US3677635A

US3677635A - Copying machine system

Info

Publication number: US3677635A
Application number: US30923A
Authority: US
Inventors: John A Van Auken; Mahlon Gene Kaufman; Fritz Blank
Original assignee: Saxon Industries Inc
Current assignee: COPYSTATICS Inc C/O LOWENTHAL A DE CORP
Priority date: 1970-04-22
Filing date: 1970-04-22
Publication date: 1972-07-18
Anticipated expiration: 1989-07-18
Also published as: NL7105461A; ZA712224B; FR2089988A5; CA943623A; AU2791471A; BE766156A; DE2119697A1

Abstract

An electrostatic copying machine system including a copying machine and a plurality of attachments therefor to enable the machine to make copies of different types of originals. The attachments include a letter copying bridge for making copies of sheet documents, a book platen for making copies of a page of a book or some other bulky article, and a microfilm scanner for making copies of a microfilm original. At the top of the basic machine there are a plurality of rollers. Each of the attachments is driven by at least one of the machine rollers, so that the original to be copied can be scanned in synchronism with the machine operation. The electrical circuit of the basic machine includes a plurality of terminals extended to respective pins in a connector at the top of the machine. Each of the attachments includes a mating electrical connector which changes the overall circuit of the machine. In this manner, each attachment causes the machine operation to be changed to meet the specific needs of the particular type of original to be copied.

Description

United States Patent Van Auken et al. [4 1 July 18, 1972 41 COPYING MACHINE SYSTEM Primary Examiner-Samuel s. Matthews [72] Inventors: John A. Van Auken, Miami Beach; Assam": Exanuner RussenE' Mahlon Gene Kaufman, Miami; Fritz Blank, Miramar, all of Fla.

Assignee: Saxon Industries, Inc., New York, NY.

Filed: April 22, 1970 Appl. No.: 30,923

11.8. C1 ..355/ll, 355/13, 355/14, 355/16, 355/25, 355/51, 355/60, 355/75 Int. Cl. ..G03b 27/62 Field ofSearch ......355/3,5,6,8, 11,13,41, 355/45, 49, 50, 60; 83/205 References Cited UNITED STATES PATENTS Okishima Sahley Towers et al.

I: ..3ss/3 Goodman et a1 ..83/205 X Attorney-Amster & Rothstein [57] ABSTRACT for making copies of a microfilm original. At the top of the basic machine there are a plurality of rollers. Each of the attachments is driven by at least one of the machine rollers, so that the original to be copied can be scanned in synchronism with the machine operation. The electrical circuit of the basic machine includes a plurality of terminals extended to respective pins in a connector at the top of the machine. Each of the attachments includes a mating electrical connector which changes the overall circuit of the machine. In this manner, each attachment causes the machine operation to be changed to meet the specific needs of the particular type of original to be copied.

67 Claims, 34 Drawing Figures Patented July 18, 1972 17 Sheets-Sheet 1 INVENTORQ lo/l V4 (/KE M GE: KIUFMAN BY FRITZ BLANK k ATTORNEYS Patented July 18, 1972 3,677,635

17 Sheets-Sheet 2 FIG. 2.

Patented July 18, 1972 17 Shuts-Shu t 5 Patented July 18, 1972 FIG. 4.

SIV-E 17 Sheets-Sheet 4 FIG. 7.

Patented July 18, 1972 3,677,635

17 Sheets-Sheet 6 w gg in Patented July 18, 1972 3,677,635

17 Sheets-Shut '7 IL K118 Patented July 18, 1972 l? Sheets-Sheet 9 Patented July 18, 1972 17 Sheets-Sheet 1O Om QE Patented July 18, 1972 3,677,635

1'7 Shuts-Shoat 11 sw-p L1 #4 g FIG. 21.

Patented July 18, 1972 17 Sheets-Sheet 12 Patented July 18, 1972 l? Sheets-Shoot 15 Patented July 18, 1972 Q 3,677,635

17 Sheets-Sheet 15 O 433 494 301- .h i W 'l" FIG. 29.

Patented July 18, 1972 3,677,635 I 17 SheetsSheet 16 gijiiilir mglrnn-nu III] COPYING MACHINE SYSTEM This invention relates to copying machines, and more particularly to a copying machine system in which a plurality of attachments can be placed on a single copying machine to enable the copying machine to operate in different modes.

