CA1141421A - Photocopying machine - Google Patents
Photocopying machineInfo
- Publication number
- CA1141421A CA1141421A CA000328071A CA328071A CA1141421A CA 1141421 A CA1141421 A CA 1141421A CA 000328071 A CA000328071 A CA 000328071A CA 328071 A CA328071 A CA 328071A CA 1141421 A CA1141421 A CA 1141421A
- Authority
- CA
- Canada
- Prior art keywords
- tray
- image
- sheet feeding
- sheets
- transfer station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
- G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
- G03G15/232—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member
- G03G15/234—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
- Counters In Electrophotography And Two-Sided Copying (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
PHOTOCOPYING MACHINE
ABSTRACT
A duplexing copying machine is provided with an open operator-accessible buffer storage tray and appropriate sheet feeding means to feed paper through the machine. In duplexing mode, sheet feeding takes place from the buffer store instead of the paper supply store.
ABSTRACT
A duplexing copying machine is provided with an open operator-accessible buffer storage tray and appropriate sheet feeding means to feed paper through the machine. In duplexing mode, sheet feeding takes place from the buffer store instead of the paper supply store.
Description
The invention relates to photocopying machines arranged to copy onto both sides of copy material.
In forming images on both sides of a copy sheet in a photo-copying machine, it is usual to pass the sheet through the machine to obtain an image on one side and then store the sheet~ The stored sheet is later recycled through the photocopying machine to receive an image on its other side. In its simplest form in such a photocopying process the sheet is returned straight away, as soon as the next image is ready, to receive its second image on its other side.
An aspect of the inven~ion i~ as follows:
A copying machine for making duplex copies, comprising a photoreceptor surface, means for forming an image of information to be reproduced on said surface, a transfer station for transferring images on said surface to copy sheets and a copy sheet feeding system, said sheet feeding system comprising a sheet supply tray, an open operator-accessible buffer storage tray, sheet feeding means for feeding sheets from said sheet supply tray to the transfer station to receive an image on one side thereof, sheet feeding means for feeding the sheets with an image on one side from the transfer station to the buffer storage tray, and sheet feeding means for feeding sheets from said buffer tray to said transfer station to receive an image on the other side thereof forming duplex copies.
A photocopying machine having a sheet feeding system according to the invention will now be described by way of example with the reference to the accompanying drawing which shows the machine schematically.
The sheet feeding system includes a supply tray 10 which has a bottom feeder 11 for drawing copy sheets out of the tray 10 and feeding the sheets along an arcuate guide and into contact with a belt feeder 13. The feeder 13 feeds '' .
In forming images on both sides of a copy sheet in a photo-copying machine, it is usual to pass the sheet through the machine to obtain an image on one side and then store the sheet~ The stored sheet is later recycled through the photocopying machine to receive an image on its other side. In its simplest form in such a photocopying process the sheet is returned straight away, as soon as the next image is ready, to receive its second image on its other side.
An aspect of the inven~ion i~ as follows:
A copying machine for making duplex copies, comprising a photoreceptor surface, means for forming an image of information to be reproduced on said surface, a transfer station for transferring images on said surface to copy sheets and a copy sheet feeding system, said sheet feeding system comprising a sheet supply tray, an open operator-accessible buffer storage tray, sheet feeding means for feeding sheets from said sheet supply tray to the transfer station to receive an image on one side thereof, sheet feeding means for feeding the sheets with an image on one side from the transfer station to the buffer storage tray, and sheet feeding means for feeding sheets from said buffer tray to said transfer station to receive an image on the other side thereof forming duplex copies.
A photocopying machine having a sheet feeding system according to the invention will now be described by way of example with the reference to the accompanying drawing which shows the machine schematically.
The sheet feeding system includes a supply tray 10 which has a bottom feeder 11 for drawing copy sheets out of the tray 10 and feeding the sheets along an arcuate guide and into contact with a belt feeder 13. The feeder 13 feeds '' .
2:~
. .
: -la-sheets through an image transfer station 14 where an image is transferred from a photoreceptor 15 onto the copy sheet.
-. After the transfer station 14 the sheet is driven around a 180 arcuate guide 16 and then fed by belt feeders 17 and 18 into an open buffer storage tray l9. The tray l9 is .
.
' . :' ~ ' ! 2 provided with a bot-tom feeder 20 for feeding shee~ts from the tray 19 in-to ~ontact with the bel-t feeder 13.
