is a counter for counting the signal S1, CUT1-5 are counters for counting clock pulses CL and adapted for generating a pulse upon counting clock pulses of a determined number, wherein CUT5 releasing a step signal upon counting clock pulses of a determined number and being reset by the input of said signal to the terminal R; S1 and S3 are inverted signals of the signals S1 and S3, G1-G3 are AND gates and G9-G12 are OR gates; and the operation elements (motor etc.) are on-off controlled by the output signals (M etc.) released in the above-mentioned circuit. 
     The function of said circuit follows the aforementioned timing chart and will not be explained in detail. 
     Now there will be given an explanation on the function of the CPU in, as an example, the control for optical system displacement as a preparation for scanning directly prior to performing the sheet mode sequence, while making reference to a part of the above-mentioned detailed flow chart. 
     In the sheet mode operation the optical system, as explained before, has to be located in a position exclusively designed for this mode. If not located in such position, the optical system is displaced by the rotation of the displacing motor therefor and the actuation of the forward clutch, the position detection switch 104 is actuated upon arrival of the optical system at the stop position. Upon detection of actuation of said switch, the displacing motor and the forward clutch are immediately disconnected whereby the optical system stops at a position exclusive for the sheet mode. 
     The above-mentioned sequence will be further explained with reference to the program steps shown in FIG. 30(A) and (B). 
     The ROM releases a control signal (code) for each step by the clock pulses for driving the CPU. The output signals thus obtained are decoded by the instruction decoder ID to perform the program in succession. At first, upon output of a control code from a RAM location corresponding to the step 1, the decoder ID decodes this control code, and a numeral 9 is stored in the register YR through ALU by the control signal 2 1  to ALU and YR. In the step 2 a register R9, designated by said register YR among the registers RO, is set. In the step 3 the input data in the key input section KI is stored through ALU into the accumulator Acc. As the output of register R9 is released at the step 1, the input of the optical system home position detecting switch OHP2 is selected and it is identified if said switch OHP2 is open or closed (cf. matrix circuit in FIG. 26). Thus an input signal &#34;0&#34; or &#34;1&#34; of K4 in the key input section KI is stored in the accumulator Acc as a code of which second bit corresponds to the K4. Then in the step 4 a numeral &#34;0&#34; is set in the register YR through ALU. 
     In the step 5 the data stored in the accumulator Acc in the step 3 is transferred and stored in the location (O, O) of the memory RAM designated by the register YR. In the step 6 it is identified if the second bit of the data in said memory location (O, O) is &#34;1&#34; or not. If the data is &#34;1&#34; (yes) signifying that the optical system is identified to be in the position for sheet mode, the next step 7 is conducted. On the other hand if the data is &#34;0&#34; (no) signifying the failure of identification, the step 7 is skipped and the next step 8 for displacing the optical system is conducted. In the step 8 a numeral &#34;5&#34; is set in the register YR. In the step 9 the register R5 which is designated by said register YR among the registers RO, is set, and the output thereof is supplied to the driver to switch on the forward clutch. Thus, in combination with the above-mentioned output of the register R9, the optical system starts to displace toward the position for sheet mode (cf. FIG. 26). The step 10 is a jump instruction with a label LB1 to return to the step 1, and this loop function is repeated until the detecting switch OHP2 becomes actuated. When the OHP2 is actuated upon arrival of the optical system at the position for sheet mode, the second bit of the input data becomes &#34;1&#34; whereupon conducted is the step 7 which is a jump instruction to a label LB2. Thus successively performed is the step 11 designated by LB2. The step 11 stores a numeral &#34;9&#34; in the register YR, and the next step 12 resets the register R9 which is selected, among the registers RO, by said register YR. Similarly the register R5 is reset in the steps 14 and 15. In this manner the outputs of registers R9 and R5 are reset to switch off the displacing motor and the forward clutch, whereby the optical system is stopped at the position for sheet mode. 
     The register addresses of the RAM are schematically shown in FIG. 29. 
