The following operators can be used to better focus your queries.
( ) , AND, OR, NOT, W/#
? single char wildcard, not at start
* multi char wildcard, not at start
(Cat? OR feline) AND NOT dog?
Cat? W/5 behavior
(Cat? OR feline) AND traits
Cat AND charact*
This guide provides a more detailed description of the syntax that is supported along with examples.
This search box also supports the look-up of an IP.com Digital Signature (also referred to as Fingerprint); enter the 72-, 48-, or 32-character code to retrieve details of the associated file or submission.
Concept Search - What can I type?
For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
Concept search eliminates the need for complex Boolean syntax to inform retrieval. Our Semantic Gist engine uses advanced cognitive semantic analysis to extract the meaning of data. This reduces the chances of missing valuable information, that may result from traditional keyword searching.
In conventional belt-type copiers, the machine must be stopped and the entire belt must be replaced when any part of the belt becomes damaged or degraded.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
90% of the total text.
Page 1 of 1
Photoconductor Panel Demark
In conventional belt-type copiers, the machine must be stopped and the
entire belt must be replaced when any part of the belt becomes damaged or
This article discloses a method and apparatus wherein the machine can run
although at a reduced rate. This allows for a "soft" failure. The customer can
continue to run the machine until the damaged belt is changed.
The method requires that each image area or panel on the photoconductor
belt be marked with a unique code, for example, a three-bit hole pattern or
When the customer discovers that some copies have an
imperfection, a diagnostic mode is activated. The diagnostic mode
can be activated via a diagnostic switch positioned on the front
panel or display panel of the copier system. The diagnostic switch
is connected to a microprocessor which stores the diagnostic program.
By way of example, if the photoconductor belt has seven panels, the
machine makes seven copies for the customer. If one or two of the
copies are defective, the customer indicates which panel should be
demarked or not used. From then on, these panels are skipped and not
used until the belt can be changed.
The machine produces copies at a slower rate depending on the number of
panels demarked. This example envisions a copier capable of producing 70
copies per minute at normal speed. Thus, with seven panels, two demarked, for
example. the true rate would be 70 by 5/7 = 50 copies per minute.