US3836918A - Optical image rotating device - Google Patents
Optical image rotating device Download PDFInfo
- Publication number
- US3836918A US3836918A US00425955A US42595573A US3836918A US 3836918 A US3836918 A US 3836918A US 00425955 A US00425955 A US 00425955A US 42595573 A US42595573 A US 42595573A US 3836918 A US3836918 A US 3836918A
- Authority
- US
- United States
- Prior art keywords
- image
- sheet material
- lens
- angle
- characters
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
- B41B21/00—Common details of photographic composing machines of the kinds covered in groups B41B17/00 and B41B19/00
- B41B21/16—Optical systems
Definitions
- ABSTRACT In the environment of a photocomposition machine normally projecting images across a column, with the lines leaded after each line is composed, this modification provides an image rotation to permit larger letters in longer text than could be obtained in the normal column width.
- the image rotation is distortion-free by reason of a set of two roof mirrors in an angular relationship to provide the exact desired degree of rotation, which is normally 90.
- An enlarging lens, or curved mirror surface, is used to produce enlargment.
- the controller of the photocomposing machine selects a particular character.
- the character isin alignmentwith the lens system 1 the light is flashed to project the character.
- the projection of the character is controlled to step along a line laterally ofthe photosensitive sheet character by characterto compose words and spaces.
- the web, or sheet is later developed photographically and cut. and pasted into composition for camera-ready lithographic masters.
- a conventional photocomposing machine is convertible at the operator'sdiscretion from a limited line lens composerintext form to anunlimited length single-line composition device, limited only bythe length of photosensitive sheet,materialcapacity of the machine magazme.
- V1 is a schematic illustration of theprinciples involved in a conventional photocomposing machine with the image rotation device inserted in the optical 7 system according to this invention.
- FIG. 2 is a top plan view ofthe image rotating device in the prepared embodiment ofthe invention.
- FIG. 3 is a front elevation of the image rotating device showing the angular rotation of the two sets of roof mirrors of the device.
- FIG. 4 is a front view of one roof mirror.
- FIG. 5 is a top view of a single roof mirror
- FIG. 6 is a section taken along line 6-6 of FIG. 5.
- a disc 10 carries a circular path of font characters. In FIG. I only one character is illustrated because such photocomposition discs are old and well-known.
- the only commercially available disc 10 is a photographic transparency but it is feasible to provide a font ofimage generating source form on an opaque carrier and then to project light energy in a pattern from the form in light and shadow representing an image printed on the face of that form. This is the opaque projector principle.
- a schematic representation of a control means is indicated by the reference characters 12A and .128 shown connected to the font disc 10 and to a magazine take-up spool l4.
- the control system represented by 12A and '12B will include the computer, the program of the computer, drive motors and other associated apparatus known to the photocomposing art.
- a font of image generating source form is employed, with means to select one image source form of the font, and'to move the image source form into a projection station and then project light energy in a pattern from the form in light and shadow representing the image.
- a light source 16 is illustrated in position to illuminate the alphabet letter A in-FlG. lfrom the transparency l0.
- Alens 18 is a schematic representation of a lens system having an optical axis aligned with the projection station and focused to produce an image. The image may be visually detected by placing a screen at the point of focus.
- the lens system includes the normally controlled focusing devices which will being the image into proper focus.
- the space between the lens 18 and the point of focus may be referred to as the image space of the optical system.
- a magazine 20 is a source of photosensitive sheet material.
- the take-up means 14 and the magazine 20 work together to direct photosensitive sheet material 22 in a planar path therebetween, and present such sheet material to the lens image.
- the control systems 12A and 12B provide means to step the material along from magazine to take-up in leader steps of operator selected size.
- the controls 12A and 12B operate the lens optical system and the magazine for projecting selected images in a proportional spacing along the horizontal row of the sheet material for a selected number of characters and thereafter operate the stepping of the sheet material in a leader step.
- a row of text material is composed in the normal form usually associated with newspaper and magazine reading.
- this invention provides for insertion of an image rotating means referred to generally by the reference character in FIG. 1.
- the image rotating device 25 is insertable in the image space of the optical system on the axis of the system for rotation of the image away from a vertical position.
- the intent generally will be to rotate the image a full 90 as illustrated in FIG. 1 whereby the control means may then be set to project one only as the selected number of characters in a row and then step the magazine to produce a single column of characters projected in a path aligned with the sheet material movement path.
- the use of the image rotating device 25 is preferably operator controlled in order that the machine may be used in conventional text composition or in headline producing mode at will in order to make the machine available for the extended usage described.
- the preferred image rotating means is a set of two roof mirrors as shown in the balance of the drawings from FIG. 2 through FIG. 6. lt is to be understood that although a description of a roof mirror set is used, the embodiment includes and embodies the principle of prism members instead of roof mirrors. Those skilled in optics art will be aware of the similarity of uses, and recognize the preference for mirrors rather than prisms.