     The location (O, O) corresponds to the position of memory in the step 5 in FIG. 30 explained above. This location is utilized as a test bit for identifying the input signals. The addresses 5 and 6 are utilized as registers for storing &#34;1&#34; by the flag instructions and used as routine identifying means in other flow steps in FIG. 31. Also in FIG. 29 there are shown registers for storing the input copy number in the key entry cycle (addresses 3 and 4), for storing the finished copy number in the sequence flow cycle (addresses 1 and 2), for storing clock pulse number to be counted for jam identification (addresses 9-11) and for storing clock pulse numbers to be counted for load control timing (addresses 7 and 8). 
     In the present invention the preset copy number on the counter is subtracted by one at each copy completion but the copying of same number can be repeated by simply depressing the start button since the preset copy number is still memorized in the memory addresses 3 and 4. 
     The stop flag, entry flag etc. are stored in a same bit area because they have different timings, thus economizing the registers. 
     The flags employed in FIGS. 29 and 31 are as follows: 
     display flag: set for driving display unit D1 
     stop flag: set when temporary stop, no paper etc. 
     entry flag 1: set after key entry 
     entry flag 2: set after entry &#34;1&#34; 
     jam flag 1: set when paper is jammed 
     jam flag 2: set when pulse count for jam identification reaches a preset number 
     clear flag: set when clear key is actuated 
     sheet mode flag: set when sheet mode is selected 
     auxiliary cassette flag: set when auxiliary cassette is selected 
     pulse flag 1: set when the pulse count does not reach a preset number 
     pulse flag 2: set when the pulse number for jam identification is preset 
     The functions of CPU in the key entry, sequence control and finishing flow are detailedly shown also in the flow charts of FIG. 31. 
     (Jam detection) 
     If the transfer paper reaches the outlet within a determined period after the feeding thereof from the register rollers 52 is checked by identification of paper arrival at the outlet after counting a determined number of clock pulses CP released in response to the drum rotation. The paper arrival is detected by the microswitch 117 which thereupon releases the transfer paper discharge signal CPOS. The counting of clock pulses is started from the timing of release of transfer paper from the register rollers 52. The CPU, performing very fast functions, is capable of achieving various controls between two clock pulses. Thus the clock pulse counting for jam detection can be performed without affecting the controls on various elements by incorporating a clock counting program for jam detection into the main flow while awaiting various input signals or counting clock pulses for control timing. Stated otherwise different pulse countings can be conducted at the same time. 
     More specifically there is provided a flow (FIG. 19 I 1  -I 2 ) for setting &#34;300&#34; in the RAM locations 9-11 after the second turning on of the register clutch shown in FIG. 16, and also there is provided a jam detection flow I 2  -I 3  for identifying the 300 pulses within the timing identification loop for load function, for example the CP1 count step or register signal identification loop step. 
     If the paper does not reach the detector 117 upon jam detection check, all the drives (particularly those of higher danger such as high-voltage source, heater etc.) are cut off to interrupt the copying operation, and the transfer paper jam display lamp is lighted. The paper conveyor belt is maintained in function to allow paper ejection. The optical system may be an obstacle in removing the paper jammed in the machine. For this reason upon detection of paper jamming the output terminals R9 and R5 are set to drive the optical system displacing motor 114 thereby displacing the optical system to the position for sheet mode. Upon reaching the determined position the optical system actuates the microswitch 104 to release the signal OHP2 thereby turning off the signal R5 to cut off said displacing motor. In this case the optical system is mechanically locked and is therefore not reversed. The output signal from R9 is still maintained. 
     Opening and reclosing of the upper cover for jammed paper removal actuates a microswitch 105 (FIG. 3), to release a signal for resetting the jam detection, the input of said signal being performed by the output R9 shown in FIG. 26(A). 
     Upon repressing thereafter of the start button the output R9 is terminated to actuate a plunger 115 for releasing the optical system which thus is released from the locking and is reversed to the home position for book mode by means of a spring. 
