US3623805A - Drive mechanism for imaging apparatus - Google Patents
Drive mechanism for imaging apparatus Download PDFInfo
- Publication number
- US3623805A US3623805A US876636A US3623805DA US3623805A US 3623805 A US3623805 A US 3623805A US 876636 A US876636 A US 876636A US 3623805D A US3623805D A US 3623805DA US 3623805 A US3623805 A US 3623805A
- Authority
- US
- United States
- Prior art keywords
- roller
- plate member
- drive means
- contact
- auxiliary
- 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 - Lifetime
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 238000003384 imaging method Methods 0.000 title abstract description 6
- 230000008878 coupling Effects 0.000 claims 5
- 238000010168 coupling process Methods 0.000 claims 5
- 238000005859 coupling reaction Methods 0.000 claims 5
- 239000012530 fluid Substances 0.000 claims 4
- 239000007921 spray Substances 0.000 claims 3
- 238000013459 approach Methods 0.000 claims 2
- 230000005684 electric field Effects 0.000 claims 2
- 230000005670 electromagnetic radiation Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 2
- 241001330988 Palmyra Species 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G17/00—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
- G03G17/04—Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process using photoelectrophoresis
-
- 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
- G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
Definitions
- Shanahan ABSTRACT An electrical-mechanical drive mechanism is employed in a photoelectrophoretic imaging system to propel a flat plate electrode on which images are formed along a generally linear path and to rotate roller electrodes that conrollers and the translational speed of the flat plate are synchronized to minimize disturbing an image on the flat plate electrode.
- Separate drive mechanisms rotate the rollers prior to the arrival of the flat plate adjacent a roller to overcome inertia of the roller and to perform operations secondary to the imaging process.
- SHEET lOUF 29 PATENTED unvso l97
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
An electrical-mechanical drive mechanism is employed in a photoelectrophoretic imaging system to propel a flat plate electrode on which images are formed along a generally linear path and to rotate roller electrodes that contact the flat plate during its travel. The angular speed of the rollers and the translational speed of the flat plate are synchronized to minimize disturbing an image on the flat plate electrode. Separate drive mechanisms rotate the rollers prior to the arrival of the flat plate adjacent a roller to overcome inertia of the roller and to perform operations secondary to the imaging process.
Description
United States Patent [72] Inventors Raymond K. Egnaczak Williamson; Charles H. Myers, Palmyra, both of NY.
21 1 Appl. N0. 876,636
[22] Filed Nov. 14, 1969 [45] Patented Nov. 30, 1971 [73] Assignee Xerox Corporation Rochester, N.Y.
[ 54] DRIVE MECHANISM FOR IMAGING APPARATUS 16 Claims, 34 Drawing Figs.
[52 us. Cl 355/3,
232, 233. 234, 235; 355/3, 84 [56] References Cited UNITED STATES PATENTS 2,854,920 10/1958 Frankle et a1 1/1969 Grobman et a1.
3,422,757 101/232 3,427,242 2/1969 Mihajlov 355/3 UX 3,486,819 12/1969 Di Giulio 355/8 X 3,397,628 8/1968 Granzow et a1 355/8 Primary Examiner-Samuel 8. Matthews Assistant E.\'aminer Kenneth C. Hutchison Allorneys.lames J. Ralabate, David C Petre and Michael H.
Shanahan ABSTRACT: An electrical-mechanical drive mechanism is employed in a photoelectrophoretic imaging system to propel a flat plate electrode on which images are formed along a generally linear path and to rotate roller electrodes that conrollers and the translational speed of the flat plate are synchronized to minimize disturbing an image on the flat plate electrode. Separate drive mechanisms rotate the rollers prior to the arrival of the flat plate adjacent a roller to overcome inertia of the roller and to perform operations secondary to the imaging process.
SHEET 01 or 29 RAYMOgD I Z AK CHAR H. S
BY 2 ATTORNEY PATENTEI] Nova 0m SHEEI DEUF 29 PATENTED NUV30I97I 3,623 805 sum 03 OF 29 PATENIED unvao lsn SHEET on HF 29 PATENTED nuvao I971 SHEET OBUF 29 PATENTEU uuvso l97| SHEET CBUF 29 PATENTEDNHYBOIHFI 3,623,805
SHEET DSUF 29 PATENTED uavso :97:
SHEET lOUF 29 PATENTED unvso l97| SHEET llUF 29 PATENIED unvao 12m SHEET 120F29 PATENIED unvso l97l SHEET NM 29 lo Eb? L 3% SEE PATENIED unvao l9?! SHEET lSUF 29
Claims (16)
1. A drive mechanism comprising main drive means for propelling a plate member back and forth along a generally linear path past a first roller with which it makes contact, first auxiliary drive means for rotating the first roller, and clutch means for alternately coupling the first roller to the main and auxiliary drive means to have the first roller rotated by the main drive means when the plate member and first roller are in contact at an angular velocity directly related to the linear velocity of the plate and to have the first roller rotated by the auxiliary drive means when the plate and first roller are not in contact.
2. The mechanism of claim 1 wherein said auxiliary drive means includes means to rotate said first roller at an angular velocity substantially the same as the velocity produced by said main drive means to minimize the load exerted on the main drive means when the clutch means couples the first roller to the main drive means.
3. The mechanism of claim 1 further including a second roller positioned adjacent the first roller and making contact with the plate member as it travels thereby, and second auxiliary drive means for rotating said second roller and wherein said clutch means includes means for alternately coupling said second roller to said second auxiliary and main drive means to have the second roller rotated by the main drive means when the second roller and plate member are in contact at an angular velocity directly related to the linear velocity of the plate member and to have the second roller rotated by the second auxiliary drive means when the second roller and plate member are not in contact.
