US4544289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Print disk positioning system
Assignee: Varitronic Systems Inc
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Filing: 1984-01-20
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Granted: 1985-10-01
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Expires: 2004-01-20
Abstract
Abstract A print disk positioning system is disclosed herein which provides rotational and lateral movement of a print disk (20) having raised or depressed characters thereon with the objective of locating the appropriate character within the jaws of a printing station (22). The positioner includes a fixed rail (44) which is driven by the rotation of a motor (38) having a pinion gear (42) which drives a rack gear (82) connected to a rack arm (80) which in turn slides a second motor (54) mounted on bearings (56) on rail (44). Motor (54) provides the rotational movement to the disk and motor (38) provides the lateral movement. Each motor is controlled electrically to cause an appropriate sequence of movements to bring the disk into proper alignment in the printing station at the appropriate time.
Inventors
- 👤 Thomas K. McGourty
- 👤 Lawrence F. McGourty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:05
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/38; B41J1/00; B41J1/22; B41J1/24; B41J1/28
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
A print disk positioner for use in an impact printer employing a disk having characters thereon to be printed comprising: (a) a planar rail member having first and second ends and a slot therethrough extending a predetermined distance between the ends, (b) a first electric stepping motor attached to said rail toward one end thereof and having a shaft with a pinion gear extending out of said motor, (c) a second electric stepping motor having a plurality of bearings attached thereto and in slideable engagement with said rail, said second motor having a second shaft extending therefrom through said slot to the other side of said rail to receive the print disk, (d) a connecting arm with rack teeth affixed to said second motor at one end and engaging said pinion gear for moving said second motor up and down said rail in response to rotation of said first shaft; and (e) means biasing said rack into engagement with said pinion gear.
Claim 2
Dependent Claim
162 words
A print disk positioner for use in an impact printer employing a disk having characters thereon to be printed comprising: (a) a planar rail member having first and second ends and a slot therethrough extending a predetermined distance between the ends, (b) a first electric stepping motor attached to said rail toward one end thereof and having a shaft with a pinion gear extending out of said motor, (c) a second electric stepping motor having a plurality of bearings attached thereto and in slideable engagement with said rail, said second motor having a second shaft extending therefrom through said slot to the other side of said rail to receive the print disk, (d) a connecting arm with rack teeth affixed to said second motor at one end and engaging said pinion gear for moving said second motor up and down said rail in response to rotation of said first shaft; and (e) means biasing said rack into engagement with said pinion gear.
Claim 3
Dependent Claim
25 words
A positioner according to claim 1 wherein said biasing means includes a curved band of resilient material affixed at its ends to said first motor.
Claim 4
Dependent Claim
50 words
A positioner according to claim 1 wherein said rail has two parallel longitudinal edges between recess therein extending a predetermined distance between the ends, and wherein said bearings include a lip located and sized to be received within said recess, so that said motor is rigidly attached to said rail.
Claim 5
Dependent Claim
44 words
A print disk positioner according to claim 1 including sensor means located on said rail and adjacent said second shaft for detecting coded information on the print disk, so that the type style and point size of characters on the disk can be determined.
Claim 6
Dependent Claim
23 words
A print disk according to claim 1 wherein said rail is mounted on a support which locates the rail in an inclined plane.
Claim 7
Dependent Claim
54 words
A positioner according to claim 4 including a second sensor operatively connected to planar rail and a flange member operatively connected to said second stepping motor, said sensor and flange being located such that said sensor can detect the position of said second motor when the disk is fully withdrawn from the impact printer.
Claim 8
Dependent Claim
35 words
A print disk for use in an impact printing machine comprising at least 3 concentric bands of spaced raised characters, the height of each character being adjusted to proportionally adjust the impact pressure applied thereon.
Claim 9
Dependent Claim
35 words
A print disk for use in an impact printing machine comprising at least 3 concentric bands of spaced raised characters, the height of each character being adjusted to proportionally adjust the impact pressure applied thereon.
Claim 10
Dependent Claim
28 words
A print disk in accordance with claim 7 wherein the characters are arranged such that the most frequently used characters surround a predetermined "home" position on the disk.
References Cited (Backward Citations)
US752792A
Cited
US3447656A
Cited
DE1561261A1
Cited
US3493091A
Cited
US3794150A
Cited
US3960072A
Cited
US4099106A
Cited
DE2716067A1
Cited
US4074798A
Cited
US4215943A
Cited
US4335940A
Cited
US4335941A
Cited
US4281938A
Cited
EP0033226A2
Cited
US4346445A
Cited
WO1982001513A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-30 | 1989-04-01 | 1989-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-30 | 1993-04-01 | 1993-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-30 | 1997-04-01 | 1997-10-01 | $7700.00 | Window Closed / Lapsed |