     It is also possible to displace the charger 17 and roller 21 upon jam detection in order to facilitate jammed paper elimination. 
     The above-mentioned clock pulses are generated, by means of an internal generator, at a rate of 1 pulse/mm of process speed. 
     Said clock pulses can be generated, for example, by optically detecting the holes provided on a rotor plate rotating with the rotation speed of the drum. 
     Although the conventional discrete control circuit has to be provided with a key entry prohibition circuit to prohibit key entries during the copying operation, the control system of the present invention is free from erroneous operation even when, for example, the start button for sheet mode is depressed during the copying operation in book mode since the sequential control by microprogramming does not accept the key entries once the copy cycle is started after the proper key entries. Such technology utilizing stored program is also applicable to the copiers of various copying modes such as A4/A3 sizes, one-side and two-side copying, reduced size and same size copying. 
     As to the terms used in FIG. 31 and Tab. 1, reference should be made to the TMS 1000 Series, &#34;Programmer&#39;s Reference Manual&#34; published by Texas Instruments. 
     
                       TABLE 1______________________________________Program StepGENERAL ASSEMBLERASSEMBLE OF TMS1000 NEW INSTRUCTION FOR B.BSTMT      SOURCE     STATEMENT______________________________________ 1        OPT        LIST,XREF, PROM, STAT 2        TNI06      SEQUENCE PROGRAMME 3        PAGE       0 4 LB9    ALEC       1 5        BR         LB314 6        ALEC       2 7        BR         LB14 8        ALEC       4 9        BR         LB15 10       TCMIY      3 11       BR         LB16 12 LB314 BL         LB315 13 LB13  TCMIY      0 14       BR         LB16 15 LB14  TCMIY      1 16       BR         LB16 17 LB15  TCMIY      2 18       BR         LB16 19 LB10  TCY        0 20       ALEC       1 21       BR         LB17 22       ALEC       2 23       BR         LB18 24       ALEC       4 25       BR         LB19 26       TCMIY      7 27       BR         LB16 28 LB17  TCMIY      4 29       BR         LB16 30 LB18  TCMIY      5 31       BR         LB16 32 LB19  TCMIY      6 33       BR         LB16 34 LB11  TCY        0 35       ALEC       1 36       BR         LB20 37       TCMIY      9 38       BR         LB16 39 LB20  TCMIY      8 40       BR         LB16 41 LB12  ALEC       1 42       BR         LB21 43       ALEC       2 44       BR         LB22 45       TCY        0 46       TCMIY      0 47       TCMIY      0 48       TCY        5 49       SBIT       3 50       BR         LB16 51 LB22  TCY        6 52       SBIT       0 53 LB21  TCY        7 54       SETR 55       KNEZ 56       BR         LB23 57       RSTR 58       BL         LBSQ 59 LB23  RSTR 60       BL         LB24 61 LB16  TCY        5 62       LDP        1 63       BR         0 64       PAGE       1 65       TBITI      1 66       BR         LB25 67       TBITI      2 68       BR         LB26 69 LB27  TCY        1 70       TMA 71       IYC 72       TAM 73       TCY        4 74       TAM 75       TCY        0 76       TMA 77       IYC 78       TAM 79       TCY        3 80       TAM 81       TCY        5 82       SRIT       1 83 LB24  CALL       SUBA 84       CALL       SUBB 85       CALL       SUBA 86       CALL       SUBB 87       TCY        5 88       TBITI      3 89       BR         LB28 90 LB25  TBITI      3 91       BR         LB309 92       BL         LB4 93 LB309 BL         LB3 94 LB28  BL         LB3 95 LB26  RBIT       2 96       TCY        1 97       TCMIY      0 98       BR         LB27 99 LBSQ  CALL       SUBA100       TCY        6101       TBITI      0102       BR         LB36103       LDP        2104       BR         0105 LB36  BL         LBSMI106       PAGE       2107 LB37  CALL       SUBA108       TCY        3109       CALL       SUBC110       TBITI      3111       