The text discloses for use in printing valuable documents an allover pattern of warning indicia which is merged by human sensory perception with its background but is distinguished and reproduced by xerographic copying as a result of the employment of two different screen values for the indicia and the background which are respectively within and beyond the reproductive capability of the copier machine when used in the stated context. Adjunctively, document validating indicia are also printable ...

A banknote invalidating machine comprises an interchangeable plate for receiving a pile of banknotes of given format, a press which compresses the pile of notes, and a perforating tool which is moved by a sequential control to perforate the compressed pile of notes at given locations.

A printer capable of invalidating a document of value is described. The printer includes a printing mechanism, a cutter, a sensor suitable for sensing authentication characteristics of a document and outputting a sensor signal corresponding to the sensed characteristics, and a controller. The controller is operable to send authentication data representing the sensor signal to a server, cause the cutter to cut the document to invalidate the document, and send data representing completion of the i...

A data processing system comprising a cache memory, wherein a cache entry containing data is stored in the cache memory. A cache coordinator, wherein the cache coordinator invalidates one or more cache entries in response to a signal. An ID-based invalidation process, wherein a cache entry is associated with an ID that uniquely identifies the cache entry and can optionally be associated with one or more data ids that represent the underlying data contained in the cache entry, and the ID-based in...

A data processing system comprising a cache memory, wherein a cache entry containing data is stored in the cache memory. A cache coordinator, wherein the cache coordinator invalidates one or more cache entries in response to a signal. An ID-based invalidation process, wherein a cache entry is associated with an ID that uniquely identifies the cache entry and can optionally be associated with one or more data ids that represent the underlying data contained in the cache entry, and the ID-based in...

In a first aspect, a first method is provided for removing entries from an address cache. The first method includes the steps of (1) writing data to a register; and (2) removing a plurality of address cache entries from the address cache based on the data written to the register. Numerous other aspects are provided.

An endoscope system includes an operation invalidating device which invalidates the operation of a switch or key which is actuated to control the operation of a device connected to an endoscope. The operation invalidating device begins operating automatically after a lapse of a predetermined time from actuation of a power source or after a lapse of a predetermined time from operation of a switch or key.

The apparatus has as many invalidating units (E) arranged next to one another as there are longitudinal rows of security prints on the print carriers (P). Each invalidating unit (E) has a stand (1), a trough (3) vertically displaceable in the latter and intended for receiving ink (4), a centrifugal wheel (7) rotating continuously above the trough (3), and a shutter (11) which interacts with an orifice (10) of a cowl (9) covering the centrifugal wheel (7). By means of a controlled actuating membe...

Selected units of storage, such as segments of storage or regions of storage, are invalidated. The invalidation is facilitated by the setting of invalidation indicators located in data structure entries corresponding to the units of storage to be invalidated. Additionally, buffer entries associated with the invalidated units of storage or other chosen units of storage are cleared. An instruction is provided to perform the invalidation and/or clearing. Moreover, buffer entries associated with a p...

An apparatus for invalidating trading stamps of the type that are placed in disposable paper books for redemption, and the stamps prior to distribution to customers having an insignia defined on the printed surface thereof by a temperature sensitive ink. The apparatus is equally adapted for use in invalidating certificates having redemption value, when the certificates have insignias defined thereon in temperature sensitive ink. The books of stamps or certificates of the above description are re...