There are many difierent types of copying machines on the market at the present time. Each of these machines generally is capable of operating in only a single mode. For example, there are machines which are capable of making copies only of sheet documents (letters, etc.). Such machines cannot make copies of a page of a book, for example, because typically the document to be copied must be moved through the machine and the original transport system cannot accept a book or other bulky article for transport. Other machines are capable of copying a page of a book. A book can'be placed on top of a stationary scanning window with the page to be copied being scanned by a moving optical system, or the book can be placed on top of a glass platen which is moved past a stationary optical system. Book copiers are also capable of copying sheet documents (a sheet document can be thought of as a very thin book). A third type of machine is one which makes paper copies of microfilm originals. A survey of the machines presently on the market reveals that each machine is generally capable of operating in only a single mode for example, as a letter copier, as a book copier, or as a microfilm copier.

Most businesses, if they require a copying machine at all, generally have a need to make copies of sheet documents. Letter copiers are usually smaller and faster than copying machines of other types. An example of a small, fast letter copier is disclosed in Van Auken et al. application Ser. No. 725,390, filed on Apr. 30, 1968 now US. Pat. No. 3,575,503. In the Van Auken et al. machine, letters can be fed in succession, one immediately after the other, into the nip of input rollers, the successive original documents being collected in an original tray and the copies being collected in a copy tray. While a letter copier is the most commonly required type of copying machine, on occasions there is a need to make a copy of a page of a book. Thus, those businesses requiring bookcopying capabilities generally purchase a book copier (which can make copies of letters as well). In order to acquire the relatively infrequently used book copying capability, a number of inconveniences must be put up with. First, the book copier generally requires more space. It is also much slower even when copying letters because it takes longer to remove a first letter from the platen after it is copied before another is put in place than it does to simply feed letters in succession into the nip of input rollers.

Finally, where it is necessary to copy microfilm originals, it has been the practice to purchase an additional machine for this purpose at significantly increased total cost and at the expense of space.

It is a general object of our invention to provide a copying machine system which includes a copying machine and various attachments therefor, the copying machine being designed to cooperate differently with each attachment in order to operate in a different mode.

The illustrative embodiment of our invention includes a copying machine similar to that disclosed in the Van Auken et al. application. At the top of the machine there is provided a' plurality of rollers which can be rotated in either direction by an original drive chain in the machine. The machine includes an electrical circuit for controlling energization of the exposure lamps, the operation of a knife to cut copy sheets from a roll of copy paper, switching of the direction of movement of the rollers at the top of the machine, etc. The electrical circuit is not complete; various points in the circuit terminate at pins in an electrical connector placed on top of the machine.

The letter copying attachment consists of a bridge which is placed on top of the machine. The bridge includes another set of mating rollers which are driven by the rollers in the copying machine. Together, the pairs of rollers transport an original document between the top of the machine and the bottom of the bridge. The document is shuttled back and forth (as in the Van Auken et al. machine) when it is necessary to make multiple copies of the same original. The bridge includes a connector which mates with the machine connector. The bridge connector serves to complete the electrical circuit of the copying machine in order that the machine operate in the letter copying mode. The bridge also includes a plurality of photocells which are energized by exciter lamps at the top of the copying machine. The photocells determine the position of the original document underneath the bridge. The photocells are included in the bridge electrical circuit coupled to the machine circuit, and the photocell outputs control the machine to cut a roll of copy paper at the appropriate times, to reverse the direction of rotation of the machine rollers, etc. With the letter bridge on top of the machine, there results an overall configuration whose operation is similar to that of the Van Auken et al. machine, and which offers all of the advantages of a letter copier, including fast operation and compact size.

The second attachment, the book copier attachment, includes a glass platen which is placed on top of the machine. The glass platen is moved back and forth by the machine rollers, a book on top of the platen thus being moved back and forth past the scanning window on top of the machine. The book copier attachment includes a cam which can be set to correspond to the length of the original page to be copied. A series of rnicroswitches are provided on top of the copying machine, and as the glass platen is moved back and forth by the machine rollers, the cam operates the microswitches to synchronize the machine operation to the position of the platen. The book copier attachment includes an electrical connector which mates with the machine connector to thereby change the electrical circuit of the machine so that it operates in the book copying mode. For example, unlike the letter copying mode, there is no need to utilize the photocell amplifiers in the machine when operating in the book copying mode. There are also some additional significant differences in the machine operation in the book copying mode which will become apparent below.

