JPS60175061A - Apparatus for making double-side copy from single side original - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION INDUSTRIAL FIELD The present invention relates to an apparatus for copying fifteen single-sided originals to produce a set of double-sided copies.

More particularly, the present invention relates to an electrophotographic apparatus for copying a set of single-sided originals to create a set of double-sided copies having a subset of pages having selected characteristics.

In the field of prior art copying machines, there has been a trend toward ever increasing copying speeds with as little intervention as possible from the printer in order to maintain high speed copying output.

For this reason, manual placement of the original on the exposure platen of the copier to make a copy of each original is replaced by a relatively high-speed copying machine equipped with an automatic feeder that automatically +C supplies the original to the exposure platen of the copier. It has been replaced by a machine. Regardless of whether the original is placed on the platen manually or by an automatic feeder, the copier can make a single-sided copy from a single-sided original, a single-sided copy from a double-sided original, a double-sided copy from a single-sided original, and a double-sided copy from a double-sided original. It is possible to make double-sided copies. For example, U.S. Pat. No. 4,158,500 discloses an apparatus for making double-sided or single-sided copies from double-sided and single-sided originals. The copier includes a recirculating feeder for sequentially feeding single-sided or duplex originals to the exposure platen of the copier for forming images on copy sheets in either simplex or duplex modes. U.S. Pat. No. 4,191,465 discloses an apparatus capable of operating in duplex and simplex modes to produce copies with images on one or both sides of the copy sheet once passed through the copier. The apparatus is equipped with a circulating feeder for positioning single-sided or double-sided originals on the exposure platen of the copier.

It has been found that in a set of originals it is preferable to process certain selected originals separately from the other originals of the set. In U.S. Pat. No. 4,248,528, in order to program the copier to process selected documents in a particular way, O. Disclosed.

This device is disadvantageous in that the special scanning device and control paper add cost and complexity to the copier. In U.S. Pat. No. 4,310,235, the playback device is
A card reader is provided to read marked cartons containing work flow information such as selecting single-sided printing for a duplex copying operation, or vice versa. This card reader is also a complex and expensive means of controlling the copier. Thus, U.S. Pat. Nos. 4,248,528 and 4,3
The apparatus disclosed in No. 10,235 does not provide a satisfactory solution to the problem of controlling a copying machine to process selected originals that are distinct from the others in a set of originals. Further, these patents provide that a set of double-sided copies can be automatically created from a single-sided original set in which the set of double-sided copies is separated into subsets with the first page of each subset on the front side. It does not disclose that it is desirable.

OBJECTS OF THE INVENTION It is an object of the present invention to overcome the aforementioned problems of prior art devices and to be able to reproduce a set of single-sided originals as a double-sided copy, the double-sided copy copying the first page of each subset copied on its front page. The purpose of the present invention is to provide a copying machine that can be divided into small sets or sections.

Summary of the invention The object of the invention is achieved by the following device.

means for receiving single-sided originals of i, l11 at a receiving position and sequentially circulating each original from the receiving position to an exposure position and then back to the receiving position; and image forming means for forming an image of the original at the exposure position. a supply means for supplying copy paper to receive an image from said image forming means; and means operable by an operator for selecting operating mode 1.
The means operable by the operator include means for designating an individual single-sided original as the first page of a subset;
1) In setting mode 5, O is 1 under the control of the controller.
(2) in an imaging mode, (b) controlling said circulation means to circulate said single-sided original to said exposure position; controlling the image forming means to sequentially form images of the original; supplying a sheet of paper for copying to the image forming means; The apparatus further comprises a control means for controlling the feeding means to receive the single-sided original image on the front and back sides of the copy sheet on the first page.

DESCRIPTION OF THE PREFERRED EMBODIMENTS To aid in understanding the present invention, it may be useful to consider an electrophotographic reproduction machine having a logic and control unit, an operator control panel, and a circulating original feeder. Although the invention is suitable for use in recirculating feeders, it may also be used in other types of feeders.

First, in FIG. 1, photoconductive belt 12 is attached to roller 1.
4.16.18.20 and 22, an electrophotographic copier 10 is shown hanging around the periphery. The belt 12 is
A motor 26 mechanically connected to the roller 22 causes the arrow shift! It is moved in the opening direction as shown by 4. Copying Machine], 0 has an exposure position including an exposure platen 28.

