Image Forming Apparatus Pre-emptive Sheet Feeder Preparation
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Solution Overview
Problem
Existing image forming apparatuses face challenges in increasing throughput due to incomplete preparation operations when receiving a preparation command, as some preparation operations are not initiated until image data is received.
Innovation Solution
An image forming apparatus with a controller, communication interface, and transmission assembly that allows for the initiation of drive force switching to a standard sheet feeder prior to receiving image data, enabling pre-emptive execution of preparation operations such as uncapping the recording head and preparing sheet feeders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the image forming apparatus waits to receive image data before starting preparation operations, then the control logic is simplified, but the throughput and image formation speed are reduced
Solution Approach 1:
The patent applies preliminary action by receiving and processing preparation commands before image data arrives. The controller stores the preparation command and executes preparation operations (such as cleaning the recording head and uncapping) in advance, while waiting for the image data to be received. This allows the apparatus to be ready for immediate image formation, improving throughput without significantly complicating the control logic.
2Speed
If preparation operations are delayed until image data receipt, then energy consumption is reduced, but the readiness and response time of the apparatus are worsened
Solution Approach 1:
The system performs preparation operations in advance by receiving preparation commands before image data. The controller stores these commands and executes the necessary preparation steps (cleaning, uncapping) while waiting for image data, ensuring the apparatus is ready for immediate operation. This preliminary action reduces response time while managing energy consumption by only performing essential preparation steps.
3Reliability
If the apparatus performs all preparation operations immediately upon receiving preparation command, then the readiness is improved, but the device complexity and operational control become more complex
Solution Approach 1:
The patent implements preliminary action by storing the preparation command received before image data and executing preparation operations at an appropriate time. The controller manages the timing and sequence of preparation operations (cleaning recording head, uncapping) based on the stored command, ensuring the apparatus is reliable and ready without overly complicating operational control.
Data Source
AI summary
An image forming apparatus includes a communication interface, an image forming unit, a plurality of sheet feeders, and a motor configured to selectively apply a drive force any of the sheet feeders. A transmission assembly switches transmission to any one of the sheet feeders. A controller receives preceding data from the communication interface, and, in response, controls the transmission assembly to initiate a switch of the transmission of the drive force to a standard sheet feeder among the plurality of the sheet feeders. In response to receipt control data received after the preceding data, the controller controls the image forming unit, motor, and transmission assembly to form an image on the sheet based on an image forming condition included in the control data.