There is also a mechanical change made in the basic machine when the book copier attachment is placed on it. The glass platen has a certain thickness which would otherwise increase the optical path of light reflected from the original to be copied and transmitted to the exposure station where it strikes the copy sheet. If the optical path of the basic machine is designed to properly focus light reflected from an original document (on top of the machine) on the copy sheet, the increased optical path length as a result of the thickness of the glass platen would result in imperfect focusing of the light reflected from a book (or original document) placed on the glass platen. For this reason, when the book copier attachment is placed on the machine, it causes a lever to move, which lever in turn repositions a mirror inside the copying machine. The repositioned mirror serves to shorten the optical path inside the machine. The total length of the optical path resulting from the increase caused by the glass platen and the decrease caused by the repositioned mirror provides perfect focusing.

The book copier attachment includes a pair of rails which extend outward from the machine; the rails are required to support and guide the glass platen as it is moved back and forth by the machine rollers. The rails necessarily increase the size of the overall machine. However, the rails and the glass platen can be attached to or removed from the copying machine in less than a minute. (Similar remarks apply to the letter copier bridge.) This means that in ordinary operation, the letter copier bridge can be left on the machine, thereby resulting in the most compact arrangement possible as well as maximum speed in the successive feeding in of original documents to be copied. Only when it is required to make a copy of a bulky article, such as a book, does the letter copier bridge have to be removed and the book copier attachment placed in its stead on top of the machine. After the necessary copies are made, the letter copier bridge can be placed back on the machine. This arrangement allows the advantages of both types of prior art machines to be obtained, without requiring two different machines for the purpose.

The third attachment, the microfilm scanner" or microfilm reader" is similarly placed on top of the copying machine. The unit includes a mechanism for holding a microfilm original, a projector lamp, a screen for viewing an enlargement of the microfilm original, and in general those features generally found in a microfilm reader. The microfilm reader also includes a mirror which can be moved between two positions in accordance with the operation of a solenoid. In a first position, the mirror directs the microfilm image to the screen. In this manner, a microfiche card, for example, can be positioned until the desired frame is selected. In the second position, the mirror allows the light to be projected through the microfilm to the scanning window of the copying machine. This light is used to expose the copy paper.

It is necessary to move the microfilm image as the copy sheet is moved through the machine so that they are in optical synchronization with each other. (Movement of the microfilm in this manner corresponds to movement of a letter through the letter copying bridge or movement of the book copier glass platen.) The microfilm scanner includes a roller which engages one of the machine rollers and is driven thereby. The machine roller controls movement of the microfilm to be copied. But a completely different sequence of roller movements is required for the microfilm reader. (For example, the microfilm must first be transported in the reverse direction after selection of the frame to be copied inasmuch as when a frame is selected, it is centered with respect to the scanning window rather than being in front of it.) This will become apparent below. The microfilm reader includes a cam which is driven by the machine roller, as well as a group of microswitches operated by the cam. As the cam rotates, the microswitch operations indicate the position of the microfilm frame to be copied. The microswitches are extended to an electrical connector on the microfilm reader which engages the electrical connector on the machine. The resulting overall electrical circuit is different from the letter copier and book copier circuits and enables the overall machine to function in a third mode. The microfilm reader further includes additional mechanisms, such as a solenoid for moving the mirror to control either imaging of the microfilm frame on the screen or the transmission of the light projected through it to the machine scanning window. The solenoid is similarly coupled to the electrical circuit of the copying machine through the electrical connectors, and is thus operated at the appropriate times to control scanning.

