Patent EP0036295A2 successfully refreshed from Google Patents.
EP0036295A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Hand-held printing apparatus
Assignee: PRINTOS BV
•
Filing: 1981-03-12
•
Granted: —
•
Expires: 2001-03-12
Abstract
Abstract A hand-held ink jet printing apparatus (11) is shown which has a carriage (13) adapted to be held in the hand of the user. Wheels (31) on the carriage (13) allowthe carriage (13) to be moved over a surface to be printed. A plurality of nozzles (37) located in a common nozzle block (39) mounted on the carriage (13) are connected to a plurality of electrically operated solenoid valves (65) which supply ink to the nozzles (37). A microcomputer (17) remote from the carriage (13) controls the operation of the electrically operated solenoid valves (65). An encoder disk assembly (109) mounted on the carriage (13) and driven by the wheels (31) supplies electrical signals to the microcomputer (17) indicative of the rate at which the carriage (13) is moved overthe surface to be printed.
Inventors
- 👤 Grant Paterson Cross
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 20:13
CPC Classifications
B; B41; B41J; B41J3/00; B41J3/28; B41J2/00; B41J2/005; B41J2/01; B41J2/015; B41J2/04; B41J3/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
89 words
A hand-held ink jet printing apparatus, comprising: a carriage adapted to be held in the hand; roller means on said carriage for moving said carriage over a surface to be printed; ink jet printing means mounted on said carriage; electrical control means remote from said carriage for controlling the operation of said ink jet printing means; and signal generating means mounted on said carriage for supplying to said electrical control means electrical signals indicative of the rate at which said carriage is moved over said surface to be printed.
Claim 2
Dependent Claim
89 words
A hand-held ink jet printing apparatus, comprising: a carriage adapted to be held in the hand; roller means on said carriage for moving said carriage over a surface to be printed; ink jet printing means mounted on said carriage; electrical control means remote from said carriage for controlling the operation of said ink jet printing means; and signal generating means mounted on said carriage for supplying to said electrical control means electrical signals indicative of the rate at which said carriage is moved over said surface to be printed.
Claim 3
Dependent Claim
41 words
A hand-held ink jet printing apparatus according to claim 1, wherein said ink jet printing means comprises a plurality of nozzles mounted on said carriage and electrically operated valve means associated with each nozzle for controlling the supply of ink thereto.
Claim 4
Dependent Claim
46 words
A hand-held ink jet printing apparatus according to claim 2, wherein said plurality of nozzles are located in a common nozzle block mounted on said carriage and said valve means comprise electrically operated solenoid valves associated with each nozzle for controlling the supply of ink thereto.
Claim 5
Dependent Claim
49 words
The hand-held ink jet printing apparatus of claim 2 or 3, wherein said nozzles are arranged in a single row in alignment with and at equally spaced intervals from one another, said row extending laterally of the direction of movement of said carriage over said surface to be printed.
Claim 6
Dependent Claim
30 words
The hand-held ink jet printing apparatus of claim 2, 3 or 4, wherein said nozzles are jeweled orifice nozzles having orifices in the range of 0.025mm to 0.215mm in diameter.
Claim 7
Dependent Claim
23 words
The hand-held ink jet printing apparatus of claim 5, wherein said nozzle orifices are in the range of 0.145mm to 0.185mm in diameter.
Claim 8
Dependent Claim
33 words
The hand-held ink jet printing apparatus of claim '5 or 6, wherein the distance between the centre of each orifice when said orifices are aligned is in the range of 0.05mm to 0.50mm.
Claim 9
Dependent Claim
32 words
The hand-held ink jet printing apparatus of claim 5, 6 or 7, wherein the electrical cycle time of said electrically operated solenoid valves is in the range of 1.0 to 4.5 milliseconds.
Claim 10
Dependent Claim
72 words
A hand-held ink jet printing apparatus according to any one of the preceding claims 2 to 8, comprising a microcomputer remote from said carriage for controlling the operation of said electrically operated valve means and an encoder disk assembly mounted on said carriage and associated with said roller means for supplying to said microcomputer electrical signals indicative of the rate at which said carriage is moved over said surface to be printed.
Claim 11
Dependent Claim
38 words
The hand-held ink jet printing apparatus of claim 9, wherein said encoder disk assembly comprises an encoder disk and photo detector subassembly, said encoder disk being mounted on a drive shaft which is driven by said roller means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.