Located on top of exposure platen 28 is a recirculating feeder 30 having a receiving location, such as a tray 32, for receiving a set of originals 34. Generally, circulating feeder 3
0 sequentially circulates originals 34 from the bottom of tray 32 along path 36 to exposure platen 28 and then back to the top of the set of originals in tray 32. This is accomplished by a feed roller 38 which transports the lowest original in the tray 32 between a guide roller 40 and a guide 42 relative to the platen 28, where the original is stopped by a gate 44.

After being exposed to light from the flash lamps 46 and 48, the gate 44
are removed from path 36 and rollers 50.52.54.56
God 58 returns the original 34 to the top of the set of originals in the tray 32. As described in more detail below, as the original 34 moves away from the tray 32 along the path 36, the detection device 60 generates a count signal that is provided to the logic and control device 62. . A set count finger 67 is also provided which rests on top of the set of originals and indicates when the set of originals has been circulated through the feeder 301.

Referring to FIG. 1, an imaging means 69 adapted to form a transferable image of original 34 on exposure platen 28 is shown.

When an original is illuminated by a flash lamp 46, 48, an image is produced, which is reflected by the mirror 64, lens 6.
6 and mirror 68 onto belt 12 at exposure station 70 . In front of the exposure station 70 is a charging station that includes a corona charger 72 that renders the belt 12 photosensitive by imparting an electrostatic charge (eg, a negative electrostatic charge).

At exposure station 70, the projected light image dissipates the electrostatic charge on the exposed areas of the photoconductor to form an electrostatic latent image corresponding to the original image.

This electrostatic latent image is developed at a magnetic brush development station 73 that provides a developer material containing iron carrier particles and electrostatic toner particles with an electrostatic charge (e.g., a positive charge) opposite to that of the electrostatic latent image. be done.

The toner image is exposed to post-development erase lamp 75 to reduce electrical stress on photoconductive belt 12 and to reduce attraction between the toner image and belt 12.

As the toner image approaches the transfer corona charger 74, the copy paper 76 is moved by the feed roller 80 to the supply source 7.
8 or from a supply source 82 by a feed roller 84 to an alignment mechanism 86 . At a reasonable time,
Alignment mechanism 86 releases paper 76 which is moved into alignment with the toner image of bell) 121 in front of corona charger 74. The charged body 74 transfers the toner image onto the paper 76 by applying an electrostatic charge (for example, a negative charge) having a polarity opposite to that of the toner image. The charge canceling member 88 neutralizes the electric charge on the copy paper 76 so that the copy paper 76 is separated at the roller 18 . The paper 76 is transferred to a heated fusing roller 90.9.
2 to permanently fuse the toner image to paper 76. The copy sheet is then fed to either the top output tray 94 or the side output tray 96.

A cleaning station 98 is provided for mechanical and electrical cleaning of photoconductive belt 12. Station 98 includes an auxiliary cleaning erase lamp 100 that directs light onto photoconductive belt 12 to substantially reduce the charge remaining on the belt 12 and an auxiliary cleaning erase lamp 100 that illuminates photoconductive belt 12 to neutralize the charge on the toner particles that have not been transferred. It includes a cleaning aid charger 102 that applies an alternating current charge and a brush 104 that removes residual toner from belt 12 in preparation for the next xerographic cycle.

Belt 12 has a plurality of perforations along one of its edges in order to correlate the operation of the various instrumentations of copier 10, including feeder 30, with movement of the image area of belt 12. These perforations are typically evenly spaced along the edge of belt 12. for example,
Belt 12 is divided into six image areas by F perforations, and each image area is further divided into 51 sections by C perforations. The relationship of the F and C perforations to the image area is disclosed in detail in US Pat. No. 3,914,047. A detector 106 is provided at a fixed location along the path of travel of the belt 12 for detecting perforations in the belt and providing timing pulses to the logic and control device 62. encoder 108
provides a series of timing pulses to a logic and control device 62 that is connected to rollers 22 and used in conjunction with the pulses from detector 106 to control the operation of copying machine 10.

Next, in FIG. 2, the operator control panel 110
An exemplary logic and control unit (LCU) 62 is shown in further detail with connected thereto. LCU 62 includes a programmable computer, such as microprocessor 11, that has stored programs that sequentially energize various instrumentation components of copier 1.0 and feeder 300 in response to input signals. The LCU62 is also described in U.S. Patent No. 3,914,0
47, which controls the operation of many other functions of copier JO, as disclosed in further detail in No. 47.

Programming many commercially available microprocessors, such as the Intel Model 8085 (which can be used with others in accordance with the present invention), is a technique well known in the art. The following disclosure is provided to enable programmers of ordinary skill in the art to provide suitable control programs for microprocessors.