On those occasions when it is necessary to make a paper copy of a microfilm original, all that is required is to remove the letter copier bridge from the machine and to replace it by the microfilm reader. The microfilm reader (as also the letter and book copiers) can be operated in a multiple copy mode so that multiple copies of a selected microfilm frame can be made. After the microfilm reader is thus used, it can be replaced by the letter copier bridge which prepares the machine for its usual mode of operation. Instead of requiring a separate machine for the purpose of making copies of a microfilm original, all that is required is a relatively simple microfilm reader attachment for the basic machine. I

It is a feature of our invention to provide a copying machine having an electrical circuit temiinating at a number of points in an electrical connector, the machine operating in difierent modes depending on particular attachments placed thereon, each attachment including a mating electrical connector for completing the overall electrical circuit of the machine in a different manner. (Although the illustrative embodiment of the invention is described with reference to only three attachments, other attachments, such as an original feeder, can be used with the copying machine, as will be apparent to those skilled in the art.)

It is another feature of our invention to provide a drive mechanism at an exposed surface of the copying machine for engaging any of several attachments placed on the machine to thereby control the movement of various elements in the attachment in synchronization with the operation of the copying machine.

Further objects, features and advantages of our invention will become apparent upon consideration of the following detailed description in conjunction with the drawing, in which:

FIG. 1 is the same as FIG. 1 in the Van Auken et al. applica-' tion and depicts the general lay-out of the various elements included in the copying machine of our invention;

FIG. 2 is a side view of the copying machine of our invention (with the side cover removed) and depicts the chains for driving various elements in the machine, and the positions of four switches and a start button on top of the machine;

FIG. 3 depicts schematically the control circuit of the copying machine of FIG. 2 (which machine includes the various internal elements shown in FIG. 1), various points in the circuit being connected to respective pins in connector 132 on top of the machine;

FIG. 4 depicts various cams and switches contained within two cover plates 70 (shown in FIG. 2);

FIG. 5 depicts the two switches and cams which control multiple copying of an original and are included in the copying machine;

FIG. 6 depicts another switch and cam included in the copying machine;

FIG. 7 depicts the shape of cam 96 of FIG. 4, together with three dimensions thereof;

FIG. 8 is a plan view showing the top of the machine of FIG. 2 with no attachment placed on it;

FIG. 9 is a top plan view of the fust attachment, the letter bridge, when placed on top of the copying machine;

FIG. 10 is a sectional view of the letter bridge taken through the line 10-10 of FIG. 9;

FIG. 1 1 is a bottom plan view of the letter bridge of FIG. 9;

FIG. 12, a sectional view taken through line 12-12 of FIG. 9, depicts the locking mechanism for securing the letter bridge to the top of the copying machine;

FIG. 13 illustrates the pin connections in connector 201 of the letter bridge;

FIG. 14 depicts the circuit of FIG. 3 which results when connector 201 of the letter bridge is mated with connector 132 on the copying machine (which connector has various pins coupled to numerous points in the circuit of FIG. 3);

FIG. 15 is a top plan view of the copying machine with the second attachment, the book copier, secured in place;

FIG. 16 is a side view of the copying machine, shown partially broken away, and illustrates the manner in which rails 151 and 152 are attached to the machine, and the manner in which lever 162 is moved when rail 151 is put in place;

FIG. 17 depicts the manner in which mirror 176 is moved within the machine when rail 151 is put in place;

FIG. 18 is a sectional view taken through the line 18-18 of FIG. 15;

FIG. 19 is similar to FIG. 18 but shows movable cam 154 moved to the left relative to the position shown in FIG. 18;

FIG. 20 is a sectional view taken through the line 20-20 of FIG. 15;

FIG. 21 illustrates the connections made in electrical connector 188 of the book copier;

FIG. 22 shows the copying machine control circuit which results when connector 188 of the book copier is mated with connector 132 on the copying machine;

FIG. 23 is a sectional view of the third attachment, the microfilm reader, when placed on the copying machine of our invention, FIG. 23 being a sectional view taken through line 23-23 of FIG. 26;

FIG. 24 illustrates the sequence in which a microfilm frame 464 is moved during a copying cycle;

FIG. 25 is a side view of the microfilm reader attached to the copying machine;

FIG. 26 is a top plan view of that part of the microfilm reader attached to the copying machine;