BR         LB30112 LB31  TCY        3113       CALL       SUBE114       TBITI      1115       BR         LB32116       TBITI      2117       BR         LB33118       TBITI      0119       BR         LB33120       TCY        3121       RSTR122       BR         LB37123 LB32  CALL       SUBA124       BR         LB31125 LB30  TCY        6126       SBIT       1127 LB34  TCY        3128       CALL       SUBE129       TBITI      1130       BR         LB33131       CALL       SUBA132       BR         LB34133 LB33  TCY        3134       RSTR135       TCY        4136       SETR137       TCY        7138       TCMIY      6F139       TCMIY      6F140 LB38  CALL       SUBD141       TCY        6142       TBITI      3143       BR         LB39144       TCY        7145       TCMIY      6D146       TCMIY      64147 LB40  CALL       SUBD148       TCY        6149       TBITI      3150       BR         LB41151       TCY        0152       SETR153       TCY        7154       SETR155       LDP        3156       BR         0157 LB39  CALL       SUBA158       BR         LB38159 LB41  CALL       SUBA160       BR         LB40161       PAGE       3162       TCMIY      6E163       TCMIY      6E164 LB42  CALL       SUBD165       TCY        6166       TBITI      3167       BR         LB43168       TBITI      0169       BR         LB44170 LB311 TCY     5171       SETR172       TCY        2173       SETR174       TCY        7175       SETR176       TCMIY      5177       TCMIY      0178 LB45  CALL       SUBD179       TBITI      2180       BR         LB326181 LB325 TCY        6182       BR         LB327183 LB326 TCY        0184       TBITI      2185       BR         LB325186       BL         LBJAMN 82187 LB327 TBITI      3188       BR         LB46189       SETR190       TCY        1191       SETR192       TCY        7193       RSTR194       TCMIY      6D195       TCMIY      6C196 LB47  CALL       SUBD197       TBITI      2198       BR         LB329199 LB328 TCY        6200       BR         LB330201 LB329 TCY        0202       TBITI      2203       BR         LB328204       BL         LBJAMN82205 LB330 TBITI      3206       BR         LB48207       TCY        0208       LDP        4209       BR         0210 LB43  CALL       SUBA211       BR         LB42212 LB46  CALL       SUBA213       BR         LB45214 LB48  CALL       SUBA215       BR         LB47216 LB44  BL         LBSM2217       PAGE       4218       TBITI      3B219       BR         LBBO220221 LB107 TCY        9222 LB50  RSTR223       DYN224       BR         LB50225       TCY        10225       SETR226       RSTR227       TCY        6228       TBITI      1229       BR         LB53230       BR         LB54231 LB53  TCY        3232       CALL       SUBE233       TBITI      1234       BR         LB55235       TCY        3236       RSTR237 LB54  BL         LB87238 LB55  CALL       SUBA239       BR         LB53240 LB49  TCY        7241       TCMIY242       TCMIY      6C243 LB57  CALL       SUBD244       TBITI      2245       BR         LB332246 LB331 TCY        6247       BR         LB333248 LB332 TCY        0249       TBITI      2250       BR         LB331251       BL         LBJAMN82252 LB333 TBITI      3253       BR         LB58254       TCY        2255       RSTR256 LB60  CALL       SUBF257       TBITI      1258       BR         LB61259       CALL       SUBA260       BR         LB60261 LB61  TCY        1262       RSTR263       TCY        2264       SETR265       TCY        6266       SBIT       2267       TCY        9268       TCMIY      6D269       TCMIY      64270       LDP        5271       BR         0272 LB58  CALL       SUBA273       BR         LB57274       PAGE       5275       TCMIY      68276 LB65  CALL       SUBD277       TCY        0278       TBITI      3279       BR         LB310280       BR         LB334281 LB310 TCY        5282       TBITI      2283       BR         LB335284 LB67  CALL       SUBA285       BR         LB65286 LB335 TCY        0287       TBITI      2288       BR         