In theory, the specific details of such a program will depend on the specified microprocessor architecture.

In FIG. 2, a block diagram of logic and control unit 620 interfacing with copier 10 and feeder 3° is shown. Further details of feeder 300 operation and construction are disclosed in US Pat. No. 4,099,860. L CU62 is a memo IJ for temporary data storage.
-112, a central processing unit 114, a timing and cycle control unit 116, and a stored program control unit 118 including read only memory (ROM). Data input/output is performed sequentially under zologram control. Input data is provided to LCU 62 via input signal buffer I20 to input data latch 122 or input signal buffer 120 to interrupt signal processor 124. Input signals include various switches such as those provided on operator control panel 110, timing pulses such as from detector 106 and encoder 108, and various analog/
Obtained from digital converter. Output data and control signals are provided to output data storage latches 126 that provide inputs to appropriate output drive circuits 128 that are connected to various copying functions and feeder instrumentation.

The operator control/ξ channel 110 includes a plurality of operator-operable switches (buttons), only some of which are shown. For example, the numeric keyboard 130 may contain the numeric characters "
It has 10 buttons for K from 0 to 9. "C"
Button 132 is used to cancel or clear various commands entered on panel 11o, and button 134 is used to select one side of the copy sheet as the first page to be copied on the front side of the copy sheet. Operated by the orator to specify the original. Start button 136
starts the operation of copy machine] 0, and presses the stop button 138.
stops the operation of the copying machine) O. Copier 10 and feeder 30 can be operated in either uncalibrated or collated modes. If uncoordinated mode is requested, press button 140; if collocated mode is requested;
Press button 142. Before copying in non-school mode, each original placed on platen 28 will be copied as many copies as requested by the operator. On the other hand, in the school building mode, each original in a set is copied once to provide a collated set of copies. This set of originals is then iteratively circulated until the required number of copies have been completed. Thus, in the uncalibrated mode, the output of the copier can be manually calibrated or This is a set of copies of the uncollated set that must be collated in the sorter, whereas when used in collated mode, a set of copies that have already been collated is provided.

The original is sent to the exposure platen 28.

It may have an image on both sides (double-sided) or it may have an image on one side (single-sided). Similarly, the copy produced by the copier IO may be an image of either one or both sides of the copy. In this way, if double-sided output is not required, the "NO" button 144 will be pressed. If double-sided output is required and a single-sided original is installed in feeder 30, the operator must press button 1.
Press 46 or the original on both sides is feeder 1.
30, press button 148. The copier JO can also operate in a cover insertion mode where special copy paper is provided from the source to the front or rear side of the copy.
is not required, the operator presses button 1'-NOJ.
You will have to press 150. Button 152.154゜1
56 each indicate to the copier 12 whether a cover is required at the front, rear, or front and back of the set of copies. Buttons 158 and 160 each
96 or the top output tray 94.

Other buttons not shown may also be provided on the ξ channel 110, such as adjusting the exposure of the copy to select reduction or enlargement of the original. The control panel 110 also displays messages to indicate to the operator in which mode the copier is operating, what action needs to be taken next, where in the copier the paper jam has occurred, etc. Includes a display 162.

In FIG. 3, a flow chart is shown illustrating the configuration mode of the apparatus of FIG. Flowcharts of the "Image Forming Mode" are shown in FIGS. 4 and 5. For the purposes of this application, a copying machine is used to print a double-sided copy set or section with the first page on the front side of the copy sheet. When the operator is in the mode of copying, it is called the sectioning mode. This sectioning mode includes a setup mode and a "column mode". In the setup mode, the operator can Operate the button.In this way, 1m
The display single-sided original/double-sided copy button 146 is pressed so that the single-sided original is copied to provide a set of double-sided copies. Button 142 is operated to indicate that feeder 30 should operate in school building mode. Side tray button 158 is operated for reasons discussed in more detail below. The operator also selects the appropriate button regarding the cover. At this time, the operator places a set of single-sided originals on the tray 32 of the feeder 30. The originals are arranged in page order, with the original with the highest number placed at the bottom of the original set.

Next, the operator should press button ``5'' on the numeric keyboard '130 three times and then press the second tongue ``tatami'' 134 (555'') to cause the copier JO to operate in a special sectioning mode. The display 162 then displays the message ``The copying machine is currently operating in chapter mode.'' The last command to be entered into the operator control/ξ channel 110 is the number of pieces required for each set, which is entered on the numeric keyboard 1301C.