:
The photocopying machine inc]udes a pla~en 21 on ~hich originals are placed for copying. An optional scanning system is provided for projecting an image of an original onto the photoreceptor 15. Developer station 22 and cleaning station 23 are provided on either side of the transfer station 14.
The optical system and -the developer -transfer and cleaning stations can be any con~entional type, all of which are well-~nown in the art of pho-to-copying machines.
~he photocopying machine can be used for simplex copying in conventional manner in which case the copy sheets are either fed out of the machine by extra means not shown or collec-ted in the tray 19 after passing once through the transfer station 14. In duplex mode~the operation of the machine is as follows:-Original documents are arranged in ascending (or decending) page order ofodd numbers, for example 1,3,5, etc~ and placed on the platen in tha-t order.
In the machine described, this is carried out manually by an operator.
However, if there is an automatic document handler provided, the pages are arranged to be fed,in the order men-tioned above,by the document handler.
Copy sheets arefed from the supply 11 in sequence and receives respec-tive images of the odd numbered sheets at the transfer station 14. The sheets are th~n each fed into the buffer tray 19.
. .
Original documents arrangea in ascending (or descending respectively) page order if even num~ers 2,4,6, etc. are then placed on, or supplied to~ the the pla-ten 21. Copying then takes place feedin~ shee-ts ~rom the buffer tray 19 past the transer station 14 and back into the tray 19. A-t the ` ~L4~Z~
end of -that sequence the -tray 19 has a complete and ordered duplex copy set of the original documents.
It will be noted if there is a total of or~ginals which is an odd nu~ber, the finished set in the tray 19 will be in order excep-t for ~le last pagre which will be a-t the bottom of tray 19. It is possible, if desired, to arrange for this last sheet -to pass around the shee-t feeding system without receiving an image so as to be in its correct position in the finished sa-t in the tray 19.
The arrangemen-t of the tray 19 as an open tray which is readily accessible to the operator makes it a simple mat-ter to cope with any malfunction during -the duplex copying of a set. For this reason, the tray is preferably positioned as shown next to or near the platen 21 where the operator can observe and supervise the machine if necessary. I-t will also be noted that the open access of the tray 19 means, as described, tha-t the tray 19 can ac-t as an output tray ~or simplex or duplex copying as well as a buffer tray.
. .
: -la-sheets through an image transfer station 14 where an image is transferred from a photoreceptor 15 onto the copy sheet.
-. After the transfer station 14 the sheet is driven around a 180 arcuate guide 16 and then fed by belt feeders 17 and 18 into an open buffer storage tray l9. The tray l9 is .
.
' . :' ~ ' ! 2 provided with a bot-tom feeder 20 for feeding shee~ts from the tray 19 in-to ~ontact with the bel-t feeder 13.
:
The photocopying machine inc]udes a pla~en 21 on ~hich originals are placed for copying. An optional scanning system is provided for projecting an image of an original onto the photoreceptor 15. Developer station 22 and cleaning station 23 are provided on either side of the transfer station 14.
The optical system and -the developer -transfer and cleaning stations can be any con~entional type, all of which are well-~nown in the art of pho-to-copying machines.
~he photocopying machine can be used for simplex copying in conventional manner in which case the copy sheets are either fed out of the machine by extra means not shown or collec-ted in the tray 19 after passing once through the transfer station 14. In duplex mode~the operation of the machine is as follows:-Original documents are arranged in ascending (or decending) page order ofodd numbers, for example 1,3,5, etc~ and placed on the platen in tha-t order.
In the machine described, this is carried out manually by an operator.
However, if there is an automatic document handler provided, the pages are arranged to be fed,in the order men-tioned above,by the document handler.
Copy sheets arefed from the supply 11 in sequence and receives respec-tive images of the odd numbered sheets at the transfer station 14. The sheets are th~n each fed into the buffer tray 19.
. .
Original documents arrangea in ascending (or descending respectively) page order if even num~ers 2,4,6, etc. are then placed on, or supplied to~ the the pla-ten 21. Copying then takes place feedin~ shee-ts ~rom the buffer tray 19 past the transer station 14 and back into the tray 19. A-t the ` ~L4~Z~
end of -that sequence the -tray 19 has a complete and ordered duplex copy set of the original documents.
It will be noted if there is a total of or~ginals which is an odd nu~ber, the finished set in the tray 19 will be in order excep-t for ~le last pagre which will be a-t the bottom of tray 19. It is possible, if desired, to arrange for this last sheet -to pass around the shee-t feeding system without receiving an image so as to be in its correct position in the finished sa-t in the tray 19.
