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US 11,269,284 B2Granted
Pattern discharge to photoconductor
AssigneeHewlett-Packard Development Company, L.P.
InventorPaul Jeran
Life of this patent
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Abstract
Examples disclosed herein relate to an imaging device. The imaging device to include a discharge member to discharge a first pattern on a photoconductor; and a writing engine to control the discharge member to discharge a second pattern to the photoconductor to obscure any latent pattern formed from the first pattern remaining on the photoconductor.
Claims20
An imaging device, comprising:
- a discharge member to discharge a first pattern on a photoconductor, the first pattern corresponding to a job that is processed by the imaging device to produce a physical object based on the first pattern;
- and
- a writing engine to control the discharge member to discharge a second pattern to the photoconductor to obscure a latent pattern formed from the first pattern remaining on the photoconductor, the second pattern corresponding to a security operation of the imaging device to obscure the latent pattern on the photoconductor, and wherein the write engine is to determine to perform the security operation including the discharge of the second pattern in response to the print job being a secure job.
A method to obscure an imaging pattern on a drum, comprising:
- determining if the imaging pattern has been written on the drum, the imaging pattern corresponding to a job that is processed by an imaging device to produce a physical object based on the imaging pattern;
- determining the imaging pattern is part of the job that is a secure job;
- in response to the print job being the secure job, determining to perform a security operation in response to determining the imaging pattern has been written on the drum;
- acquiring a latent image reduction parameter when the security operation is to be performed;
- and
- writing a pattern to the drum according to the latent image reduction parameter, the pattern corresponding to the security operation of the imaging device and to obscure a latent pattern remaining from the imaging pattern and the processed job.
3 more elements
An imaging device, comprising:
- a drum to receive a discharge pattern and a charged particle to be attracted to the discharge pattern, the discharge pattern corresponding to a job that is processed by the imaging device to produce a physical object based on the discharge pattern;
- a discharge member to apply the discharge pattern to the drum;
- a security parameter engine to store latent image reduction parameters;
- and
- a writing engine to control the discharge member to:
- determine to perform a security operation in response to the print job being a secure print job;
- in response to the print job being the secure print job, apply a pattern to the drum to obscure a latent pattern formed from the discharge pattern remaining on the drum after the job is processed and according to the latent image reduction parameter, wherein the pattern corresponds to the security operation of the imaging device to obscure the latent pattern on the drum.
4 more elements
Dependencies are inferred from the claim text.