The feeder 30 is now under manual control of the operator;
The original 34 can be serially cycled to the top of the set of originals by the start button 136. As the original 34 passes the detection device 60, a count signal is generated and stored in temporary memory 112. If the original file cycled to the top of the set is not from the first page of the chapter, and no decision is made to pause or exit configuration mode, and if the original is returned to its original starting order. If not, this routine
and then sent back to circulate another original.

If the original at the top of the original pile is the first page of a chapter or set of copies, the operator presses the "4+" button 134 to process it into memory 112 accordingly.
The number of original sheets to be printed is memorized.

Logic and control unit 62 counts the number of originals that have been circulated from the bottom of the set placed on tray 32.
This device calculates the number of originals in each chapter.

If the number of originals in a chapter is an even number, nothing happens. If the number of original sheets in one chapter is odd, the rear page of the last double-sided copy sheet in this chapter is treated as a blank page. This can be accomplished by an erase lamp 164 extending the full width of the bell 12 and placed between the exposure station 70 and the corona charger 72.

If it is desired to temporarily stop the setup mode, the stop button 138 is operated to stop the feeder for a short period of time. By pressing the start button 136, the
Chin then returns to rAJ and cycles another original. On the other hand, if it is desired to stop or cancel 12 the section setting procedure, the operator operates the cancel button 132 to shut off the feeder 30 and return the copier jO to its normal operating mode.

When the last original to be cycled is back in the original starting order, the setup mode is complete and the copier is ready to start the imaging mode (Figure 3). This is done by pressing start button 136. However, the copier can be programmed to start automatically after installation and after a predetermined period of time. In either case, the copier is started to make a double-sided copy from a single-sided original in feeder 30.

It may be useful at this point to describe the operation of copier 10 in a plain one-sided to two-sided mode. Let us assume that a set of 8 single-sided originals that require a cover are placed on the feeder tray 32.The operator operates the "Start" button 136 to cycle through the originals and determine whether the number of originals is odd or even. In this example, the number of original sheets is an even number.

Therefore, as the feeder 30 circulates relative to the exposure platen 28, only the original of the number of copies is exposed as the back side of the double-sided copy being formed. Odd-numbered originals are not exposed. Copy sheets are fed from a lower source 82 which receives even-numbered images and, after fusing, are fed back side down to a side output tray 96. After the feeder 30 has cycled all the originals back to the top tray 32K, operation of the copier 10 is stopped. The operator removes a copy from tray 96 and places it upside down and in reverse page order (ie, page 8, page 6, etc.) in lower source 82, back side up.

Next (, the operator presses the "Start" button 136, causing the feeder 30 to circulate the originals from the tray 32 a second time. However, during this cycling operation, only odd-numbered originals are exposed. , the first original containing page 8 will be circulated unexposed, but the next original containing page 7 will be exposed.The copy sheet containing page 8 on its back side will be circulated unexposed. , from tray 78 by feed rollers 80, and receives the image on the front side of original 7 from belt 12. The duplex copies are fed odd page (front) side up to output tray 94. The original with odd pages 5.3.1 is similarly circulated and reproduced on the front side of the copy sheet containing page 6.4.2 on its back side until fed to tray 94.

If the number of single-sided originals is odd, as determined by a pre-cycle count of originals in the feeder, one copy sheet is delivered from supply 82 to tray 96 prior to the first exposure cycle of originals. The back side of the copy paper is blank. Original "7" is now cycled through without being exposed, and the first original to be exposed is "6", which is copied onto the second sheet fed from source 82. The originals are rotated until all even numbers of originals have been copied. At this time, the operator removes the single-sided copy from tray 96, turns it over, and places it again, blank side up, in the lower supply source 82. During the second circulation of the original, the original corresponding to page "7" is fed to platen 28 (as it is exposed and received by the first copy sheet).

At this time, the odd-numbered originals are sequentially exposed, and the completed double-sided copies are fed to the tray 94 in page order.

It may be useful at this point to reiterate the description of the sectioned mode of operation of copier JO. In particular, in Fig. 4, the copying machine J
After O is started in imaging mode, feeder 3
0 cycles the sequential original twice through the exposure planar 728, first exposing the original forming the subsequent page and then the original forming the previous page. To further illustrate this mode of operation, nine single-sided originals are
32, and page 1.4.7 is designated by the orator as the first page of chapter 1.2.3. Therefore, the set of both sides of the copy paper has the following configuration. That is, originals 1 and 2 are on the front and rear side 1 of the first copy sheet (copied; original 3 is on side 2)
Original 4, the first page of a chapter, is copied on the front of the third copy paper; original 5 is copied on the back side. Copied.