- a roof mirror module 29 consists of a frame 30 which holds and presents a pair of mirrors 31 and 32 in a 90 relationship.
- FIG. 3 two such roofmirror modules 29 and 33 are shown mounted upon a holding bracket 35.
- the completed roof mirror modules 29 and 33 are arranged on the bracket 35 such that the axis planes of each ofthe roof mirrors are made to form an angle with each other.
- the axis plane of a roof mirror is that plane which is mutually perpendicular to each of the plane mirrors which comprise the roof.
- FIG. 1 illustrates the system'as using lens 18.
- the focal length of lens 18 must be matched to the longer optical path by reason of the folding of the path through the rotation modules. When the rotation feature is not in use, a shorter focal length lens is substituted for lens 18.
- the image rotator which consists of four flat mirrors does not contribute to enlargement of the image. It only rotates the image.
- the enlargement is a function of the lens in use.
- a font of image generating source forms means to select oneimage source form of said font, move the image source form into a projection station, and then project light energy in a pattern from said form in light and shadow representing said image;
- a lens optical system having an optical axis aligned with said projection station, said system focused to produce an image
- a magazine for photosensitive sheet material a takeup means, a guide to direct said sheet material in a planar path therebetween, said guide presenting sheet material to said lens image, and means to step such sheet material along from magazine to takeup in leader steps;
- control means operating said lens optical system and magazine for projecting selected images in proportional spacing along a horizontal row of said sheet material for a selected number of characters and thereafter operating the means which steps the sheet material in a leader step;
- the improvement in image projection control comprising:
- control means may be set to project one only as said selected number of characters in a row and produce a single column of characters projected in a path aligned with such sheet material movement path, with said characters readable along a direction at an angle to the normal horizontal row.
- each roof mirror module arranged such that the axis planes of the modules intersect at an angle, and the image rotation resultant is twice that angle.
- image rotating means comprises two sets of roof mirror modules, at least one cute a focusing and size changing function.
- the image rotating means comprises two sets of roof mirror modules, each roof mirror module arranged such that the axis planes of the modules intersect at an angle, and the image rotation 5 including a convex mirror for focusing and size chang-
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- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
Description
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00425955A US3836918A (en) | 1973-12-19 | 1973-12-19 | Optical image rotating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00425955A US3836918A (en) | 1973-12-19 | 1973-12-19 | Optical image rotating device |
Publications (1)
Publication Number | Publication Date |
---|---|
US3836918A true US3836918A (en) | 1974-09-17 |
Family
ID=23688718
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00425955A Expired - Lifetime US3836918A (en) | 1973-12-19 | 1973-12-19 | Optical image rotating device |
Country Status (1)
Country | Link |
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US (1) | US3836918A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4162846A (en) * | 1974-10-01 | 1979-07-31 | Moyroud Louis M | Photographic type composing machine and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB706690A (en) * | 1950-07-06 | 1954-04-07 | Rene Alphonse Eugene Higonnet | Improvements in photographic type-composing machines |
US3323414A (en) * | 1963-06-06 | 1967-06-06 | Ritchie David Scarth | Apparatus for automatically copying lines |
-
1973
- 1973-12-19 US US00425955A patent/US3836918A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB706690A (en) * | 1950-07-06 | 1954-04-07 | Rene Alphonse Eugene Higonnet | Improvements in photographic type-composing machines |
US3323414A (en) * | 1963-06-06 | 1967-06-06 | Ritchie David Scarth | Apparatus for automatically copying lines |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4162846A (en) * | 1974-10-01 | 1979-07-31 | Moyroud Louis M | Photographic type composing machine and method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: PACIFICORP CREDIT, INC., 111 S.W. FIFTH AVENUE, SU Free format text: SECURITY INTEREST;ASSIGNOR:TEGRA, INC.;REEL/FRAME:004950/0106 Effective date: 19880727 |
|
AS | Assignment |
Owner name: VARITYPER, INC., 11 MT. PLEASANT AVE., EAST HANOVE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AM INTERNATIONAL, INC;REEL/FRAME:005060/0043 Effective date: 19880727 |
|
AS | Assignment |
Owner name: PACIFIC HARBOR CAPITAL, INC., A CORP. OF OR Free format text: SECURITY INTEREST;ASSIGNOR:PACIFICORP CREDIT, INC., A CORP. OF OR;REEL/FRAME:005401/0153 Effective date: 19900312 |
|
AS | Assignment |
Owner name: PREPRESS SOLUTIONS, INC., A CORP. OF DE, MASSACHUS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PACIFIC HARBOR CAPITAL, INC.;REEL/FRAME:006937/0009 Effective date: 19940412 |