Print and order totalizer for automatic photographic paper cutter

REFERENCE TO CO-PENDING APPLICATIONS
Reference is made to the following co-pending patent applications which are filed on even date with this application and are assigned to the same assignee as this application: "Microprocessor Controlled Photographic Paper Cutter" Ser. No. 838,064 by G. Strunc and F. Laciak; "Paper Drive Mechanism for Automatic Photographic Paper Cutter" Ser. No. 837,987 by R. Diesch; "Multichannel Indicia Sensor for Automatic Photographic Paper Cutter" Ser. No. 837,986 by R. Diesch and G. Strunc; "Stepper Motor Control" Ser. No. 837,988 by G. Strunc; "Paper Feed Control for Automatic Photographic Paper Cutter" Ser. No. 838,000 by R. Diesch G. Strunc; and "Photographic Paper Cutter with Automatic Paper Feed in the Event of Occasional Missing Cut Marks" Ser. No. 837,999 by G. Strunc; and "Knife Assembly for Photographic Strip Cutter" Ser. No. 837,998 by R. Diesch. Subject matter disclosed but not claimed in the present application is disclosed and claimed in these co-pending applications.
BACKGROUND OF THE INVENTION
The present invention relates to photographic processing equipment. In particular, the present invention relates to a totalizer system which stores and displays information related to the operation of an automatic photographic paper cutter, such as the number of prints cut in the previous order, and the total number of prints and orders cut during a day or during a shift.
In commercial photographic processing operations, very high rates of processing must be achieved and maintained in order to operate profitably. To expedite the photographic processing, orders containing film of similar type and size are spliced together for developing. As many as 500 to 1000 rolls of 12, 20, and 36 exposure film may be spliced together for processing and printing purposes.
After developing, the photographic images contained in the film negatives are printed in an edge-to-edge relationship on a continuous strip of photosensitive paper by a photographic printer. The photographic printer causes high intensity light to be passed through a negative and imaged on the photographic print paper. The photographic emulsion layer on the print paper is exposed and is subsequently processed to produce a print of the image contained in the negative.
After the strip of print paper has been photoprocessed to produce prints, a photographic paper cutter cuts individual prints from the strip. The prints are then sorted by customer order and ultimately packaged and sent to the customer.
Automatic print paper cutters have been developed which automatically cut the print paper into individual prints. These automatic paper cutters are controlled by indicia which are placed along the print paper by the photographic printer. Typically the indicia are of two types: cut marks and end-of-order marks. The cut marks indicate the desired location of a cut between adjacent prints. The end-of-order marks, which typically appear along the opposite edge of the print paper from the cut marks, indicate the end of a customer's order. The automatic paper cutter includes a sensor which senses the cut mark and causes the individual prints to be cut from the strip at the desired locations. The separated prints are passed to an order packaging or grouping device, which groups the prints in response to the end-of-order marks which are sensed by the automatic cutter.
The desire for high rates of processing within commercial photographic processing operations has led to the development of extremely high speed automatic paper cutters. Automatic paper cutters capable of cutting over 25,000 prints per hour (i.e. over 7 prints per second) have been desired and are being developed.
Despite the automatic operation of the automatic paper cutters, the amount of information supplied by the automatic paper cutter to the operator has been rather limited. Some automatic paper cutters have included a mechanical counter which counts the prints from each order as they are cut. At the end of an order, the counter is reset and begins to count again as the prints from the next order are cut.
In some cases, such as when the automatic paper cutter is not used in conjunction with an automatic print packaging system, the operator must record the number of prints cut in each order for billing purposes. This has, in the past, been primarily a manual operation, with the operator manually recording the information on the mechanical counter at the end of an order.
SUMMARY OF THE INVENTION
The present invention is a totalizer system for use with an automatic photographic paper cutter. The totalizer system stores and displays useful management information such as the number of prints cut in the preceding order, the total number of prints cut during that shift or during the day, and the total number of orders which have been processed.
The present invention utilizes, in its preferred embodiments, the information processing and storage capability of a microprocessor based electronic system. This preferably is the same microprocessor based system which is used to control the complete operation of the automatic photographic paper cutter.