Claims

1. A copying machine system for copying plural types of original documents comprising a copying machine; said copying machine having a scanning window and motion-imparting means disposed at the exterior thereof, means for moving said motion-imparting means in either a first direction or in a second direction opposite to said first direction, an exposure window, means for transporting copy paper past said exposure window, optical means for scanning said original document to be copied as said original document is moved past said scanning window and in response thereto for exposing said copy paper at said exposure window, control circuit means for selectively controlling movement of said motion-imparting means in said first and second directions and movement of said copy paper transporting means, and copying machine electrical connector means disposed on the exterior of the copying machine for selectively changing said control circuit means in accordance with connections made thereto; and at least two copying attachments for placement on said copying machine, each of said attachmentS including means for engaging said copying machine motion-imparting means and for controlling movement of a different one of said plural types of original documents to be copied in either of said first and second directions dependent upon the direction of movement of said copying machine motion-imparting means, and attachment electrical connector means on each of said at least two attachments for mating with said copying machine electrical connector means, each of said attachment electrical connector means functioning to modify said copying machine control circuit means to sequence differently in accordance with the type of said original document to be copied.

2. A copying machine system in accordance with claim 1 wherein one of said attachments is a letter bridge for controlling the copying of said original document, said bridge including said means for engaging said copying machine motion-imparting means and for moving said original document through the bridge in either of said first and second directions dependent upon the direction of movement of said motion-imparting means, a plurality of means in the bridge for detecting the position of said original document moved therethrough relative to said copying machine scanning window, and means in the bridge for connecting said plurality of detecting means to said attachment electrical connector means, said copying machine control circuit means being connectable to said bridge detecting means through said copying machine electrical connector means for sequencing in accordance with the position of the detected original document as it is moved through the bridge.

3. A copying machine system in accordance with claim 2 wherein said copying machine control circuit means includes means for controlling the making of multiple copies of said original document to be copied, said multiple copy controlling means including means for controlling the sequencing of said control circuit means such that said copying machine motion-imparting means alternates in direction to move said original document to be copied in said first and second directions through said bridge past the scanning window on said copying machine, and means controlled by one of said detecting means in said bridge, connected to said copying machine control circuit means through said copying machine and said attachment electrical connector means, for causing said copy paper to start moving toward said exposure window while said original document is being moved in said second direction past said scanning window.

4. A copying machine system in accordance with claim 3 further including exposure lamp means in the copying machine for illuminating said scanning window, and means for energizing said exposure lamp means over a circuit path connected thereto which is completed through said copying machine and said attachment electrical connector means.

5. A copying machine system in accordance with claim 3 wherein each of said copying machine motion-imparting means and said means for engaging said copying machine motion-imparting means is at least one roller.

6. A copying machine system in accordance with claim 5 including means for moving said copying machine roller faster in said second direction than in said first direction.

7. A copying machine system in accordance with claim 1 wherein each of said copying machine motion-imparting means and said means for engaging said copying machine motion-imparting means is at least one roller.

8. A copying machine system in accordance with claim 7 further including exposure lamp means in the copying machine for illuminating said scanning window, and means for energizing said exposure lamp means over a circuit path connected thereto which is completed through said copying machine and said attachment electrical connector means.

9. A copying machine system in accordance with claim 7 including means for moving said copying machine roller faster in said second direction than in said first direction.

10. A copying machine system in accordance With claim 1 including means for moving said motion-imparting means faster in said second direction than in said first direction.

11. A copying machine system in accordance with claim 1 further including exposure lamp means in the copying machine for illuminating said scanning window, and means for energizing said exposure lamp means only if a circuit path connected thereto is completed through said copying machine and said attachment electrical connector means.

12. A copying machine system in accordance with claim 1 wherein one of said attachments is a book copier and includes a platen for engaging said copying machine motion-imparting means when placed thereon, and means attached to said platen for moving therewith and for operating a plurality of switches to control the sequencing of said copying machine control circuit means such that said platen is first moved in said first direction and then in said second direction past said copying machine scanning window when a copy is made of said original document placed on said platen.

13. A copying machine system in accordance with claim 12 wherein said copying machine further includes a roll of copy paper, a knife for cutting a sheet of copy paper from said roll of copy paper, and said platen switch-operating means is adjustable in accordance with the length of said original document to be copied to operate said switches such that said control circuit means causes said knife to cut a copy sheet from said copy paper roll whose length corresponds to the length of said original document to be copied.