LB67289       BL         LBJAM290 LB334 TCY        5291       RSTR292       TCY        6293       RSTR294       TCY        7295       SETR296       TCY        5297       TBITI      3298       BR         LD300299       TCY        1300       DMAN301       BR         LB71302       A10AAC303       TAM304       TCY        2305       DMAN306 LB71  TAM307       BR         LB70308 LB300 RBIT       3309 LB70  TCY        1310       MNEZ311       BR         LB301312       TCY        2313       MNEZ314       BR         LB301315 LB69  TCY        7316       TCMIY      6E317       TCMIY      63318 LB73  CALL       SUBD319       TBITI      2320       BR         LB339321 LB340 TCY        6322       BR         LB341323 LB339 TCY        0324       TBITI      2325       BR         LB340326       BL         LBJAMN327 LB341 BL         LB343328 LB301 BL         LB336329       PAGE       6330 LB343 TBITI      3331       BR         LB74332       TCY        0333       RSTR334       TCY        2335       RSTR336       TCY        7337       RSTR338       TCY        8339       RETR340       TCY        7341       TCMIY      63342       TCMIY      64343 LB76  CALL       SUBD344       TBITI      2345       BR         LB345346 LB344 TCY        6347       BR         LB346348 LB345 TCY        0349       TBITI      2350       BR         LB334351       BR         LBJAMN352 LB346 TBITI      3353       BR         LB77354       BL         LB81355 LBJAMN     TCY        5356       SBIT       3357 LBJAM CALL       SUBA358       TCY        9359 LB78  RSTR360       DYN361       BR         LB78362       TCY        10363       SETR364       RSTR365       SETR366       RSTR367       SETR368       TCY        5369       SETR370 LB79  TCY        9371       CALL       SUBE372       TBITI      2373       BR         LB80374       CALL       SUBA375       BR         LB79376 LB74  CALL       SUBA377       BL         LB73378 LB77  CALL       SUBA379       BR         LB76380 LB80  TCY        5381       RSTR382       LDP        7383       BR         0384       PAGE       7385       TCY        9386       RSTR387 LB82  CALL       SUBF388       TBITI      2389       BR         LB83390       CALL       SUBA391       BR         LB82392 LB83  CALL       SUBB393 LB84  CALL       SUBF394       TBITI      2395       BR         LB85396       CALL       SUBB402 LB85  CALL       SUBA403       BR         LB84404 LB87  TCY        9405       CALL       SUBC406       TBITI      0407       BR         LB88408       TBITI      1409       BR         LB89410 LB90  CALL       SUBA411       BR         LB87412 LB89  TCY        6413       TBITI      0414       BR         LB93415       BR         LB90416 LB88  TCY        6417       TBITI      0418       BR         LB92419 LB93  TCY        7420       CALL       SUBC421       TBITI      3422       BR         LB94423       TCY        10424       RSTR425       TCY        5426       RBIT       1427       TCY        6428       RBIT       2429       BL         LB37430 LB92  CALL       SUBA431       BR         LB87432 LB94  CALL       SUBA433       BR         LB93434       PAGE       8435 LB81  TCY        7436       TCMIY      6F437       TCMIY      6F438 LB95  CALL       SUBD439       TCY        6440       TBITI      3441       BR         LB96442       TCY        4443       RSTR444       TCY        5445       TBITI      1446       BR         LB56447       TCY        4448       TMA449       TCY        2450       TAM451       TCY        3452       TMA453       TCY        1454       TAM455 LB56  CALL       SUBA456       TCY        5457       TCFIIY     0458       TCMIY      0459       BL         LB4460 LB96  CALL       SUBA461       BR         LB95462 LBSM1 TCY        1463       TCMIY      0464       TCMIY      0465 LB97  TCY        9466       CALL       SUBE467       TBITI      2468       BR         LB98469       TCY        5470       SETR471       CALL       SUBA472       BR         LB97473 LB98  TCY        9474       RSTR475       TCY        5476       