Measurement system to monitor printing contact pressure
AssigneeIntelligent Sensing, Inc.
InventorsRonald D. Gilliam, Paul C. Skala
Life of this patent
Estimating the term…
Abstract
A measurement system is disclosed enabling the operator of a rotary printing press to continuously discern the contact pressure being exerted during the printing of a visual image. The measurement system requires the pressure sensing components being employed to cooperate with further sensing components detecting angular position of the printing plates when the pressure measurements are being carried out to produce a continuous visual display for the press operator.
Claims23
A method to monitor contact pressure between pairs of rotating printing plates disposed on the outer surface of rotating plate and blanket rollers in an offset type rotary printing press further including a pair of rotating upper and lower form rollers which transfer printing ink to said plate roller which comprises:
- (a) continuously sensing during press operation with said upper and lower form rollers when a first printing plate disposed on the outer surface of said rotating plate roller in said printing press comes into registration with a second printing plate disposed on the outer surface of said rotating blanket roller in said printing press,
- (b) concurrently and continuously measuring the contact pressure being exerted between said pair of rotating form rollers physically abutting the rotating plate roller during the time period when the printing plates on the plate roller and the blanket roller remain in registration, said contact pressure being measured with mechanical pressure sensing devices which are disposed adjacent opposite ends of both upper and lower form rollers,
- (c) further sensing the angular position of said rotating form rollers during the time period when said printing plates on the plate and blanket rollers remain in registration, and
- (d) continuously displaying a graphical visual image of the variation in contact pressure with respect to the angular position of said rotating form rollers during said time period, and said graphical visual image being displayed is a conventional binary graph.
A method to monitor contact pressure between pairs of rotating printing plate members disposed on the outer surface of rotating plate and blanket rollers in an offset type rotary printing press employing multiple printing heads each applying a single color forming part of a printed image to a first printing plate disposed on the outer surface of said rotating plate roller and further including a pair of rotating upper and lower form rollers which transfer printing ink to said plate roller which comprises:
- (a) continuously sensing during press operation with said upper and lower form rollers when a first printing plate disposed on the outer surface of said rotating plate member in said printing press comes into registration with a second printing plate disposed on the outer surface of said rotating blanket roller in said printing press,
- (b) concurrently and continuously measuring the contact pressure being exerted between said pair of rotating form rollers physically abutting the rotating plate roller during the time period when the printing plates on the plate roller and the blanket roller remain in registration, said contact pressure being measured with mechanical pressure sensing devices which are disposed adjacent opposite ends of both upper and lower form rollers,
- (c) further sensing the angular position of said rotating form rollers during the time period when said printing plates on the plate and blanket rollers remain in registration, and
- (d) continuously displaying the variation in contact pressure as a graphical image with respect to angular position of said rotating form rollers during said time period, and said graphical visual image being displayed as a conventional binary graph.
A measurement system to monitor during press operation the contact pressure between pairs of rotating printing plate members disposed on the outer surface of rotating plate and blanket rollers in an offset type rotary printing press further including a pair of rotating upper and lower form rollers which transfer printing ink to said plate roller which comprises:
- (a) position sensing means to continuously detect during press operation when a first printing plate disposed on the outer surface of said rotating plate roller in said printing press comes into registration with a second printing plate disposed on the outer surface of said rotating blanket roller in said printing press,
- (b) mechanical pressure sensing devices which are disposed at opposite ends of both upper and lower form rollers to measure the contact pressure being exerted by said pair of form rollers physically abutting the rotating plate roller,
- (c) rotational feedback means determining the angular position of said rotating form rollers during the time period when the printing plates on said plate and blanket rollers remain in registration, and
- (d) visual display means depicting the variation in contact pressure as a graphical visual image with respect to angular position of said rotating form rollers while said printing plates on the plate and blanket rollers remain in registration, and said graphical visual image being displayed as a conventional binary graph.
An offset type rotary printing press having a measurement system to continuously monitor the contact pressure employed in forming a printed image during press operation, the printing press including pairs of rotating printing plate members disposed on the outer surface of rotating plate and blanket rollers together with a pair of rotating upper and lower form rollers which transfer printing ink to said plate roller, said measurement system comprising:
- (a) position sensing means to continuously detect during press operation when a first printing plate disposed on the outer surface of said rotating plate roller in said printing press comes into registration with a second printing plate disposed on the outer surface of said rotating blanket roller in said printing press,
- (b) mechanical pressure sensing devices which are disposed at opposite ends of both upper and lower form rollers to measure the contact pressure being exerted by said pair of form rollers physically abutting the rotating plate roller,
- (c) rotational feedback means determining the angular position of said rotating form rollers during the time period when the printing plates on said plate and blanket rollers remain in registration, and
- (d) visual display means depicting the variation in contact pressure as a graphical visual image with respect to angular position of said rotating from rollers while said printing plates on the plate and blanket rollers remain in registration, and said graphical visual image being displayed as a conventional binary graph.
Dependencies are inferred from the claim text.