The system of the present invention counts the number of prints cut in each order and the number of orders which are processed. In one operating mode, the system displays the number of prints cut in the previous order while the following order is being cut. This permits sufficient time for the operator to record this information if desired.
In another mode, the system displays the total number of prints and orders since commencement of operation. It is possible, therefore, to determine the number of prints which have been cut during a particular shift or since commencement of operation that day. This allows management to monitor and evaluate the performance of both the operator and the automatic photographic paper cutter.

BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of an automatic paper cutter utilizing the print and order totalizer of the present invention.
FIG. 2 shows the main and auxiliary control panels of the automatic paper cutter of FIG. 1.
FIG. 3 is an electrical block diagram of the automatic paper cutter of FIG. 1.
FIG. 4 is an electrical block diagram of the paper cutter control shown in FIG. 3.
FIG. 5 is an electrical schematic diagram of a portion of the paper cutter control of FIG. 4 including a microprocessor, a clock, bus drivers, and a bidirectional buffer.
FIG. 6 is an electrical schematic diagram of a portion of the paper cutter control of FIG. 4 including random access memories and associated memory select circuitry.
FIG. 7 is an electrical schematic diagram of a portion of the paper cutter control including read-only memories and associated memory select circuitry.
FIG. 8 is an electrical schematic diagram of the programmable input/output (I/O) device shown in FIG. 4.
FIG. 9 is an electrical schematic diagram of the display.
FIGS. 10-13C are flow charts illustrating the operation of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Introduction
The print and order totalizer system of the present invention stores and displays information regarding the operation of an automatic photographic paper cutter. In the preferred embodiments, the print and order totalizer system takes advantage of the storing and data processing capabilities of a microprocessor based electrical control system. This microprocessor based electrical control system may be a separate accessory to an automatic photographic paper cutter, or may be the control system which controls the entire operation of the automatic photographic paper cutter.
The print and order totalizer system of the present invention has been used to considerable advantage in an automatic photographic paper cutter which cuts photographic prints from a strip of photographic paper at rates as high as 25,000 prints per hour. This automatic photographic paper cutter is microprocessor controlled, and the print and order totalizer of the present invention makes use of the same microprocessor which is used to control the other functions of the automatic photographic paper cutter.
The following section, which is entitled "Paper Cutter System Overview," generally describes the operation of the high speed, microprocessor controlled, photographic paper cutter including the print and order totalizer system of the present invention. A more detailed description of the entire electrical control system of the automatic paper cutter may be found in the previously mentioned co-pending application entitled "Microprocessor Controlled Photographic Paper Cutter," and a more detailed description of the paper supply and drive mechanism may be found in the previously mentioned application entitled "Paper Drive Mechanism for Automatic Photographic Paper Cutter." The other co-pending patent applications referred to in the "Reference to Co-Pending Applications" also describe various aspects of the automatic photographic paper cutter shown in the Figures. For that reason, a detailed description of all of the various components of the automatic paper cutter will not be included in the present application. Instead, a discussion of the automatic paper cutter will concentrate on the print and order totalizer of the present invention, and will describe the operation of the automatic paper cutter in general terms, except where that operation is directly concerned with the present invention.
Paper Cutter System Overview
FIG. 1 is a perspective view of a high speed, microprocessor controlled, automatic paper cutter which includes the print and order totalizer system of the present invention. The paper cutter includes five major portions: a paper supply, a paper drive mechanism, a knife assembly, main and auxiliary control panels, and control electronics.
The paper supply is an integral part of the paper cutter. A paper roll 10 is loaded from the front on to hub 12, and a lever 14 is tightened to hold paper roll 10 in place. By tightening lever 14, an elastomer material is expanded to give a press fit on the inside diameter of the core of paper roll 10. The rotation of hub 12 is controlled by electro-mechanical brake 16.
Paper strip 18 from roll 10 is trained over bale arm assembly 20 and guide roller 22, between drive and idler pinch rollers (not shown) into wire form retainer 28, and then to paper guides 30 and 32 of the paper drive mechanism. The drive pinch roller is driven by the same AC motor 34 which drives the knife assembly of the paper cutter. The motor 34 drive is transmitted to the drive pinch roller through a belt drive and electro-mechanical clutch 36 (shown schematically in FIG. 4). When the proper loop is generated, clutch 36 is de-energized and brake 16 is energized to prevent paper from unspooling off roll 10.