14. A copying machine system in accordance with claim 12 wherein said original document to be copied is placed on said platen such that its forward edge is in front of the scanning window on top of said copying machine at the start of a copying cycle, means for starting a copying cycle, means responsive to the operation of said starting means for moving a copy sheet toward said exposure window while said copying machine motion-imparting means is kept stationary, and means included in said control circuit means for initiating the operation of said motion-imparting means to move said platen in said first direction past said scanning window at a time such that said original document and said copy paper are in optical synchronization when said copy paper is exposed.

15. A copying machine system in accordance with claim 14 further including means in said copying machine for controlling the making of multiple copies of said original document to be copied, and means responsive to the operation of said multiple copying controlling means and the operation of one of said switches by said platen switch-operating means while said platen is still being returned in said second direction past said scanning window for controlling the start of said copy paper movement for the next copying cycle.

16. A copying machine system in accordance with claim 15 wherein said copying machine optical means includes a mirror, and mechanical means on said copying machine responsive to the placement of the book copier attachment thereon for moving said mirror within the copying machine.

17. A copying machine system in accordance with claim 16 wherein said book copier attachment includes a pair of rails for placement on said copying machine to support said platen as it is moved by said motion-imparting means, and one of said rails is operative to bear against said mechanical means for causing said mirror to move.

18. A copying machine system in accordance with claim 16 wherein said copying machine motion-imparting means is at least one roller.

19. A copying machine system in accordance with claim 18 including means for moving said copying machine roller faster in said second direction than in said first direction.

20. A copying machine system in accordance with claim 12 wherein said copying machine motion-imparting means is at least one roller.

21. A copying machine system in accordance with claim 20 including means for moving said copying machine Roller faster in said second direction than in said first direction.

22. A copying machine system in accordance with claim 21 wherein said copying machine optical means includes a mirror, and mechanical means on said copying machine responsive to the placement of the book copier attachment thereon for moving said mirror within the copying machine.

23. A copying machine system in accordance with claim 12 wherein different optical path lengths exist between said scanning window and said exposure window, and said book copier platen and said exposure window, and means responsive to the placing of said book copier attachment on said copying machine for correcting the respective optical path length.

24. A copying machine system in accordance with claim 23 wherein said copying machine optical means includes a mirror, and mechanical means on said copying machine responsive to the placement of the book copier attachment thereon for moving said mirror within the copying machine.

25. A copying machine system in accordance with claim 12 wherein said platen switch-operating means is a cam whose length is adjustable in accordance with the length of said original document to be copied.

26. A copying machine system for copying plural types of original documents comprising a copying machine; said copying machine having a scanning window and motion-imparting means disposed at the exterior thereof, means for moving said motion-imparting means, an exposure window, means for transporting copy paper past said exposure window, optical means for scanning said original document to be copied as said original document is moved past said scanning window and in response thereto for exposing said copy paper at said exposure window, control circuit means for selectively controlling movement of said motion-imparting means and movement of said copy paper transporting means, and copying machine electrical connector means disposed on the exterior of the copying machine for selectively changing said control circuit means in accordance with connections made thereto; and at least two copying attachments for placement on said copying machine, each of said attachments including means for engaging said copying machine motion-imparting means and for controlling movement of a different one of said plural types of original documents to be copied, and attachment electrical connector means on each of said at least two attachments for mating with said copying machine electrical connector means, each of said attachment electrical connector means functioning to modify said copying machine control circuit means to sequence differently in accordance with the type of said original document to be copied.

27. A copying machine system in accordance with claim 26 wherein one of said attachments is a letter bridge for controlling the copying of said original document, said bridge including said means for engaging said copying machine motion-imparting means and for moving said original document through the bridge, a plurality of means in the bridge for detecting the position of said original document moved therethrough relative to said copying machine scanning window, and means in the bridge for connecting said plurality of detecting means to said attachment electrical connector means, said copying machine control circuit means being connectable to said bridge detecting means through said copying machine electrical connector means for sequencing in accordance with the position of the detected original document as it is moved through the bridge.

28. A copying machine system in accordance with claim 26 wherein each of said copying machine motion-imparting means and said means for engaging said copying machine motion-imparting means is at least one roller.

29. A copying machine system in accordance with claim 28 further including exposure lamp means in the copying machine for illuminating said scanning window, and means for energizing said exposure lamp means over a circuit path connected thereto which is completed through Said copying machine and said attachment electrical connector means.

30. A copying machine system in accordance with claim 28 including means for moving said copying machine roller faster in a second direction than in a first direction.

