GB721560A - Improved method of reproducing texts from master sheets on copy sheets - Google Patents
Improved method of reproducing texts from master sheets on copy sheetsInfo
- Publication number
- GB721560A GB721560A GB1114252A GB1114252A GB721560A GB 721560 A GB721560 A GB 721560A GB 1114252 A GB1114252 A GB 1114252A GB 1114252 A GB1114252 A GB 1114252A GB 721560 A GB721560 A GB 721560A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- cams
- printing
- sheets
- sheet
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
- B41L11/00—Apparatus for directly duplicating from hectographic masters in mirror image, i.e. "wet duplicators" for producing positive copies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2700/00—Manifolding, printing or duplicating for office purposes
- B41P2700/10—Hectographic line duplicators
Landscapes
- Forming Counted Batches (AREA)
Abstract
721,560. Copying documents. RITZERFELD, W., and RITZERFELD, G. May 2, 1952, No. 11142/52. Class 100 (2). A rotary duplicator for printing text from a master sheet or sheets 2, 3 on a copy sheet, the text being arranged in columns extending in a direction parallel to the axis of a rotatable printing drum 12, is provided with clamp 13 on the drum 12, a cam-controlled impression roller 11 for performing two printing steps during each cycle of operation of the machine, and a device for holding a copy sheet during the interruption of the process between the two steps. Rollers 18, 19 feed copy sheets 20 past a moistening device 31 to the nip of the roller 11 and drum 12. The roller 11 is urged towards the drum 12 as long as a cam follower 22 is in engagement with cam K<SP>1</SP>, cams K<SP>1</SP> and K2, or cams K<SP>1</SP>, K<SP>2</SP> and K<SP>3</SP> mounted on a shaft 17 driven with the drum 12 through gears 14, 15, 16. The cam follower 22 controls the movement of the roller 11 through a lever 27 and toggle arrangement 28, 29, 30. The cams K<SP>2</SP> and K<SP>3</SP> are mounted for axial movement on the shaft 17 so that they may be successively brought into operative alignment with the cam follower 22 so as to define the number of columns to be printed in the first step of the printing operation (Fig. 1). After the roller 11 has been removed from the drum 12 the sheet 30 is held fast while the drum 12 continues to revolve by springs 23 controlled by an arm 24 and a cam 25 on the drum 12. While the printing is interrupted the sheet 20 is separated from the master sheets 2, 3 by a device 26. The second printing is controlled by cams S<SP>1</SP>, S<SP>2</SP> and S<SP>3</SP> co-operating with cam follower 22 and axially displaceable along the shaft 17 similarly to the cams K. The cams S are also jointly rotatably displaceable on the shaft 17 so that the second printing operation may begin at a column subsequent, if desired, to column 3 (Fig. 1). Columns, therefore, which are separated on the master sheets by at least one other column appear on the sheet 20 in immediate juxtaposition.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1114252A GB721560A (en) | 1952-05-02 | 1952-05-02 | Improved method of reproducing texts from master sheets on copy sheets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1114252A GB721560A (en) | 1952-05-02 | 1952-05-02 | Improved method of reproducing texts from master sheets on copy sheets |
Publications (1)
Publication Number | Publication Date |
---|---|
GB721560A true GB721560A (en) | 1955-01-05 |
Family
ID=9980804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1114252A Expired GB721560A (en) | 1952-05-02 | 1952-05-02 | Improved method of reproducing texts from master sheets on copy sheets |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB721560A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1105883B (en) * | 1956-01-21 | 1961-05-04 | Willem Martin | Rotary stencil printer for printing webs with a cutting device |
US4841858A (en) * | 1986-08-27 | 1989-06-27 | Bannister Ray L | Impression roller assembly including an ejector roller |
-
1952
- 1952-05-02 GB GB1114252A patent/GB721560A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1105883B (en) * | 1956-01-21 | 1961-05-04 | Willem Martin | Rotary stencil printer for printing webs with a cutting device |
US4841858A (en) * | 1986-08-27 | 1989-06-27 | Bannister Ray L | Impression roller assembly including an ejector roller |
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