The paper drive mechanism includes paper guides 30 and 32, which receive paper strip 18 from the paper supply assembly. Rear guide 30 is fixed and front guide 32 is movable so that various paper widths can be accommodated. Front paper guide 32 is adjusted by loosening thumbscrews 38a and 38b and moving front guide 32 to the desired position.
Paper strip 18 is driven by stepper motor 40 through idler and drive pinch rollers 42 and 44. Idler roller 42 has a lever 46 to locate idler roller 42 in the engaged position for operation and in the disengaged position for loading paper, shipping, and other non-operating modes. Rollers 42 and 44 are located at the rear edge of strip 18 so that the entire print is visible to the operator. Additional guidance of paper strip 18 is provided by another set of idler rollers 48 and 50, which are located near the end of the paper cutter.
Front and rear indicia sensor assemblies 52 and 54 are mounted below top plate 56 and sense all types of marks which appear on the back side of paper strip 18. Cut marks sensed by front or rear sensor assemblies 52 or 54 are used to indicate the location of a desired paper cut.
Knife assembly 58 includes a base, spring-wrap clutch mechanism 60 (shown schematically in FIG. 4), AC motor 34 (which also drives the drive pinch roller of the paper supply), a main drive shaft, two crank arm assemblies, two vertical drive shafts, and interchangeable blades. One blade is used for cutting straight-bordered and straight-borderless prints, and the other blade is used for cutting round-cornered borderless prints.
FIG. 2 shows the main and auxiliary control panels 72 and 74. Main control panel 72, which is located at the front of the paper cutter, has a display 76 and seven switches. These seven switches are Power switch 78, Speed Select switch 80, Mode Select switch 82, Feed Length switch 84, Cut/No Cut switch 86, Start/Stop switch 88, and Trim switch 90.
The remaining seven switches of the automatic paper cutter are located on auxiliary panel 74, which is located below main control panel 72 and is accessible through a hinged cover. The seven switches are Length of Cutout switch 92, Maximum Number of Prints switch 94, Feed-After-Cut Mark switch 96, Cut Mark/No Cut Mark switch 98, Front/Rear Cut Sensor switch 100, Front Sensor Select switch 102, and Rear Sensor Select switch 104.
The automatic paper cutter operation is commenced by turning on Power switch 78. Front paper guide 32 is then set to the appropriate paper width, paper roll 10 is installed on hub 12, and paper strip 18 is threaded through the paper supply and into the paper cutter.
The operator then selects the proper sensor assembly (either front sensor 52 or rear sensor 54) to sense cut marks by switching Front/Rear Cut Sensor switch 100 to the "Front" or the "Rear" position. The sensor assembly which is not selected is automatically used to sense end-of-order marks, which appear along the opposite edge of paper strip 18 from the cut marks.
The next step involves selecting a proper segment of the sensor assembly so that the largest sensor signal is provided. Mode switch 82 is placed in the SENSOR SELECT mode, and a portion of print paper strip 18 bearing a cut mark or end-of-order mark is oscillated back and forth past the sensor assembly. The operator sets the Front and Rear Sensor Select switches 102 and 104 to the settings which select the proper segments of sensor assemblies 52 and 54 so that the largest sensor signals are provided.
Mode switch 82 is then set to the FEED LENGTH CALIBRATE mode, Start switch 88 is actuated and one print is fed from cut mark to cut mark. The feed length is displayed on display 76 and that value is set into Feed Length switch 84 by the operator.
The operator then sets Mode switch 82 to the FEED-AFTER-SENSE mode. The edge of a print is aligned with a calibration mark on one of the paper guides 30 and 32. Start switch 88 is actuated and the paper advances to the next cut mark and stops. The feed-after-sense length is displayed on display 76, and the operator sets that value into Feed-After-Sense switch 96.
The operator then sets Mode switch 82 to the RUN mode and sets Speed switch 80 to the desired cycle rate. If bordered or round-cornered borderless prints are being cut, the paper cutter is then ready to operate. If straight borderless prints are being cut, the length of cutout must be set in Length of Cutout switch 92.