31. A copying machine system in accordance with claim 26 including means for moving said motion-imparting means faster in a second direction than in a first direction.

32. A copying machine system in accordance with claim 26 further including exposure lamp means in the copying machine for illuminating said scanning window, and means for energizing said exposure lamp means only if a circuit path connected thereto is completed through said copying machine and said attachment electrical connector means.

33. A copying machine system in accordance with claim 26 wherein one of said attachments is a book copier and includes a platen for engaging said copying machine motion-imparting means when placed thereon, and means attached to said platen for moving therewith and for operating a plurality of switches to control the sequencing of said copying machine control circuit means.

34. A copying machine system in accordance with claim 33 wherein said copying machine further includes a roll of copy paper, a knife for cutting a sheet of copy paper from said roll of copy paper, and said platen switch-operating means is adjustable in accordance with the length of said original document to be copied to operate said switches such that said control circuit means causes said knife to cut a copy sheet from said copy paper roll whose length corresponds to the length of said original document to be copied.

35. A copying machine system in accordance with claim 33 wherein said original document to be copied is placed on said platen such that its forward edge is in front of the scanning window on top of said copying machine at the start of a copying cycle, means for starting a copying cycle, means responsive to the operation of said starting means for moving a copy sheet toward said exposure window while said copying machine motion-imparting means is kept stationary, and means included in said control circuit means for initiating the operation of said motion-imparting means to move said platen in a first direction past said scanning window at a time such that said original document and said copy paper are in optical sychronization when said copy paper is exposed.

36. A copying machine system in accordance with claim 35 wherein said copying machine optical means includes a mirror, and mechanical means on said copying machine responsive to the placement of the book copier attachment thereon for moving said mirror within the copying machine.

37. A copying machine system in accordance with claim 36 wherein said book copier attachment includes a pair of rails for placement on said copying machine to support said platen as it is moved by said motion-imparting means, and one of said rails is operative to bear against said mechanical means for causing said mirror to move.

38. A copying machine system in accordance with claim 36 wherein said copying machine motion-imparting means is at least one roller.

39. A copying machine system in accordance with claim 33 wherein said copying machine motion-imparting means is at least one roller.

40. A copying machine system in accordance with claim 33 wherein said copying machine optical means includes a mirror, and mechanical means on said copying machine responsive to the placement of the book copier attachment thereon for moving said mirror within the copying machine.

41. A copying machine system in accordance with claim 40 wherein said platen switch-operating means is a cam whose length is adjustable in accordance with the length of said original document to be copied.

42. A copying machine system in accordance with claim 33 wherein said platen switch-operating means is a cam whose length is adjustable in accordance with the length of said original document to be copied.

43. A copying machinE comprising a scanning window and motion-imparting means disposed adjacent thereto, means for moving said motion-imparting means in either a first direction or in a second direction opposite to said first direction, an exposure window, means for transporting copy paper past said exposure window, optical means for scanning an original document to be copied as said original document is effectively moved past said scanning window and in response thereto for exposing said copy paper at said exposure window, control circuit means for selectively controlling movement of said motion-imparting means in said first and second directions and movement of said copy paper transporting means, a platen for engaging said motion-imparting means when placed thereon wherein different optical lengths exist between said platen and said exposure window, and said scanning window and said exposure window, means responsive to the placing of said platen on said motion-imparting means for correcting the respective optical path length, and means attached to said platen for moving therewith and for operating a plurality of switches to control the sequencing of said control circuit means such that said platen is first moved in said first direction and then in said second direction past said scanning window when a copy is made of said original document placed on said platen.

44. A copying machine in accordance with claim 43 further including a roll of copy paper, a knife for cutting a sheet of copy paper from said roll of copy paper, and wherein said platen switch-operating means is adjustable in accordance with the length of said original document to be copied to operate said switches such that said control circuit means causes said knife to cut a copy sheet from said copy paper roll whose length corresponds to the length of said original document to be copied.

45. A copying machine in accordance with claim 43 wherein said original document to be copied is placed on said platen such that its forward edge is in front of said scanning window at the start of a copying cycle, means for starting a copying cycle, means responsive to the operation of said starting means for moving a copy sheet toward said exposure window while said copying machine motion-imparting means is kept stationary, and means included in said control circuit means for initiating the operation of said motion-imparting means to move said platen in said first direction past said scanning window at a time such that said original document and said copy paper are in optical synchronization when copy paper is exposed.