Original 6 is copied on the front of the fourth copy paper and is blank on all sides; original 7 is copied on the front of this copy paper because the fifth copy paper is the first page of one chapter; 8 is the back side 1 (copied; the original 9 is the 6th copy 0 - imaged on the front side of the paper"t,
The back side is blank.

After the copier operates in the setup mode, the logic and control unit 62 stores therein the identification of all originals that appear on the back side. In this way, if the supplied original is the back side, the appropriate type of paper is determined, as shown in FIG.

Logic and control unit 62 determines whether the supplied original is the back of the first page of the chapter. Otherwise, copy paper is supplied from the lower source 82, which includes conventional copy paper such as white paper. but,
If the supplied original is the back of the first page of a chapter, copy paper is supplied from the upper source 78, which may include copy paper of the same color or a different color, such as yellow, for example. If the first page of the chapter is the same color as the other pages, copy paper can also be supplied from the lower source 82. Next, the LCU 62 determines whether there is an odd number of originals within the chapter. If there is an odd number of originals, a determination is made whether the supplied original is the last page of the chapter. If it is the last page, it is treated as a blank page on the copy paper from the lower source 82. If the number of originals in the chapter is even, the routine returns to determining whether the supplied original is the back of the first page of the chapter.

Similarly, if there is an odd number of originals in the chapter and the illuminated original is not the back of the first page of the chapter, the routine returns if side 1 (back page) is not completed.

Using the previous example where there are nine single-sided originals, including pages 1, 4, and 7 as the first page of the chapter, the site'l
After this is completed, tray 96 is stacked with a copy of original 2, a blank sheet, a copy of original 5, a blank sheet, a copy of original 8, and another blank sheet.

The operator removes the stack of sheets from tray 96, turns them over, and loads them into lower source 82 in preparation for side 2 copying. Side 2 (previous page) is placed on copy 0-sheet as shown in the flowchart of FIG. In this example, the original l, 3.4
．． 6.7 and 9 appear as previous pages.

When all previous pages have been copied, the chapter sectioning mode ends.

It is understood that the first page of a certain chapter is on a paper of a different weight than the other pages, on a sorted paper F, and so on.

EFFECTS The disclosed invention provides an efficient and relatively efficient way to make double-sided copies from a set of originals where the copies are divided into sets or chapters, with the first page of each set appearing on the front page of the double-sided copy. Provide low-level means. Such subsets are created by the normal operation of the copier once the operator has specified the original that appears as the first page. The first page can be produced on copy paper with special properties, if desired.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a copying machine according to the present invention. FIG. 2 is a block diagram of the logic and control unit and Ohalator control panel of the apparatus of FIG. FIG. 3 is a flow chart relating to the set mode of operation of the apparatus of FIG. FIG. 4 is a flow chart regarding the image forming mode of operation of the site 91. FIG. 5 is a flow chart regarding the image forming mode of operation of side 2. (Reference numerals) 30: Circulation means 69: Image forming means 78.80.82.84: Supply means 110 Means operable by means of a ribbon 62: Control means Patent applicant Eastman Kodak Kanno ξ knee Pray!

Claims (1)

Claims: In an apparatus for copying a set of single-sided originals to make a set of double-sided copies with sets in which the first page of each set is on the front side of the copy sheet, the set-up mode or imaging mode and designate each original as the first page of a subset of copies.A means operable by the operator receives a set of single-sided originals at a receiving position, from said receiving position to an exposure position, and then from said receiving position to an exposure position. means for controlling said circulation means at a set mode in order to circulate the originals one at a time from said receiving position and back thereto under the control of a circulation means orator for sequentially circulating individual originals; , means for identifying the position of each original in a set of single-sided originals as the originals are cycled; means for controlling said circulation means in an imaging mode to cycle the single-sided originals to said exposure position; Image forming means for forming an original image positioned at the exposure position; means for controlling the image forming means in the image forming mode to form the original image circulated to the exposure position. supply means for selectively supplying copy paper to receive an image from said image forming means, supplying copy paper to said image forming means such that a designated first page of each subset is received on the front side of the copy paper; A copying apparatus comprising means for controlling said supply means in said image forming mode so as to receive a single-sided original image on the front and back sides of said copy paper.