Automatic operation of the paper cutter can then be commenced by actuating Start switch 88. As each order is cut, the number of prints cut in that order is counted. If the automatic paper cutter is not used in conjunction with an automatic print packing device, at the end of the order the number of prints cut is displayed on display 76 and is maintained on display 76 while prints from the next order are being cut. This allows the operator sufficient time to record the displayed information if desired, even though the cutter continues to operate at high speed without interruption.
If, on the other hand, the automatic paper cutter is used in conjunction with an automatic print packing device, the number of prints in an order is incremented and displayed on display 76 as each print is cut. The operator does not have to record the number of prints in the order because the packer automatically performs this function.
At the end of a shift or the end of a day, summary modes are available by selecting the TOTAL mode of Mode switch 82. The total prints cut and the total orders cut during that shift or that day since power was turned on are displayed on display 76.
Print and Order Totalizer - Electrical System
FIG. 3 is an electrical block diagram of the automatic photographic paper cutter which includes the print and order totalizer system of the present invention. As shown in FIG. 3, power supply 150 supplies power to the various circuits and motors contained in the paper cutter. Power supply 150 is controlled by Power switch 78.
Paper cutter control 154 controls the operation of the paper cutter. Paper cutter control 154 receives inputs from the various switches of main control panel 72 and auxiliary panel 74 through control panel logic circuit 156. In addition, signals from reject/remake sensor 158, front indicia sensor 52 and rear indicia sensor 54 are processed by sensor amplifier circuit 160 and supplied through auxiliary panel 74 and control panel 156 to paper cutter control 154. Paper cutter control 154 may also receive inputs from optional foot switch 162 and optional automatic print packing device 164. Foot switch 162 is connected in parallel with the start contacts of start/stop switch 88 of main control panel 72 and allows the operator to initiate a feed-and-cut cycle without the use of hands. Packer 164 may be an automatic photographic print sorter and packer such as the PA-KOMP II photopacker manufactured by Pako Corporation. If the paper cutter is to be used in conjunction with packer 164, interconnection is necessary in order to coordinate the operation of the two devices.
The outputs of paper cutter control 154 control the operation of stepper motor 40. Control of AC motor 34 is achieved by means of knife clutch 60, paper clutch/brake driver assembly 166, paper brake 16, and paper clutch 34. Paper cutter control 154 also supplies signals to control panel logic 156 which control display 76 on the main control panel 72, and supplies output signals to packer 164 if the paper cutter is being used in conjunction with packer 164.
FIG. 4 shows an electrical block diagram of paper cutter control 154. The paper cutter control includes microprocessor 170, clock 172, bus driver 174, bidirectional buffer 176, memory select circuit 178, random access memory (RAM) 180, read only memory (ROM) 182, programmable input/output (I/O) device 184, stepper motor clock 186, stepper motor phase generator 188, stepper motor driver 190, and packer interface circuit 192.
In one preferred embodiment, microprocessor 170 is an 8-bit microprocessor such as the Intel 8080A. Clock circuit 172 supplies clock signals, together with some other related signals, to microprocessor 170. Bus driver 174 receives outputs from microprocessor 170 and drives various lines of address bus 194. Memory select circuit 178 receives the signals from address bus 194 and addresses selected locations of RAM 180 or ROM 182. In addition, memory select circuit 178 may address the control panel logic 156 shown in FIG. 3 to interrogate the various switches of main and auxiliary control panels 72 and 74. In the system shown in FIG. 4, the switches of main and auxiliary panels 72 and 74 are addressed in the same manner as a memory location. Data to and from RAM 180 and data from ROM 182 and control panel logic 156 is supplied over data bus 196. Bidirectional buffer 176 interconnects microprocessr 170 with data bus 196.
Programmable I/O device 184 is also connected to data bus 196 and receives data from microprocessor 170. This data is used to control operation of stepper motor 40 through stepper motor clock 186, stepper motor phase generator 188, and stepper motor driver 190. In addition to the output signals from programmable I/O device 184, stepper motor clock 186 receives the CUT and END signals from control panel logic 156. These signals indicate that cut and end-of-order marks, respectively, have been sensed. Stepper motor clock 186 includes status circuits which are periodically interrogated by microprocessor 170 to determine whether cut or end-of-order marks have been sensed.