RSTR477       TCY        5478       RSTR479       BL         LB37480 LBSM2 TCY        2481       SETR482       BL         LB99483       PAGE       9484 LB99  TCY        8485       CALL       SUBE486       TBITI      1487       BR         LB100488       CALL       SUBA489       BR         LB99490 LB100 TCY        7491       TCMIY      3492       TCMIY      6493 LB101 CALL       SUBD494       TCY        6495       TBITI      3496       BR         LB102497       TCY        1498       SETR499       TCY        6500       SETR501       TCY        7502       RSTR503 LB103 TCY        7504       TCMIY      1505       TCMIY      3506 LB104 CALL       SUBD507       TCY        6508       TBITI      3509       BR         LB105510       TCY        0511       TBITI      3512       BR         LB106513       BL         LB107514 LB102 CALL       SUBA515       BR         LB101516 LB105 CALL       SUBA517       BR         LB104518 LB106 TCY        7519       TCMIY      11520       TCMIY      3521 LB108 CALL       SUBD522       TCY        6523       TBITI      3524       BR         LB312525       BL         LB0JAM526 LB312 TCY        0527       TBITI      1528       BR         LB109529       CALL       SUBA530       BR         LB108531 LB109 TCY        7532       TCMIY      3533       TCMIY      3534       LDP        10535       BR         0536       PAGE       10537 LB1144     CALL       SUBD538       TCY        6539       TBITI      3540       BR         LB115541       TCY        2542       RSTR543       TCY        7544       TCMIY      3545       TCMIY      3546 LB116 CALL       SUBD547       TCY        6548       TBITI      3549       BR5        LB117550       TCY        1551       RSTR552       TCY        2553       SETR554 LB118 CALL       SUBF555       TBIT15     1556       BR5        LB119557       TCY        1558       IMAC559       TAM560       A6AAC561       BR         LB120562 LB122 TCY        6563       RSTR564       TCY        7565       CALL       SUBC566       LDP        11567       BR         0568 LB115 CALL       SUBA569       BR         LB114570 LB117 CALL       SUBA571       BR         LB116572 LB119 CALL       SUBA573       BR         LB118574 LB120 TAM575       TCY        2576       IMAC577       TAM578       A6AAC579       BR         LB121580       BR         LB120581 LB121 TAM582       BR         LB122583       PAGE       11584       TBITI      3585       BR         LB123586       TCY        6587       SETR588       TCY        7589       TCMIY      3590       TCMIY      3591 LB124 CALL       SUBD592       TCY        6593       TBITI      3594       BR         LB125595 LB129 CALL       SUBF596       TBITI      3597       BR         LB313598       BR         LB130599 LB313 CALL       SUBA600       BR         LB129601 LB130 TCY        6602       RSTR603       TCY        7604       SETR605       BL         LB69606 LB123 TCY        6607       SETR608       TCY        5609       SBIT       1610       BR         LB129611 LB125 TCY        0612       TBITI      1613       BR5        LB131614       CALL       SUBA615       BR         LB124616 LB131 TCY        7617       TCMIY      3618       TCMIY      3619 LB132 CALL       SUBD620       TCY        6621       TBITI      3622       BR         LB133623 LB135 CALL       SUBF624       TBITI      3625       BR         LB136626       TCY        8627       SETR628       TCY        1629       SETR630       LDP        12631       BR         0632 LB133 CALL       SUBA633       BR         LB132634 LB136 TCY        8635       RSTR636       CALL       SUBA637       BR         LB135638       PAGE       12639       TCY        6640       SBIT       2641       BL         LB103642 LB336 CALL       SUBF643       TBITI      3644       BR         LB302645 LB303 CALL       SUBD646       TBITI      2647       BR         LB337648       TCY        0649       BR         LB338650 LB302 TCY        5651       SBIT       1652       BL         LB69653 LB337 TCY        0654       TBITI      2655       