46. A copying machine in accordance with claim 45 further including means for controlling the making of multiple copies of said original document to be copied, and means responsive to the operation of said multiple copying controlling means and the operation of one of said switches by said platen switch-operating means while said platen is still being returned in said second direction past said scanning window for controlling the start of said copy paper movement for the next copying cycle.

47. A copying machine in accordance with claim 46 wherein said optical means includes a mirror, and mechanical means responsive to the placement of said platen on said motion-imparting means for moving said mirror.

48. A copying machine in accordance with claim 47 further including a pair of removable rails for supporting said platen as it is moved by said motion-imparting means, one of said rails being operative to bear against said mechanical means for causing said mirror to move.

49. A copying machine in accordance with claim 47 wherein said motion-imparting means is at least one roller.

50. A copying machine in accordance with claim 49 including means for moving said roller faster in said second direction than in said first direction.

51. A copying machine in accordance with claim 43 wherein said motion-imparting means is at least one roller.

52. A copying machine in accordance with claim 51 including means for moving said rolLer faster in said second direction than in said first direction.

53. A copying machine in accordance with claim 52 wherein said optical means includes a mirror, and mechanical means responsive to the placement of said platen on said motion-imparting means for moving said mirror.

54. A copying machine in accordance with claim 43 wherein said optical means includes a mirror, and mechanical means responsive to the placement of said platen on said motion-imparting means for moving said mirror.

55. A copying machine in accordance with claim 54 wherein said platen switch-operating means is a cam whose length is adjustable in accordance with the length of the original to be copied.

56. A copying machine in accordance with claim 43 wherein said platen switch-operating means is a cam whose length is adjustable in accordance with the length of the original to be copied.

57. A copying machine comprising a scanning window and motion-imparting means disposed at the exterior thereof, a copying attachment adapted to be placed on said copying machine, said motion-imparting means for transferring motion to said attachment, means for moving said motion-imparting means, an exposure window, means for transporting copy paper past said exposure window, optical means for scanning at least two types of original documents to be copied as said original documents are effectively moved past said scanning window and in response thereto for exposing said copy paper at said exposure window, control circuit means for selectively controlling movement of said motion-imparting means and movement of said copy paper transporting means, and electrical connector means disposed on the exterior of the copying machine for selectively changing said control circuit means in accordance with connections made thereto by said attachment placed on the copying machine, said control circuit means being changeable to sequence in at least two different modes for said at least two types of original documents to be copied.

58. A copying machine in accordance with claim 57 wherein said motion-imparting means is at least one roller.

59. A copying machine in accordance with claim 58 further including exposure lamp means for illuminating said scanning window, and means for energizing said exposure lamp means over a circuit path connected thereto which is completed through said electrical connector means and said attachment placed on the copying machine.

60. A copying machine in accordance with claim 58 wherein said control circuit means includes means for controlling said at least one roller to move faster in a second direction than in a first direction.

61. A copying machine in accordance with claim 57 wherein said control circuit means includes for controlling said motion-imparting means to move faster in a second direction than in a first direction.

62. A copying machine in accordance with claim 57 further including exposure lamp means for illuminating said scanning window, and means for energizing said exposure lamp means over a circuit path connected thereto which is completed through said electrical connector means and said attachment placed on the copying machine.

63. A copying machine in accordance with claims 57 further including a platen placed on said motion-imparting means and moved therewith, a plurality of switches on top of the copying machine adapted to be operated by said platen, said plurality of switches being connected to said control circuit means to control the sequencing thereof in accordance with the position of said platen.

64. A copying machine in accordance with claim 63 wherein all of said plurality of switches are normally open.

65. A copying machine in accordance with claim 63 wherein said optical means includes a mirror, and mechanical means responsive to the placement of said attachment on the copying machine for moving said mirror within the copying machine.

66. A copying machine in accordance with claim 65 wherein said motion-imparting means is at least One roller.

67. A copying machine in accordance with claim 57 wherein said optical means includes a mirror, and mechanical means responsive to the placement of said attachment on the copying machine for moving said mirror within the copying machine.