Programmable I/O device 184 also controls the operation of display 76. Depending upon the particular mode selected by mode switch 82 on main control panel 72, display 76 may display the feed length, the feed-after-sense length, the number of prints in the previous order, or the total number of prints and orders since the cutter was turned on.
As shown in FIG. 4, packer interface circuit 192 is also connected to address bus 194. Packer interface circuit 192 supplies the necessary signals to packer 164 of FIG. 3 to coordinate the operation of packer 164 with the operation of the automatic paper cutter.
FIG. 5 shows a portion of cutter control 154 including microprocessor 170, clock 172, bus drivers 174a and 174b, and bidirectional buffer 176. Also included in the circuit of FIG. 5 are resistors R1-R8; capacitors C1 and C2; diode CR1; and inverters 198, 200, 202, and 204.
Clock 172, which is in one preferred embodiment an Intel 8224 integrated circuit, provides the 01 and 02 clock signals to microprocessor 170. The frequency of the 01 and 02 clock signals is determined by oscillator crystal Y1 and capacitor C1. In one preferred embodiment, crystal Y1 is selected to provide an 18.432 MHz oscillation.
In addition to the 01 and 02 clock signals, clock generator 172 also provides the RDY, RES, and SYNC signals to microprocessor 170, the STSTB signal to bidirectional buffer 176, and the 02 (TTL) and OSC signals to other circuits within cutter control 154.
In addition to the signals supplied by clock 172, microprocessor 170 receives the HOLD signal from inverter 198 and the interrupt (INT) signal from inverter 200. The outputs of microprocessor 170 include address lines A0-A15, which are supplied to bus drivers 174a and 174b. The outputs of bus drivers 174a and 174b are address bus lines AB0-AB15, which form a 16-line address bus 194. Bus drivers 174a and 174b are enabled by the BUSEN signal from inverter 202.
Microprocessor 170 includes input/output ports D0-D7 for receiving and supplying data. D0-D7 are connected to bidirectional buffer 176, which also receives the WR, DBIN, and HLDA signals from microprocessor 170, the STSTB signal from clock 172, and the BUSEN signal from inverter 202.
Data lines DB0-DB7 of data bus 196 are connected to bidirectional buffer 176, which permits bidirectional flow of data on data bus 196 to and from microprocessor 170. In addition, bidirectional buffer 176 generates the INTA, IPWR, MEMR, MEMW, I/OR, and I/OW signals which determine the direction of flow of data on data bus 196 and control the operation of the various circuits connected to data bus 196.
The remaining signals generated by the circuit shown in FIG. 5 are generated by microprocessor 170. These signals are the HLDA, INTE, and WAIT signals.
FIG. 6 shows random access memories 180a and 180b, together with NAND gate 206 and memory select circuit 178a. In a preferred embodiment, random access memories 180a and 180b are Intel 8111-1 integrated circuits and memory select 178a is an Intel 8205 integrated circuit.
Depending upon the states of address bus lines AB8-AB15, memory select 178a provides an enable signal to either RAM 180a or 180b, or will generate an enable signal on lines SMO8, SMO9, SMOA or SMOB.
If either RAM 180a or RAM 180b is selected, data will either be written into or read from memory locations of the RAM. The state of the MEMW signal, which is supplied to the W inputs of RAMs 180a and 180b determines whether data is written or read.
As shown in FIG. 6, the random access memory includes only two RAM inegrated circuits 180a and 180b. If further storage is required, as many as six additional RAM integrated circuits may be connected and addressed by memory select 178a. In the embodiment of the automatic paper cutter described in the present application, however, two RAM integrated circuits is sufficient to provide the necessary storage.
FIG. 7 shows ROMs 182a and 182b, memory select circuit 178b, and NAND gate 208. Memory select circuit 178b enables either ROM 182a or 182b depending upon the state of address bus lines AB10-AB15 and the MEMR signal. In addition, memory select circuit 178b produces the SMO4 -- SMO7 signals.
In a preferred embodiment, ROMs 182a and 182b are erasable programmable read only memories (EPROM) such as the Intel 8708. When either ROM 182a or 182b is enabled, address bus lines AB0-AB9 select the particular memory location, and data read from that location is supplied on data bus lines DB0-DB7.
