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1. WO2020068088 - FLUID RECIRCULATION WITHIN PRINTING DEVICE RESERVOIR VIA PUMPS

Publication Number WO/2020/068088
Publication Date 02.04.2020
International Application No. PCT/US2018/053178
International Filing Date 27.09.2018
IPC
B41J 29/393 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
29Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
38Drives, motors, controls, or automatic cut-off devices for the entire printing mechanism
393Devices for controlling or analysing the entire machine
B41J 2/175 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
17characterised by ink handling
175Ink supply systems
B41J 2/18 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
17characterised by ink handling
18Ink recirculation systems
CPC
B41J 2/175
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
17characterised by ink handling
175Ink supply systems ; ; Circuit parts therefor
B41J 2/18
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
005characterised by bringing liquid or particles selectively into contact with a printing material
01Ink jet
17characterised by ink handling
18Ink recirculation systems
B41J 29/393
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
29Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
38Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
393Devices for controlling or analysing the entire machine ; ; Controlling or analysing mechanical parameters involving printing of test patterns
Applicants
  • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. [US]/[US]
Inventors
  • SAUER, Russell Sterling
  • WILLIAMS, Kenneth
  • SCHALK, Wesley R.
  • ARNOLD, Christopher John
Agents
  • HOOPES, Benjamin
  • DRYJA, Michael A.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FLUID RECIRCULATION WITHIN PRINTING DEVICE RESERVOIR VIA PUMPS
(FR) RECIRCULATION DE FLUIDE DANS UN RÉSERVOIR DE DISPOSITIF D'IMPRESSION PAR L'INTERMÉDIAIRE DE POMPES
Abstract
(EN)
An extraction pump of a printing device fluidically connected to a reservoir of the printing device is set to a specified rotational velocity. A pulse-width modulation (PWM) value of the extraction pump correspondingly increases until the extraction pump rotates at the specified rotational velocity. While the power of the extraction pump is monitored, a power of a supply pump of the printing device fluidically connected between the extraction pump and the reservoir is continually increased; the power of the extraction pump correspondingly decreases to maintain rotation of the extraction pump at the specified rotational velocity. Responsive to the power of the extraction pump decreasing to a characterized value for the specified rotational velocity, the power of the supply pump ceases being increased.
(FR)
L’invention concerne une pompe d'extraction d'un dispositif d'impression relié fluidiquement à un réservoir du dispositif d'impression, réglée sur une vitesse de rotation spécifiée. Une valeur de modulation d'impulsions en largeur (MIL) de la pompe d'extraction augmente de manière correspondante jusqu'à ce que la pompe d'extraction tourne à la vitesse de rotation spécifiée. Pendant la surveillance de la puissance de la pompe d'extraction, une puissance d'une pompe d'alimentation du dispositif d'impression relié fluidiquement entre la pompe d'extraction et le réservoir est augmentée en continu ; la puissance de la pompe d'extraction diminue de manière correspondante pour maintenir la rotation de la pompe d'extraction à la vitesse de rotation spécifiée. En réponse à la diminution de la puissance de la pompe d’extraction jusqu'à une valeur caractéristique pour atteindre la vitesse de rotation spécifiée, l’augmentation de la puissance de la pompe d'alimentation est interrompue.
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