4. The apparatus of claim 1 wherein said main drive means includes a first continuous belt member rotated clockwise and counterclockwise by a first motor coupled thereto and having means for reversing its direction of rotation.
5. The apparatus of claim 4 wherein said first auxiliary drive means includes a second continuous belt member rotated clockwise and counterclockwise by a second motor coupled thereto and having means for reversing its direction of rotation.
6. The apparatus of claim 5 wherein said clutch means includes main clutch means for coupling said first continuous belt member to said first roller and auxiliary clutch means for coupling said second continuous belt member to said first roller.
7. The apparatus of claim 6 further including switch means actuated as said plate member travels thereby to engage said main clutch means when the plate and first roller are in contact and to engage said auxiliary clutch means when the plate and said first roller are not in contact.
8. The mechanism of claim 1 wherein said clutch means includes solenoid-operated main clutch means coupled to the main drive means and the first roller for transmitting power thereto when a first solenoid is energized, solenoid-operated auxiliary clutch means coupled to the auxiliary drive means and the first roller for transmitting power thereto when a second solenoid is energized, first cam-operated switch means to prevent the simultaneous application of power to the first roller member by the main and auxiliary drive means having a first switch position to energize said first solenoid when the plate member contacts the first roller and a second switch position to energize said second solenoid when the plate Member is not in contact with the roller member.
9. The mechanism of claim 1 further including inking means to apply a fluid to the surface of said roller as it is rotated by the auxiliary drive means to coat the surface of the roller with said fluid before the plate member contacts the first roller.
10. The mechanism of claim 9 wherein said fluid is a photoelectrophoretic ink and further including means for coupling the plate member and first roller to a voltage source to establish an electric field across ink between the plate member and roller and exposure means for exposing the ink between the plate member and roller to electromagnetic radiation to form an image on the plate member from ink subjected to electric field and exposed to radiation.
11. The mechanism of claim 10 wherein said first roller is rotated by said main drive means at an angular velocity such that a point on the periphery of the roller has substantially the same velocity as a point on the platen.
12. The mechanism of claim 9 further including elevator means for moving the first roller generally perpendicular to the path of said plate member when activated, to enable the first roller to contact the plate member as it travels thereby.
13. The mechanism of claim 12 further including second cam-operated switch means thrown to a first position as the plate member approaches the first roller to activate said elevator means and thrown to a second switch position as the plate member clears the first roller to deactivate said elevator means.
14. The mechanism of claim 1 further including first and second spray means for spraying a fluid onto the surface of said first roller, when activated, at least when it is in contact with the plate member, and third cam-operated switch means thrown to a first switch position to activate said first spray means as the plate member passes the first roller from right to left and thrown to a second switch position to activate the second spray means as the plate member passes the first roller from left to right.
15. The mechanism of claim 1 further including a second roller coupled to said main drive means by an auxiliary clutch means and positioned to compress a web against the plate member as it travels thereby causing the web to be advanced with said plate member, and web feed means for dispensing said web from a spool when the web is advanced with said plate member.
16. The mechanism of claim 15 further including elevator means for moving said second roller generally perpendicular to the path of said plate member, when activated, to compress the web against the plate member as it travels thereby, and fourth cam-operated switch means to activate said elevator means as said plate member approaches the second roller.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US87663669A | 1969-11-14 | 1969-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3623805A true US3623805A (en) | 1971-11-30 |
Family
ID=25368226
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US876636A Expired - Lifetime US3623805A (en) | 1969-11-14 | 1969-11-14 | Drive mechanism for imaging apparatus |
Country Status (1)
Country | Link |
---|---|
US (1) | US3623805A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2449910A1 (en) * | 1979-02-22 | 1980-09-19 | Matsushita Electric Ind Co Ltd | ELECTROPHOTOGRAPHIC REPRODUCING DEVICE |
US4688481A (en) * | 1986-05-05 | 1987-08-25 | Technitrol, Inc. | Document feeding and printing apparatus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2854920A (en) * | 1954-11-12 | 1958-10-07 | Harry R Frankle | Machine for printing mailing pieces from duplicating cards |
US3397628A (en) * | 1965-07-28 | 1968-08-20 | Addressograph Multigraph | Graphic recorder |
US3422757A (en) * | 1965-10-18 | 1969-01-21 | Harris Intertype Corp | Sheet feeding apparatus |
US3427242A (en) * | 1966-04-18 | 1969-02-11 | Xerox Corp | Apparatus for continuous photoelectrophoretic imaging |
US3486819A (en) * | 1966-10-07 | 1969-12-30 | Addressograph Multigraph | Manual control for copying machine |
-
1969
- 1969-11-14 US US876636A patent/US3623805A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2854920A (en) * | 1954-11-12 | 1958-10-07 | Harry R Frankle | Machine for printing mailing pieces from duplicating cards |
US3397628A (en) * | 1965-07-28 | 1968-08-20 | Addressograph Multigraph | Graphic recorder |
US3422757A (en) * | 1965-10-18 | 1969-01-21 | Harris Intertype Corp | Sheet feeding apparatus |
US3427242A (en) * | 1966-04-18 | 1969-02-11 | Xerox Corp | Apparatus for continuous photoelectrophoretic imaging |
US3486819A (en) * | 1966-10-07 | 1969-12-30 | Addressograph Multigraph | Manual control for copying machine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2449910A1 (en) * | 1979-02-22 | 1980-09-19 | Matsushita Electric Ind Co Ltd | ELECTROPHOTOGRAPHIC REPRODUCING DEVICE |
US4688481A (en) * | 1986-05-05 | 1987-08-25 | Technitrol, Inc. | Document feeding and printing apparatus |
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