BR         LB338656 LB350 BL         LBJAMN657 LB338 TBITI      1658       BR         LB304659       CALL       SUBA660       BR         LB303661 LB304 TCY        7662       TCMIY      3663       TCMIY      6E664 LB318 CALL       SUBD665       TBITI      2666       BR         LB347667 LB348 TCY        6668       TBITI      3669       BR         LB349670       BR         LB351671 LB349 CALL       SUBA672       BR         LB318673 LB347 TCY        0674       TBITI      2675       BR         LB348676       BR         LB350690       PAGE       13691 SUBB  TCY        15692       TCMIY      8693 LB202 DYN694       BR         LB202695       DMAN696       TAM697       MNEZ698       BR         LB202699       RETN700 SUBD  SETR701       TKA702       RSTR703       TCY        0704       TAM705       RETN706 SUBD  TKA707       TCY        0708       TAM709       TBITI      0710       BR         SUBD711 LB203 TKA712       TCY        0713       TAM714       TBITI      0715       BR         LB204716       BR         LB203717 LB204 TCY        7718       DMAN719       BR         LB205720       TAM721       TCY        8722       DMAN723       BR         LB205724       TCY        6725       RBIT       3726       BR5        LB206727 LB205 TAM728       TCY        6729       SBIT       3730 LB206 TBITI      2731       BR         LB322732       TCY        5733       RBIT       2734       BR         LB323735 LB322 TCY        9736       DMAN737       BR         LB324738       TAM739       TCY        10740       DMAN741       BR         LB324742       TAM743       TCY        11744       DMAN745       BR         LB324746       TCY        6747       RBIT       2748       TCY        5749       SBIT       2750       BR         LB323751 LB324 TAM752       TCY        5753 LB323 RETN754       PAGE       14755 SUBA  TCY        5756       TBITI      0757       BR         LB200758       SBIT       0759       TCY        12760       RSTR761       TCY        1762       TAM763       TDO764       TCY        11765       SETR766       BR         LB201767 LB200 RBIT       0768       TCY        11769       RSTR770       TCY        2771       TMA772       TDO773       TCY        12774       SETR775 LB201 RETN776 SUBE  SETR777       TKA778       TCY        0779       TAM780       RETN781 SUBF  TKA782       TCY        0783       TAM784       RETN785 LB0JAM     TCY        10786 LB110 RSTR787       DYN788       BR         LB110789       TCY        10790       SETR791       RSTR792       SETR793       RSTR794       SETR795       RSTR796 LB111 TCY        9797       CALL       SUBC798       TBITI      1799       BR         LB112800       CALL       SUBA801       BR         LB111802 LB112 TCY        2803       SETR804       BL         LB37805 LB315 TCY        5806       TBITI      2807       BR         LB316808       TCY        0809       BL         LB13810 LB316 BL         LB4811       PAGF       15812       LDP        15813       TCY        12814 LB1   RSTR815       DYN816       BR         LB1817       CLO818       LDX        0819       CLA820 LB2   TAM821       DYN822       BR         LB2823 LB3   TCY        1824       TCMIY      1825       TCY        3826       TCMIY      1827       TCY        5828       SBIT       2829 LB4   CALL       SUBA830       TCY        0831       SETR832       TKA833       RSTR834       ALEC       0835       BR         LB305836       BL         LB9837 LB305 IYC838       SETR839       TKA840       RSTR841       ALEC       0842       BR         LB306843       BL         LB10844 LB306 IYC845       SETR846       TKA847       RSTR848       ALEC       0849       BR         LB307850       BL         LB11851 LB307 TCY        9852       SETR853       TKA854       RSTR855       ALEC       0856       BR         LB308857       BL         LB12858 LB308 TCY        5859       RBIT       1860       RBIT       3861       CALL       SUBB862       CALL       SUBA863       CALL       SUBB864       BR         LB4865       END______________________________________