The arrangemen-t of the tray 19 as an open tray which is readily accessible to the operator makes it a simple mat-ter to cope with any malfunction during -the duplex copying of a set. For this reason, the tray is preferably positioned as shown next to or near the platen 21 where the operator can observe and supervise the machine if necessary. I-t will also be noted that the open access of the tray 19 means, as described, tha-t the tray 19 can ac-t as an output tray ~or simplex or duplex copying as well as a buffer tray.
Claims (4)
1. A copying machine for making duplex copies, com-prising a photoreceptor surface, means for forming an image of information to be reproduced on said surface, a transfer station for transferring images on said surface to copy sheets and a copy sheet feeding system, said sheet feeding system comprising a sheet supply tray, an open operator-accessible buffer storage tray, sheet feeding means for feeding sheets from said sheet supply tray to the transfer station to receive an image on one side thereof, sheet feeding means for feeding the sheets with an image on one side from the transfer station to the buffer storage tray, and sheet feeding means for feeding sheets from said buffer tray to said transfer station to receive an image on the other side thereof forming duplex copies.
2. A photocopying machine according to claim 1, in which the buffer storage tray is adjacent a platen for supporting original documents to be copied.
3. A photocopying machine according to claim 1 or 2, in which there is provided for the buffer storage tray a bottom feeder.
4. A photocopying machine according to claim 1 or 2 in which the buffer tray also acts as an output tray for the duplex copies.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2323478A GB1598604A (en) | 1978-05-26 | 1978-05-26 | Photocopying machine |
| GB23234/78 | 1978-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1141421A true CA1141421A (en) | 1983-02-15 |
Family
ID=10192346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000328071A Expired CA1141421A (en) | 1978-05-26 | 1979-05-22 | Photocopying machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS55589A (en) |
| CA (1) | CA1141421A (en) |
| GB (1) | GB1598604A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56125761A (en) * | 1980-03-05 | 1981-10-02 | Toshiba Corp | Electrophotographic copier |
| US4778170A (en) * | 1982-11-22 | 1988-10-18 | Xerox Corporation | Copy sheet tray with adjustable back stop and scuffer mechanism |
| JPS60205548A (en) * | 1984-03-30 | 1985-10-17 | Fuji Xerox Co Ltd | Copying machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52137341A (en) * | 1976-05-13 | 1977-11-16 | Canon Inc | Copier for both faces of paper |
-
1978
- 1978-05-26 GB GB2323478A patent/GB1598604A/en not_active Expired
-
1979
- 1979-05-22 CA CA000328071A patent/CA1141421A/en not_active Expired
- 1979-05-23 JP JP6377379A patent/JPS55589A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55589A (en) | 1980-01-05 |
| GB1598604A (en) | 1981-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2048834A (en) | Method and apparatus for producing sets of collated copies | |
| GB1599774A (en) | Document feeding apparatus | |
| US4905054A (en) | Method and apparatus for producing corner-bound portrait and landscape document sets | |
| US5296908A (en) | Image processing machine with an automatic sheet handler | |
| US4462681A (en) | Apparatus for producing duplex copies from duplex originals | |
| US5085419A (en) | Paper feeder insert tray | |
| US4748470A (en) | Automatic duplex electrophotographic copying machine | |
| US4690392A (en) | Envelope configuration for use in a high speed copier with envelope printing capability | |
| CA1141421A (en) | Photocopying machine | |
| US6681085B1 (en) | Method and apparatus for printing a set of consecutive original pages on a number of receiving sheets to form a booklet | |
| US4241991A (en) | Photocopying machine | |
| JPS58212553A (en) | Sorter | |
| JPS6012859A (en) | Composite device of facsimile, copying machine and sorter | |
| JPH05116830A (en) | Paper sheet discharge tray for image forming apparatus | |
| JPS594563A (en) | Copying device | |
| JPH079158Y2 (en) | Copying device | |
| JP2672828B2 (en) | Copier | |
| JPH05310361A (en) | Duplicator | |
| JP2002193528A (en) | Recording sheet loading device and image forming device | |
| JPS5691249A (en) | Copying machine which permits one-side and both-side copying | |
| JPH0246946B2 (en) | ||
| JPS62121143A (en) | Bifacial copying method | |
| JPH0592847A (en) | Printing machine | |
| JPS5950066B2 (en) | double-sided copying device | |
| JPH11130315A (en) | Picture image formation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |