EP0875379A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Multiple cartridge printhead assembly for use in inkjet printing system
Assignee: HP Inc
•
Filing: 1998-04-02
•
Granted: —
•
Expires: 2018-04-02
Abstract
Abstract Described is a printing system including a first array of ink ejection elements (82) formed on a first substrate (88) surface for ejecting droplets of a first ink, a second array of ink ejection elements (82') formed on a second substrate (88') surface for ejecting droplets of a second ink, a memory element (78) associated with the first and second arrays of ink ejection elements contains parameters that relate droplet ejection characteristics of the first and second array of ink ejection elements. The droplet ejection characteristics may contain ink ejection alignment data that enables the calculation of the relative alignment between the first and second arrays of ink ejection elements such that droplets of the first ink can be effectively aligned with droplets of the second ink. Also, ink droplet volume data enables the calculation of the relative drop volume between the first and second arrays of ink ejection elements such that the printing system can provide hue control.
Inventors
- 👤 Jaren D. Marler
- 👤 Ted Lee
- 👤 Winthrop D. Childers
- 👤 Preston D. Seu
- 👤 Norman E. Pawlowski, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 14:36
CPC Classifications
B; B41; B41J; B41J2/00; B41J2/005; B41J2/01; B41J2/17; B41J2/175; B41J2/17503; B41J2/17553; B41J2/135; B41J2/14; B41J2/14016; B41J2/14024; B41J2/16; B41J2/1601; B41J2/1603; B41J2/1621; B41J2/1623; B41J2/1631; B41J2/1632; B41J2/1634; B41J2/17506; B41J2/17509; B41J2/21; B41J2/2121; B41J2/2128; B41J25/00; B41J25/22; B41J29/00; B41J29/38; B41J29/393; B41J2202/00; B41J2202/01; B41J2202/17
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
120 words
A printing system, comprising: a first array of ink ejection elements (82) formed on a first substrate (88) surface for
ejecting droplets of a first ink (21); a second array of ink ejection elements (82') formed on a second substrate surface (88')
for ejecting droplets of a second ink (23); a memory element (78) associated with said first array of ink ejection elements (82) and
said second array of ink ejection elements (82'), said memory element (78) containing
parameters that relate droplet ejection characteristics of said first array of ink ejection elements
(82) and said second array of ink ejection elements (82'); and a support structure for affixing said first and second arrays of ink ejection elements (82,
82') together.
Claim 2
Dependent Claim
24 words
The printing system of claim 1 wherein said first substrate (88) surface and said second
substrate (88) surface are formed on separate substrates (88).
Claim 3
Dependent Claim
20 words
The printing system of claim 1 wherein said first and second substrate (88) surfaces are
formed on the same substrate.
Claim 4
Dependent Claim
22 words
The printing system of claim 1 wherein said memory element (78) parameters include ink
ejection alignment data and ink droplet volume data.
Claim 5
Dependent Claim
48 words
The printing system of claim 1 wherein said memory element (78) has a plurality of
electrical contacts on said support structure that engage a plurality of system electrical contacts
on said scanning carriage (16) to allow a processor in the printing system to access said memory
elements (78).
Claim 6
Dependent Claim
123 words
An inkjet printing system, comprising: a first array of ink ejection elements (82) formed on a first substrate (88) surface for
ejecting droplets of a first ink (21); a second array of ink ejection elements (82') formed on a second substrate (88) surface
substantially coplanar with said first substrate (88) surface for ejecting droplets of a second ink
(23); a first housing (18) for separately routing the first ink (21) to said first array of ink
ejection elements (82) attached to said first housing (18); a second housing (18) for separately routing the second ink (23) to said second array of
ink ejection elements (82') attached to said second housing (18); and a support structure rigidly attaching said first and second housings (18).
Claim 7
Dependent Claim
19 words
The printing system of claims 1 or 6 further comprising a scanning carriage (16) for
holding said support structure.
Claim 8
Dependent Claim
60 words
The printing system of claim 6 further comprising a memory element (78) associated with
said first array of ink ejection elements (82) and said second array of ink ejection elements (82'),
said memory element (78) containing parameters that relate droplet ejection characteristics of
said first array of ink ejection elements (82) and said second array of ink ejection elements (82').
Claim 9
Independent Claim
83 words
A method of assembling a printing system, comprising the steps of: providing a first array of ink ejection elements (82) formed on a first substrate (88)
surface for ejecting droplets of a first ink (21); providing a second array of ink ejection elements (82') formed on a second substrate (88)
surface for ejecting droplets of a second ink (23); and forming a printhead assembly by rigidly connecting said first and second array of ink
ejection elements (82, 82') in a fixed relative alignment.
Claim 10
Dependent Claim
96 words
The method of claim 9, further comprising the steps of: testing said printhead assembly to obtain parameters that relate droplet ejection
characteristics of said first array of ink ejection elements (82) and said second array of ink
ejection elements (82'); providing a memory element (78) associated with said first array of ink ejection elements
(82) and said second array of ink ejection elements (82'); and recording on said memory element (78) said parameters that relate droplet ejection
characteristics of said first array of ink ejection elements (82) and said second array of ink
ejection elements (82').
Claim 11
Dependent Claim
73 words
The method of claim 10 wherein said parameters that relate droplet ejection
characteristics of said first array of ink ejection elements (82) and said second array of ink
ejection elements (82') enables the calculation of the relative alignment and relative drop volume
between said first and second arrays of ink ejection elements (82, 82') such that droplets of the
first ink (21) can be effectively aligned with droplets of the second ink (23).
Claim 12
Independent Claim
203 words
A method of assembling a printing system, comprising the steps of: providing a first array of ink ejection elements (82) formed on a first substrate (88)
surface for ejecting droplets of a first ink (21); providing a first housing (18) adapted to receive said first array of ink ejection elements
(82); affixing said first array of ink ejection elements (82) to said first housing (18) such that
said first housing (18) separately routes the first ink (21) to said first array of ink ejection
elements (82); providing a second array of ink ejection elements (82') formed on a second substrate (88)
surface ejecting droplets of a second ink (23); providing a second housing (18) adapted to receive said second array of ink ejection
elements (82'); affixing said second array of ink ejection elements (82') to said second housing (18) such
that said second housing (18) separately routes the second ink (23) to said second array of ink
ejection elements (82'); assembling a printhead assembly by rigidly attaching said first housing (18) to said
second housing (18) in a fixed relative alignment such that said first array of ink ejection
elements (82) and said second array of ink ejection elements (82') are substantially coplanar.
Claim 13
Dependent Claim
96 words
The method of claim 12, further comprising the steps of: testing said printhead assembly to obtain parameters that relate droplet ejection
characteristics of said first array of ink ejection elements (82) and said second array of ink
ejection elements (82'); providing a memory element (78) associated with said first array of ink ejection elements
(82) and said second array of ink ejection elements (82'); and recording on said memory element (78) said parameters that relate droplet ejection
characteristics of said first array of ink ejection elements (82) and said second array of ink
ejection elements (82').
Claim 14
Dependent Claim
73 words
The method of claim 13 wherein said parameters that relate droplet ejection
characteristics of said first array of ink ejection elements (82) and said second array of ink
ejection elements (82") enables the calculation of the relative alignment and relative drop volume
between said first and second arrays of ink ejection elements (82, 82') such that droplets of the
first ink (21) can be effectively aligned with droplets of the second ink (23).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.