As in the case of the random access memory shown in FIG. 6, the read only memory of FIG. 7 may include additional memory circuits if additional storage is required. With the configuration shown in FIG. 7, two additional Intel 8708 EPROMs may be added without requiring additional memory select circuitry.
FIG. 8 shows programmable I/O device 184 together with NAND gates 210 and 212 and inverter 214. In a preferred embodiment, programmable I/O device 184 is an Intel 8255 integrated circuit and NAND gates 210 and 212 and inverter 214 are TTL logic gates. Except where otherwise specifically indicated, all logic gates shown in the Figures are CMOS integrated circuit devices.
Programmable I/O device 184 receives data bus lines DB0-DB7, address bus lines AB0 and AB1, and the I/OW, I/OR and RES lines. In addition, address bus lines AB2 and AB3 are NANDed by NAND gate 210, whose output is NANDed with address bus line AB13 by NAND gate 212. The output of NAND gate 212 is inverted by inverter 214 and supplied to the CS input of programmable I/O device 184.
Programmable I/O device 184 has two 8-line outputs. The first set of 8 outputs, which are designated PA0-PA7, are supplied to the inputs of stepper motor clock generator 186. The 8-bit number supplied on lines PA0-PA7 is used to control the frequency of the output of the stepper motor clock generator 186 and, therefore, the speed of stepper motor 40.
The PB0-PB7 outputs from programmable I/O device 184 are supplied to the main control panel 72. Lines PB0-PB7 are decoded and are used to drive display 76.
FIG. 9 shows the circuitry associated with four digit display 76. The circuitry includes four seven-segment decoder driver latches 364-367 and four seven-segment LED displays 368-371. Display 368 represents the most significant digit and display 371 represents the least significant digit. Decoder driver latches 364-367 receive the PB0-PB7 signals from programmable I/O device 184 and drive displays 368-371 in accordance with those signals.
Print and Order Totalizer -- Operation
The print and order totalizer system of the present invention includes stepper motor control 154 and display 76. In the system shown in the preceding Figures, display 76 displays a variety of information depending upon the particular mode selected by mode switch 82. When either the RUN mode or the TOTAL mode is selected, display 76 functions as a part of the print and order totalizer system of the present invention.
When the RUN mode is selected, the print and order totalizer system of the present invention causes the display 76 to display the number of prints cut in a particular order. If the automatic paper cutter is being used in conjunction with an automatic print packing device (i.e. packer 164 is connected), the print count displayed is incremented as each print is cut. If, on the other hand, the automatic paper cutter is not being used in conjunction with an automatic print packing device, display 76 displays the number of prints cut in an order, and holds that number while the next order is being cut. This provides the operator with sufficient time to record the number of prints in the previous order.
If the cutter is stopped in the middle of an order, the number of prints in the order cut up to that time is displayed. Paper cutter control 154 then returns to scanning the states of the switches on main and auxiliary control panels 72 and 74 to determine whether any of the switch settings have been changed and whether the operator has initiated another paper feed-and-cut cycle.
When the TOTAL mode is selected, display 76 displays the number of prints cut and orders completed since power was turned on. Because display 76 contains only four digits, and the number of prints or orders cut may exceed 10,000, the two most significant digits of the print count are first displayed, followed by the four least significant digits. Next, the two most significant digits of the order count are displayed, followed by the four least significant digits. This sequence continues as long as the TOTAL mode is selected. If a display having a larger number of digits is used, the sequence in the TOTAL mode may, of course, be changed.
FIGS. 10-13C and Table 1 illustrate the operation of the print and order totalizer system of the present invention. FIGS. 10--13C are flow charts which illustrate the operation of microprocessor 170 as it relates to the print and order totalizer of the present invention. Complete assembler listings for microprocessor 170 are shown in Table 1.
It should be noted that the flow charts shown in FIGS. 10--13C represent only those portions of the operation of microprocessor 170 which are directly related to the print and order totalizer of the present invention. It is clear from the preceding discussion that microprocessor 170 controls other functions of the automatic photographic paper cutter as well. Since these functions are not directly related to the present invention, they have not been shown in flow charts, although they are included in the assembler listings shown in Table 1. For a more complete description of the operation of microprocessor 170 in the automatic photographic paper cutter, reference should be made to the previously mentioned co-pending application entitled "Microprocessor Controlled Photographic Paper Cutter."
FIG. 10 shows a portion of the ENDP routine. This routine, which is shown in greater detail in Table 1, performs the necessary functions at the end of a print. These functions include the stopping of the paper drive and the enabling of the knife assembly, so that a print is cut from the strip of photographic print paper. The portion of the ENDP routine shown in FIG. 10 deals specifically with the displaying of the number of prints cut in a particular order.
As shown in FIG. 10, the print count for each order is incremented and saved in the C register each time ENDP routine is performed. If packer 164 is connected, the print count is moved from the C register to the accumulator, and displayed on display 76. Similarly, if packer 164 is not connected, but the end of an order has been sensed, the print count is moved from the C register to the accumulator and displayed on display 76.
The effect of this routine is that the print count in an order will be displayed each time a print is cut if an automatic print packing or sorting device is used in conjunction with the automatic print cutter. If, on the other hand, the automatic paper cutter is being used without an automatic packer, display 76 only displays the print count at the end of an order and holds that print count throughout the next order until that order is completed. This allows the operator sufficient time to record the number of prints in the previous order. Since this information is necessary only when the cutter is being used without an automatic packing or sorting device, maintaining the previous print count throughout the next order is only performed when no automatic packing or sorting device is connected to the automatic paper cutter.
FIG. 11 shows the STOP routine, which occurs if the paper cutter is stopped in the middle of an order. This may occur due to some malfunction in the system or because the operator depresses the stop switch. In the STOP routine the number of prints cut this far in the order is loaded in the accumulator and displayed. The "power on" status is cleared and the microprocessor 170 returns to the WORK routine (not shown) in which the various switches on main and auxiliary control panels 72 and 74 are interrogated to determine whether any change in switch settings has been made and to determine whether the operator has initiated another print and cut cycle by depressing the start switch.
The TOTAL routine displays the totals of prints cut and orders completed since power was turned on. In the embodiment shown in FIG. 12, the two most significant digits of prints cut is first displayed, followed by the four least significant digits of prints cut. Then, the two most significant digits of orders completed are displayed, followed by the four least significant digits. This sequence is repeated, as long as the TOTAL mode is selected by the mode select switch 82.
In the TOTAL mode, therefore, the total number of prints cut and the total number of orders completed is counted, stored, and then displayed. The information provided by the TOTAL mode is particularly useful to management, since it permits an accurate determination of the performance of both the automatic paper cutter and the particular operator assigned to that paper cutter. As long as power remains on continuously, the print and order totalizer system continues to count the total number of prints and orders. It is possible, therefore, to determine the total number of prints and orders processed for each shift, or for each day, depending upon whether the power to the automatic paper cutter is turned off between shifts.
FIGS. 13A-13C illustrate the DISP routine. This routine allows either two or four digits to be displayed on digital display 76. The DISP routine is used in conjunction with the ENDP, STOP and TOTAL routines.
Conclusion
The print and order totalizer system of the present invention provides highly useful information regarding the operation of an automatic photographic paper cutter. The system counts and displays the number of prints in each order, and when the paper cutter is not being used in conjunction with an automatic packer, holds the number of prints cut in an order on the display until the next order is completed. This allows the operator time to record the number of prints in the previous order while the next order is being cut.
In addition, the print and order totalizer system displays the number of prints cut in a particular order if the paper cutter is stopped in the middle of an order. The operator may wish to record this information before restarting the automatic paper cutter.
Finally, the print and order totalizer counts and stores the number of prints cut and orders completed since the commencement of operation of the automatic paper cutter. When the TOTAL mode is selected, the total number of prints cut and the total number of orders completed is displayed.
Although the present invention has been described with reference to preferred embodiments, workers skilled in the art will recognize that changes may be made in form and detail without departing from the spirit and scope of the invention. For example, although the present invention has been described as a subsystem of an automatic photographic paper cutter, it may also be embodied as a subsystem of or an accessory to other photographic paper cutters. ##SPC1## ##SPC2## ##SPC3##

Number	Name	Date
3562491	Branfield	Feb 1971
3689742	Kagari et al.	Sep 1972
3718807	Bracken et al.	Feb 1973
3912390	Van Herten	Oct 1975

Print and order totalizer for automatic photographic paper cutter

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