UST878014I4 - Dttijt tp a ttaxt - Google Patents
Dttijt tp a ttaxt Download PDFInfo
- Publication number
- UST878014I4 UST878014I4 US878014DH UST878014I4 US T878014 I4 UST878014 I4 US T878014I4 US 878014D H US878014D H US 878014DH US T878014 I4 UST878014 I4 US T878014I4
- Authority
- US
- United States
- Prior art keywords
- ttaxt
- dttijt
- electrode
- photoconductive surface
- receiver
- 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.)
- Pending
Links
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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
- G03G15/05—Apparatus for electrographic processes using a charge pattern for imagewise charging, e.g. photoconductive control screen, optically activated charging means
Definitions
- Proper spacing between the photoconductive surface of the receiver and a conductive surface of an electrode is obtained in one embodiment by providing a photoresist insulative dot pattern on the electrode so that air ionization will take place in the spaces surrounding the photoresist dot pattern during application of a potential between the electrode and a conductive backing on the receiver. Simultaneous or subsequent imagewise exposure will result in an electrostatic image which can be toned to form a half-tone image.
- the photoconductive surface is made with irregularities which give it a roughness that provides proper spacing for ionization of air between the electrode and the remainder of photoconductive surface. Exposure of the photoconductor may be made through the electrode, which may be transparent, either concurrently with or subsequent to the charging step.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photoreceptors In Electrophotography (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
Description
DEFENSIVE PU LiEATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally flied. The files of these applications are available to the public for inspection and reproduction may be purchased tor 80 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED SEPTEMBER 29, 1970 T878,014 IMAGE FORMING METHODS AND MEANS George K. Czarnikow, 901 Elmgrove Road, Rochester, N.Y. 14650 Filed Mar. 7, 1969, Ser. No. 805,173 int. Cl. G03g 13/02 US. Cl. 355-17 1 Sheet Drawing. 4 Pages Specification Apparatus and methods are provided for induction charging of a receiver having a photoconductive surface. Proper spacing between the photoconductive surface of the receiver and a conductive surface of an electrode is obtained in one embodiment by providing a photoresist insulative dot pattern on the electrode so that air ionization will take place in the spaces surrounding the photoresist dot pattern during application of a potential between the electrode and a conductive backing on the receiver. Simultaneous or subsequent imagewise exposure will result in an electrostatic image which can be toned to form a half-tone image. In another embodiment the photoconductive surface is made with irregularities which give it a roughness that provides proper spacing for ionization of air between the electrode and the remainder of photoconductive surface. Exposure of the photoconductor may be made through the electrode, which may be transparent, either concurrently with or subsequent to the charging step.
Sam. 29, 397 T78,0M
G. K. CZARNIKOW IMAGE FORMING METHODS AND MEANS y Filed March 7, 1969 'FEGJ I GE PEG-2 m f 44am ATTORNEYS
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80517369A | 1969-03-07 | 1969-03-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| UST878014I4 true UST878014I4 (en) | 1970-09-29 |
Family
ID=25190846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US878014D Pending UST878014I4 (en) | 1969-03-07 | 1969-03-07 | Dttijt tp a ttaxt |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | UST878014I4 (en) |
| FR (1) | FR2024751A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331753A (en) * | 1978-11-27 | 1982-05-25 | Minnesota Mining And Manufacturing Company | Method for providing an electrical charge pattern on the insulative layer of an insulative layer-photoconductive layer-conductive layer structure |
-
1969
- 1969-03-07 US US878014D patent/UST878014I4/en active Pending
-
1970
- 1970-03-06 FR FR7008118A patent/FR2024751A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2024751A1 (en) | 1970-09-04 |
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